3.5mm Female Audio Jack Socket 3/4 Pin Stereo Connector – 5 Pack

3.5mm Female Audio Jack Socket – 3-Pin & 4-Pin Stereo Connector with Nut (5 Pack)

Upgrade your audio projects with the HELTC PJ-392A 3.5mm Female Audio Jack Socket — a versatile, heavy-duty connector designed for makers, electronics hobbyists, repair technicians, and DIY audio enthusiasts. Available in both 3-pin (TRS) and 4-pin (TRRS) configurations, this compact socket delivers a reliable, secure connection for headphones, microphones, and other stereo audio devices.

Why Choose This Audio Jack Socket?

• Dual Pin Configuration: Available as 3-pin (stereo) or 4-pin (stereo + microphone) to suit a wide range of applications.
• Durable Metal + Plastic Construction: High-quality materials ensure long-lasting performance — resistant to bending, breaking, and deformation even with repeated use.
• Secure Nut Mounting: Includes a threaded nut for panel-mount installation, keeping the socket firmly in place in chassis, enclosures, and project boxes.
• Solder Termination: Clean solder-contact terminals for a solid, low-resistance electrical connection — ideal for custom wiring and circuit builds.
• Compact Form Factor: Measuring just 0.35 × 0.79 in (0.9 × 2.0 cm), this socket fits neatly into tight spaces without taking up valuable panel real estate.
• Low Voltage Rated: Operates safely at 24V, well within EU LVD low-voltage standards (below 50V AC / 75V DC).
• Value Pack: Each order includes 5 pieces, giving you plenty of spares for multiple projects or repairs.

Specifications

• Model: PJ-392A
• Connector Type: 3.5mm Female (Mono/Stereo/TRRS)
• Pin Options: 3-Pin (TRS) / 4-Pin (TRRS)
• Material: Metal + Plastic
• Color: Black
• Size: 0.35 × 0.79 in / 0.9 × 2.0 cm
• Contact Termination: Solder
• Operating Voltage: 24V
• Package Includes: 5 Pcs
• Country of Origin: Made in China

Common Applications

• DIY audio amplifier builds and speaker projects
• Headphone jack repair and replacement
• Custom audio interface panel mounting
• Arduino, Raspberry Pi, and other maker board audio I/O
• Guitar effects pedals and music equipment
• Electronics lab prototyping and breadboard extensions

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Authoritative Reference

For guidance on safe handling of low-voltage electronics components, visit the U.S. Consumer Product Safety Commission (CPSC) for consumer electronics safety standards.

Note: Due to differences in lighting and monitor settings, the actual color may vary slightly from product images. Please allow minor size tolerances due to manual measurement.

Frequently Asked Questions

Q: What is the difference between a 3-pin and 4-pin 3.5mm audio jack socket?

A: A 3-pin (TRS) socket supports stereo audio (left channel, right channel, and ground) — perfect for standard headphones and stereo audio output. A 4-pin (TRRS) socket adds a fourth contact for a microphone signal, making it ideal for headsets, smartphones, and communication devices that combine audio output and mic input in a single connector.

Q: How do I install this 3.5mm female jack socket onto a panel or enclosure?

A: Drill a hole in your panel or enclosure that matches the 3.5mm socket body diameter, insert the socket from the front, and secure it firmly using the included threaded nut on the rear side. Then solder your audio wires directly to the solder terminals for a reliable electrical connection.

Q: Are these 3.5mm audio jack sockets compatible with standard headphone plugs?

A: Yes. The PJ-392A accepts standard 3.5mm (1/8-inch) TRS and TRRS plugs, making them compatible with the vast majority of consumer headphones, earbuds, audio cables, and microphone jacks available on the market today.

Q: How many pieces are included in one order?

A: Each order includes 5 pieces of the 3.5mm female audio jack socket. You can choose between the 3-pin or 4-pin version depending on your project requirements.