FIELD GUIDESource-led reference
Port & Cable

P231 / Coax / Connector

Mini-BNC coaxial connector

Mini-BNC is a compact bayonet-style coaxial connector family intended for denser layouts than standard BNC.

Also called Mini-BNC mini BNC HD video mini BNC

Mini-BNC, BNC and HD-BNC are separate interfaces despite related broadcast use and naming.

Look for

Compare coupling geometry and overall size against known BNC and HD-BNC forms before mating.

Claim inspection dates: 2026-10-05, 2026-10-07, 2026-10-12 · Independent review pending

Mini-BNC coaxial connector: three-quarter view. Computer-generated illustration, not a photograph.

Three-quarter view Computer-generated illustration with prior AI visual review. Not a photograph, measurement or compatibility check. Independent technical and rights review pending.

Mini-BNC coaxial connector: mating face. Computer-generated illustration, not a photograph.

Mating face Computer-generated illustration with prior AI visual review. Not a photograph, measurement or compatibility check. Independent technical and rights review pending.

Mini-BNC coaxial connector: fitted in place. Computer-generated illustration, not a photograph.

Fitted in place Computer-generated illustration with prior AI visual review. Not a photograph, measurement or compatibility check. Independent technical and rights review pending.

Mini-BNC coaxial connector: original recognition drawing, not to scale.

Recognition drawing Original schematic, not to scale. Drawing review pending.

Image inspection / P231

See the view. Check its scope.

2 registered views for this reference. Different part examples are not automatically mates; all remain not to scale and independently unapproved.

Mini-BNC / named through-hole board jack. Exact-part qualitative side exterior, with board attachment distinguished from the mating interface. (private workspace)

P231 / Source-observed physical study

Mini-BNC / named through-hole board jack

Amphenol RF 031-70250

Side exterior: mating barrel left, board attachment right · Board header

Not to scale. Technical and rights review pending.

Inspect view & provenance (private workspace)
Conflicting ratings / keep the source scope. Concept preserving disagreement between family narrative and tables without choosing a universal rating. (private workspace)

P231 / Concept — not physical geometry

Conflicting ratings / keep the source scope

Mini-BNC and DIN source-scope concept

Three separate evidence fields; no physical geometry · Concept only

Not to scale. Technical and rights review pending.

Inspect view & provenance (private workspace)
Inspect the illustrationFront-oriented symbol · larger view & look-alikes
Mini-BNC coaxial connector — front-oriented symbol; role not specified; original, not-to-scale identification schematic; drawing review pending
View Front-oriented symbolDepiction Role not specifiedNot to scale · independent drawing review pending

Read the view

Mini-BNC is a distinct documented family

A symbolic face does not establish plug/receptacle role, diameter or clearance.

What it cannot establish: Check exact coupling and part documentation; screen size is not a scale comparison.

Enlargement changes display size only. It does not reveal measured geometry, a pin assignment or an approved mating combination.

Compare a likely look-alike

BNC connector →HD-BNC coaxial connector →

Read the underlying references: S235 · S424. Artwork interpretation remains review-pending.

How to read connector illustrations →

The useful distinction

Recognize it. Then verify it.

Mini-BNC is a compact bayonet-style coaxial connector family intended for denser layouts than standard BNC. [C231A]

Amphenol’s broadcast brief lists Mini-BNC in a distinct 75-ohm column, separate from its BNC and HD-BNC columns. [C231B]

The brief illustrates panel layouts at 15.5 mm pitch for BNC, 13.1 mm for Mini-BNC and 8 mm for HD-BNC. [C231C]

Amphenol RF identifies 031-70250 as a straight 75-ohm Mini-BNC jack with bayonet coupling. [C231D]

The 031-70250 product fields specify solder contact termination and PCB through-hole termination; its panel-mounting feature is explicitly not applicable. [C231E]

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. [C231F]

Source-scoped identification facts

Each value retains its exact example, role and measurement axis. Facts from different parts must not be combined into an invented component.

Documented examples; not a mating drawing or compatibility approval
Mountingthrough-hole (Claim C231E); panel (Claim C231E)S542Recorded source-scoped values; named examples do not describe every family variant or establish compatibility. Exact component attributes; no PCB footprint or assembly instruction imported.
Coupling / latchbayonet (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.
ManufacturerAmphenol RFS235Named 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 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.
SeriesMini-BNCS235Named 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 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.

