Barrel - Audio Connectors

Image Part Number Description / PDF Quantity Rfq
BPJF02AUX

BPJF02AUX

Switchcraft / Conxall

CONN RCA JACK MONO 3.2MM PNL MT

109

270F

270F

Switchcraft / Conxall

1/4" PLUG W/ FLEX RELIEF, MONO,

92

KLP42X-61-WW/RR

KLP42X-61-WW/RR

Kycon

STK RCA JACK 2X2 WHT WHT OVR RED

475

SJ2-35043A-SMT-TR

SJ2-35043A-SMT-TR

CUI Devices

AUDIO JACK, 3.5 MM, RT, 4 CONDUC

332

SJ-3598

SJ-3598

CUI Devices

CONN JACK STEREO 3.5MM R/A

2944

297F

297F

Switchcraft / Conxall

1/4" PLUG W/ FLEX RELIEF, STEREO

42

SJ2-3593C-SMT-TR

SJ2-3593C-SMT-TR

CUI Devices

AUDIO JACK, 3.5 MM, RT, 3 CONDUC

981

STX-3120-5B-577C

STX-3120-5B-577C

Kycon

STEREO JACK, ALL PLASTIC, LT GRE

2139

4833.2300

4833.2300

Schurter

CONN JACK STEREO 6.35MM PNL MNT

63

STX-2550-3NTR

STX-2550-3NTR

Kycon

STEREO JACK 2.5MM, SMT NON-THREA

1000

6880

6880

Pomona Electronics

CONN RCA JACK MONO 3.2MM

427

SJ-3579AN

SJ-3579AN

CUI Devices

CONN JACK STEREO R/A 3.5MM PCB

206

SJ2-25404A-SMT-TR

SJ2-25404A-SMT-TR

CUI Devices

AUDIO JACK, 2.5 MM, RT, 4 CONDUC

1044

QM2PB-AU

QM2PB-AU

Tuchel / Amphenol

1/4" PHONE STR MONO BLACK GOLD

167

RN112BPC

RN112BPC

Switchcraft / Conxall

CONN JACK STEREO 6.35MM R/A

2833

KS3P

KS3P

Tuchel / Amphenol

CONN PLUG STEREO 3.5MM 3COND

906

502G

502G

TubeDepot

CLIFF (UK) 502G GOLD 1/4 JACK

24

SR-6330

SR-6330

CUI Devices

AUDIO JACK, 6.3 MM, STRAIGHT, 3

4021

50-00502

50-00502

Tensility International Corporation

CONN PLUG STEREO 3.5MM 3COND

3663

SJ2-25404B-SMT-TR

SJ2-25404B-SMT-TR

CUI Devices

AUDIO JACK, 2.5 MM, RT, 4 CONDUC

1239

Barrel - Audio Connectors

1. Overview

Barrel audio connectors are cylindrical electro-mechanical interfaces primarily used for analog audio signal transmission or low-voltage power delivery. Defined by their coaxial structure with center pin and outer sleeve contacts, these connectors ensure reliable connectivity in audio equipment. Their importance in modern technology stems from their cost-effectiveness, durability, and ability to maintain signal integrity in critical applications ranging from consumer electronics to professional audio systems.

2. Major Types and Functional Classification

TypeFunctional CharacteristicsApplication Examples
Standard Barrel3.5mm/6.35mm diameter, unbalanced signal transmissionHeadphone jacks, guitar cables
Locking BarrelThreaded coupling mechanism for vibration resistanceStage monitoring systems
Miniature Barrel2.5mm/3.0mm size with compact designPortable audio devices
Bantam ConnectorDouble-row configuration for space-constrained panelsProfessional mixing consoles

3. Structure and Components

Typical construction includes: - Center Contact: Gold-plated phosphor bronze for signal transmission - Insulation Sleeve: High-temperature resistant thermoplastic - Outer Contact: Spring-loaded brass with EMI shielding - Housing: Nickel-plated brass or durable polymer The three-point contact design ensures mechanical stability while maintaining electrical continuity.

4. Key Technical Specifications

ParameterSignificance
Impedance (10k -1M )Affects signal fidelity in audio circuits
Contact Resistance ( 5m )Determines power transmission efficiency
Durability (5000+ cycles)Reliability indicator for frequent connections
Frequency Range (20Hz-20kHz)Audio signal bandwidth compatibility
Shielding Effectiveness ( 60dB)EMI/RFI interference reduction

5. Application Fields

  • Consumer Electronics: Smartphones, laptops
  • Professional Audio: Mixing consoles, studio monitors
  • Instrumentation: Electric guitars, synthesizers
  • Medical Devices: Patient monitoring systems

6. Leading Manufacturers and Products

ManufacturerRepresentative Product
Amphenol AudioNE800 Series Switchcraft jacks
NeutrikNCJ6FX nickel-plated connectors
SwitchcraftONA Series locking audio connectors
MolexMicro-Lock plus contact systems

7. Selection Recommendations

Consider: 1. Mechanical requirements (panel space, insertion force) 2. Electrical parameters (impedance matching, current rating) 3. Environmental factors (temperature range, corrosion resistance) 4. Termination type (solder vs. PCB mount) 5. Compliance standards (RoHS, REACH) For live sound applications, prioritize locking mechanisms and gold-plated contacts.

8. Industry Trends

Current trends include: - Miniaturization for wearable devices (sub-2mm designs) - Integration with digital signal paths (analog-digital hybrid connectors) - Enhanced shielding for 5G coexistence - Biodegradable polymer housing development - Smart connectors with integrated presence detection Market growth projected at 4.2% CAGR through 2027 driven by immersive audio technologies.

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