Side by side

BNC versus Mini-BNC versus HD-BNC

Which bayonet/coaxial interface family is actually documented for the equipment?

Computer-generated illustration, not a photograph. — P027 · ConnectorBNC connector

How they differ

BNC connector Look for the bayonet coupling rather than a threaded connector. Verify the actual part number when impedance matters.
Mini-BNC coaxial connector Compare coupling geometry and overall size against known BNC and HD-BNC forms before mating.
HD-BNC coaxial connector Identify the exact HD-BNC product/impedance and the equipment signal specification before selecting a cable assembly.

Then askWhich bayonet/coaxial interface family is actually documented for the equipment?

At a glance

Source-scoped form facts; counts, variants and unknowns are distinct
Field	BNC connector	Mini-BNC coaxial connector	HD-BNC coaxial connector
Type	Connector	Connector	Connector
Family	Coax	Coax	Coax
Shape	round	round	bayonet
Nominal contacts	Not recordedNot recorded in a normalized source-scoped field. Consult the exact part/revision; no value inferred from illustrations.	Not recordedNot recorded in a normalized source-scoped field. Consult the exact part/revision; no value inferred from illustrations.	Not recordedNot recorded in a normalized source-scoped field. Consult the exact part/revision; no value inferred from illustrations.
Positions / cavity span	Not recordedNot recorded in a normalized source-scoped field. Consult the exact part/revision; no value inferred from illustrations.	Not recordedNot recorded in a normalized source-scoped field. Consult the exact part/revision; no value inferred from illustrations.	Not recordedNot recorded in a normalized source-scoped field. Consult the exact part/revision; no value inferred from illustrations.
Contact rows	Not recordedNot recorded in a normalized source-scoped field. Consult the exact part/revision; no value inferred from illustrations.	Not recordedNot recorded in a normalized source-scoped field. Consult the exact part/revision; no value inferred from illustrations.	Not recordedNot recorded in a normalized source-scoped field. Consult the exact part/revision; no value inferred from illustrations.
Connector role	plug; socketS029 · S371Recorded source-scoped values; named examples do not describe every family variant or establish compatibility. coaxial plug and jack interface	Not recordedNot recorded in a normalized source-scoped field. Consult the exact part/revision; no value inferred from illustrations.	Not recordedNot recorded in a normalized source-scoped field. Consult the exact part/revision; no value inferred from illustrations.
Key distinction	A locking fit is not an impedance match.	Mini-BNC, BNC and HD-BNC are separate interfaces despite related broadcast use and naming.	A miniature bayonet coax outline does not establish 50-ohm versus 75-ohm system compatibility or signal format.

Full evidence ledger and sources ↓

Illustrations are computer-generated with prior AI visual review; independent technical and rights review pending. A comparison is not a compatibility verdict.

This comparison stays within one evidence layer.

All selected records are Connector records. Similar layer does not mean compatible, interchangeable or safe to mate.

Families represented: Coax

Look here first

Spot the difference.

Read the views →

Not a size comparison. Illustrations fit the same display boxes; their physical dimensions are not shown to a common scale. No mating or compatibility verdict follows.

P027 / Front-oriented symbol

BNC connector

Role not specified

Visible clue: Bayonet coupling is the family clue

Still check: The exact part number is needed for impedance; trial fitting is not a test.

P231 / Front-oriented symbol

Mini-BNC coaxial connector

Role not specified

Visible clue: Mini-BNC is a distinct documented family

Still check: Check exact coupling and part documentation; screen size is not a scale comparison.

P205 / Exterior side view

HD-BNC coaxial connector

Plug-style exterior

Visible clue: HD-BNC exterior with a simplified coupling body

Still check: Use the exact part designation; impedance and 12G scope cannot be read from the sketch.

The reference ledger

Read the same question across.

3 selected records · 18 fields
No score. No compatibility verdict.

On a narrow screen, scroll the table sideways or open the field-by-field reading view below. Illustrations are not a size comparison.

