TLP781(D4-GRH,E)

Transistor, Photovoltaic Output Optoisolators Overview

The TLP781(D4-GRH,E) 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 in a four-lead plastic DIP package. The device features a minimum collector-emitter breakdown voltage of 80V and a high isolation voltage of 5000 Vrms. The GRH rank specifies a minimum current transfer ratio of 200% at a forward current of 5mA, ensuring reliable signal transmission across different voltage circuits.

Transistor, Photovoltaic Output Optoisolators Feature Summary

• High isolation voltage capability for safe signal transmission between isolated circuits
• Optimized current transfer ratio for efficient switching performance
• Compact four-lead plastic DIP packaging for space-constrained designs

Transistor, Photovoltaic Output Optoisolators Applications

• Signal transmission between different voltage circuits
• Solid state relays
• Switching power supplies
• Various controllers

Transistor, Photovoltaic Output Optoisolators Procurement Notes

Verify the specific suffix (D4-GRH,E) to confirm the exact current transfer ratio ranking and lead pitch configuration. Ensure compatibility with existing DIP footprints and thermal management requirements. Confirm RoHS compliance status through official Toshiba documentation before finalizing procurement specifications.

Transistor, Photovoltaic Output Optoisolators Selection Notes

Select this component when a high current transfer ratio is required for low input drive currents. The 80V collector-emitter voltage rating suits general-purpose switching applications. Verify that the DIP-4 package dimensions align with the target PCB layout constraints and assembly processes.

Transistor, Photovoltaic Output Optoisolators Part Context

This part belongs to the TLP781 series, which utilizes a GaAs IRED and silicon phototransistor architecture. The series is designed for general-purpose isolation tasks. The D4 designation indicates a specific lead pitch variant within the DIP family, distinguishing it from other pitch options like the standard or wide configurations.

Transistor, Photovoltaic Output Optoisolators Replacement Considerations

Direct substitutes include other TLP781 variants with matching CTR rankings and isolation ratings. Verify pinout compatibility and package dimensions before substitution. Cross-reference electrical parameters such as Vceo and Isolation Voltage to ensure equivalent performance in the target circuit.