QK025N5RP

Triacs Overview

The Littelfuse QK025N5RP is a bidirectional triac from the Teccor Qxx25xx series, designed for surface-mount applications in the SMTO-263-2 package. 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 supports non-repetitive surge currents of 167 A and 200 A. Key electrical parameters include a maximum holding current of 100 mA, gate trigger voltage of 2.5 V, and gate trigger current of 50 mA. On-state voltage is 1.8 V with leakage current of 20 uA at VDRM. Operating temperature ranges from -40 C to +125 C.

Triacs Feature Summary

• High voltage blocking capability up to 1 kV for robust AC switching
• Integrated diac functionality within the same package for simplified circuit design
• Glass-passivated junctions ensure long-term parameter stability and reliability

Triacs Applications

• AC speed control systems
• Temperature modulation controls
• Lighting controls requiring noise immunity

Triacs Procurement Notes

Verify component authenticity through authorized Littelfuse distributors or direct manufacturer channels. Confirm RoHS compliance status via official datasheets before integration. Ensure storage conditions maintain device integrity. Validate package markings against official specifications to prevent counterfeit substitution during assembly processes.

Triacs Selection Notes

Select this component when high voltage isolation and integrated triggering are required in compact surface-mount designs. The 1 kV rating suits mains-connected loads. Verify gate sensitivity matches driver capabilities. Consider thermal management for continuous 25 A operation. Compare against standard triacs if external diac usage is acceptable to reduce BOM complexity.

Triacs Part Context

Part of the Teccor Qxx25xx series, the QK025N5RP integrates a diac trigger inside the triac package. This Quadrac configuration eliminates the need for discrete diac components and associated assembly steps. The SMTO-263-2 package provides efficient thermal dissipation for surface-mount technology applications.

Triacs Replacement Considerations

Q4025N5RP offers similar 25 A current but lower 400 V voltage rating. Q8015N5RP provides 800 V rating with reduced 15 A current capacity. Substitution requires verifying voltage headroom and current handling requirements match application needs.