Comparison of selected field notes; source links accompany each documented specification
What you are comparing	P027 / ConnectorBNC connector Identification schematic · not to scale · drawing review pending	P231 / ConnectorMini-BNC coaxial connector Identification schematic · not to scale · drawing review pending	P205 / ConnectorHD-BNC coaxial connector Identification schematic · not to scale · drawing review pending
Layer	Connector	Connector	Connector
Key distinction	A locking fit is not an impedance match.	Mini-BNC, BNC and HD-BNC are separate interfaces despite related broadcast use and naming.	A miniature bayonet coax outline does not establish 50-ohm versus 75-ohm system compatibility or signal format.
Nominal contacts	Not recordedNot recorded in a normalized source-scoped field. Consult the exact part/revision; no value inferred from illustrations.	Not recordedNot recorded in a normalized source-scoped field. Consult the exact part/revision; no value inferred from illustrations.	Not recordedNot recorded in a normalized source-scoped field. Consult the exact part/revision; no value inferred from illustrations.
Positions / cavity span	Not recordedNot recorded in a normalized source-scoped field. Consult the exact part/revision; no value inferred from illustrations.	Not recordedNot recorded in a normalized source-scoped field. Consult the exact part/revision; no value inferred from illustrations.	Not recordedNot recorded in a normalized source-scoped field. Consult the exact part/revision; no value inferred from illustrations.
Populated contacts	Not recordedNot recorded in a normalized source-scoped field. Consult the exact part/revision; no value inferred from illustrations.	Not recordedNot recorded in a normalized source-scoped field. Consult the exact part/revision; no value inferred from illustrations.	Not recordedNot recorded in a normalized source-scoped field. Consult the exact part/revision; no value inferred from illustrations.
Contact rows	Not recordedNot recorded in a normalized source-scoped field. Consult the exact part/revision; no value inferred from illustrations.	Not recordedNot recorded in a normalized source-scoped field. Consult the exact part/revision; no value inferred from illustrations.	Not recordedNot recorded in a normalized source-scoped field. Consult the exact part/revision; no value inferred from illustrations.
Contact pitch	Not recordedNot recorded in a normalized source-scoped field. Consult the exact part/revision; no value inferred from illustrations.	Not recordedNo qualified value remains for this contact/body field. Source context is retained in variant_notes; no value inferred from artwork or names.	Not recordedNot recorded in a normalized source-scoped field. Consult the exact part/revision; no value inferred from illustrations.
Dimensions / axis	Not recordedNot recorded in a normalized source-scoped field. Consult the exact part/revision; no value inferred from illustrations.	Not recordedNot recorded in a normalized source-scoped field. Consult the exact part/revision; no value inferred from illustrations.	Not recordedNot recorded in a normalized source-scoped field. Consult the exact part/revision; no value inferred from illustrations.
Connector role	plug; socketS029 · S371Recorded source-scoped values; named examples do not describe every family variant or establish compatibility. coaxial plug and jack interface	Not recordedNot recorded in a normalized source-scoped field. Consult the exact part/revision; no value inferred from illustrations.	Not recordedNot recorded in a normalized source-scoped field. Consult the exact part/revision; no value inferred from illustrations.
Coupling / latch	bayonet (Claim C027A); bayonet (Claim C027C); BayonetS029 · S371 · S029Named source examples retain separate role, part, view and axis limits; values are not a universal family specification. Consumer identification / documented standard or product class only BNC coupling, impedance-family and interface-standard context only; no universal frequency or cable-performance claim. Named series only, not every family part: Amphenol RF BNC product family. Family coupling is useful identification context but is not automatically counted as a polarization/keying fact.; No part suffix, row/contact pitch, dimensional axis, physical marking or universal performance limit inferred.	bayonet (Claim C231D); Quarter-turn bayonetS542 · S235Named source examples retain separate role, part, view and axis limits; values are not a universal family specification. Exact 031-70250 only. Named series only, not every family part: Amphenol RF Mini-BNC product family. Family coupling is useful identification context but is not automatically counted as a polarization/keying fact.; No part suffix, row/contact pitch, dimensional axis, physical marking or universal performance limit inferred.	Quarter-turn bayonetS208Named source examples retain separate role, part, view and axis limits; values are not a universal family specification. Named series only, not every family part: Amphenol RF HD-BNC product family. Family coupling is useful identification context but is not automatically counted as a polarization/keying fact.; No part suffix, row/contact pitch, dimensional axis, physical marking or universal performance limit inferred.
Keying / polarization	Not recordedNot recorded in a normalized source-scoped field. Consult the exact part/revision; no value inferred from illustrations.	Not recordedNot recorded in a normalized source-scoped field. Consult the exact part/revision; no value inferred from illustrations.	Not recordedNot recorded in a normalized source-scoped field. Consult the exact part/revision; no value inferred from illustrations.
Coupling	BayonetC027A · C027B	Not an equivalent field	Not an equivalent field
Impedance	Variant-specific; 50 Ω and 75 Ω familiesC027A · C027B	Not an equivalent field	Not an equivalent field
Impedance matching boundary	Amphenol warns that physical mating, where possible, does not remove a 50/75-ohm impedance mismatch; reflections and signal degradation remain concerns.C027D	Not an equivalent field	Not an equivalent field
Documented identification	Not an equivalent field	Compact Mini-BNC bayonet-style coaxial connector family.C231A	Compact HD-BNC coaxial connector family; impedance varies by product.C205A
Mini-BNC source context	Not an equivalent field	Amphenol’s broadcast brief lists Mini-BNC in a distinct 75-ohm column, separate from its BNC and HD-BNC columns.C231B	Not an equivalent field
HD-BNC variant evidence	Not an equivalent field	Not an equivalent field	Amphenol’s HD-BNC guide describes a bayonet interface with separate 50-ohm and 75-ohm offerings.C205B
Evidence	C027A,C027B,C027D → Independent review pending	C231A,C231B,C231C,C231D,C231E,C231F → Independent review pending	C205A,C205B,C205C,C205D,C205E,C205F,C205G → Independent review pending

