FIELD GUIDESource-led reference
Port & Cable

P019 / Audio / Connector

3.5 mm TRS connector

A 3.5 mm TRS plug has three conductive sections: tip, ring and sleeve.

Also called 3.5mm stereo aux TRS headphone TRS

Three contacts do not, by themselves, describe the signal assignment.

Look for

Compare the two insulating bands with TRRS. Look at the plug itself rather than assuming every small audio socket is wired the same way.

Claim inspection dates: 2026-10-01, 2026-10-11 · Independent review pending

3.5 mm TRS 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.

3.5 mm TRS 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.

3.5 mm TRS 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.

3.5 mm TRS connector: original recognition drawing, not to scale.

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

Pins & wiring

Pinout

Choose the exact wiring. Pin numbers follow its stated view; a schematic does not establish physical positions. Check your exact device before wiring.

What the status labels mean
Confirmed
Recorded research passes agree within this variant; this is not independent human review or hardware validation.
Single source
Only one underlying document, or one pass, supports this assignment.
Device-specific
Supported for the named equipment or wiring only. Check your device’s manual.
Unverified
Missing or conflicting evidence. Do not wire from this row.
Not connected
The source explicitly says NC, no contact or no pin for this wiring.
Wiring variant

Unbalanced stereo (Extron)

Device-specific wiring. Check your device’s manual before connecting or applying power.

View and evidence limits

Plug contact convention, read along the plug from its exposed tip toward the cable. Local ordinal 1=Tip, 2=Ring, 3=Sleeve. No universal numeric solder-lug or PCB-pad numbering is claimed.

  • P019 3.5 mm TRS — Agree (tip left, ring right, sleeve ground) — Balanced-mono and device-specific uses recorded as variants.
  • The 1/2/3 numbers here are explicit local contact-position ordinals, not a manufacturer jack-terminal numbering standard.
  • Insert send/return, biased microphone inputs, remote-control and other proprietary 3.5 mm TRS arrangements are unverified outside the exact examples below.
  • No revision/date is printed on the retrieved SC4 datasheet; its content is identified by URL and SHA-256.
3.5 mm TRS contact-designation referencePlug contact convention, read along the plug from its exposed tip toward the cable. Local ordinal 1=Tip, 2=Ring, 3=Sleeve. No universal numeric solder-lug or PCB-pad numbering is claimed.SCHEMATIC · physical positions unconfirmedNot to scale · check the named wiring and device manual1: Tip — Left (device_specific)12: Ring — Right (device_specific)23: Sleeve — Ground (device_specific)3powergrounddataConfigshieldNCUnknown
Schematic only · physical contact positions unconfirmed. Original drawing · not to scale. Scroll sideways if needed.
Unbalanced stereo (Extron) — source-scoped contact map
PinSignalWhat it doesStatus
1Tip — LeftControl, detection or configuration connection; check the source and device.Device-specific
Sources
2Ring — RightControl, detection or configuration connection; check the source and device.Device-specific
Sources
3Sleeve — GroundControl, detection or configuration connection; check the source and device.Device-specific
Sources
Sources (1)

Balanced mono (Extron)

Device-specific wiring. Check your device’s manual before connecting or applying power.

View and evidence limits

Plug contact convention, read along the plug from its exposed tip toward the cable. Local ordinal 1=Tip, 2=Ring, 3=Sleeve. No universal numeric solder-lug or PCB-pad numbering is claimed.

