TLP523, TLP523−2, TLP523−4 are programmable controller DC-output module solid state relays. They consist of a gallium arsenide infrared emitting diode coupled with a silicon, darlington connected, phototransistor. The product features optimized switching speed and elevated temperature characteristics, and provides multiple isolated channels.
The Toshiba TLP523 series (TLP523, TLP523-2, TLP523-4) are gallium‑arsenide infrared LED devices optically coupled to a silicon Darlington phototransistor with an integral base‑emitter resistor. The devices provide isolated channels (two for TLP523‑2, four for TLP523‑4) in a plastic DIP package and are intended for general electronics applications.
Key specifications include a minimum isolation voltage of 2500 Vrms, a current transfer ratio of at least 500 %, a collector‑emitter voltage rating of 55 V, and very low leakage current (10 pA max). The parts operate from –55 °C to 100 °C (absolute) with recommended operating ranges of –25 °C to 85 °C and supply voltages from 5 V to 24 V.
| Isolation voltage (min) | 2500 Vrms |
|---|---|
| Current transfer ratio (min) | 500 % |
| Collector‑emitter voltage (min) | 55 V |
| Leakage current (max) | 10 pA |
| Forward voltage (typical, IF=10 mA) | 1.15 V |
| Operating temperature range (absolute) | -55 °C to 100 °C |
| Supply voltage range (recommended) | 5 V to 24 V |
The device is rated for a minimum isolation voltage of 2500 Vrms.
A supply voltage between 5 V and 24 V is recommended.
Typical forward voltage is about 1.15 V at a forward current of 10 mA.
The maximum collector current is 150 mA.