Read field by field — no sideways scrolling

The same selected records, fields, values and source links as the table. Missing fields remain non-equivalent; no values are merged.

Layer

BNC connectorP027 / Connector: Connector
Mini-BNC coaxial connectorP231 / Connector: Connector
HD-BNC coaxial connectorP205 / Connector: Connector

Key distinction

BNC connectorP027 / Connector: A locking fit is not an impedance match.
Mini-BNC coaxial connectorP231 / Connector: Mini-BNC, BNC and HD-BNC are separate interfaces despite related broadcast use and naming.
HD-BNC coaxial connectorP205 / Connector: A miniature bayonet coax outline does not establish 50-ohm versus 75-ohm system compatibility or signal format.

Nominal contacts

BNC connectorP027 / Connector: Not recordedNot recorded in a normalized source-scoped field. Consult the exact part/revision; no value inferred from illustrations.
Mini-BNC coaxial connectorP231 / Connector: Not recordedNot recorded in a normalized source-scoped field. Consult the exact part/revision; no value inferred from illustrations.
HD-BNC coaxial connectorP205 / Connector: Not recordedNot recorded in a normalized source-scoped field. Consult the exact part/revision; no value inferred from illustrations.

Positions / cavity span

BNC connectorP027 / Connector: Not recordedNot recorded in a normalized source-scoped field. Consult the exact part/revision; no value inferred from illustrations.
Mini-BNC coaxial connectorP231 / Connector: Not recordedNot recorded in a normalized source-scoped field. Consult the exact part/revision; no value inferred from illustrations.
HD-BNC coaxial connectorP205 / Connector: Not recordedNot recorded in a normalized source-scoped field. Consult the exact part/revision; no value inferred from illustrations.

Populated contacts

BNC connectorP027 / Connector: Not recordedNot recorded in a normalized source-scoped field. Consult the exact part/revision; no value inferred from illustrations.
Mini-BNC coaxial connectorP231 / Connector: Not recordedNot recorded in a normalized source-scoped field. Consult the exact part/revision; no value inferred from illustrations.
HD-BNC coaxial connectorP205 / Connector: Not recordedNot recorded in a normalized source-scoped field. Consult the exact part/revision; no value inferred from illustrations.

Contact rows

BNC connectorP027 / Connector: Not recordedNot recorded in a normalized source-scoped field. Consult the exact part/revision; no value inferred from illustrations.
Mini-BNC coaxial connectorP231 / Connector: Not recordedNot recorded in a normalized source-scoped field. Consult the exact part/revision; no value inferred from illustrations.
HD-BNC coaxial connectorP205 / Connector: Not recordedNot recorded in a normalized source-scoped field. Consult the exact part/revision; no value inferred from illustrations.

Contact pitch

BNC connectorP027 / Connector: Not recordedNot recorded in a normalized source-scoped field. Consult the exact part/revision; no value inferred from illustrations.
Mini-BNC coaxial connectorP231 / Connector: Not recordedNo qualified value remains for this contact/body field. Source context is retained in variant_notes; no value inferred from artwork or names.
HD-BNC coaxial connectorP205 / Connector: Not recordedNot recorded in a normalized source-scoped field. Consult the exact part/revision; no value inferred from illustrations.