  • P019 3.5 mm TRS — Agree (tip left, ring right, sleeve ground) — Balanced-mono and device-specific uses recorded as variants.
  • The 1/2/3 numbers here are explicit local contact-position ordinals, not a manufacturer jack-terminal numbering standard.
  • Insert send/return, biased microphone inputs, remote-control and other proprietary 3.5 mm TRS arrangements are unverified outside the exact examples below.
  • No revision/date is printed on the retrieved SC4 datasheet; its content is identified by URL and SHA-256.
3.5 mm TRS contact-designation referencePlug contact convention, read along the plug from its exposed tip toward the cable. Local ordinal 1=Tip, 2=Ring, 3=Sleeve. No universal numeric solder-lug or PCB-pad numbering is claimed.SCHEMATIC · physical positions unconfirmedNot to scale · check the named wiring and device manual1: Tip — + (device_specific)12: Ring — − (device_specific)23: Sleeve — Ground (device_specific)3powergrounddataConfigshieldNCUnknown
Schematic only · physical contact positions unconfirmed. Original drawing · not to scale. Scroll sideways if needed.
Balanced mono (Extron) — source-scoped contact map
PinSignalWhat it doesStatus
1Tip — +Control, detection or configuration connection; check the source and device.Device-specific
Sources
2Ring — −Control, detection or configuration connection; check the source and device.Device-specific
Sources
3Sleeve — GroundControl, detection or configuration connection; check the source and device.Device-specific
Sources
Sources (1)

RODE SC4 black TRS microphone input

Device-specific wiring. Check your device’s manual before connecting or applying power.

View and evidence limits

Plug contact convention, read along the plug from its exposed tip toward the cable. Local ordinal 1=Tip, 2=Ring, 3=Sleeve. No universal numeric solder-lug or PCB-pad numbering is claimed.

  • P019 3.5 mm TRS — Agree (tip left, ring right, sleeve ground) — Balanced-mono and device-specific uses recorded as variants.
  • The MIC bracket covers both tip and ring in the SC4 Demo Wiring diagram. The drawing does not by itself specify an internal short or summing circuit. This is the adapter input, not a universal camera/RODE microphone wiring rule.
  • The 1/2/3 numbers here are explicit local contact-position ordinals, not a manufacturer jack-terminal numbering standard.
  • Insert send/return, biased microphone inputs, remote-control and other proprietary 3.5 mm TRS arrangements are unverified outside the exact examples below.
  • No revision/date is printed on the retrieved SC4 datasheet; its content is identified by URL and SHA-256.
3.5 mm TRS contact-designation referencePlug contact convention, read along the plug from its exposed tip toward the cable. Local ordinal 1=Tip, 2=Ring, 3=Sleeve. No universal numeric solder-lug or PCB-pad numbering is claimed.SCHEMATIC · physical positions unconfirmedNot to scale · check the named wiring and device manual1: Tip — MIC (device_specific)12: Ring — MIC (device_specific)23: Sleeve — GROUND (device_specific)3powergrounddataConfigshieldNCUnknown
Schematic only · physical contact positions unconfirmed. Original drawing · not to scale. Scroll sideways if needed.
RODE SC4 black TRS microphone input — source-scoped contact map
PinSignalWhat it doesStatus
1Tip — MICControl, detection or configuration connection; check the source and device.Device-specific
Sources
2Ring — MICControl, detection or configuration connection; check the source and device.Device-specific
Sources
3Sleeve — GROUNDControl, detection or configuration connection; check the source and device.Device-specific
Sources
Sources (1)

Image inspection / P019

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.

NTP3RC / right-angle profile. Upper-right side elevation in ST-NTP3RC. Exact part, qualitative side exterior. The cable exit is not a signal-direction arrow. (private workspace)

P019 / Source-observed physical study

NTP3RC / right-angle profile

Neutrik NTP3RC

Upper-right side elevation in ST-NTP3RC · Cable plug / cable end

Not to scale. Technical and rights review pending.

Inspect view & provenance (private workspace)
3.5 mm TRS connector: Two insulating bands / three metal sections. Side exterior of cable plug; longitudinal insulator cues. Qualitative source-linked recognition study, not a pinout or a dimensional guide. (private workspace)

P019 / Inherited recognition study

3.5 mm TRS connector

3.5 mm TRS connector

Side exterior of cable plug; longitudinal insulator cues · Cable plug / cable end

Not to scale. Technical and rights review pending.

