TLP781F(Y-LF7,F)

Transistor, Photovoltaic Output Optoisolators Overview

The TLP781F(Y-LF7,F) is a single-channel transistor output optocoupler manufactured by Toshiba Semiconductor and Storage. It integrates a Gallium Arsenide infrared emitting diode with a silicon phototransistor within a four-lead plastic DIP package featuring a 10.16mm pin pitch. The device provides a minimum isolation voltage of 5000Vrms and supports a collector-emitter voltage of 80V. It operates within a temperature range of -25°C to 85°C, ensuring reliable signal transmission between circuits with different voltage potentials.

Transistor, Photovoltaic Output Optoisolators Feature Summary

• Optical coupling via GaAs IRED and silicon phototransistor for galvanic isolation
• High insulation voltage capability of 5000Vrms minimum
• Standardized 10.16mm pin pitch DIP4 package design

Transistor, Photovoltaic Output Optoisolators Applications

• Communication interface signal isolation
• AC main power supply voltage detection
• Solid state relay control circuits
• Switching power supply feedback loops
• Signal transmission between different voltage circuits

Transistor, Photovoltaic Output Optoisolators Procurement Notes

Verify the specific suffix Y-LF7 against official Toshiba documentation to confirm exact pin spacing and lead configuration. Ensure compliance with RoHS standards and check for UL or VDE safety certifications required for the target application. Confirm availability status as this series may be in last-time buy phases.

Transistor, Photovoltaic Output Optoisolators Selection Notes

Select this component when high isolation voltage is required alongside standard transistor output switching. The 10.16mm pitch distinguishes it from the 7.62mm TLP781 variant. Consider the 80V collector-emitter rating and operating temperature limits for circuit compatibility. Verify current transfer ratio requirements match the specific rank designation.

Transistor, Photovoltaic Output Optoisolators Part Context

This part belongs to the TLP781/TLP781F family of photocouplers produced by Toshiba. The 'F' designation typically indicates the 10.16mm pin pitch DIP4 package, distinguishing it from the standard 7.62mm version. The series is designed for general-purpose isolation in industrial and consumer electronics applications requiring robust electrical separation.

Transistor, Photovoltaic Output Optoisolators Replacement Considerations

TLP781F variants with different suffixes (e.g., D4GB, D4BL) offer identical core electrical characteristics but may differ in packaging or binning. Direct substitutes must maintain the 10.16mm DIP4 footprint and 5000Vrms isolation rating.