Dimensions / axis

BNC connectorP027 / Connector: Not recordedNot recorded in a normalized source-scoped field. Consult the exact part/revision; no value inferred from illustrations.
Mini-BNC coaxial connectorP231 / Connector: Not recordedNot recorded in a normalized source-scoped field. Consult the exact part/revision; no value inferred from illustrations.
HD-BNC coaxial connectorP205 / Connector: Not recordedNot recorded in a normalized source-scoped field. Consult the exact part/revision; no value inferred from illustrations.

Connector role

BNC connectorP027 / Connector: plug; socketS029 · S371Recorded source-scoped values; named examples do not describe every family variant or establish compatibility. coaxial plug and jack interface
Mini-BNC coaxial connectorP231 / Connector: Not recordedNot recorded in a normalized source-scoped field. Consult the exact part/revision; no value inferred from illustrations.
HD-BNC coaxial connectorP205 / Connector: Not recordedNot recorded in a normalized source-scoped field. Consult the exact part/revision; no value inferred from illustrations.

Coupling / latch

BNC connectorP027 / Connector: bayonet (Claim C027A); bayonet (Claim C027C); BayonetS029 · S371 · S029Named source examples retain separate role, part, view and axis limits; values are not a universal family specification. Consumer identification / documented standard or product class only BNC coupling, impedance-family and interface-standard context only; no universal frequency or cable-performance claim. Named series only, not every family part: Amphenol RF BNC product family. Family coupling is useful identification context but is not automatically counted as a polarization/keying fact.; No part suffix, row/contact pitch, dimensional axis, physical marking or universal performance limit inferred.
Mini-BNC coaxial connectorP231 / Connector: bayonet (Claim C231D); Quarter-turn bayonetS542 · S235Named source examples retain separate role, part, view and axis limits; values are not a universal family specification. Exact 031-70250 only. Named series only, not every family part: Amphenol RF Mini-BNC product family. Family coupling is useful identification context but is not automatically counted as a polarization/keying fact.; No part suffix, row/contact pitch, dimensional axis, physical marking or universal performance limit inferred.
HD-BNC coaxial connectorP205 / Connector: Quarter-turn bayonetS208Named source examples retain separate role, part, view and axis limits; values are not a universal family specification. Named series only, not every family part: Amphenol RF HD-BNC product family. Family coupling is useful identification context but is not automatically counted as a polarization/keying fact.; No part suffix, row/contact pitch, dimensional axis, physical marking or universal performance limit inferred.

Keying / polarization

BNC connectorP027 / Connector: Not recordedNot recorded in a normalized source-scoped field. Consult the exact part/revision; no value inferred from illustrations.
Mini-BNC coaxial connectorP231 / Connector: Not recordedNot recorded in a normalized source-scoped field. Consult the exact part/revision; no value inferred from illustrations.
HD-BNC coaxial connectorP205 / Connector: Not recordedNot recorded in a normalized source-scoped field. Consult the exact part/revision; no value inferred from illustrations.

Coupling

BNC connectorP027 / Connector: BayonetC027A · C027B
Mini-BNC coaxial connectorP231 / Connector: Not an equivalent field
HD-BNC coaxial connectorP205 / Connector: Not an equivalent field

Impedance

BNC connectorP027 / Connector: Variant-specific; 50 Ω and 75 Ω familiesC027A · C027B
Mini-BNC coaxial connectorP231 / Connector: Not an equivalent field
HD-BNC coaxial connectorP205 / Connector: Not an equivalent field

Impedance matching boundary

BNC connectorP027 / Connector: Amphenol warns that physical mating, where possible, does not remove a 50/75-ohm impedance mismatch; reflections and signal degradation remain concerns.C027D
Mini-BNC coaxial connectorP231 / Connector: Not an equivalent field
HD-BNC coaxial connectorP205 / Connector: Not an equivalent field

Documented identification

BNC connectorP027 / Connector: Not an equivalent field
Mini-BNC coaxial connectorP231 / Connector: Compact Mini-BNC bayonet-style coaxial connector family.C231A
HD-BNC coaxial connectorP205 / Connector: Compact HD-BNC coaxial connector family; impedance varies by product.C205A

