FIELD GUIDESource-led reference
Port & Cable

P230 / Coax / Connector

SMB coaxial connector

SMB is a compact snap-on RF connector family available in multiple system variants.

Also called SMB SubMiniature version B

SMB identity is not evidence for impedance, frequency or cable suitability.

Look for

Identify the snap-on SMB family first, then resolve the exact variant from component documentation.

Claim inspection dates: 2026-10-05, 2026-10-12, 2026-10-22 · Independent review pending

SMB 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.

SMB 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.

SMB 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.

SMB coaxial connector: original recognition drawing, not to scale.

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

Image inspection / P230

See the view. Check its scope.

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

Coupling / identity / electrical requirement. Concept separating family coupling vocabulary from exact identity and electrical requirements. (private workspace)

P230 / Concept — not physical geometry

Coupling / identity / electrical requirement

Compact coaxial identification concept

Three separate text fields; no physical geometry · Concept only

Not to scale. Technical and rights review pending.

Inspect view & provenance (private workspace)
SMB 142144 / side elevation. Exact-part exterior study. Small terminal details are simplified; no dimensions, contact numbering or board footprint. (private workspace)

P230 / Source-observed physical study

SMB 142144 / side elevation

Amphenol RF 142144

Side elevation: mating nose left, PCB terminal side below · Board header

Not to scale. Technical and rights review pending.

Inspect view & provenance (private workspace)
SMB 142144 / board-side exterior. Exact-part board-side study. Positions are qualitative and unnumbered; not a mating-face pinout or hole template. (private workspace)

P230 / Source-observed physical study

SMB 142144 / board-side exterior

Amphenol RF 142144

View toward board-side terminals; not a mating-face view · Board header

Not to scale. Technical and rights review pending.

Inspect view & provenance (private workspace)

The useful distinction

Recognize it. Then verify it.

SMB is a compact snap-on RF connector family available in multiple system variants. [C230A]

Amphenol RF describes its SMB family as using snap-on coupling. [C230D]

The SMB family page distinguishes 50-ohm designs and dedicated 75-ohm variants; the family name alone does not select one impedance. [C230E]

Amphenol RF identifies 142144 as a 50-ohm right-angle SMB jack with push-on coupling and PCB through-hole termination. [C230F]

For 142144, the manufacturer lists solder contact termination and marks the panel-mounting feature Not Applicable. [C230G]

The 142144 drawing separates the side elevation and board-side view from a labelled PCB mounting-hole diagram. [C230H]

Exact example142144 only: Amphenol RF lists push-on mating, a right-angle PCB through-hole jack with solder contact termination, a brass body and contacts, and a PTFE insulator. It is a50-ohm configuration; panel mounting is Not Applicable. These construction and mounting facts do not describe all SMB parts. [C230X]

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 C230F); panel (Claim C230G)S551 · S551Recorded source-scoped values; named examples do not describe every family variant or establish compatibility. Only 142144; no rating or geometry transferred to other SMB parts. These are separate fields for the named component, not a general absence of mounting features throughout SMB.
Coupling / latchsnap-on (Claim C230A); snap-on (Claim C230B); snap-on (Claim C230D); Snap-onS234 · S254 · S541 · S234Named source examples retain separate role, part, view and axis limits; values are not a universal family specification. V39 catalogue-expansion identification fact only; not independent technical approval, fabrication data, wiring instruction, protocol guarantee or end-to-end compatibility proof. V40 engineering-reference fact only; independent human review remains pending. This claim does not approve fabrication, rewiring, substitution, electrical safety, protocol support or end-to-end compatibility. Family-level coupling description, not an exact dimensional interface. Named series only, not every family part: Amphenol RF SMB 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 RFS234Named 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 SMB 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.
SeriesSMBS234Named 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 SMB 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
  • Coupling style or polarity identity does not establish cable type, impedance, frequency range or system compatibility for a specific assembly.
  • No fabrication dimensions or mating-face contact locator is published.
Report a correction to these facts →

Bounded facts, visible unknowns

Specifications and limits

SMB coaxial connector facts and limitations
Documented identificationSMB compact snap-on RF connector family. [C230A]
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 ↑
C230ASource checked · pending review

Amphenol RF identifies SMB as a compact snap-on RF connector family.

Amphenol RF · SMB connectors ↗

Locator: SMB 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.

S234: 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 ↑
C230DSource checked · pending review

Amphenol RF describes its SMB family as using snap-on coupling.

Amphenol RF · Amphenol RF SMB family — coupling and impedance scope ↗

Locator: Overview; Features and Benefits; Specifications mechanical coupling and impedance; typical-characteristics warning.
Access: public page. No new SMB physical view or engineering geometry. Performance remains component- and configuration-specific.

S541: full source recordInspect review dependencies → (private workspace)

Claim scope: Family-level coupling description, not an exact dimensional interface.. Next review due 2027-01-10.

Back to first citation ↑
C230ESource checked · pending review

The SMB family page distinguishes 50-ohm designs and dedicated 75-ohm variants; the family name alone does not select one impedance.

