TLP126 is a photocoupler produced by Toshiba. Its main features are high current transfer ratio and high isolation voltage. It is suitable for programmable controllers, ac/dc input modules, telecommunications, etc.
The TLP126 is a small‑outline optocoupler designed for surface‑mount assembly. It combines a gallium‑arsenide infrared emitting diode with a phototransistor, providing high current transfer ratio while maintaining low input current. The device is UL1577 listed and intended for general electronics applications such as computers, office equipment, and industrial robotics.
Key electrical characteristics include a collector‑emitter voltage rating of 80 V, isolation voltage of 3750 Vrms, forward current rating of 50 mA RMS, CTR of at least 100 %, input‑output capacitance of 0.8 pF, and power dissipation up to 150 mW. The component operates from –55 °C to 100 °C and is supplied in a 0.09 g package.
| Collector‑emitter voltage (VCE) | 80 V (min) |
|---|---|
| Isolation voltage | 3750 Vrms (min) |
| Forward current (IF RMS) | 50 mA |
| Current transfer ratio (CTR) | ≥ 100 % |
| Power dissipation | 150 mW |
| Package weight | 0.09 g |
The device is rated for a minimum isolation voltage of 3750 Vrms.
The TLP126 provides a CTR of at least 100 % under specified conditions.
The recommended supply voltage (Voc) is between 5 V and 48 V.