The TLP121 is a miniature surface‑mount optocoupler that combines a gallium‑arsenide infrared emitting diode with a phototransistor. It is intended for general electronics applications such as computers, office equipment, and industrial robotics.
The document lists maximum ratings, individual and coupled electrical characteristics, isolation and switching parameters, and restrictions on product use. It also includes recommended operating conditions and safety notes for handling the GaAs device.
| Collector‑Emitter Voltage (VCEO) | 80 V (Min.) |
|---|---|
| Isolation Voltage | 3750 Vrms (Min.) |
| Forward Current (Ip) | 50 mA |
| Supply Voltage (Vac) | 5 V – 48 V |
| Storage Temperature Range | -55 °C to 125 °C |
The collector‑emitter voltage rating is 80 V (minimum).
The isolation voltage is rated at 3750 Vrms (minimum).
The recommended supply voltage is between 5 V and 48 V.