Mini-BNC source context

BNC connectorP027 / Connector: Not an equivalent field
Mini-BNC coaxial connectorP231 / Connector: Amphenol’s broadcast brief lists Mini-BNC in a distinct 75-ohm column, separate from its BNC and HD-BNC columns.C231B
HD-BNC coaxial connectorP205 / Connector: Not an equivalent field

HD-BNC variant evidence

BNC connectorP027 / Connector: Not an equivalent field
Mini-BNC coaxial connectorP231 / Connector: Not an equivalent field
HD-BNC coaxial connectorP205 / Connector: Amphenol’s HD-BNC guide describes a bayonet interface with separate 50-ohm and 75-ohm offerings.C205B

Evidence

BNC connectorP027 / Connector: C027A,C027B,C027D →
Independent review pending
Mini-BNC coaxial connectorP231 / Connector: C231A,C231B,C231C,C231D,C231E,C231F →
Independent review pending
HD-BNC coaxial connectorP205 / Connector: C205A,C205B,C205C,C205D,C205E,C205F,C205G →
Independent review pending

Your next step

Use the distinction in context.

Open the field notes Read source-linked facts and limitations.Compare another pair Start from a common confusion.Check a connection A comparison is not a compatibility verdict.

Continue the distinction

Compare next

Browse every comparison →

BNC vs TNC coaxial connectorsBNC uses bayonet coupling while TNC uses threaded coupling. Connector family, impedance and application still need to be verified independently.LEMO broadcast 75-ohm versus 00 NIM-CAMAC 50-ohm triaxIs the documented interface a 75-ohm broadcast triax form or the 50-ohm LEMO 00 NIM-CAMAC form? Impedance and series identity are not interchangeable.MCX versus MMCXWhich miniature snap-on coaxial family matches the documented component? Connector-family identity is only the first layer; implementation-specific electrical and protocol requirements still need exact documentation.N-Type versus RP-N-TypeIs the center-contact convention standard N-Type or reverse-polarity N-Type? Connector-family identity is only the first layer; implementation-specific electrical and protocol requirements still need exact documentation.SMA versus RP-SMAThe center contact matters as well as the threaded outer shell.TNC versus RP-TNCIs the threaded TNC interface standard or reverse polarity? Connector-family identity is only the first layer; implementation-specific electrical and protocol requirements still need exact documentation.

Adjust this comparison

Add a field note

Evidence behind this page

Scope first. Source second. Approval separate.

10 linked sources · 16 scoped claims · 0 sources with inspection/access flags.

Page scope: Evidence behind the compared records; the editorial comparison still needs separate review.

Assessment 2026-10-22 · earliest scheduled source review 2026-12-30. This is a recorded-date assessment, not a live source check. Page-level independent review is not established by this panel.

Inspect 10 source scopes, access limits and dates

S029 · BNC connectors

Amphenol RF · Manufacturer / product-owner domain · inspected 2026-10-01 · due 2026-12-30

Within inspection window

Scoped support: Bayonet coupling; 50-ohm and 75-ohm variants.

Not established / limitations:

Locator: BNC product family

S030 · Can I use 50-ohm connectors in a 75-ohm system?

Amphenol RF · Manufacturer / product-owner domain · inspected 2026-10-01 · due 2026-12-30

Within inspection window

Scoped support: Mechanical fit does not establish RF impedance compatibility.

Not established / limitations:

Locator: Impedance mismatch explanation

S208 · HD-BNC connectors

Amphenol RF · Manufacturer / product-owner domain · inspected 2026-10-05 · due 2027-01-03

Within inspection window

Scoped support: Identifies HD-BNC as a compact bayonet-style coaxial connector family with 50-ohm and 75-ohm product variants.

Not established / limitations: Identification/reference scope only. V36 does not convert this source into a universal pinout, fabrication drawing, electrical approval or end-to-end compatibility verdict.

Locator: HD-BNC product-family overview

S235 · Mini-BNC connectors

Amphenol RF · Manufacturer / product-owner domain · inspected 2026-10-05 · due 2027-01-03

Within inspection window

Scoped support: Identifies Mini-BNC as a compact bayonet-style coaxial connector family distinct from standard BNC.

Not established / limitations: Identification/reference scope only. V39 does not convert this source into a universal pinout, fabrication drawing, electrical approval, protocol guarantee or end-to-end compatibility verdict.

