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TLP185GB

Photocoupler, phototransistor, CTR GB 100-200%, 3750Vrms, SOP4

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Manufacturer Part：

TLP185GB

Package：

MFSOP-4 (SOP4, 3.7 x 4.6 x 2.3 mm)

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TLP185(GB-TPLSE(T

Description

Product Overview

The TLP185GB is a photocoupler from Toshiba consisting of a GaAs infrared LED optically coupled to a phototransistor detector. With CTR rank GB (100-200% at IF=5mA), it provides high current transfer and 3750 Vrms isolation in a 4-pin MFSOP (SOP4) surface-mount package. The GB rank offers the highest CTR in the TLP185 family.

Key Specifications

Input (LED) GaAs infrared LED
Output Phototransistor
CTR Rank GB: 100-200% at IF=5 mA
Isolation Voltage 3750 Vrms (min)
Forward Current (IF) 50 mA max
Collector-Emitter Voltage (VCEO) 80V
Package MFSOP-4 (SOP4, 3.7 x 4.6 mm)
Operating Temperature -55C to +110C

Features

  • High CTR rank GB: 100-200% at 5 mA
  • Compact SOP4 surface-mount package
  • 3750 Vrms isolation voltage minimum
  • UL1577 and VDE 0884 approved
  • RoHS compliant

Applications

  • High-gain signal isolation
  • Power supply feedback control
  • Low-current drive optical switching
  • Industrial automation signal isolation

The TLP185GB is a high-CTR photocoupler from Toshiba with a GaAs infrared LED optically coupled to a phototransistor in a compact SOP4 package. The GB rank provides a current transfer ratio of 100-200% at IF=5 mA, making it the highest gain variant in the TLP185 family. This high CTR enables reliable switching with very low LED drive currents, reducing power consumption in battery-powered and energy-sensitive applications. The device maintains the same 3750 Vrms isolation voltage and safety approvals as the standard TLP185.

The TLP185GB operates identically to the standard TLP185 but with tighter CTR binning in the GB rank (100-200%). The infrared LED converts electrical current to light, which crosses the internal isolation barrier and generates base current in the phototransistor. The phototransistor amplifies this base current by its hFE to produce collector current. The high CTR of the GB rank means that for a 5 mA LED current, the collector current will be between 5 mA and 10 mA, enabling direct interfacing to low-power logic circuits without additional amplification stages.

Pin Name Type Function
1 Anode Input LED anode
2 Cathode Input LED cathode
3 Emitter Output Phototransistor emitter
4 Collector Output Phototransistor collector
  • High-gain signal isolation in battery-powered devices
  • Switch-mode power supply opto-isolated feedback
  • Low LED drive current optical switching
  • Industrial PLC I/O module signal isolation
  • Medical device patient isolation barriers
Manufacturer Part Number Package Notes
Toshiba TLP185(GB-TPLSE(T SOP4 Tape and reel ordering variant
Toshiba TLP185(YH-TPLSE(T SOP4 YH rank CTR 50-150%
Vishay SFH617A-4X007T SOP4 High CTR alternative
Everlight EL817S(C)(TU)-V SOP4 CTR rank C, cost-effective
Sharp PC817X2J000F DIP-4 Through-hole alternative, CTR 100-200%
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Quality Assurance

All electronic components we source from our partnered supply chains go through strict incoming inspections.Through careful testing, we ensure everything delivered to customers is genuine original parts and meets quality requirements.In addition, we keep complete inspection records to make the entire supply chain process clear and traceable.

Certification
We have obtained a number of professional certifications and built our own professional testing laboratory.This ensures that every product we deliver to our customers meets the highest quality requirements.We conduct tests in strict accordance with procedures to ensure stable product quality and accurate parameters.To guarantee genuine original parts, we also cooperate with reliable third-party testing institutions for strict quality inspection.We always attach great importance to quality and fully comply with industry standards, relevant regulations, and ISO 9001:2015 requirements.

Shipping & Payment

All electronic components we source from our partnered supply chains go through strict incoming inspections.Through careful testing, we ensure everything delivered to customers is genuine original parts and meets quality requirements.In addition, we keep complete inspection records to make the entire supply chain process clear and traceable.

Certification
We have obtained a number of professional certifications and built our own professional testing laboratory.This ensures that every product we deliver to our customers meets the highest quality requirements.We conduct tests in strict accordance with procedures to ensure stable product quality and accurate parameters.To guarantee genuine original parts, we also cooperate with reliable third-party testing institutions for strict quality inspection.We always attach great importance to quality and fully comply with industry standards, relevant regulations, and ISO 9001:2015 requirements.

Service & Packaging

All electronic components we source from our partnered supply chains go through strict incoming inspections.Through careful testing, we ensure everything delivered to customers is genuine original parts and meets quality requirements.In addition, we keep complete inspection records to make the entire supply chain process clear and traceable.

Certification
We have obtained a number of professional certifications and built our own professional testing laboratory.This ensures that every product we deliver to our customers meets the highest quality requirements.We conduct tests in strict accordance with procedures to ensure stable product quality and accurate parameters.To guarantee genuine original parts, we also cooperate with reliable third-party testing institutions for strict quality inspection.We always attach great importance to quality and fully comply with industry standards, relevant regulations, and ISO 9001:2015 requirements.

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