TLP197D is a photocoupler released by Toshiba. It has the characteristics of small size, high voltage and low current. It is widely used in various circuits.
This document describes the Toshiba TLP197D photorelay, an aluminum gallium arsenide infrared emitting diode optically coupled to a photo‑MOSFET in a compact SOP package. It lists the device's key electrical parameters, absolute maximum ratings, and recommended operating conditions for use in applications such as hook switches, dial‑pulse switches for modems, and PBX equipment.
The datasheet also includes isolation and switching characteristics, pin configuration, and safety restrictions. Designers are advised to follow the recommended operating ranges and consult Toshiba's reliability handbooks for robust designs.
| Peak OFF‑state voltage | 200 V (min) |
|---|---|
| ON‑state resistance | 8 Ω (max) |
| Isolation voltage | 1500 Vrms (min) |
| Forward current | 50 mA |
| ON‑state current | 200 mA (max) |
The device is rated for a peak OFF‑state voltage of 200 V (minimum).
The minimum isolation voltage is 1500 Vrms.