TLP781(D4-YH,F)

Transistor, Photovoltaic Output Optoisolators Overview

The TLP781(D4-YH,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 photo-transistor within a four-lead plastic DIP package featuring a 7.62mm pitch. 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, a typical current transfer ratio rank of YH, and an operating temperature range from -25°C to 85°C.

Transistor, Photovoltaic Output Optoisolators Feature Summary

• Optical coupling via GaAs IRED and silicon phototransistor for signal transmission
• High insulation voltage capability ensuring circuit safety
• Standardized CTR ranking for predictable gain performance
• Lead-free compliant construction

Transistor, Photovoltaic Output Optoisolators Applications

• Office equipment control interfaces
• Household appliance switching circuits
• 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 Current Transfer Ratio (CTR) suffix 'YH' against the official Toshiba datasheet to confirm the exact gain bin. Ensure the ordering code matches the required DIP-4 package variant. Confirm RoHS compliance status and lead-free specifications directly with the manufacturer or authorized distributors prior to procurement.

Transistor, Photovoltaic Output Optoisolators Selection Notes

Select this component when a standard NPN phototransistor output is required for general-purpose isolation. Consider the 80V collector-emitter voltage limit for load compatibility. Verify that the thermal operating range meets the application environment requirements. Compare the specific CTR rank against system design margins to ensure adequate drive capability.

Transistor, Photovoltaic Output Optoisolators Part Context

This part belongs to the TLP781 series of transistor output photocouplers. Variants are distinguished by package type and CTR ranking. The D4 designation indicates the specific DIP-4 footprint dimensions. This series is designed for general industrial and consumer electronics applications requiring basic isolation.

Transistor, Photovoltaic Output Optoisolators Replacement Considerations

Compatible substitutes include other Toshiba TLP781 variants with matching CTR ranks and package styles. Cross-manufacturer replacements require verification of pinout compatibility, isolation voltage ratings, and CTR characteristics.