Q4025LH5TP

Triacs Overview

The Littelfuse Q4025LH5TP is a bidirectional triac designed for high-temperature applications. It features a rated repetitive off-state voltage (VDRM) of 400 V and an on-state RMS current (IT(RMS)) of 25 A. The device operates within a junction temperature range of -40°C to +150°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. It exhibits an on-state voltage of 1.8 V and a leakage current of 10 µA at VDRM. The component is housed in an isolated TO-220AB package with two leads.

Triacs Feature Summary

• High-temperature capability suitable for demanding thermal environments
• Isolated construction for enhanced safety and mounting flexibility
• Low gate sensitivity facilitating straightforward driver interface

Triacs Applications

• Solid-state relays requiring high thermal stability
• Industrial motor control systems
• Lighting dimmer circuits

Triacs Procurement Notes

Verify the specific suffix 'H5' against the manufacturer's latest datasheet to confirm isolation characteristics and pinout configuration. Ensure the ordering quantity aligns with the manufacturer's standard packaging requirements. Cross-reference the part number with official Littelfuse documentation to validate compliance with relevant RoHS directives before finalizing procurement.

Triacs Selection Notes

Select this component when an isolated triac with a 400 V rating and 25 A continuous current capacity is required. The low gate trigger current simplifies drive circuit design compared to higher sensitivity devices. Verify that the operating environment does not exceed the specified maximum junction temperature of 150°C. Ensure the application voltage remains below the 400 V repetitive peak off-state limit.

Triacs Part Context

This part belongs to the QJxx25xHx series from Littelfuse, which focuses on high-temperature thyristor solutions. The 'Q' prefix typically denotes a triac, while '25' indicates the 25 A current rating. The 'H' signifies high-temperature performance, and '5' often relates to specific gate sensitivity or package variations within the family.

Triacs Replacement Considerations

The Q4025R5TP is listed as an alias for Q4025R5, but it lacks the explicit 'H' high-temperature designation found in the Q4025LH5TP. Verify if the non-isolated or standard temperature variant meets the specific thermal and isolation requirements of the target application before substitution.