The TLP126 is a miniature GaAs infrared emitting diode and photo‑transistor optocoupler designed for surface‑mount assembly. It offers high current transfer ratio (CTR) at low AC input current and meets UL1577 isolation standards.
The document lists maximum ratings, individual and coupled electrical characteristics, isolation and switching parameters, as well as handling precautions and restrictions on product use for reliable integration in electronic equipment.
| Collector‑emitter voltage (VCE) | 80 V (min) |
|---|---|
| Isolation voltage | 3750 Vrms (min) |
| Forward current (IF RMS) | 50 mA |
| Power dissipation (PD) | 150 mW |
| Current Transfer Ratio (CTR) | 100 % (min) |
| Input‑to‑output capacitance | 0.8 pF |
| Storage temperature range | -55 °C to 125 °C |
| Forward voltage (VF) | 1.0 V – 1.3 V |
The TLP126 is rated for a collector‑emitter voltage of at least 80 V.
It provides a minimum isolation voltage of 3750 Vrms.
The device has a minimum CTR of 100 % and can reach up to 1200 % under test conditions.