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

STX-25427-6N-TR

STX-25427-6N-TR

Kycon

CONN JACK STEREO 2.5MM R/A SMT

6798

KLP42X-61-WW/RR

KLP42X-61-WW/RR

Kycon

STK RCA JACK 2X2 WHT WHT OVR RED

475

STX-3120-5B-577C

STX-3120-5B-577C

Kycon

STEREO JACK, ALL PLASTIC, LT GRE

2139

STX-2550-3NTR

STX-2550-3NTR

Kycon

STEREO JACK 2.5MM, SMT NON-THREA

1000

KLPX-0848-2-R

KLPX-0848-2-R

Kycon

RCA PHONO JACK, VERTICAL, RED RO

500

STX-35398A-5N-TR

STX-35398A-5N-TR

Kycon

MID MOUNT, 3.5MM STEREO JACK W/T

1000

STX-3120-3B-701C

STX-3120-3B-701C

Kycon

STEREO JACK, ALL PLASTIC, PINK,

2744

STX-3081-3N

STX-3081-3N

Kycon

STEREO JACK STRAIGHT NON-THREAD,

24

STX-3000

STX-3000

Kycon

CONN JACK STEREO 3.5MM SMD R/A

11752

STX-3790-5N

STX-3790-5N

Kycon

CONN JACK STEREO 3.5MM VERT

1850

STX-3150-5C-1

STX-3150-5C-1

Kycon

CONN JACK STEREO 3.5MM 5POS

500

KLPX-0848A-2-B

KLPX-0848A-2-B

Kycon

CONN RCA PHONO JACK R/A BLACK

2590

STX-P-5POLE

STX-P-5POLE

Kycon

CONN PLUG STEREO 5COND

1805

STX-3200-3NB

STX-3200-3NB

Kycon

CONN JACK STEREO 3.5MM PCB R/A

1121

KLPX-0848A-2-W

KLPX-0848A-2-W

Kycon

CONN RCA PHONO JACK R/A WHITE

1284

STX-4235-3/3-N

STX-4235-3/3-N

Kycon

CONN JACK STEREO 3.5MM VERT

389

STX-3100-5N

STX-3100-5N

Kycon

CONN JACK STEREO 3.5MM PCB R/A

500

STX-3200-5NB

STX-3200-5NB

Kycon

STEREO JACK NO THREAD SHIELD 5P,

4245

STX-3500-4NTR

STX-3500-4NTR

Kycon

CONN JACK STEREO 3.5MM SMD R/A

4957

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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