Not recorded: Nominal contacts, Positions / cavity span, Populated contacts, Contact rows, Contact pitch, Dimensions / axis, Connector role, Contact gender / arrangement, Keying / polarization, Shell / form, Exact part / implementation, Recorded markings, View convention. Unknown fields stay unknown; illustrations supply no measurements or pin assignments.

Recorded variant and source limits
  • No universal contact count, numbering, mating dimensions, clearances or tolerances are published here.
  • The brief is undated; do not apply its frequency row to every product, variant or current revision.
  • Retained pitch context (excluded from normalized contact/body field): 15.5 mm / Source-described pitch / centerline. Panel-density examples only: not mating diameters, contact pitch, tolerances, minimum clearances or fabrication dimensions. Sources: S424: Page 1: interface-density illustration and BNC/Mini-BNC/HD-BNC electrical specification columns.
Report a correction to these facts →

Bounded facts, visible unknowns

Specifications and limits

Mini-BNC coaxial connector facts and limitations
Documented identificationCompact Mini-BNC bayonet-style coaxial connector family. [C231A]
Mini-BNC source contextAmphenol’s broadcast brief lists Mini-BNC in a distinct 75-ohm column, separate from its BNC and HD-BNC columns. [C231B]
Mini-BNC source contextThe brief illustrates panel layouts at 15.5 mm pitch for BNC, 13.1 mm for Mini-BNC and 8 mm for HD-BNC. [C231C]
Mechanical dimensionsNo independently reviewed mechanical drawing in V39; do not use this page for fabrication, fit testing or tolerance work.
Engineering pinoutSource-checked engineering profile available; independent review pending. Open engineering profile →
Verified device listNot included. Check exact device and accessory documentation.
A boundary, not an omission to guess around.

Use the source-backed form or position count only for identification. Resolve ratings, protocol, direction, wiring, cable construction and exact device support from the relevant equipment and component documentation.

Before you connect

What to check

  1. Identify the exact connector family and variant from the equipment or cable documentation.
  2. Keep shape, contact count, protocol, electrical rating and device support as separate facts.
  3. Do not force, rewire or adapt a connector from this recognition record; resolve the remaining requirements first.
Trace a supported connection class →

What is not established

This field note does not approve a connection, adapter, cable assembly, rewiring scheme or fabricated part. It intentionally omits unsupported pin assignments and mechanical tolerances.

Your next step

Move from the form to the requirement.

Read the engineering reference Source-scoped details, orientation and explicit unknowns.Work through a connection Choose your task before deciding on a cable.Explore this evidence trail Inspect the claims and their dependencies. (private workspace)

The source trail

Evidence for this page

AI-assisted inspection is not independent engineering review. Source scope and access limitations are disclosed below. Procedural checklists are editorial requirements, not hardware measurements.

Back to first citation ↑
C231ASource checked · pending review

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

Amphenol RF · Mini-BNC connectors ↗

Locator: Mini-BNC overview
Access: public page. 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.

S235: full source recordInspect review dependencies → (private workspace)

Claim scope: V39 catalogue-expansion identification fact only; not independent technical approval, fabrication data, wiring instruction, protocol guarantee or end-to-end compatibility proof.. Next review due 2027-01-03.

Back to first citation ↑
C231BSource checked · pending review

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

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

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

S424: full source recordInspect review dependencies → (private workspace)

Claim scope: Page 1 of an undated brief; not a universal Mini-BNC family specification or a substitute for an exact product drawing.. Next review due 2027-01-05.

Back to first citation ↑
C231CSource checked · pending review

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

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

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

S424: full source recordInspect review dependencies → (private workspace)

Claim scope: Panel-density examples only: not mating diameters, contact pitch, tolerances, minimum clearances or fabrication dimensions.. Next review due 2027-01-05.

Back to first citation ↑
C231DSource checked · pending review

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

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

Locator: Heading; Gender, Impedance, Coupling Mechanism, Contact Termination, Panel Mounting Feature and Termination Style. Linked drawing 31-70250 revision A inspected separately.
Access: public page. Drawing side exterior inspected. Dimensions, PCB drilling pattern and contact interiors are not transferred.

