LJ4004V8TP

Triacs Overview

The Littelfuse LJ4004V8TP is a bidirectional triac designed for AC switching and phase control applications. It features an RMS on-state current (It RMS) of 4 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 +150°C. Key electrical parameters include a maximum on-state voltage of 1.4 V, a gate trigger current (Igt) of 35 mA, and a maximum off-state leakage current of 10 µA at VDRM. It is housed in a TO-251-3 (V-Pak) surface-mount package.

Triacs Feature Summary

• Sensitive gate type ensuring reliable triggering in Quadrants I and IV for digital control circuitry compatibility.
• High-temperature Alternistor design optimized for high commutation rates and robust AC switching performance.
• Surface-mount TO-251-3 package facilitates automated assembly and compact board layout.

Triacs Applications

• Motor speed control systems
• Temperature modulation controls
• Lighting control circuits
• Static switching relays

Triacs Procurement Notes

Verify the specific suffix 'V8TP' against the manufacturer's official datasheet to confirm the exact pinout and packaging configuration. Ensure the component meets RoHS and REACH compliance requirements for the target market. Cross-reference the Littelfuse part number with authorized distributors to validate authenticity and current production status before procurement.

Triacs Selection Notes

Select this component when a 4 A RMS current rating and 400 V blocking voltage are required in a compact SMD form factor. The sensitive gate characteristic makes it suitable for direct interface with microcontrollers or logic gates without additional drive circuitry. Consider the thermal management capabilities of the TO-251-3 package for the intended power dissipation levels in the application.

Triacs Part Context

This part belongs to the LJxx06xx series family of high-temperature Alternistor Triacs from Littelfuse. While the model number suggests a 4 A rating, it shares design characteristics with the 6 A series, offering high commutation capability. It is distinct from through-hole variants like the L4004R5, providing a specialized solution for surface-mount PCB designs requiring robust AC phase control.

Triacs Replacement Considerations

Publicly confirmed substitute part numbers are not available in the provided documentation. Engineers should consult Littelfuse's official replacement guide or contact technical support directly for validated cross-references that match the specific electrical and mechanical constraints of the LJ4004V8TP.

Triacs FAQ

What is the gate trigger current for the LJ4004V8TP?

The gate trigger current (Igt) is specified as 35 mA.

In which quadrants does this triac guarantee gate control?

As a sensitive type component, it guarantees gate control in Quadrants I and IV, making it suitable for digital control circuitry.

What is the maximum operating junction temperature?

The maximum operating temperature is +150°C.