Product Description: PJ-344 3.5mm TRS Audio Jack – Vertical, Snap-In Panel Mount
The PJ-344 is a high-performance, 3.5mm (1/8″) TRS (Tip-Ring-Sleeve) audio jack engineered for reliable through-hole mounting in professional audio and electronic applications. Designed with a vertical, snap-in panel mount configuration, this connector simplifies assembly while ensuring a secure and lasting mechanical fit into chassis or enclosures. It is a 3-pole (TRS) connector, making it ideal for stereo audio signals, balanced microphone inputs, or other configurations requiring left/right and ground channels.
Electrical and Mechanical Specifications
Rated at DC30V 0.5A, the PJ-344 provides robust signal integrity for low-voltage audio circuits. The vertical orientation allows for space-efficient PCB layouts, while the snap-in panel mount feature eliminates the need for additional hardware, reducing both assembly time and component costs. Its compact footprint and durable housing ensure consistent performance across thousands of mating cycles.
Four Flexible Switch Configurations
To accommodate diverse circuit design needs, we offer the PJ-344 in four distinct switching options:

• Option 1 (Full Detection): Equipped with two internal normally closed (N.C.) switches – one on the tip contact and one on the ring contact. Ideal for advanced routing, such as detecting plug insertion or rerouting internal speakers separately for left/right channels.
• Option 2 (Ring Detection Only): Features a single N.C. ring switch. Suitable for applications where only the ring connection (e.g., right audio channel or microphone bias) requires switching or detection.
• Option 3 (Tip Detection Only): Features a single N.C. tip switch. Perfect for basic mono detection or switching the left/main audio channel upon plug insertion.
• Option 4 (No Switches): A straight-through, non-switched version for applications requiring only passive connectivity without insertion detection or signal rerouting.

Direct Alternative to Panasonic K2HC1YYA0002
The PJ-344 shares identical dimensions, pinouts, and electrical specifications with the Panasonic phone connector K2HC1YYA0002. This makes the PJ-344 an excellent, cost-effective alternative for those seeking a drop-in replacement without redesigning PCBs or requalifying mechanical tolerances. Whether for mixing consoles, communication equipment, or portable audio devices, the PJ-344 delivers reliability and design flexibility.