TLP781(Y-LF6,F)

Transistor, Photovoltaic Output Optoisolators Overview

The TLP781(Y-LF6,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 NPN phototransistor within a four-lead plastic DIP package. The device provides high isolation voltage of 5000 Vrms between input and output circuits. Key electrical parameters include a collector-emitter breakdown voltage of 80V, a maximum forward current of 25mA, and a typical current transfer ratio rank Y. Operating temperatures range from -25°C to 85°C.

Transistor, Photovoltaic Output Optoisolators Feature Summary

• Optical coupling via GaAs IRED and silicon NPN phototransistor for signal transmission
• High insulation voltage capability ensuring circuit safety
• Compact four-lead plastic DIP packaging for space-constrained designs

Transistor, Photovoltaic Output Optoisolators Applications

• Signal transmission between different voltage circuits
• Switching power supplies
• Various controllers
• Household appliances

Transistor, Photovoltaic Output Optoisolators Procurement Notes

Verify the specific suffix LF6 against official Toshiba documentation to confirm pin pitch and lead configuration details. Ensure the component meets required environmental standards such as RoHS compliance for the target application region. Cross-reference the exact part number with manufacturer datasheets to validate the current transfer ratio rank and operating temperature range specifications before procurement.

Transistor, Photovoltaic Output Optoisolators Selection Notes

Select this component when galvanic isolation is required between low-voltage control logic and higher-voltage loads. The 80V collector-emitter voltage rating suits general-purpose switching applications. Consider the thermal dissipation limits and current transfer ratio variations across the specified temperature range during circuit design to ensure reliable operation under all expected load conditions.

Transistor, Photovoltaic Output Optoisolators Part Context

This device belongs to the TLP781 series of photocouplers designed for general-purpose isolation tasks. The series utilizes a standard DIP4 form factor compatible with through-hole mounting technologies. It serves as a cost-effective solution for isolating microcontroller signals from power stages in consumer electronics and industrial control systems requiring moderate speed and high reliability.

Transistor, Photovoltaic Output Optoisolators Replacement Considerations

Direct substitutes may include other Toshiba TLP781 variants with different suffixes indicating package or ranking differences. Verify compatibility with alternative manufacturers' transistor output optocouplers by matching isolation voltage, CTR, and package dimensions.