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TLP172GM(TPL,E

TLP172GM(TPL,E

Toshiba Semiconductor and Storage
Solid State Photo-Coupled Relay (Photorelay) SPST-NO (1 Form A) 6-SOP (0.179", 4.55mm), 4 Leads
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Overview

The TLP172GM is a high-voltage photorelay housed in a 4-pin SOP package, designed for high-speed switching applications that require electrical isolation. It functions as a solid-state replacement for mechanical relays, utilizing an infrared LED coupled with a MOSFET to switch loads up to 350V at 110mA.

Why Choose This Part

This device offers a high 350V load voltage rating and operates across an extended temperature range from -40 to 110 degrees Celsius. Its solid-state construction eliminates mechanical wear and contact bounce while maintaining a small 4-SOP footprint for space-constrained PCB designs.

Applications

PLC Output Modules
Provides isolated switching for industrial programmable logic controller outputs to drive small actuators or signaling lamps.
Measurement Instrumentation
Used in automated test equipment (ATE) for signal line switching where low leakage current and high reliability are required.
Security Systems
Ideal for alarm loops and sensor interfaces that require silent, spark-free operation and high-voltage standoff.
Modem Hook Switching
Manages line connection in telecommunications equipment with isolation requirements up to 350V.

Key Specifications

Circuit SPST-NO (1 Form A)
Relay Type Photo-Coupled Relay (Photorelay)
Output Type AC, DC
Load Current 110 mA
Mounting Type Surface Mount
Package / Case 6-SOP (0.179", 4.55mm), 4 Leads
Voltage - Load 0 V ~ 350 V
Approval Agency cUL, UL, VDE
Voltage - Input 1.27VDC
Termination Style Gull Wing
Operating Temperature -40degC ~ 110degC
Supplier Device Package 6-SO, 4 Lead
On-State Resistance (Max) 50 Ohms

Getting Started

To drive the input, provide a forward current (IF) to the internal LED, typically around 1.27V drop, ensuring the current is limited by an appropriate series resistor. On the output side, verify that the 110mA load current and 50 Ohm maximum on-resistance meet your switching efficiency requirements.

Also Consider

CPC1035NTR IXYS Integrated Circuits Division - Provides a 350V rating with significantly lower on-resistance for applications where power dissipation is a concern.