Locator: Mini-BNC overview

S423 · Amphenol RF HD-BNC Product Series Solutions Guide

Amphenol RF · Manufacturer / product-owner domain · inspected 2026-10-07 · due 2027-01-05

Within inspection window

Scoped support: Manufacturer HD-BNC family and explicitly named adapter/12G examples.

Not established / limitations: No explicit revision date was observed. Full IEC 61169-70 was not inspected; its mention is a locator, not a reproduced standard. No family-wide maximum, interface dimensions or fabrication tolerances are adopted.

Locator: Printed pages 3–4, 9 and 11: bayonet and impedance options, interface drawings, between-series adapters and named 12G subset.

S424 · Amphenol RF High-Density Broadcast Solutions — one-page brief

Amphenol RF · Manufacturer / product-owner domain · inspected 2026-10-07 · due 2027-01-05

Within inspection window

Scoped support: Named broadcast connector families as presented in this undated manufacturer brief.

Not established / limitations: The 15.5, 13.1 and 8 mm figures are example panel pitches, not mating diameters, contact pitch or installation clearances. Frequency statements remain specific to this brief; no universal or current maximum is inferred.

Locator: Page 1: interface-density illustration and BNC/Mini-BNC/HD-BNC electrical specification columns.

S425 · Amphenol RF — 50-ohm connectors in a 75-ohm system

Amphenol RF · Manufacturer / product-owner domain · inspected 2026-10-07 · due 2027-01-05

Within inspection window

Scoped support: Manufacturer warning about an impedance mismatch even where unlike-impedance connectors can mate.

Not established / limitations: Does not assert that every 50/75-ohm connector pair physically mates, quantify a universal loss, or establish the rating of an unidentified connector.

Locator: Full FAQ answer: physical mating is distinct from impedance matching and signal reflections.

S540 · Amphenol RF HD-BNC guide — three named PCB jack rows

Amphenol RF · Manufacturer / product-owner domain · inspected 2026-10-12 · due 2027-01-10

Within inspection window

Scoped support: Only these three named rows and their section headings. The 034-1021 Features cell is blank: it does not establish an explicit absence of mounting features.

Not established / limitations: This URL is already present as S423. S540 is a new dated, narrower observation, not a newly discovered URL. Small row image is qualitative; no exact interface geometry, dimensions or SDI performance imported.

Locator: Printed p.4 (PDF p.4): PCB Jacks (50 Ohm), row 034-5013. Printed p.5 (PDF p.5): PCB Jacks (75 Ohm), rows 034-1018 and 034-1021; row 034-1018 photo inspected.

S542 · Amphenol RF 031-70250 — Mini-BNC board jack

Amphenol RF · Manufacturer / product-owner domain · inspected 2026-10-12 · due 2027-01-10

Within inspection window

Scoped support: Exact 031-70250 component. Through-hole board termination is not a panel-mount approval.

Not established / limitations: Drawing side exterior inspected. Dimensions, PCB drilling pattern and contact interiors are not transferred.

Locator: Heading; Gender, Impedance, Coupling Mechanism, Contact Termination, Panel Mounting Feature and Termination Style. Linked drawing 31-70250 revision A inspected separately.

S543 · Amphenol RF Mini-BNC family — conflicting scope descriptions

Amphenol RF · Manufacturer / product-owner domain · inspected 2026-10-12 · due 2027-01-10

Within inspection window

Scoped support: Documented disagreement between narrative and table scope; no unqualified family-wide rating chosen.

Not established / limitations: Narrative and table differ on impedance, frequency and temperature scope. Exact application rating remains unresolved.

Locator: Overview and Key Technical Details compared with Electrical and Environmental specification tables.

Trace 16 claims to their source records

C027A · P027

BNC uses a bayonet coupling; both 50-ohm and 75-ohm variants exist.

Claim scope: Consumer identification / documented standard or product class only

Source links: S029 · Evidence trail → (private workspace)

C027B · P027

Mechanically mating RF components can still create an impedance mismatch.

Claim scope: Narrowly stated supporting distinction; not an end-to-end device guarantee

Source links: S030 · Evidence trail → (private workspace)

C027D · P027

Amphenol warns that physical mating, where possible, does not remove a 50/75-ohm impedance mismatch; reflections and signal degradation remain concerns.

Claim scope: Full manufacturer FAQ answer; not a claim that every unlike-impedance pair mechanically fits or a numeric loss forecast.

