This is a 3.5mm stereo headphone jack, brand is lumberg, model is KLK 44
The KLK 44 is a 3‑pole (stereo) 3.5 mm jack connector that complies with JISC 6560. It is a straight‑type connector with a metal housing, kink protection and solder terminals.
Key specifications include a temperature range of –20 °C to +70 °C, body made of PPO, contacts of CuSn (nickel‑plated or gold‑plated), steel housing (nickel‑plated), insertion force of 4‑20 N, withdrawal force of 2‑15 N, 5000 mating cycles, contact resistance of 30 mΩ, rated current 1 A, rated voltage 34 V AC, test voltage 500 V and insulation resistance of 10 MΩ.
| Temperature range | -20 °C to +70 °C |
|---|---|
| Contact material (nickel‑plated) | CuSn, nickeled |
| Contact material (gold‑plated) | CuSn, gilded |
| Housing material | steel nickeled |
| Rated voltage | 34 V AC |
| Test voltage | 500 V |
| Designation | KLK 44 3 100 |
It operates from –20 °C to +70 °C.