TLP197G is a small flat photo relay from TOSHIBA. It is suitable for surface mount assembly. The product consists of a gallium arsenide infrared emitting diode optically coupled to a photo-MOS FET in a six lead 2.1mm height package, which enables TLP197G to be applied in card modems. The TLP197G is a bi-directional switch which can replace mechanical relays in fax machines and modems etc.
The TLP197G is a miniature flat‑pack photo‑relay that combines a GaAs infrared LED with a photo‑MOSFET in a six‑lead, 2.1 mm high package. It is intended for surface‑mount use in fax machines, modems, and other equipment where a bi‑directional switch can replace a mechanical relay.
The document lists absolute maximum ratings, recommended operating conditions, and detailed electrical characteristics such as forward voltage, on‑state resistance, isolation voltage, and switching times, together with handling and safety notes for reliable design.
| Peak off‑state voltage | 350 V (min) |
|---|---|
| On‑state current (A connection) | 120 mA (max) |
| On‑state resistance | 35 Ω (max) |
| Isolation voltage | 1500 Vrms (min) |
| Weight | 0.13 g |
| Forward voltage (IF=10 mA) | 1.15 V (typ) |
| Reverse current (Vp=5 V) | 10 pA (max) |
| Input‑to‑output capacitance | 30 pF (typ) |
The device is rated for a peak off‑state voltage of 350 V (minimum).
The recommended VOFF is typically 280 V.
It provides an isolation voltage of 1500 Vrms for at least one minute.
The device weighs approximately 0.13 g.