optoisolators

TLP172

Full part number: TLP172GM

Key datasheet specifications and the closest alternatives, ranked by parametric similarity and grounded in the manufacturer datasheet.

01 — Overview

This Toshiba datasheet covers the TLP172GM, a photorelay optocoupler in a 4-pin SO6 package. It is designed for applications like battery management systems, factory automation, and as a mechanical relay replacement, offering space savings. Key parameters include an isolation voltage of 3750 Vrms, OFF-state output terminal voltage of 350 V min, trigger LED current max of 3 mA, ON-state current max of 110 mA, and ON-state resistance max of 50 ohms continuous. The device features halogen-free packaging and meets UL, cUL, and VDE safety standards with an operating temperature range up to 110 degrees Celsius.

02 — Key specifications

Datasheet parameters

ParameterMinTypMaxConditions
supply voltage range 280 V Supply voltage
rds on 1.01 kOhm VS = 500 V, R.H. ≤ 60 %
reverse leakage current 10 µA VR = 5 V
input capacitance 30 pF V = 0 V, f = 1 MHz
output capacitance 30 pF V = 0 V, f = 1 MHz
isolation voltage 10 kV AC, 1 s in oil
03 — Alternatives

Closest matches to TLP172

TLP185GB 2.0× lower reverse leakage current, similar input capacitance, similar isolation voltage
4N35 2.0× lower isolation voltage, similar rds on
PC817 2.0× lower isolation voltage, 2.0× lower reverse leakage current
TLP7820 2.0× lower isolation voltage
MOC3063S 2.0× lower isolation voltage
TCUT1350X01 similar reverse leakage current
MOC3010M 2.4× lower isolation voltage
LTV-217-G 2.7× lower isolation voltage
04 — FAQ

Frequently asked questions

What is the input capacitance of the TLP172GM?

The input capacitance is 30 pF at V = 0 V and f = 1 MHz.

What is the isolation voltage of the TLP172GM?

The isolation voltage is 10 kV AC, 1 s in oil.

What is the output capacitance of the TLP172GM?

The output capacitance is 30 pF at V = 0 V and f = 1 MHz.

What is the rds on value when VS = 500 V and R.H. ≤ 60 %?

The rds on value is 1.01 kOhm when VS = 500 V and R.H. ≤ 60 %.

What is the reverse leakage current when VR = 5 V?

The reverse leakage current is 10 µA when VR = 5 V.

What is the supply voltage range for the TLP172GM?

The supply voltage range is 280 V under the Supply voltage condition.

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