Barrel - Audio Connectors

Image Part Number Description / PDF Quantity Rfq
SJ-43515TS-SMT-TR

SJ-43515TS-SMT-TR

CUI Devices

CONN JACK 4COND 3.5MM SMD R/A

21442

RTT8702X

RTT8702X

Switchcraft / Conxall

CONN JACK TWIN STEREO 4.39MM R/A

788

SP-3540B

SP-3540B

CUI Devices

AUDIO PLUG, 3.5 MM, STRAIGHT, 4

1103

SJ1-3533

SJ1-3533

CUI Devices

CONN JACK STEREO 3.5MM R/A

2440

SJ2-35853A-SMT-TR

SJ2-35853A-SMT-TR

CUI Devices

AUDIO JACK, 3.5 MM, RT, 3 CONDUC

733

SP-3541

SP-3541

CUI Devices

AUDIO PLUG, PCB MOUNT, 3.5 MM, R

1195

SJ2-2532B-SMT-TR

SJ2-2532B-SMT-TR

CUI Devices

AUDIO JACK, 2.5 MM, RT, 2 CONDUC

1156

50-00946

50-00946

Tensility International Corporation

CONN PLUG 3.5MM STEREO MOLD STYL

2414

E11BPKG

E11BPKG

Switchcraft / Conxall

CONN JACK MONO 6.35MM PNL MNT

1

STX-3500-4NTR

STX-3500-4NTR

Kycon

CONN JACK STEREO 3.5MM SMD R/A

4957

SJ-3503-SMT-TR

SJ-3503-SMT-TR

CUI Devices

CONN JACK STEREO 3.5MM SMD R/A

1927

SJ2-25424D-SMT-TR

SJ2-25424D-SMT-TR

CUI Devices

AUDIO JACK, 2.5 MM, RT, 4 CONDUC

979

RCJ-041

RCJ-041

CUI Devices

CONN RCA JACK MONO 3.2MM R/A

11858

STX-3500-3NTR

STX-3500-3NTR

Kycon

CONN JACK STEREO 3.5MM SMD R/A

1818

SJ1-3544

SJ1-3544

CUI Devices

CONN JACK STEREO 3.5MM R/A

332

ASJ-137-J-T/R

ASJ-137-J-T/R

Adam Tech

AUDIO JACK

987

SJ-2509N

SJ-2509N

CUI Devices

CONN JACK STEREO 2.5MM R/A

0

S-H902

S-H902

TubeDepot

CLIFF (UK) 502 1/4 JACK

59

TJ-108

TJ-108

NEXUS (Amphenol NEXUS Technologies)

TELEPHONE JACK INLINE 8 CONDUCTO

39

SR-2501

SR-2501

CUI Devices

CONN JACK STEREO 2.5MM

3357

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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