TLP124 is a small outline coupler suitable for surface mount assembly. It consists of a photo transistor optically coupled to a gallium arsenide infrared emitting diode. It has features such as minimum collector-emitter voltage of 80V, minimum current transfer ratio of 100%, and minimum isolation voltage of 3750Vrms.
The TLP124 is a miniature GaAs infrared emitting diode coupled to a photo‑transistor, intended for surface‑mount assembly in office machines, programmable controllers, and telecom equipment. It offers a high isolation voltage and a current transfer ratio of at least 100%.
The sheet lists key specifications such as collector‑emitter voltage (80 V min), isolation voltage (3750 Vrms min), forward current (50 mA), power dissipation (150 mW), and recommended operating temperature range (‑25 °C to 75 °C). It also includes pin‑out details, switching times, and safety restrictions for proper use.
| Collector‑emitter voltage | 80 V min |
|---|---|
| Isolation voltage | 3750 Vrms min |
| Current transfer ratio | 100 % min |
| Forward current (IF) | 50 mA |
| Power dissipation (Po) | 150 mW |
| Weight | 0.09 g |
| Operating temperature range | -25 °C to 75 °C |
The device is rated for an isolation voltage of 3750 Vrms minimum.
The collector‑emitter voltage rating is 80 V minimum.
A typical forward current is 50 mA.
The recommended operating temperature range is –25 °C to 75 °C.