Q4008LTTP

$3.03

Description：TRIAC INT TRIGGER 400V 8A TO220
Series：-

SKU:b6f32f5f828c Category: TRIACs Brand: Littelfuse Inc.

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Product introduction

Q4008LTTP is listed in the Triacs range at ChipApex. The manufacturer field lists Littelfuse Inc.. Its product description is TRIAC INT TRIGGER 400V 8A TO220. Review the specifications below when checking this part for your BOM.

Triacs specifications for Q4008LTTP

Description：TRIAC INT TRIGGER 400V 8A TO220
Series：-
Mfr：Littelfuse Inc.
Package：Tube
Triac Type：Internally Triggered
Voltage - Off State：400 V
Current - On State (It (RMS)) (Max)：8:00 AM
Voltage - Gate Trigger (Vgt) (Max)：-
Current - Non Rep. Surge 50, 60Hz (Itsm)：83A, 100A
Current - Gate Trigger (Igt) (Max)：-
Current - Hold (Ih) (Max)：60 mA
Configuration：Single
Operating Temperature：-40°C ~ 125°C (TJ)
Mounting Type：Through Hole
Package / Case：TO-220-3 Isolated Tab
Supplier Device Package：TO-220AB-L

Triacs datasheet and documents for Q4008LTTP

Q4008LTTP

Triacs Overview

The Littelfuse Q4008LTTP is an internally triggered bidirectional triac designed for AC switching applications. It features a rated repetitive off-state voltage of 400 V and an RMS on-state current of 8 A. The device operates within a junction temperature range of -40°C to +125°C. Key electrical parameters include an on-state voltage of 1.6 V, a maximum holding current of 60 mA, and non-repetitive peak on-state currents of 83 A or 100 A depending on the pulse width. It utilizes a TO-220-2 package with an isolated tab for through-hole mounting.

Triacs Feature Summary

Internally triggered Quadrac architecture eliminates external gate circuitry requirements
Bidirectional AC switching capability for phase control applications
High commutation performance suitable for inductive loads

Triacs Applications

Motor speed control systems
Temperature modulation controls
Lighting dimmer circuits

Triacs Procurement Notes

Verify the specific suffix against official Littelfuse documentation to confirm internal triggering characteristics and pinout configuration. Ensure the procurement source provides valid UL agency approval files corresponding to the TECCOR brand series. Cross-reference the datasheet revision date to ensure compliance with current RoHS and REACH standards before finalizing component selection.

Triacs Selection Notes

Select this component for applications requiring simplified gate drive circuits due to its integrated trigger mechanism. The 400 V rating suits low-voltage AC mains applications. Consider the thermal management requirements associated with the TO-220 package when designing heat dissipation paths for continuous 8 A operation.

Triacs Part Context

This part belongs to the Qxx08xx series of sensitive and standard triacs manufactured by Littelfuse under the TECCOR brand. The series is engineered for general-purpose AC power control, offering reliable switching performance across various industrial and consumer electronics environments.

Triacs Replacement Considerations

Q4008L4TP

Triacs FAQ

What distinguishes the Q4008LTTP from standard triacs?

It is an internally triggered device (Quadrac), meaning it does not require an external gate trigger signal to operate, simplifying the circuit design.