TLP187 – Optocoupler – Toshiba

The Toshiba TLP187 is a high-gain, DC-input photo-Darlington transistor-output photocoupler in a compact 4-pin SO6 package, rated 3750 Vrms isolation and 300 V collector-emitter voltage. Available for RFQ at Pacific Component Xchange.

The Toshiba TLP187 is a DC-input, transistor-output photocoupler that pairs an infrared LED with a high-gain photo-Darlington transistor output stage inside a compact 4-pin SO6 surface-mount package. With a minimum current transfer ratio (CTR) of 1000% and a collector-emitter voltage rating of 300 V, the TLP187 is well suited to driving higher-voltage output stages such as 100 VDC output modules while keeping LED drive current low. A guaranteed 3750 Vrms isolation voltage and recognition under UL 1577, cUL, EN 60747-5-5 (VDE), EN IEC 62368-1 (VDE) and GB 4943.1-2022 (CQC) make it a robust choice for safety-isolated industrial designs.

Key Features

• DC-input infrared LED, photo-Darlington transistor output (single channel)
• Current transfer ratio (CTR): 1000% minimum (IF = 1 mA, VCE = 1 V)
• Collector-emitter voltage VCEO: 300 V
• Isolation voltage (BVS): 3750 Vrms minimum
• Operating temperature range: -55°C to +110°C
• Compact 4-pin SO6 surface-mount package
• Safety standards: UL 1577, cUL, EN 60747-5-5 (VDE), EN IEC 62368-1 (VDE), GB 4943.1-2022 (CQC)

Applications

• Programmable Logic Controllers (PLCs)
• I/O interface boards
• 100 VDC output modules
• Home electric appliances
• General signal isolation in industrial equipment

Why Source TLP187 from Pacific Component Xchange

The TLP187 can be a challenging line item for production buyers when authorized-distributor availability tightens. Pacific Component Xchange is an independent distributor specializing in hard-to-find and allocated power-management ICs and optocouplers. We help engineering and procurement teams secure genuine Toshiba TLP187 photocouplers when standard channels are dry, with authenticity verification, careful handling of moisture-sensitive surface-mount parts, and worldwide shipping. Whether you need a small bridge quantity or full-reel volume, our sourcing specialists can locate stock and lock pricing fast. Request a quote (RFQ) for the TLP187 today and let our team handle obsolete, EOL, and supply-constrained sourcing on your behalf.