TLP781(D4-BL,F)

Transistor, Photovoltaic Output Optoisolators Overview

The TLP781(D4-BL,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 in a four-lead plastic DIP package. Key electrical parameters include a collector-emitter breakdown voltage of 80V minimum, an isolation voltage of 5000Vrms minimum, and a current transfer ratio rank BL specified at 50% to 600%. The device supports a maximum forward current of 25mA and features typical rise and fall times of 2μs and 3μs respectively.

Transistor, Photovoltaic Output Optoisolators Feature Summary

• Provides high-voltage electrical isolation between input and output circuits using optical coupling technology.
• Features a standard four-lead plastic DIP package suitable for through-hole mounting applications.
• Delivers reliable signal transmission across different voltage domains with low power consumption.

Transistor, Photovoltaic Output Optoisolators Applications

• Office equipment control interfaces
• Household appliance switching circuits
• Solid state relay driver stages
• Switching power supply feedback loops

Transistor, Photovoltaic Output Optoisolators Procurement Notes

Verify the specific suffix designation against official Toshiba documentation to confirm package pitch and tape/reel specifications. Ensure compliance with RoHS directives and regional safety certifications such as UL, CSA, or VDE are required for the target application environment before finalizing procurement orders.

Transistor, Photovoltaic Output Optoisolators Selection Notes

Select this component when designing circuits requiring galvanic isolation for low-speed digital signal transmission. Consider the 80V collector-emitter voltage rating and the specific CTR range for logic level compatibility. Evaluate thermal dissipation requirements within the DIP-4 package constraints for continuous operation scenarios.

Transistor, Photovoltaic Output Optoisolators Part Context

This part belongs to the TLP781 series of transistor output optocouplers. It is distinct from surface mount variants like the TLP781F or higher-bandwidth models such as the TLP7820. The series is designed for general-purpose isolation in consumer and industrial electronics where moderate speed and high isolation voltage are prioritized over rapid switching performance.

Transistor, Photovoltaic Output Optoisolators Replacement Considerations

Public confirmed substitute part numbers are not available in the provided source material. Cross-reference with other Toshiba TLP781 variants only if pinout and electrical characteristics match exactly.