TLP748J(D4,F)

Triac, SCR Output Optoisolators Overview

The TLP748J(D4,F) is a single-channel triac and SCR output optocoupler manufactured by Toshiba Semiconductor and Storage. It integrates a gallium arsenide infrared emitting diode with a photo-thyristor in a six-lead plastic DIP package. Key electrical specifications include an isolation voltage of 4000 Vrms, a peak off-state voltage (VDRM) of 600 V, and a maximum continuous output current of 150 mA. The device operates with a forward current of 10 mA and a forward voltage of 1.15 V. It lacks a zero-crossing circuit and functions within a temperature range of -25°C to +85°C.

Triac, SCR Output Optoisolators Feature Summary

• Integrates a gallium arsenide infrared LED with a photo-thyristor for optical isolation
• Provides high insulation capability with 4000 Vrms isolation voltage rating
• Supports direct triggering of thyristors and triacs without zero-crossing detection
• Designed for through-hole mounting in standard six-lead DIP packages

Triac, SCR Output Optoisolators Applications

• Factory automation control systems
• Home appliance motor and heater control circuits
• Industrial power switching interfaces
• Solid state relay driver stages

Triac, SCR Output Optoisolators Procurement Notes

Verify component authenticity due to end-of-life status. Confirm datasheet revisions match design requirements. Check RoHS compliance documentation. Validate pinout compatibility with existing PCB footprints. Review supply chain restrictions for discontinued series items.

Triac, SCR Output Optoisolators Selection Notes

Choose this component when high voltage isolation and direct thyristor triggering are required. Ensure the 600 V blocking voltage meets load requirements. Verify thermal management for continuous 150 mA operation. Consider package constraints for through-hole assembly processes. Evaluate lifetime availability against production volume needs.

Triac, SCR Output Optoisolators Part Context

This part belongs to the TLP748J series of photocouplers featuring photothyristor outputs. It is distinct from zero-crossing variants and logic gate optocouplers. The family focuses on industrial power control applications requiring robust galvanic isolation between low-voltage control circuits and high-voltage AC loads.

Triac, SCR Output Optoisolators Replacement Considerations

Public confirmed substitute part numbers: TLP748J(F), TLP748JF(D4-TP4,F). These variants share identical core electrical characteristics and pin configurations. Verify specific ordering suffixes for packaging or tape-and-reel options if available.