Inspect view & provenance (private workspace)

Visual atlas / P019 / 2026

Recognize the right physical clue.

FIGURE · REVIEW PENDING
3.5 mm TRS connector: Two insulating bands / three metal sections. Side exterior of cable plug; longitudinal insulator cues. Qualitative source-linked recognition study, not a pinout or a dimensional guide.
Cable-end plug. Side exterior of cable plug; longitudinal insulator cues.

What to look for

Two insulating bands / three metal sections

What the drawing does not prove

Band counts are intentional; length, spacing and tip proportions are unmeasured.

Bands cannot tell you CTIA/OMTP, microphone support or analog/digital function.

No fabrication dimensions, conductor routing, guaranteed fit or device approval. For electrical, power and optical interfaces, follow the original equipment instructions.

Figure evidence, orientation & usage rights

Uses previously recorded V112 manufacturer claim/source inspections; October 2026 supplementary public-source spot checks are documented separately, not treated as a refreshed approval.

Original Port & Cable interpretive vector, no third-party photo, copied CAD, logo or vendor drawing. Third-party product photos, logos and source drawings are not redistributed. No independent technical or rights certification is claimed.

Original claim identifiers: C019A (private workspace). Legacy evidence dates and rights assessments remain as recorded.

The useful distinction

Recognize it. Then verify it.

A 3.5 mm TRS plug has three conductive sections: tip, ring and sleeve. [C019A]

Neutrik identifies NTP3RC as a three-pole 3.5 mm male audio plug with solder termination; its customer drawing shows the plug axis at a right angle to the cable exit. [C019B]

Identify the documented form

Count the conductive plug sections before asking what signal they carry.

  1. TRS names Tip, Ring and Sleeve conductive sections; count the plug sections rather than hidden jack springs. S022
  2. The cited Neutrik example is a male cable plug with a right-angle cable exit, not a socket or a universal wiring map. S022 · S523
Documented identity facts; exact part and variant scope remains with each value
Nominal contacts3S022phone plug physical contact sequence; nominal engineering count, not automatically positions, population or a device wiring map. phone plug physical contact sequence
Positions / cavity spanNot recordedNot recorded in a normalized source-scoped field. Consult the exact part/revision; no value inferred from illustrations.
Populated contactsNot recordedNot recorded in a normalized source-scoped field. Consult the exact part/revision; no value inferred from illustrations.
Connector roleplug; plug (Neutrik NTP3RC)S022 · S022 · S523Recorded source-scoped values; named examples do not describe every family variant or establish compatibility. phone plug physical contact sequence Exact NTP3RC component role and exterior; no channel mapping or device compatibility.
Rows, pitch, dimensions, keying and view limits
Additional scoped facts; not a fabrication drawing or a mating approval
Contact rowsNot recordedNot recorded in a normalized source-scoped field. Consult the exact part/revision; no value inferred from illustrations.
Contact pitchNot recordedNot recorded in a normalized source-scoped field. Consult the exact part/revision; no value inferred from illustrations.
Dimensions / axis3.5 mm Nominal plug family diameterS022Recorded source-scoped values; named examples do not describe every family variant or establish compatibility. nominal_identifier; phone plug physical contact sequence
Coupling / latchchuck-type cable strain relief (NTP3RC)S871Separate exact examples; retain each value’s source, role, axis and part scope. Exact named example NTP3RC: 3.5mm three-pole male right-angle cable plug. Exact example only; no universal geometry, electrical compatibility, fabrication approval or wiring instruction. Cable clamp range is not plug mating diameter, which remains the existing3.5mm value.
Keying / polarizationNot recordedNot recorded in a normalized source-scoped field. Consult the exact part/revision; no value inferred from illustrations.
View conventionLongitudinal plug view from the exposed tip toward the cable body: Tip → Ring → Sleeve.S022Recorded source-scoped values; named examples do not describe every family variant or establish compatibility. Existing engineering orientation text; source/part/view remains controlling.
Contact gender / arrangementNot recordedNot recorded in a normalized source-scoped field. Consult the exact part/revision; no value inferred from illustrations.
Mountingsolder contacts (NTP3RC)S871Separate exact examples; retain each value’s source, role, axis and part scope. Exact named example NTP3RC: 3.5mm three-pole male right-angle cable plug. Exact example only; no universal geometry, electrical compatibility, fabrication approval or wiring instruction. Cable clamp range is not plug mating diameter, which remains the existing3.5mm value.
Shell / formNot recordedNot recorded in a normalized source-scoped field. Consult the exact part/revision; no value inferred from illustrations.
ManufacturerNeutrik (NTP3RC)S022 · S523Recorded source-scoped values; named examples do not describe every family variant or establish compatibility. Exact NTP3RC component role and exterior; no channel mapping or device compatibility.
Series3.5 mm TRS (NTP3RC)S022 · S523Recorded source-scoped values; named examples do not describe every family variant or establish compatibility. Exact NTP3RC component role and exterior; no channel mapping or device compatibility.
Exact part / implementationNTP3RC (NTP3RC)S022 · S523Recorded source-scoped values; named examples do not describe every family variant or establish compatibility. Exact NTP3RC component role and exterior; no channel mapping or device compatibility.
Recorded markingsNot recordedNot recorded in a normalized source-scoped field. Consult the exact part/revision; no value inferred from illustrations.

