QK008N5TP

Triacs Overview

The Littelfuse QK008N5TP is a bidirectional triac designed for high-voltage AC power control applications. It features an RMS on-state current (It RMS) of 8 A and supports non-repetitive peak on-state currents ranging from 83 A to 100 A. The device is rated for a repetitive peak off-state voltage (VDRM) of 1 kV, with a maximum off-state leakage current of 20 uA at VDRM. Key electrical parameters include a gate trigger voltage (Vgt) of 1.3 V and a gate trigger current (Igt) of 35 mA. The holding current (Ih) is specified at a maximum of 35 mA, while the on-state voltage is 1.6 V. It operates within a temperature range of -40 C to +125 C and is housed in an SMTO-263-2 surface-mount package.

Triacs Feature Summary

• High voltage blocking capability suitable for demanding AC line applications
• Sensitive gate drive characteristics enabling efficient triggering circuits
• Robust thermal performance supporting operation up to 125 C

Triacs Applications

• Solid-state relays requiring high isolation and switching speed
• AC motor speed control systems for industrial equipment
• Lighting dimmer circuits for commercial and residential use

Triacs Procurement Notes

Verify component authenticity through authorized Littelfuse distributors or certified partners. Confirm RoHS compliance status via official datasheets before integration. Ensure storage conditions maintain moisture sensitivity levels appropriate for surface-mount assembly processes.

Triacs Selection Notes

Select this model when a 1 kV rating is required alongside an 8 A continuous current capacity. Compare gate trigger requirements against available driver capabilities, noting the 1.3 V threshold. Evaluate thermal management needs based on the 125 C maximum junction temperature limit and SMTO-263-2 package constraints.

Triacs Part Context

This component belongs to the Qxx08x series of triacs manufactured by Littelfuse. It shares the SMTO-263-2 form factor with other devices in the family but differs in voltage and current ratings. The 'N' suffix typically denotes specific pinout or packaging variations within the manufacturer's catalog.

Triacs Replacement Considerations

Direct substitutes may include QK008NH4RP, which offers similar 1 kV/8 A ratings but uses reel packaging instead of tube. Verify pin compatibility and gate sensitivity differences before swapping.