QJ8025NH4RP

Triacs Overview

The Littelfuse QJ8025NH4RP is a bidirectional triac belonging to the QJxx25xHx series, designed for high-temperature AC switching applications. It features an RMS on-state current (It RMS) of 25 A and a rated repetitive off-state voltage (VDRM) of 800 V. The device supports non-repetitive on-state currents of 250 A and maintains a low on-state voltage of 1.8 V. Gate triggering specifications include a maximum voltage (Vgt) of 1.3 V and a maximum current (Igt) of 50 mA. The component operates within a junction temperature range of -40°C to +150°C and is housed in a TO-263AB-3 surface-mount package.

Triacs Feature Summary

• High-temperature capability with a maximum junction operating temperature of +150°C
• Snubberless alternistor design eliminates the need for external RC networks
• Glass-passivated junctions ensure long-term parameter stability and reliability

Triacs Applications

• AC motor speed control systems
• Solid-state relay circuits
• Industrial heating temperature modulation controls

Triacs Procurement Notes

Verify the specific ordering suffix against the manufacturer's official datasheet to confirm pinout compatibility and thermal characteristics. Ensure that the selected variant matches the required gate trigger current specifications for the intended driver circuit. Confirm RoHS compliance status directly from the latest production documentation before finalizing procurement orders.

Triacs Selection Notes

Select this component when a surface-mount TRIAC with high thermal tolerance is required for power switching. Compare the 25 A RMS rating against the load requirements to ensure adequate margin. Verify that the TO-263AB-3 package footprint aligns with the PCB layout constraints and that the 800 V blocking voltage exceeds the peak line voltage plus transient spikes.

Triacs Part Context

This part belongs to the Littelfuse QJxx25xHx series of high-temperature triacs. These devices are engineered as snubberless alternistors, offering robust performance in demanding environments. The series provides various packaging options, including through-hole and surface-mount configurations, to suit different assembly needs while maintaining consistent electrical characteristics across the family.

Triacs Replacement Considerations

Direct substitutes within the same series include QJ8025LH4TP (TO-220 package) and QJ8025RH4TP (TO-220 package). For surface-mount replacements, verify equivalent current and voltage ratings in other manufacturers' TO-263 offerings.