Amphenol RF · Amphenol RF SMB family — coupling and impedance scope ↗

Locator: Overview; Features and Benefits; Specifications mechanical coupling and impedance; typical-characteristics warning.
Access: public page. No new SMB physical view or engineering geometry. Performance remains component- and configuration-specific.

S541: full source recordInspect review dependencies → (private workspace)

Claim scope: Only the cited family scope; no interchangeable geometry or common performance inferred.. Next review due 2027-01-10.

Back to first citation ↑
C230FSource checked · pending review

Amphenol RF identifies 142144 as a 50-ohm right-angle SMB jack with push-on coupling and PCB through-hole termination.

Amphenol RF · Amphenol RF 142144 — exact SMB board-jack identity ↗

Locator: Exact part heading and Product Specifications: coupling, gender, impedance, orientation, termination style and panel-mounting feature.
Access: public page. Exact named component only; no manufacturing dimensions, mating approval, PCB layout or equipment compatibility is established.

S551: full source recordInspect review dependencies → (private workspace)

Claim scope: Only 142144; no rating or geometry transferred to other SMB parts.. Next review due 2027-01-10.

Back to first citation ↑
C230GSource checked · pending review

For 142144, the manufacturer lists solder contact termination and marks the panel-mounting feature Not Applicable.

Amphenol RF · Amphenol RF 142144 — exact SMB board-jack identity ↗

Locator: Exact part heading and Product Specifications: coupling, gender, impedance, orientation, termination style and panel-mounting feature.
Access: public page. Exact named component only; no manufacturing dimensions, mating approval, PCB layout or equipment compatibility is established.

S551: full source recordInspect review dependencies → (private workspace)

Claim scope: These are separate fields for the named component, not a general absence of mounting features throughout SMB.. Next review due 2027-01-10.

Back to first citation ↑
C230HSource checked · pending review

The 142144 drawing separates the side elevation and board-side view from a labelled PCB mounting-hole diagram.

Amphenol RF · Amphenol RF 142144 — customer drawing and viewpoint ↗

Locator: Single-page drawing, revision NC dated 04/15/10; side elevation, board-side view and separately labelled PCB mounting-hole diagram visually inspected.
Access: public pdf text. Exact named component only; no manufacturing dimensions, mating approval, PCB layout or equipment compatibility is established.

S552: full source recordInspect review dependencies → (private workspace)

Claim scope: Board-side structures are not a mating-face pin assignment. No hole sizes or manufacturing dimensions are imported.. Next review due 2027-01-10.

Back to first citation ↑
C230XSource checked · pending review

Exact example142144 only: Amphenol RF lists push-on mating, a right-angle PCB through-hole jack with solder contact termination, a brass body and contacts, and a PTFE insulator. It is a50-ohm configuration; panel mounting is Not Applicable. These construction and mounting facts do not describe all SMB parts.

Amphenol RF · Amphenol RF 142144 — exact SMB board-jack identity ↗

Locator: Exact part heading and Product Specifications: coupling, gender, impedance, orientation, termination style and panel-mounting feature.
Access: public page. Exact named component only; no manufacturing dimensions, mating approval, PCB layout or equipment compatibility is established.

S551: full source recordInspect review dependencies → (private workspace)

Claim scope: Only named Amphenol RF 142144 component example. The142144 example does not generalize its materials, mounting, impedance or ratings to other SMB configurations; no contact map or fabrication geometry is added.. Next review due 2027-01-20.

Suggest a correction to this field note →

Put this field note to work.

Add to discovery trayRecord an unsaved candidate (private workspace)

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 SMB family

Component role
Snap-on connector family; no exact part selected.
Source distinction
Separate 50-ohm and dedicated 75-ohm variants.
What this establishes
Coupling type and electrical specification are different identification fields.
Not established
Exact component, impedance, cable and contact arrangement are not selected.
Next check
Obtain the exact part number and both mating-interface specifications.

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

Evidence, observation & limits

Inspected . C230D · C230E

Amphenol RF SMB family — coupling and impedance scope ↗
V133 observation: Overview; Features and Benefits; Specifications mechanical coupling and impedance; typical-characteristics warning.
Canonical source record S541 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 →

SOURCE-QUALIFIED COAXIAL REFERENCE

Separate the interface, mounting and termination.

Amphenol RF 142144

Source / component role
Right-angle board jack; through-hole termination.
Documented distinction
50 ohm; push-on coupling; solder termination.
What this establishes
An exact identity now supports the exterior study, rather than an unnumbered family example.
Not established
Panel fit, mating part, board layout and equipment support are not established.
Next check
Retain 142144 when locating the matching manufacturer and board documentation.
Inspect the declared view → (private workspace)
Evidence, observation & limits

Inspected . C230F · C230G · C230H

Amphenol RF 142144 — exact SMB board-jack identity ↗
V135 observation: Exact part heading and Product Specifications: coupling, gender, impedance, orientation, termination style and panel-mounting feature.
Canonical source record S551 dated 2026-10-12. Inherited source dates remain unchanged.

