TLP781(D4-GR-FD,F)

Transistor, Photovoltaic Output Optoisolators Overview

The TLP781(D4-GR-FD,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 specifications include a collector-emitter voltage of 80V, an isolation voltage of 5000 Vrms, and a current transfer ratio (CTR) rank GR with a minimum value of 100%. The device supports a maximum forward current of 60mA and operates within a temperature range of -25°C to +85°C.

Transistor, Photovoltaic Output Optoisolators Feature Summary

• Provides high-voltage electrical isolation between input and output circuits using optical coupling technology.
• Features a standardized DIP-4 package configuration suitable for through-hole mounting applications.
• Ensures consistent signal transmission performance with a guaranteed minimum current transfer ratio.

Transistor, Photovoltaic Output Optoisolators Applications

• Solid state relays
• Switching power supplies
• Signal transmission between different voltage circuits

Transistor, Photovoltaic Output Optoisolators Procurement Notes

Verify the specific suffix FD against official Toshiba documentation to confirm exact packaging and tape-and-reel specifications. Ensure compliance with RoHS directives and check for any end-of-life or not-recommended-for-new-designations status before finalizing procurement plans.

Transistor, Photovoltaic Output Optoisolators Selection Notes

Select this component when a low-cost, general-purpose optocoupler with moderate speed and high isolation is required. The GR CTR ranking ensures higher gain compared to standard ranks, making it suitable for driving loads with lower input currents while maintaining reliable switching characteristics.

Transistor, Photovoltaic Output Optoisolators Part Context

This part belongs to the TLP781 series, which includes variants like TLP781F with different pin pitches. The D4 designation indicates a specific DIP-4 footprint. The series is widely used in industrial and consumer electronics for basic isolation tasks where high bandwidth is not critical.

Transistor, Photovoltaic Output Optoisolators Replacement Considerations

Direct substitutes may include other Toshiba TLP781 variants with matching CTR ranks or equivalent generic transistor-output optocouplers from manufacturers like Vishay or Broadcom, provided pinouts and isolation ratings are compatible.

Transistor, Photovoltaic Output Optoisolators FAQ

What does the 'GR' suffix indicate?

The 'GR' suffix denotes the Current Transfer Ratio (CTR) rank, specifying a minimum CTR of 100% at IF=5mA and VCE=5V.

Is this component lead-free?

Yes, the suffix LF in similar Toshiba designations typically indicates lead-free composition, consistent with RoHS standards.