TLP120 is a small outline coupler suitable for surface mount assembly. It consists of a photo transistor optically coupled to two gallium arsenide infrared emitting diode connected inverse parallel and can operate directly by AC input current.
The TLP120 is a small‑outline, surface‑mount optocoupler that combines a GaAs infrared emitting diode with a photo‑transistor. It is designed for use in general electronics applications such as computers, office equipment, and industrial robotics.
The document provides detailed electrical characteristics, maximum ratings, and recommended operating conditions, as well as safety and usage restrictions for the component.
| Collector‑emitter voltage (VCE) | 80 V (min.) |
|---|---|
| Current transfer ratio (CTR) | 50 % (min.) |
| Isolation voltage | 3750 Vrms (min.) |
| Forward current (IF RMS) | 50 mA |
| Junction temperature (Tj) | 125 °C |
| Weight | 0.09 g |
The isolation voltage is specified as 3750 Vrms minimum.
The maximum forward current (IF RMS) is 50 mA.
The recommended supply voltage is 5 V to 48 V.