Amphenol RF 142144 — customer drawing and viewpoint ↗
V135 observation: Single-page drawing, revision NC dated 04/15/10; side elevation, board-side view and separately labelled PCB mounting-hole diagram visually inspected.
Canonical source record S552 dated 2026-10-12. Inherited source dates remain unchanged.

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

Amphenol RF 142144 / board-side view

Source / component role
Viewed toward the PCB terminal side, not into the mating interface.
Documented distinction
The drawing distinguishes exterior views from its PCB mounting-hole diagram.
What this establishes
The board-side illustration can explain viewpoint without becoming a pinout.
Not established
No contact numbering, terminal mapping, hole pitch or manufacturing footprint is supplied.
Next check
Confirm which side of the component the drawing depicts before comparing it with a cable end.
Inspect the declared view → (private workspace)
Evidence, observation & limits

Inspected . C230H

Amphenol RF 142144 — customer drawing and viewpoint ↗
V135 observation: Single-page drawing, revision NC dated 04/15/10; side elevation, board-side view and separately labelled PCB mounting-hole diagram visually inspected.
Canonical source record S552 dated 2026-10-12. Inherited source dates remain unchanged.

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

Read the exact-component chart and field guide →

Evidence behind this page

Scope first. Source second. Approval separate.

4 linked sources · 7 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

S234 · SMB connectors

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

Within inspection window

Scoped support: Identifies SMB as a compact snap-on RF connector family.

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: SMB overview

S541 · Amphenol RF SMB family — coupling and impedance scope

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

Within inspection window

Scoped support: Family-level snap-on coupling and separate impedance variants. Not an exact component or a mating approval.

Not established / limitations: No new SMB physical view or engineering geometry. Performance remains component- and configuration-specific.

Locator: Overview; Features and Benefits; Specifications mechanical coupling and impedance; typical-characteristics warning.

S551 · Amphenol RF 142144 — exact SMB board-jack identity

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

Within inspection window

Scoped support: Product page identifies a 50-ohm right-angle SMB jack with PCB through-hole termination and push-on coupling. Panel mounting is separately marked Not Applicable.

Not established / limitations: Exact named component only; no manufacturing dimensions, mating approval, PCB layout or equipment compatibility is established.

Locator: Exact part heading and Product Specifications: coupling, gender, impedance, orientation, termination style and panel-mounting feature.

S552 · Amphenol RF 142144 — customer drawing and viewpoint

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

Within inspection window

Scoped support: The physical studies concern exact part 142144. Board-side contacts and PCB hole pattern must not be read as a mating-face pinout. Dimensions are not transcribed.

Not established / limitations: Exact named component only; no manufacturing dimensions, mating approval, PCB layout or equipment compatibility is established.

Locator: Single-page drawing, revision NC dated 04/15/10; side elevation, board-side view and separately labelled PCB mounting-hole diagram visually inspected.

Trace 7 claims to their source records

C230A · P230

Amphenol RF identifies SMB as a compact snap-on RF 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: S234 · Evidence trail → (private workspace)

C230D · P230

Amphenol RF describes its SMB family as using snap-on coupling.

Claim scope: Family-level coupling description, not an exact dimensional interface.

Source links: S541 · Evidence trail → (private workspace)

C230E · P230

The SMB family page distinguishes 50-ohm designs and dedicated 75-ohm variants; the family name alone does not select one impedance.

Claim scope: Only the cited family scope; no interchangeable geometry or common performance inferred.

Source links: S541 · Evidence trail → (private workspace)

C230F · P230

Amphenol RF identifies 142144 as a 50-ohm right-angle SMB jack with push-on coupling and PCB through-hole termination.

Claim scope: Only 142144; no rating or geometry transferred to other SMB parts.

Source links: S551 · Evidence trail → (private workspace)

C230G · P230

For 142144, the manufacturer lists solder contact termination and marks the panel-mounting feature Not Applicable.

Claim scope: These are separate fields for the named component, not a general absence of mounting features throughout SMB.

Source links: S551 · Evidence trail → (private workspace)

C230H · P230

The 142144 drawing separates the side elevation and board-side view from a labelled PCB mounting-hole diagram.

Claim scope: Board-side structures are not a mating-face pin assignment. No hole sizes or manufacturing dimensions are imported.

Source links: S552 · Evidence trail → (private workspace)

C230X · P230

Exact example142144 only: Amphenol RF lists push-on mating, a right-angle PCB through-hole jack with solder contact termination, a brass body and contacts, and a PTFE insulator. It is a50-ohm configuration; panel mounting is Not Applicable. These construction and mounting facts do not describe all SMB parts.

Claim scope: Only named Amphenol RF 142144 component example. The142144 example does not generalize its materials, mounting, impedance or ratings to other SMB configurations; no contact map or fabrication geometry is added.

Source links: S551 · 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.