Q6008LH4

Triacs Overview

The Littelfuse Q6008LH4 is an Alternistor TRIAC rated for 600 V repetitive peak off-state voltage and 8 A RMS on-state current. It utilizes a TO-220AB isolated package with three terminals. Key electrical parameters include a maximum gate trigger voltage of 1.5 V, a maximum gate trigger current of 35 mA, and a maximum holding current of 35 mA. The device supports a minimum commutating dv/dt of 25 V/µs and a critical off-state voltage rise rate of 425 V/µs. Leakage current is limited to 0.01 mA at rated voltage. Operating temperature ranges from -40 °C to +125 °C junction temperature.

Triacs Feature Summary

• Alternistor technology provides high reliability and robust performance in power control applications.
• Isolated TO-220AB package design facilitates mounting to heat sinks without additional insulators.
• High commutating dv/dt capability ensures stable operation in inductive load environments.

Triacs Applications

• Industrial motor speed control systems
• Solid state relays for AC switching
• Lighting dimmer circuits

Triacs Procurement Notes

Verify component authenticity through authorized Littelfuse distributors or Teccor Electronics channels. Confirm RoHS compliance status as historical data indicates non-compliance for this specific suffix variant. Validate datasheet revisions and manufacturing origin before integration into production designs.

Triacs Selection Notes

Select the Q6008LH4 when an isolated TRIAC is required for high-reliability AC power switching. Ensure the application voltage does not exceed 600 V and current demands remain within the 8 A RMS limit. Consider thermal management requirements given the TO-220AB package constraints and operating temperature range up to 125 °C.

Triacs Part Context

This component belongs to the Q6008 series of standard TRIACs manufactured by Teccor Electronics, a subsidiary of Littelfuse. The 'L' denotes the leaded version, while 'H4' typically indicates specific packaging or environmental compliance variations within the product line. It serves as a direct replacement for legacy TECCOR TRIACs in existing circuit designs.

Triacs Replacement Considerations

Direct substitutes include Q6008L4 and Q6008RH4. Verify pinout compatibility and thermal resistance characteristics when swapping between these variants. Ensure gate trigger specifications match the driving circuit requirements to maintain reliable turn-on performance.