S542: full source recordInspect review dependencies → (private workspace)

Claim scope: Exact 031-70250 only.. Next review due 2027-01-10.

Back to first citation ↑
C231ESource checked · pending review

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

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

Locator: Heading; Gender, Impedance, Coupling Mechanism, Contact Termination, Panel Mounting Feature and Termination Style. Linked drawing 31-70250 revision A inspected separately.
Access: public page. Drawing side exterior inspected. Dimensions, PCB drilling pattern and contact interiors are not transferred.

S542: full source recordInspect review dependencies → (private workspace)

Claim scope: Exact component attributes; no PCB footprint or assembly instruction imported.. Next review due 2027-01-10.

Back to first citation ↑
C231FSource checked · pending review

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.

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

Locator: Overview and Key Technical Details compared with Electrical and Environmental specification tables.
Access: public page. Narrative and table differ on impedance, frequency and temperature scope. Exact application rating remains unresolved.

S543: full source recordInspect review dependencies → (private workspace)

Claim scope: A source-scope conflict, not a replacement engineering limit.. Next review due 2027-01-10.

Suggest a correction to this field note →

Common questions

Questions this record can help resolve

BNC, Mini-BNC and HD-BNC: are they the same connector?A panel-density illustration is not a mating-interface drawing, and similar names do not identify the same counterpart.Does an HD-BNC connector guarantee 75 ohms or 12G-SDI?Separate physical form, impedance, the named 12G subset and a complete path’s operating requirements.

Put this field note to work.

Add to discovery trayRecord an unsaved candidate (private workspace)

Compare look-alikes: BNC versus Mini-BNC versus HD-BNC

Candidate selection does not confirm the identity or capabilities of your physical item.

SOURCE-QUALIFIED COMPACT COAXIAL REFERENCE

Keep the component identity beside the specification.

Amphenol RF 031-70250

Component role
Straight PCB through-hole jack; panel-mount feature not applicable.
Source distinction
75 ohm, bayonet coupling and solder contact termination.
What this establishes
This exact board component is not a generic small BNC cable end.
Not established
No PCB footprint, mounting stack or mating-contact dimensions provided.
Next check
Read the exact customer drawing and board specification before selecting a layout.
Inspect the declared view → (private workspace)
Evidence, observation & limits

Inspected . C231D · C231E

Amphenol RF 031-70250 — Mini-BNC board jack ↗
V133 observation: Heading; Gender, Impedance, Coupling Mechanism, Contact Termination, Panel Mounting Feature and Termination Style. Linked drawing 31-70250 revision A inspected separately.
Canonical source record S542 dated 2026-10-12. The V133 visit is recorded separately; inherited source dates are unchanged.

No hardware test, independent technical approval or rights clearance is asserted.

Amphenol RF Mini-BNC family page

Component role
Family overview and tables describe different scopes.
Source distinction
Narrative and table differ on impedance, frequency and temperature.
What this establishes
Do not choose the larger number or generalize the exact 031-70250 rating.
Not established
The page does not resolve one uniform rating for every Mini-BNC product.
Next check
Keep the exact model, test conditions and assembly documentation together.

No source-observed physical view is selected for this row.

Evidence, observation & limits

Inspected . C231F

Amphenol RF Mini-BNC family — conflicting scope descriptions ↗
V133 observation: Overview and Key Technical Details compared with Electrical and Environmental specification tables.
Canonical source record S543 dated 2026-10-12. The V133 visit is recorded separately; inherited source dates are unchanged.

No hardware test, independent technical approval or rights clearance is asserted.

Read the compact coaxial reference and field guide →

Evidence behind this page

Scope first. Source second. Approval separate.

4 linked sources · 6 scoped claims · 0 sources with inspection/access flags.

Page scope: catalogue_expansion_v39

Assessment 2026-10-22 · earliest scheduled source review 2027-01-03. This is a recorded-date assessment, not a live source check. Page-level independent review is not established by this panel.

Inspect 4 source scopes, access limits and dates

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

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.

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 6 claims to their source records

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 → (private workspace)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.