QK025N5TP

Triacs Overview

The Littelfuse QK025N5TP is a bidirectional triac from the Teccor Qxx25xx series, designed for AC switching and phase control applications. It features a rated repetitive off-state voltage (VDRM) of 1 kV and an on-state RMS current (It RMS) of 25 A. The device operates within a temperature range of -40°C to +125°C and utilizes an SMTO-263-2 surface-mount package. Key electrical parameters include a gate trigger current (Igt) of 50 mA, a holding current maximum of 100 mA, and an on-state voltage of 1.8 V. Non-repetitive peak on-state currents are specified at 167 A and 200 A, with a maximum off-state leakage current of 20 uA under VDRM conditions.

Triacs Feature Summary

• High-voltage capability suitable for demanding AC power control environments
• Integrated glass-passivated junctions for enhanced parameter stability and long-term reliability
• Surface-mount construction optimized for automated PCB assembly processes

Triacs Applications

• AC motor speed control systems
• Solid-state relay implementations
• Industrial heating temperature modulation controls

Triacs Procurement Notes

Verify component authenticity through authorized Littelfuse distributors or direct manufacturer channels. Confirm RoHS compliance status via official datasheets prior to integration. Ensure storage conditions maintain device integrity against moisture sensitivity. Validate package markings match the specific QK025N5TP designation to prevent counterfeit substitution during supply chain acquisition.

Triacs Selection Notes

Select this component when a 1 kV blocking voltage and 25 A continuous current capacity are required in a surface-mount form factor. Compare gate sensitivity requirements against the 50 mA trigger specification. Evaluate thermal management needs given the 125°C maximum operating limit. Consider alternative current ratings within the Qxx25xx family if load profiles differ significantly from the 25 A RMS rating.

Triacs Part Context

This part belongs to the Littelfuse Teccor Qxx25xx series of high-power triacs. The series provides robust solutions for industrial AC control, featuring standardized pinouts across varying current and voltage ratings. The QK025N5TP specifically addresses applications requiring high voltage isolation combined with significant current handling capabilities in a compact SMD footprint.

Triacs Replacement Considerations

Direct substitutes within the same series include QK015N5TP for lower current requirements. Cross-reference technical specifications carefully to ensure voltage and current ratings meet or exceed original design constraints before implementing any alternative components.