TLP781F(GR-LF7,F)

Transistor, Photovoltaic Output Optoisolators Overview

The TLP781F(GR-LF7,F) is a single-channel transistor output optocoupler from Toshiba, featuring a gallium arsenide infrared LED coupled to a silicon phototransistor. It utilizes a DIP-4 plastic package with a 10.16mm pin pitch. Key electrical parameters include a collector-emitter breakdown voltage of 80V minimum and an isolation voltage of 5000Vrms minimum. The current transfer ratio (CTR) for the GR rank is specified at 100% minimum. Operating characteristics include a typical rise time of 2μs and fall time of 3μs, with a maximum forward current of 60mA and a forward voltage of 1.3V.

Transistor, Photovoltaic Output Optoisolators Feature Summary

• High isolation voltage capability of 5000Vrms between input and output circuits
• Optical coupling structure using gallium arsenide infrared LED and silicon phototransistor
• DIP-4 package configuration with 10.16mm pin spacing for through-hole mounting

Transistor, Photovoltaic Output Optoisolators Applications

• Communication interface signal transmission
• Power supply management circuits
• AC main power voltage detection systems
• Solid state relay control applications
• Signal transmission between different voltage circuits

Transistor, Photovoltaic Output Optoisolators Procurement Notes

Verify that the specific suffix LF7 corresponds to the required surface mount or leaded configuration as defined in the official datasheet. Confirm the GR ranking aligns with the necessary current transfer ratio specifications for the target application. Ensure compliance with RoHS standards and relevant safety certifications such as UL and VDE before integration into final products.

Transistor, Photovoltaic Output Optoisolators Selection Notes

Select this component when high isolation voltage and reliable DC signal transmission are required. The 10.16mm pitch makes it suitable for standard DIP footprints requiring wider creepage distances. Consider the CTR range and switching speed characteristics against circuit requirements. Verify thermal limits and operating temperature range compatibility with the intended environment.

Transistor, Photovoltaic Output Optoisolators Part Context

This device belongs to the TLP781 series of photocouplers designed for general-purpose isolation applications. The TLP781F variant specifically denotes the 10.16mm pitch DIP-4 package, distinguishing it from the standard 7.62mm pitch version. The series is engineered for robust performance in industrial and consumer electronics where galvanic isolation is critical for safety and noise immunity.

Transistor, Photovoltaic Output Optoisolators Replacement Considerations

Direct substitutes within the same family include TLP781F(D4GRL-F7,F) and TLP781F(D4-BL,F), which share the 10.16mm pitch specification. Cross-series replacements require verification of pinout compatibility, isolation voltage ratings, and current transfer ratio rankings to ensure functional equivalence without circuit redesign.