This document is about the absolute maximum ratings of SFH6943, including the emitter (GaAlAs) reverse voltage, forward current, peak forward current, total power dissipation, detector (Si phototransistor) collector-emitter voltage, emitter-collector voltage, collector current, peak collector current, total power dissipation, package insulation, creepage distance and other parameters.
The SF6943 is a four‑channel mini‑optocoupler offered in a SOT223/10 package. It features low‑current input, high isolation voltage (1768 V RMS), and a typical current transfer ratio of up to 250 % at 0.5 mA.
The document lists absolute maximum ratings, electrical characteristics such as forward voltage, reverse voltage, leakage currents, and switching times, as well as typical application areas like telecommunications, SMT, and instrumentation.
| Emitter Forward Voltage (typ) | 1.25 V |
|---|---|
| Emitter Reverse Voltage | 3 V |
| Maximum Forward Current | 5 mA |
| Isolation Test Voltage | 1768 V RMS |
| Collector‑Emitter Voltage | 70 V |
| Package Coupling Capacitance | 1 pF |
| Thermal Resistance (Emitter) | 1000 K/W |
The device is rated for 1768 V RMS isolation between emitter and detector.
The typical forward voltage is 1.25 V.
The collector‑emitter voltage rating is 70 V.