Keep this limit: TRS geometry alone is not an assignment of stereo, balanced, mono or insert service. S022

Make the next check

Check the device’s headphone, line, microphone or other documented audio role and cable wiring.

Existing source inspection and AI review remain distinct from independent technical review. A matching form does not establish a safe connection.

Recorded variant and source limits
  • No stereo, balanced, mono or insert function is inferred from TRS geometry alone.
  • No manufacturing tolerances are published.
  • Unbalanced stereo (Extron): Plug contact convention, read along the plug from its exposed tip toward the cable. Local ordinal 1=Tip, 2=Ring, 3=Sleeve. No universal numeric solder-lug or PCB-pad numbering is claimed.
  • Balanced mono (Extron): Plug contact convention, read along the plug from its exposed tip toward the cable. Local ordinal 1=Tip, 2=Ring, 3=Sleeve. No universal numeric solder-lug or PCB-pad numbering is claimed.
  • RODE SC4 black TRS microphone input: Plug contact convention, read along the plug from its exposed tip toward the cable. Local ordinal 1=Tip, 2=Ring, 3=Sleeve. No universal numeric solder-lug or PCB-pad numbering is claimed.
Report a correction to this identification or view →

Bounded facts, visible unknowns

Specifications and limits

3.5 mm TRS connector facts and limitations
Nominal diameter3.5 mm; not a tolerance drawing [C019A]
Conductive sections3: tip / ring / sleeve [C019A]
Mechanical dimensionsNo independently reviewed mechanical drawing in this release; do not use this page for fabrication.
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.

This record is an identification starting point. It does not provide measured mating tolerances, electrical approval, or a list of verified device models. Use the original device and accessory documentation to resolve the remaining requirements.

Before you connect

What to check

  1. Identify the jack’s intended input or output role.
  2. Check the equipment’s signal and contact assignment.
  3. Distinguish analog TRS from a similarly sized mini optical connection.
Trace a supported connection class →

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 ↑
C019ASource checked · pending review

A 3.5 mm TRS plug has three conductive sections: tip, ring and sleeve.

Neutrik · NTP3RC miniature phone plug ↗

Locator: Product identification
Access: public page.

S022: full source recordInspect review dependencies → (private workspace)

Claim scope: Consumer identification / documented standard or product class only. Next review due 2026-12-30.

Back to first citation ↑
C019BSource checked · pending review

Neutrik identifies NTP3RC as a three-pole 3.5 mm male audio plug with solder termination; its customer drawing shows the plug axis at a right angle to the cable exit.

