TLP137(F)

Overview

The TLP137(F) is a single-channel optocoupler manufactured by Toshiba Semiconductor and Storage, featuring an internal GaAs infrared LED coupled to a phototransistor with a base terminal. It utilizes a surface-mount MINI FLAT package compliant with SOP-6 dimensions, specifically the 6-MFSOP (5-lead) configuration. Key electrical parameters include a collector current rating of 50mA, a maximum forward voltage of 1.3V, and a typical rise/fall time of 8µs. The device supports a maximum current transmission ratio of 1200% and offers a high insulation voltage of 3750Vrms, certified under UL1577 standards. It operates within a temperature range of -55°C to 100°C.

Feature Summary

• Internal base terminal design integrated into the phototransistor to enhance switching speed and reduce dark current.
• High isolation capability with 3750Vrms insulation voltage suitable for demanding signal isolation applications.
• Compact surface-mount MINI FLAT packaging optimized for automated assembly and space-constrained designs.

Applications

• AC/DC input modules for power supply circuits
• Signal isolation in programmable controllers
• Communication interface circuits in telecommunications equipment
• Over-zero detection circuits in power electronics

Procurement Notes

Verify the specific suffix designation when ordering, as variants such as TLP137(TPL,F) and TLP137(TPR,F) exist with different availability statuses. Confirm that the required component matches the active production status rather than discontinued versions. Ensure the selected package variant aligns with the PCB footprint requirements for the 6-MFSOP configuration. Cross-reference the manufacturer's latest documentation to confirm RoHS compliance and current manufacturing status before finalizing procurement plans.

Selection Notes

Select this component for applications requiring moderate-speed signal isolation with a balance of low cost and reliable performance. The internal base terminal makes it suitable for circuits where faster switching times are necessary compared to standard phototransistors without bases. Consider the 50mA collector current limit when designing load circuits. The wide operating temperature range supports use in industrial environments. Verify that the 3750Vrms isolation rating meets the safety requirements of the target application.

Part Context

The TLP137 belongs to Toshiba's series of general-purpose optocouplers designed for signal transmission across isolated boundaries. It represents a standard solution for galvanic isolation in digital and analog control systems. The family includes various package options and suffixes tailored for different production timelines and specific electrical characteristics. This particular model focuses on providing robust isolation in a compact surface-mount form factor.

Replacement Considerations

Publicly confirmed substitute part numbers for the TLP137(F) are not available in the provided reference data. Users should consult official distributor databases or manufacturer cross-reference tools to identify compatible alternatives based on pinout and electrical specifications.