Barrel - Audio Connectors

Image Part Number Description / PDF Quantity Rfq
STX-2000-3N

STX-2000-3N

Kycon

CONN JACK STEREO 2.5MM R/A

1461

SJ1-3515-SMT-TR-GR

SJ1-3515-SMT-TR-GR

CUI Devices

CONN JACK STEREO 3.5MM SMD R/A

1307

MJ1-2503A

MJ1-2503A

CUI Devices

CONN JACK MONO 2.5MM R/A

39945

SJ2-35654A-SMT-TR

SJ2-35654A-SMT-TR

CUI Devices

AUDIO JACK, 3.5 MM, RT, 5 CONDUC

1216

SJ2-25934D-SMT-TR

SJ2-25934D-SMT-TR

CUI Devices

AUDIO JACK, 2.5 MM, RT, 4 CONDUC

0

SJ1-3513

SJ1-3513

CUI Devices

CONN JACK STEREO 3.5MM R/A

23918

SJ2-25974B-SMT-TR

SJ2-25974B-SMT-TR

CUI Devices

AUDIO JACK, 2.5 MM, RT, 4 CONDUC

1249

35HDRANAU

35HDRANAU

Switchcraft / Conxall

CONN PLUG STEREO 3.5MM RA 3COND

0

113BX

113BX

Switchcraft / Conxall

CONN JACK STEREO 6.35MM PNL MNT

1665

N114BX

N114BX

Switchcraft / Conxall

CONN JACK STEREO 6.35MM PNL MNT

203

RA49C12B

RA49C12B

Switchcraft / Conxall

CONN JACK STEREO 6.35MM R/A

757

TP-106

TP-106

NEXUS (Amphenol NEXUS Technologies)

TELEPHONE PLUG INLINE 6 CONDUCTO

77

SJ2-25934B1-SMT-TR

SJ2-25934B1-SMT-TR

CUI Devices

AUDIO JACK, 2.5 MM, RT, 4 CONDUC

1145

SJ1-3525NG-PI

SJ1-3525NG-PI

CUI Devices

CONN JACK STEREO 3.5MM R/A

1805

35HDRABAUS

35HDRABAUS

Switchcraft / Conxall

CONN PLUG STEREO 3.5MM RA 3COND

0

SJ-3571N

SJ-3571N

CUI Devices

CONN JACK STEREO 3.5MM R/A

849

938

938

Keystone Electronics Corp.

CONN RCA JACK MONO 3.2MM R/A

0

S250

S250

Switchcraft / Conxall

CONN PLUG MONO 5.23MM 2COND

27

780

780

Switchcraft / Conxall

CONN PLUG MONO 3.55MM 2COND

1173

SJ1-42514

SJ1-42514

CUI Devices

CONN JACK 4COND 2.5MM R/A

5359

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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