Q6008LH458

Triacs Overview

The Littelfuse Q6008LH458 is a bidirectional Alternistor triac rated for 600V repetitive peak off-state voltage and 8A RMS on-state current. It utilizes a TO-220-3 insulated tab package for through-hole mounting, supporting operation from -40°C to +125°C junction temperature. The device features a gate trigger voltage of 1.3V maximum and a holding current of 35mA maximum. Non-repetitive surge currents are specified at 83A and 100A. It offers low leakage current of 10uA and an on-state voltage of 1.5V.

Triacs Feature Summary

• Bidirectional Alternistor design for robust AC switching
• Insulated tab package for efficient thermal management
• High temperature capability up to 150°C

Triacs Applications

• Motor speed control systems
• Temperature modulation circuits
• AC phase control applications

Triacs Procurement Notes

Verify the specific suffix '58' against official Littelfuse documentation to confirm exact electrical tolerances and marking codes. Ensure the TO-220-3 insulated tab configuration matches the target PCB isolation requirements. Confirm RoHS compliance status with the manufacturer prior to final procurement.

Triacs Selection Notes

Select this component for applications requiring high surge tolerance and reliable AC switching in industrial environments. The 8A rating suits moderate power loads. Verify that the 600V blocking voltage exceeds the peak line voltage plus transients. Consider thermal resistance limits when designing heatsinking solutions for continuous operation.

Triacs Part Context

This part belongs to the Qxx08xH series of high-temperature triacs. It serves as a solid-state alternative to mechanical relays in AC control circuits. The Alternistor technology provides improved ruggedness compared to standard triacs, making it suitable for demanding switching duties.

Triacs Replacement Considerations

Q6008LH4 is a confirmed substitute within the same family offering identical electrical characteristics and pinout compatibility.