TLP268J(TPR,E

Triac, SCR Output Optoisolators Overview

The TLP268J(TPR,E is a phototriac output optocoupler featuring an integrated zero-crossing detection circuit. It provides electrical isolation with a rated insulation voltage of 3750 Vrms and supports a peak off-state voltage (VDRM) of 600 V. The device operates within a temperature range of -40°C to +100°C. Key electrical parameters include a maximum forward current (If) of 30 mA, a typical forward voltage (Vf) of 1.27 V, and a maximum trigger current (Ift) of 3 mA. It handles an RMS on-state current (ItRMS) of 70 mA with a turn-on time of 100 µs. Packaged in a 6-SOP surface-mount format, it ensures reliable triac triggering.

Triac, SCR Output Optoisolators Feature Summary

• Integrated zero-crossing circuit for reduced electromagnetic interference during switching
• High isolation voltage capability of 3750 Vrms for safety compliance
• Low trigger current requirement of 3 mA max for efficient LED drive
• Surface-mount SO-6 package design for automated assembly

Triac, SCR Output Optoisolators Applications

• Solid-state relay driver circuits
• AC power switch control systems
• Industrial motor control interfaces
• Home appliance AC load management

Triac, SCR Output Optoisolators Procurement Notes

Verify the specific suffix (TPR,E) confirms the tape-and-reel packaging configuration and lead-free status. Confirm that the zero-crossing feature is required for the application, as non-zero-crossing variants exist within the same family. Ensure the 6-SOP footprint matches the PCB layout constraints. Cross-reference the manufacturer datasheet for detailed thermal derating curves and recommended soldering profiles to prevent component damage during assembly.

Triac, SCR Output Optoisolators Selection Notes

Select this component when low trigger current is necessary to minimize LED drive power consumption while maintaining robust triac gating. The integrated zero-crossing function is critical for applications requiring minimal noise generation or inrush current reduction. Compare against the TLP267J if zero-crossing functionality is not needed, as it offers similar electrical ratings but without the internal detection circuit. Ensure the 600 V blocking voltage meets the peak line voltage requirements of the target AC system.

Triac, SCR Output Optoisolators Part Context

This part belongs to the Toshiba TLP265J/TLP266J/TLP267J/TLP268J series of phototriac output optocouplers. These devices are designed for controlling AC loads such as heaters, lamps, and motors. The TLP268J variant specifically distinguishes itself by including a zero-crossing detector, which synchronizes the triac firing with the AC waveform zero point. This series utilizes a GaAs infrared LED coupled with a photo-triac output structure.

Triac, SCR Output Optoisolators Replacement Considerations

The TLP267J(TPR,E is a direct functional substitute if zero-crossing detection is not required. For general replacement, verify that any alternative component maintains the 3750 Vrms isolation rating and 600 V VDRM specification. Ensure the replacement package matches the 6-SOP dimensions to fit existing footprints.