TLP781(D4-Y,F)

Transistor, Photovoltaic Output Optoisolators Overview

The TLP781(D4-Y,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, housed in a compact four-lead plastic DIP package. The device provides high isolation voltage of 5000 Vrms minimum between input and output circuits. Key electrical parameters include a collector-emitter breakdown voltage of 80V minimum and a nominal current transfer ratio of 100%. The component supports DC input signals and features a typical rise time of 2 microseconds and fall time of 3 microseconds, suitable for general signal transmission applications.

Transistor, Photovoltaic Output Optoisolators Feature Summary

• Integrates GaAs IRED and silicon phototransistor for reliable optical coupling
• Provides high insulation voltage capability for circuit isolation
• Offers fast switching performance with low propagation delay times
• Available in standard DIP-4 package for through-hole mounting

Transistor, Photovoltaic Output Optoisolators Applications

• Office equipment control circuits
• Household appliance interface modules
• Solid state relay driver stages
• Switching power supply feedback loops
• Signal transmission between different voltage domains

Transistor, Photovoltaic Output Optoisolators Procurement Notes

Verify the specific suffix 'D4-Y' against official Toshiba documentation to confirm pin pitch and lead configuration details. Ensure compliance with RoHS directives if required by your manufacturing standards. Cross-reference the datasheet revision date to validate parameter accuracy before finalizing procurement specifications.

Transistor, Photovoltaic Output Optoisolators Selection Notes

Select this component when high isolation voltage and moderate speed are required for single-channel signal transfer. The 100% CTR rank ensures sufficient gain for direct transistor driving in many logic interfaces. Consider thermal dissipation limits and ambient operating temperature ranges during circuit design integration.

Transistor, Photovoltaic Output Optoisolators Part Context

This part belongs to the TLP781 series of photocouplers designed for general-purpose isolation tasks. The series utilizes advanced semiconductor processes to achieve stable current transfer characteristics over wide temperature ranges. It serves as a cost-effective solution for isolating microcontroller outputs from higher voltage loads or noisy environments.

Transistor, Photovoltaic Output Optoisolators Replacement Considerations

Compatible substitutes within the same family include TLP781 variants with different CTR ranks such as TLP781(GB,F) or TLP781(F). Verify that alternative parts maintain identical DIP-4 packaging dimensions and pinout configurations to ensure mechanical compatibility without PCB redesign.