QJ8010RH4TP

Triacs Overview

The Littelfuse QJ8010RH4TP is a high-temperature Alternistor TRIAC rated for 10 A RMS on-state current and 800 V repetitive peak off-state voltage. It operates in Quadrants I, II, and III with a maximum junction temperature of 150°C. The device features a non-isolated TO-220AB (R-Package) leaded construction. Key electrical parameters include a gate trigger current of 35 mA maximum, a holding current of 40 mA maximum, and a peak on-state voltage of 1.6 V at 14.1 A. It supports a non-repetitive surge current of 120 A at 60 Hz.

Triacs Feature Summary

• Alternistor design enables operation in Quadrants I, II, and III for high commutation capability without snubber requirements.
• Glass-passivated junctions provide protection against environmental stress and ensure reliability.
• Electrically isolated semiconductor device recognized to UL 1557 standards.
• Solid-state switching eliminates arcing and contact bounce associated with mechanical relays.

Triacs Applications

• AC solid-state switches and static switching relays
• Heater control and lighting controls
• Motor speed control systems
• Power tools and lawn care equipment

Triacs Procurement Notes

Verify the specific ordering suffix and package variant when sourcing. Confirm that the R-package designation corresponds to the non-isolated mounting tab configuration required by the circuit design. Ensure compatibility with the specified thermal management strategy for the TO-220AB form factor.

Triacs Selection Notes

Select this component for applications requiring high surge handling and operation in all three triggering quadrants. The 800 V rating suits general AC line voltages. Verify that the gate drive circuit can supply the required 35 mA trigger current. Consider the thermal resistance values for heat sink sizing to maintain junction temperature within limits.

Triacs Part Context

This part belongs to the QJxx10xHx series of 10 A high-temperature thyristors from Littelfuse. The series includes variants with different voltage ratings (600 V or 800 V), gate sensitivities, and package options such as TO-220 isolated and TO-263 surface mount packages.

Triacs Replacement Considerations

Direct substitutes within the same family include QJ8010LH4TP (isolated package) or QJ8010NH4TP (surface mount). Cross-manufacturer replacements require matching IT(RMS), VDRM, and package dimensions while verifying quadrant operation compatibility.

Triacs FAQ

Does the QJ8010RH4TP operate in Quadrant IV?

No, the Alternistor TRIAC design does not operate in Quadrant IV. It is optimized for Quadrants I, II, and III.

What is the maximum non-repetitive surge current for this device?

The device supports a non-repetitive surge peak on-state current of 120 A at 60 Hz for a full cycle duration.

Is the mounting tab electrically isolated?

No, the 'R' in the part number indicates the TO-220AB non-isolated package where the mounting tab is common with the MT2 lead.