Q2008RH4

Triacs Overview

The Littelfuse Q2008RH4 is a high-temperature Alternistor TRIAC designed for robust power control applications. It features an RMS on-state current (It RMS) of 8 A and supports non-repetitive peak on-state currents of 83 A or 100 A depending on the specific rating variant. The device offers a rated repetitive off-state voltage (VDRM) of 600 V with a maximum off-state leakage current of 10 uA at VDRM. Key electrical parameters include an on-state voltage of 1.5 V, a maximum holding current (Ih) of 35 mA, and gate trigger specifications of 1.3 V (Vgt) and 35 mA (Igt). It operates within a temperature range of -40 C to +150 C and utilizes a TO-220AB-3 through-hole package.

Triacs Feature Summary

• High-temperature capability suitable for demanding thermal environments
• Alternistor technology providing high reliability and ruggedness
• Through-hole mounting for secure mechanical attachment

Triacs Applications

• Industrial motor control systems
• High-temperature heating element regulation
• Solid-state relay designs requiring high thermal stability

Triacs Procurement Notes

Verify the exact datasheet revision and specific current rating variant (83 A vs 100 A non-repetitive current) against the manufacturer's official documentation before procurement. Confirm that the TO-220AB-3 package dimensions match the target PCB footprint requirements. Ensure the selected component meets the specific thermal management needs of the application given the 150 C maximum operating temperature limit.

Triacs Selection Notes

Select this component when a TRIAC requires operation above standard industrial temperature ranges. The 600 V blocking voltage makes it suitable for lower voltage AC mains applications where higher voltage ratings are unnecessary. Compare the 1.5 V on-state voltage against alternative devices to ensure efficient power dissipation in the final assembly design.

Triacs Part Context

This part belongs to the Qxx06xH series from Littelfuse, which focuses on high-reliability Alternistor TRIACs. These components are engineered to replace traditional thyristors in applications requiring superior surge handling and thermal performance. The series is characterized by its robust construction and suitability for harsh operating conditions.

Triacs Replacement Considerations

Direct replacements may include other 8 A, 600 V TRIACs in TO-220 packages from Littelfuse or competitors, provided they meet the same electrical and thermal specifications. Verify pinout compatibility and gate trigger characteristics to ensure seamless integration into existing circuits.