Q4012NH5RP

Triacs Overview

The Littelfuse Q4012NH5RP is a bidirectional triac designed for surface-mount applications. It features an RMS on-state current of 12 A and a rated repetitive peak off-state voltage (VDRM) of 400 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. The on-state voltage is specified at 1.6 V, with a non-repetitive peak on-state current capability of 110 A or 120 A depending on the pulse width. Leakage current at VDRM is limited to 10 uA.

Triacs Feature Summary

• Surface-mount construction in SMTO-263-2 package for automated PCB assembly
• High thermal stability supporting operation up to +125°C junction temperature
• Sensitive gate triggering characteristics compatible with standard logic drivers

Triacs Applications

• AC power control circuits
• Solid-state relay implementations
• Lighting dimmer modules

Triacs Procurement Notes

Verify component authenticity by cross-referencing the manufacturer part number Q4012NH5RP with official Littelfuse documentation. Confirm RoHS compliance status through the specific datasheet provided by the supplier. Ensure the ordering suffix matches the required reel or cut tape packaging format. Validate that the received units correspond exactly to the specified 12A/400V rating before integration into production lines.

Triacs Selection Notes

Select this component when a 12A RMS current handling capacity is required in a compact surface-mount form factor. The 400V voltage rating suits low-voltage AC switching applications. Consider the 50mA gate trigger requirement for driver interface compatibility. Compare against the Q4010NH5RP for lower current needs or the Q4016NH4RP for higher current demands within the same series family.

Triacs Part Context

This triac belongs to the Qxx12xHx series from Littelfuse, which focuses on high-temperature performance. The 'H' designation typically indicates enhanced thermal capabilities compared to standard variants. It shares the SMTO-263-2 footprint with other devices in the Q40xxNH series, facilitating design flexibility across different current ratings while maintaining consistent mechanical mounting standards.

Triacs Replacement Considerations

Direct substitutes within the same series include the Q4010NH5RP for reduced current requirements. For higher current capacity, the Q4016NH4RP offers 16A RMS in the same package. Verify that any replacement maintains the 400V VDRM rating and compatible gate trigger specifications to ensure circuit functionality without redesign.