QJ8012NH4RP

Triacs Overview

The Littelfuse QJ8012NH4RP is a 12A high-temperature Alternistor TRIAC in the QJxx12xHx series, housed in a TO-263 (D²-PAK) surface-mount package. It features an 800V repetitive peak off-state voltage and operates across quadrants I, II, and III with a gate trigger current of 35mA. The device supports a maximum junction temperature of 150°C and handles a non-repetitive surge current of 120A at 60Hz. Key electrical parameters include a holding current of 40mA, a gate trigger voltage of 1.3V, and an on-state voltage of 1.6V at 17.0A. Thermal resistance from junction to case is 1.2°C/W.

Triacs Feature Summary

• Alternistor technology enables high commutation performance for extremely inductive loads without requiring snubber circuits.
• Three-quadrant operation (I, II, & III) provides versatile switching capabilities for AC power control applications.
• Glass-passivated junctions ensure robust protection against environmental factors and enhance reliability.
• Surface-mount D²-PAK packaging facilitates automated assembly and efficient thermal management.

Triacs Applications

• AC solid-state switches and static switching relays
• Heater control systems and lighting controls
• Motor speed control for home appliances and power tools

Triacs Procurement Notes

Verify the specific suffix 'RP' indicates the embossed carrier reel packing mode with a base quantity of 500 units as documented in the datasheet. Confirm that the 'N' designation corresponds to the TO-263 D²-PAK surface-mount package type. Ensure compatibility with RoHS compliance requirements before finalizing procurement specifications.

Triacs Selection Notes

Select this component for applications requiring high surge handling capability up to 120A and operation at elevated junction temperatures up to 150°C. The 35mA gate sensitivity is suitable for standard logic-level driving. Consider the 1.2°C/W junction-to-case thermal resistance for heat sink design calculations to maintain safe operating temperatures under continuous load conditions.

Triacs Part Context

This part belongs to the QJxx12xHx series of 12 Amp High Temperature Alternistor Triacs manufactured by Littelfuse. The series includes variants with different packages such as TO-220AB isolated (L-package), TO-220AB non-isolated (R-package), and TO-263 (N-package). The QJ8012NH4RP specifically utilizes the TO-263 package and 35mA gate sensitivity variant.

Triacs Replacement Considerations

Direct replacements within the same family include QJ8012NH5RP, which shares the same package but offers 50mA gate sensitivity. Other package options like QJ8012RH4RP or QJ8012LH4RP provide equivalent electrical ratings in TO-220 formats if surface mount is not required.