Source links: S425 · Evidence trail → (private workspace)

C205A · P205

Amphenol RF identifies HD-BNC as a compact bayonet-style coaxial connector family offered in 50-ohm and 75-ohm variants.

Claim scope: V36 catalogue-expansion identification fact only; not independent technical approval, fabrication data, wiring instruction or end-to-end compatibility proof.

Source links: S208 · Evidence trail → (private workspace)

C205B · P205

Amphenol’s HD-BNC guide describes a bayonet interface with separate 50-ohm and 75-ohm offerings.

Claim scope: Printed pages 3–4; no full standard review, interface dimensions or universal operating-frequency maximum.

Source links: S423 · Evidence trail → (private workspace)

C205C · P205

The guide lists APH-BNCJ-HDBNCJ as a straight 75-ohm between-series adapter with an HD-BNC jack on one side and a BNC jack on the other.

Claim scope: Printed page 9 ordering row only; existence of an adapter does not make the bare interfaces the same.

Source links: S423 · Evidence trail → (private workspace)

C205D · P205

Amphenol identifies a 12G HD-BNC product line for 12G-SDI use and lists named 12G parts; its performance discussion refers to a mated pair from that line.

Claim scope: Printed page 11; no transfer of the named subset’s statement to every HD-BNC product or to a complete cable path.

Source links: S423 · Evidence trail → (private workspace)

C205E · P205

The HD-BNC guide places 034-1018 among its 75-ohm PCB jacks and describes a straight end-launch, rear-bulkhead-mount configuration.

Claim scope: Printed p.5, exact 034-1018 row. No dimensions or common footprint are inferred.

Source links: S540 · Evidence trail → (private workspace)

C205F · P205

The HD-BNC guide places 034-5013 among its 50-ohm PCB jacks and describes a straight end-launch, rear-bulkhead-mount configuration.

Claim scope: Printed p.4, exact 034-5013 row. Similar role words do not establish interchangeability with the 75-ohm example.

Source links: S540 · Evidence trail → (private workspace)

C205G · P205

The guide places HD-BNC 034-1021 among 75-ohm PCB jacks with straight, through-hole termination; the row has no text in its Features cell.

Claim scope: Printed p.5, exact row. A blank cell is unknown information, not an explicit no-mount statement.

Source links: S540 · Evidence trail → (private workspace)

C231A · P231

Amphenol RF identifies Mini-BNC as a compact bayonet-style coaxial connector family.

Claim scope: V39 catalogue-expansion identification fact only; not independent technical approval, fabrication data, wiring instruction, protocol guarantee or end-to-end compatibility proof.

Source links: S235 · Evidence trail → (private workspace)

C231B · P231

Amphenol’s broadcast brief lists Mini-BNC in a distinct 75-ohm column, separate from its BNC and HD-BNC columns.

Claim scope: Page 1 of an undated brief; not a universal Mini-BNC family specification or a substitute for an exact product drawing.

Source links: S424 · Evidence trail → (private workspace)

C231C · P231

The brief illustrates panel layouts at 15.5 mm pitch for BNC, 13.1 mm for Mini-BNC and 8 mm for HD-BNC.

Claim scope: Panel-density examples only: not mating diameters, contact pitch, tolerances, minimum clearances or fabrication dimensions.

Source links: S424 · Evidence trail → (private workspace)

C231D · P231

Amphenol RF identifies 031-70250 as a straight 75-ohm Mini-BNC jack with bayonet coupling.

Claim scope: Exact 031-70250 only.

Source links: S542 · Evidence trail → (private workspace)

C231E · P231

The 031-70250 product fields specify solder contact termination and PCB through-hole termination; its panel-mounting feature is explicitly not applicable.

Claim scope: Exact component attributes; no PCB footprint or assembly instruction imported.

Source links: S542 · Evidence trail → (private workspace)

C231F · P231

The Mini-BNC family page has differing narrative and specification-table descriptions of impedance, frequency and temperature; no single family-wide rating is resolved by this observation.

Claim scope: A source-scope conflict, not a replacement engineering limit.

Source links: S543 · Evidence trail → (private workspace)

Prepare this page for review →Read the evidence method →

Recorded evidence only. An inspection date, publisher label, source link or generated packet is not independent technical review, hardware testing, fabrication approval or a compatibility verdict.