The TLP120‑4 is a miniature surface‑mount optocoupler that combines a photo‑transistor with two GaAs infrared emitting diodes in an inverse‑parallel configuration. It provides four isolated channels in a plastic DIP package, suitable for AC input operation.
The datasheet lists electrical ratings such as 80 V collector‑emitter voltage, 50 mA RMS forward current, and a 3750 V rms isolation voltage, along with temperature ranges and switching characteristics for reliable performance in industrial and consumer electronics.
| Collector‑Emitter Voltage (VCE) | 80 V (Min.) |
|---|---|
| Forward Current (RMS) | 50 mA |
| Storage Temperature Range | -55 °C to 125 °C |
| Operating Temperature Range | -55 °C to 160 °C |
| Current Transfer Ratio (CTR) | 50 % (Min.) |
The device is rated for a minimum collector‑emitter voltage of 80 V.