# CK6.35-645-4P Audio Jack Stereo Socket for Industrial Automation

Date: 2026-05-05
Categories: 6.35mm Phone Jack Series
URL: https://cenyutech.com/ck6-35-645-4p-audio-jack-stereo-socket.html

## Product Summary

The CK6.35-645-4P is a 1/4 inch stereo audio jack socket engineered for industrial audio connection and automation equipment integration. With a 4-pin configuration and standard 6.35mm interface, it is well suited for PCB-mounted applications that require secure signal transfer, dependable board retention, and long-term operating durability.

This model is commonly used in headphone interfaces, audio mixers, control panels, signal distribution units, and embedded industrial devices where stable stereo transmission is essential. Its compact form supports efficient assembly in professional audio hardware, automation control systems, and equipment requiring a robust female headphone jack socket.

For buyers targeting industrial and OEM supply chains, this stereo socket offers a practical solution for audio input/output modules, panel audio connection, and PCB audio interface design. It fits well in projects needing an industrial 6.35mm stereo jack, PCB mount audio socket, or automation audio connector with reliable integration performance.

OEM/ODM customization is available for project-based sourcing and volume production.

### Specification Table:

PRODUCT NAME
1/4 Inch Female Headphone Jack Socket

MODEL
CK6.35-645-4P

PIN
4 PIN

RATED LOAD
30V DC 1.0A

CONTACT RESISTANCE
≤ 0.030

WITHSTAND VOLTAGE
500V, AC/min

TEMPERATURE
-30℃~+70℃

LIFE
5000 time

TERMINAL STRENGTH
5N ~ 30N

Color
Black

![6.35mm 4 pin headphone jack PCB mount socket](https://cenyutech.com/wp-content/uploads/2026/04/20260404145356266941.webp)

### 3 Pin vs 4 Pin vs 5 Pin vs 6 Pin vs 7 Pin Audio Jack difference:

**Type**
**Function**
**Application**

3 Pin
Mono/basic
Guitar / PCB audio

4 Pin
Stereo
Headphone / Mixer

5 Pin
Signal switching
Advanced audio

6 Pin
Stereo + switching
Professional audio

7 Pin
Complex control
High-end systems

### Key Features:

- 4-pin design for stable audio connection

- Standard 6.35mm interface

- PCB mount, secure installation

- Low contact resistance

- Durable and long lifespan

### Applications:

- Amplifiers

- Audio mixers

- Headphone systems

- AV equipment

- Musical instruments

Widely used in audio devices and PCB-based systems requiring stable signal transmission.

### Why Choose Our Audio Connector:

- Professional connector manufacturer

- OEM / ODM customization

- Strict quality control

- Fast delivery

- Competitive factory pricing

- 6.35mm 4 pin [audio jack](https://cenyutech.com/tag/audio-jack) PCB mount supplier

- 1/4 inch headphone jack connector manufacturer

- audio jack connector factory China

- 4 pin audio jack for amplifier

- buy 6.35mm audio jack in bulk

### FAQ

**Q1: What is a 6.35mm 4 pin headphone jack?**It is an [audio connector](https://cenyutech.com/tag/audio-connector) used for stable signal transmission, often applied in amplifiers and audio equipment.

**Q2: What is a 4 pin audio jack used for?**It is mainly used for basic audio signal transmission and simple switching functions in electronic devices.

**Q3: What is the difference between 3 pin and 4 pin jack?**3 pin is for basic mono audio, while 4 pin adds additional contacts for improved connectivity or switching.

**Q4: Is 6.35mm the same as 1/4 inch?**Yes, 6.35mm equals 1/4 inch and is widely used in professional audio systems.

**Q5: Can this jack be used in amplifiers?**Yes, it is commonly used in amplifier and audio input circuits.

![6.35mm 4 pin headphone jack PCB mount socket](https://cenyutech.com/wp-content/uploads/2026/04/20260404145412816628.webp)

![6.35mm 4 pin headphone jack PCB mount socket](https://cenyutech.com/wp-content/uploads/2026/04/20260404145413439201.webp)