Q8025PH5-C

Triacs Overview

The Littelfuse Q8025PH5-C is an Alternistor triac designed for high-power switching applications. It features a Fastpak (TO-3 base) package with chassis mount installation, supporting an RMS on-state current of 25 A and a repetitive peak off-state voltage of 800 V. The device operates within a junction temperature range of -40°C to +125°C. Key electrical parameters include a maximum holding current of 50 mA, a gate trigger voltage of 1.3 V, and a gate trigger current of 50 mA. Non-repetitive surge currents are rated at 208 A or 250 A depending on frequency conditions.

Triacs Feature Summary

• Snubberless operation capability for simplified circuit design
• High thermal stability with a maximum junction temperature of 125°C
• Sensitive gate structure allowing direct interfacing with control logic

Triacs Applications

• Industrial motor controls
• Solid-state relays
• Heating element regulation

Triacs Procurement Notes

Verify the specific suffix configuration against the manufacturer's latest datasheet to ensure compatibility with required thermal and electrical specifications. Confirm RoHS compliance status and check for any end-of-life notices or alternative package recommendations from Littelfuse before finalizing procurement plans.

Triacs Selection Notes

Select this component when chassis mounting is required for superior heat dissipation in high-current scenarios. Ensure the driving circuit can supply the specified 50 mA gate trigger current. Verify that the system's voltage spikes remain below the 800 V rating to prevent device failure during commutation.

Triacs Part Context

This part belongs to the Qxx25xhx series of Alternistors, which are optimized for snubberless applications. Unlike standard triacs, these devices utilize advanced silicon technology to handle rapid voltage changes without external RC snubber networks, reducing component count and improving reliability in industrial power control environments.

Triacs Replacement Considerations

Direct pin-compatible replacements may be limited due to the specific Fastpak/TO-3 base footprint. Evaluate other parts within the Q8025 family, such as Q8025P5 or Q8025NH5RP, only if the mechanical mounting constraints allow for through-hole or surface-mount alternatives respectively.