The TCDT1100(G) series is a photo-transistor optocoupler with a gallium arsenide infrared-emitting diode. It has a fixed distance between input and output and is suitable for circuits requiring high safety requirements for electrical shock protection.
The TCDT1100(G) series optocouplers from Vishay Telefunken combine a gallium‑arsenide infrared LED with a phototransistor in a 6‑lead DIP package. They are designed for reinforced isolation in safety‑critical applications such as switch‑mode power supplies and computer interfaces, meeting VDE 0884 and IEC safety standards.
Key specifications include a typical forward voltage of 1.25‑1.6 V at 50 mA, a current transfer ratio (CTR) ranging from 0.40 to 2.00 depending on the variant, and a rated impulse voltage of 6 kV. The devices operate over a wide temperature range (‑55 °C to +125 °C) and feature low coupling capacitance (≈0.2 pF) for high common‑mode rejection.
| Current Transfer Ratio (CTR) – TCDT1100(G) | 0.40 |
|---|---|
| Rated impulse voltage | 6 kV peak |
The series is rated for an impulse voltage of 6 kV peak.
The TCDT1102(G) variant has a CTR range of 0.63 to 1.25.