Toshiba TLP174GA User Guide
Summary
The TLP174GA is a high-performance optocoupler/photorelay from Toshiba, featuring an AlGaAs infrared LED coupled to a photo-MOSFET within a compact SOP package. Ideal for modern modem and telecommunication applications that demand space efficiency, it offers robust electrical isolation up to 1500 Vrms. This technical guide provides comprehensive details on the product’s performance curves, including switching times, operating parameters, and dedicated coupling characteristics. It is essential reading for electronics engineers and designers building precision measurement, PDX, or industrial control systems requiring reliable signal separation.
Page 1 Text Content
查询TLP174GA供应商
TLP174GA
TOSHIBA Photocoupler Photorelay
TLP174GA
Modem·Fax Cards, Modems in PC
Unit: mm
Telecommunications PBX Measurement Equipment
The Toshiba TLP174GA consists of an aluminum gallium arsenide infrared emitting diode optically coupled to a photo-MOSFET in a SOP, which is suitable for surface mount assembly. The TLP174GA is suitable for the modem applications which require space savings.
4-pin SOP (2.54SOP4): Height = 2.1 mm, Pitch = 2.54 mm 1-Form-A Peak Off-state voltage: 400 V (min) Trigger LED current: 3 m A (max) On-state current: 120 m A (max) Limit current: 150 m A~300 m A (t = 5 ms) On-state resistance: 35 Ω (max) Isolation voltage: 1500 Vrms (min)
JEDEC ― JEITA ―
Pin Configuration (top view)
TOSHIBA 11-5H1
Weight: 0.1 g (typ.)
1: Anode 2: Cathode 3: Drain 4: Drain
Page Summary Contents For Toshiba TLP174GA User Guide
Manual Details
| Brand | Toshiba |
|---|---|
| Pages | 6 |
| File Size | 127.32 KB |
| Published | May 31, 2026 |
Enter the captcha to get the download link:
Frequently Asked Questions
What is the minimum electrical isolation voltage for the TLP174GA?
The specified isolation voltage (BV) against AC for one minute at 60% R.H. is a minimum of 1500 Vrms.
How should I handle or dispose of this product due to materials used?
Caution: The device contains Gallium arsenide (GaAs), and its dust/fumes are toxic; do not break, cut, or dissolve it using chemicals.
What specialized applications is the TLP174GA designed for?
It is particularly suitable for modem applications that require maximizing space savings in design.
What physical package dimensions does the TLP174GA utilize?
The component comes in a 4-pin SOP (2.54SOP4) package, with a height of 2.1 mm and a pitch of 2.54 mm.
What is the maximum allowable load current limit for this module?
The device has a specified load current limiting range from 150 mA to 300 mA for a pulse time less than 5 ms.