TLPN137

Product Overview

TLP137 is a Toshiba high-performance phototransistor output photocoupler designed for electrical isolation in industrial and communication interface applications. The device consists of a GaAs infrared LED optically coupled with a phototransistor output stage, providing high current transfer ratio, low input current operation and reliable signal isolation. TLP137 features an 80V collector-emitter voltage rating, 3750Vrms isolation voltage and a compact 5-pin MFSOP6 surface-mount package. It is widely used in programmable controllers, AC/DC input modules, telecommunications equipment and industrial control systems. 

Key Features

• Manufacturer: Toshiba Electronic Devices & Storage Corporation

• Part Number: TLP137

• Device Type: Photocoupler / Optocoupler

• Output Type: Phototransistor Output

• Input Type: GaAs Infrared LED

• Number of Channels: 1 Channel

• Collector-Emitter Voltage: 80V

• Collector Current: 50mA maximum

• Current Transfer Ratio (CTR): 50% to 1200%

• Isolation Voltage: 3750Vrms minimum

• Low Input Current Operation: Suitable for energy-efficient circuits

• Internal Base Connection: Improves switching performance

• High CTR Performance: Supports low drive current applications

• Safety Standard: UL1577 recognized

• Safety Standard: cUL approved

• Communication Interface Isolation: Supported

• Package Type: 5-pin MFSOP6

• Package Dimensions: 3.6mm × 7.0mm × 2.5mm

• Mounting Type: Surface Mount

• Operating Temperature: -55°C to +100°C

• Isolation Structure: Optical isolation between input and output

• Application: Signal isolation and voltage interface circuits

• Typical Applications: PLC systems, AC/DC input modules, telecom equipment and industrial controllers

• Lifecycle Status: EOL announced / legacy product

• Ordering / Packaging Note: Verify CTR rank, package type, marking, date code and manufacturer traceability before procurement.

Applications

TLP137 is designed for general-purpose electrical isolation where compact size and high reliability are required. Typical applications include programmable logic controllers (PLC), industrial automation systems, communication interfaces, AC/DC input modules, measurement equipment and legacy control boards. 

Quality & Sourcing

Antrex Electronics can support TLP137 sourcing with stock verification, RFQ quotation, manufacturer confirmation, package inspection, date code review and shipment arrangement. As a Toshiba legacy photocoupler, customers should confirm the complete part number, CTR classification and package specification before procurement.

Quality support can include marking inspection, visual inspection, electrical testing coordination and third-party verification when required. OEM manufacturers, industrial automation suppliers, repair centers and electronic component buyers are welcome to submit sourcing requests for TLP137 and other optocoupler components.