Neutrik · NTP3RC miniature phone plug ↗

Locator: Product identification
Access: public page.

S022: full source recordNeutrik · Neutrik NTP3RC customer drawing ST-NTP3RC ↗

Locator: Sheet 1 of 1; upper-right side elevation. Revision A, changed 30-Jul-2012.
Access: public pdf text. Exact NTP3RC qualitative exterior and perpendicular cable exit; not scale geometry or contact wiring. Raw source files are not bundled; linked observation and locator retained.

S523: full source recordInspect review dependencies → (private workspace)

Claim scope: Exact NTP3RC component role and exterior; no channel mapping or device compatibility.. Next review due 2027-01-09.

Suggest a correction to this field note →

Common questions

Questions this record can help resolve

Does VGA carry audio?Keep the conventional VGA video path separate from the audio path and any combined cable assembly.Is Mini-TOSLINK the same as a 3.5 mm headphone plug?Similar size is not a signal specification; check the exact socket’s documented role.Does a Mini-TOSLINK adapter convert analog audio?Distinguish optical form adaptation from signal conversion and device capability.

Audio connection desk

Follow the signal beyond the plug

Signal roles, channel layouts and power requirements are distinct from connector shape. No hardware approval is implied.

Audio deskAudio patch sheet

Put this field note to work.

Add to discovery trayRecord an unsaved candidate (private workspace)

Compare look-alikes: 3.5 mm TRS vs TRRS

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

SOURCE-QUALIFIED AUDIO REFERENCE

Separate contact count from equipment role.

Neutrik NTP3RC

Role
Male cable plug; right-angle cable exit
Contacts
Three conducting sections: tip, ring and sleeve.
Meaning
Component geometry only; the connected equipment chooses the signal role.
Not established
Left/right, balanced audio, microphone support and adapter fit are not established.
Next check
Read the exact port function and cable construction before choosing an adapter.
Inspect the declared view → (private workspace)
Evidence, observation & limits

Inspected . C019B

NTP3RC miniature phone plug ↗
Product identification
Canonical source record S022 dated 2026-10-01. The V129 visit is recorded separately; inherited source dates are unchanged.

Neutrik NTP3RC customer drawing ST-NTP3RC ↗
Sheet 1 of 1; upper-right side elevation. Revision A, changed 30-Jul-2012.
Canonical source record S523 dated 2026-10-11. The V129 visit is recorded separately; inherited source dates are unchanged.

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

Read the illustrated audio chart and field guide →

Evidence behind this page

Scope first. Source second. Approval separate.

2 linked sources · 2 scoped claims · 0 sources with inspection/access flags.

Page scope: consumer_pilot

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 2 source scopes, access limits and dates

S022 · NTP3RC miniature phone plug

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

Within inspection window

Scoped support: 3.5 mm, 3-pole phone plug physical example.

Not established / limitations:

Locator: Product identification

S523 · Neutrik NTP3RC customer drawing ST-NTP3RC

Neutrik · Manufacturer / product-owner domain · inspected 2026-10-11 · due 2027-01-09

Within inspection window

Scoped support: Exact NTP3RC qualitative exterior and perpendicular cable exit; not scale geometry or contact wiring.

Not established / limitations: Exact NTP3RC qualitative exterior and perpendicular cable exit; not scale geometry or contact wiring. Raw source files are not bundled; linked observation and locator retained.

Locator: Sheet 1 of 1; upper-right side elevation. Revision A, changed 30-Jul-2012.

Trace 2 claims to their source records

C019A · P019

A 3.5 mm TRS plug has three conductive sections: tip, ring and sleeve.

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

Source links: S022 · Evidence trail → (private workspace)

C019B · P019

Neutrik identifies NTP3RC as a three-pole 3.5 mm male audio plug with solder termination; its customer drawing shows the plug axis at a right angle to the cable exit.

Claim scope: Exact NTP3RC component role and exterior; no channel mapping or device compatibility.

Source links: S022 · S523 · 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.