L4004D5TP Equivalent & Substitute Parts

Part Overview

The L4004D5TP is a Logic - Sensitive Gate TRIAC manufactured by Littelfuse Inc., rated for 400 V off-state voltage and 4 A on-state current in a Surface Mount TO-252 (DPAK) package. This component is Active in product status and ROHS3 compliant. Equivalent and substitute parts are identified based on matching electrical characteristics, package compatibility, and operational parameters within the thyristor category.

Key Parameters

Parameter	Value
Triac Type	Logic - Sensitive Gate
Voltage - Off State	400 V
Current - On State (It (RMS)) (Max)	4 A
Voltage - Gate Trigger (Vgt) (Max)	1.3 V
Current - Gate Trigger (Igt) (Max)	5 mA
Current - Hold (Ih) (Max)	10 mA
Operating Temperature	-40°C ~ 110°C (TJ)
Package / Case	TO-252-3, DPAK (2 Leads + Tab), SC-63
Mounting Type	Surface Mount
RoHS Status	ROHS3 Compliant

Substitute Part Grouping Explanation

Substitute parts for the L4004D5TP are qualified based on the following criteria:

Electrical Compatibility Parameters:

Triac Type: Logic - Sensitive Gate configuration
Current - On State (It (RMS)) (Max): 4 A minimum
Voltage - Gate Trigger (Vgt) (Max): 1.3 V or lower
Current - Gate Trigger (Igt) (Max): 5 mA or lower
Current - Hold (Ih) (Max): 10 mA or lower

Mechanical Compatibility Parameters:

Package / Case: TO-252-3, DPAK (2 Leads + Tab), SC-63
Mounting Type: Surface Mount

Compliance Parameters:

RoHS Status: ROHS3 Compliant
Product Status: Active

The substitute parts identified (T405-600B, T405-600B-TR, T405Q-600B-TR) meet or exceed the electrical specifications of the L4004D5TP while maintaining identical package and mounting compatibility. The higher off-state voltage rating (600 V vs. 400 V) in substitute parts provides enhanced voltage margin and does not compromise circuit functionality in applications designed for 400 V operation.

Parameter Comparison

Parameter	L4004D5TP (Littelfuse)	T405-600B (STMicroelectronics)	T405-600B-TR (STMicroelectronics)	T405Q-600B-TR (STMicroelectronics)
Triac Type	Logic - Sensitive Gate	Logic - Sensitive Gate	Logic - Sensitive Gate	Logic - Sensitive Gate
Voltage - Off State	400 V	600 V	600 V	600 V
Current - On State (It (RMS)) (Max)	4 A	4 A	4 A	4 A
Voltage - Gate Trigger (Vgt) (Max)	1.3 V	1.3 V	1.3 V	1.3 V
Current - Gate Trigger (Igt) (Max)	5 mA	5 mA	5 mA	5 mA
Current - Hold (Ih) (Max)	10 mA	10 mA	10 mA	10 mA
Operating Temperature	-40°C ~ 110°C (TJ)	-40°C ~ 125°C (TJ)	-40°C ~ 125°C (TJ)	-40°C ~ 125°C (TJ)
Package / Case	TO-252-3, DPAK (2 Leads + Tab), SC-63	TO-252-3, DPAK (2 Leads + Tab), SC-63	TO-252-3, DPAK (2 Leads + Tab), SC-63	TO-252-3, DPAK (2 Leads + Tab), SC-63
Mounting Type	Surface Mount	Surface Mount	Surface Mount	Surface Mount
RoHS Status	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant
Packaging	Tube	Tube	Cut Tape (CT) & Digi-Reel®	Cut Tape (CT) & Digi-Reel®

Engineering Selection Recommendations

All identified substitute parts (T405-600B, T405-600B-TR, T405Q-600B-TR) are Active products manufactured by STMicroelectronics and maintain ROHS3 compliance and REACH Unaffected status consistent with the L4004D5TP. The substitute parts are electrically and mechanically compatible with the original part specification.

Selection between substitute options is determined by packaging and supply requirements:

T405-600B: Tube packaging for lower-volume applications
T405-600B-TR: Cut Tape (CT) & Digi-Reel® packaging for automated assembly
T405Q-600B-TR: Cut Tape (CT) & Digi-Reel® packaging with enhanced non-repetitive surge current rating (35A/38A vs. 30A/31A)

The higher operating temperature range (-40°C ~ 125°C vs. -40°C ~ 110°C) and elevated off-state voltage rating (600 V vs. 400 V) of substitute parts provide additional design margin without functional compromise in 400 V applications.

Frequently Asked Questions (FAQ)

Q: Can T405-600B series parts directly replace L4004D5TP in existing designs?

A: Yes. The T405-600B, T405-600B-TR, and T405Q-600B-TR parts are electrically and mechanically compatible with the L4004D5TP. All parts share identical gate trigger voltage, gate trigger current, hold current, on-state current rating, and TO-252 DPAK package configuration. The higher voltage rating (600 V) of substitute parts does not affect operation in 400 V circuits.

Q: What is the difference between T405-600B, T405-600B-TR, and T405Q-600B-TR?

A: The primary differences are packaging format and non-repetitive surge current rating. T405-600B is supplied in Tube packaging. T405-600B-TR and T405Q-600B-TR are supplied in Cut Tape (CT) & Digi-Reel® format for automated assembly. T405Q-600B-TR has a higher non-repetitive surge current rating (35A/38A at 50/60 Hz) compared to T405-600B and T405-600B-TR (30A/31A at 50/60 Hz).

Q: Are all substitute parts ROHS3 compliant?

A: Yes. All substitute parts (T405-600B, T405-600B-TR, T405Q-600B-TR) are ROHS3 compliant and REACH Unaffected, matching the compliance status of the L4004D5TP.

Q: What is the impact of the higher operating temperature range in substitute parts?

A: Substitute parts are rated for -40°C ~ 125°C (TJ) compared to the L4004D5TP rating of -40°C ~ 110°C (TJ). This extended range provides additional thermal margin and does not affect compatibility in applications operating within the original temperature specification.

Q: Which packaging option should be selected for high-volume production?

A: T405-600B-TR or T405Q-600B-TR in Cut Tape (CT) & Digi-Reel® packaging are recommended for automated assembly and high-volume production. T405Q-600B-TR is preferred if enhanced surge current capability is required.

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