L2004D5TP Equivalent & Substitute Parts

Part Overview

The L2004D5TP is a Logic-Sensitive Gate TRIAC manufactured by Littelfuse Inc., rated for 200V off-state voltage and 4A on-state current in a Surface Mount TO-252 (DPAK) package. This component is classified as Obsolete, making equivalent and substitute parts necessary for ongoing design support and procurement. The part operates across a temperature range of -40°C to 110°C and is RoHS3 compliant with MSL Level 1 (Unlimited moisture sensitivity).

Key Parameters

Parameter	Value
Triac Type	Logic - Sensitive Gate
Voltage - Off State	200 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
MSL Rating	1 (Unlimited)

Substitute Part Grouping Explanation

Substitution for the L2004D5TP is determined by the following critical parameters: Triac Type (Logic - Sensitive Gate), Current - On State (4A maximum), Voltage - Gate Trigger (1.3V maximum), Current - Gate Trigger (5mA maximum), Current - Hold (10mA maximum), Package / Case (TO-252-3 DPAK), and Mounting Type (Surface Mount). All substitute parts maintain these core electrical and mechanical specifications.

The substitute parts are grouped into two categories:

Littelfuse Upgrades: L4004D5TP and L6004D5TP provide higher off-state voltage ratings (400V and 600V respectively) while maintaining identical gate trigger characteristics and package configuration. These are direct upgrades suitable for applications requiring higher voltage withstand capability.

Manufacturer-Recommended Alternative: T405Q-600B-TR from STMicroelectronics is the manufacturer-recommended substitute, offering 600V off-state voltage with identical gate trigger specifications and the same DPAK package. This part is Active status with extended temperature range (-40°C to 125°C).

Parameter Comparison

Parameter	L2004D5TP	L4004D5TP	L6004D5TP	T405Q-600B-TR
Manufacturer	Littelfuse Inc.	Littelfuse Inc.	Littelfuse Inc.	STMicroelectronics
Product Status	Obsolete	Active	Active	Active
Voltage - Off State	200 V	400 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 - Non Rep. Surge 50, 60Hz (Itsm)	33A, 40A	33A, 40A	33A, 40A	35A, 38A
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 ~ 110°C (TJ)	-40°C ~ 110°C (TJ)	-40°C ~ 125°C (TJ)
Package / Case	TO-252-3, DPAK	TO-252-3, DPAK	TO-252-3, DPAK	TO-252-3, DPAK
Mounting Type	Surface Mount	Surface Mount	Surface Mount	Surface Mount
RoHS Status	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant
MSL Rating	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)

Engineering Selection Recommendations

For applications currently using the obsolete L2004D5TP, the following selection criteria apply:

Direct Voltage Upgrade Path: If the application circuit can tolerate higher off-state voltage ratings, L4004D5TP (400V) and L6004D5TP (600V) from Littelfuse provide Active status alternatives with identical gate trigger characteristics and package compatibility. Both maintain RoHS3 compliance and MSL Level 1 rating.

Manufacturer-Recommended Cross-Reference: T405Q-600B-TR from STMicroelectronics is the designated manufacturer-recommended substitute. This part offers 600V off-state voltage with extended operating temperature range (-40°C to 125°C) compared to the original specification. It maintains all critical gate trigger parameters and DPAK package configuration. This part carries Active product status with RoHS3 compliance and MSL Level 1 rating.

All substitute parts are RoHS3 compliant and carry MSL Level 1 (Unlimited) moisture sensitivity ratings, ensuring compatibility with standard PCB assembly processes.

Frequently Asked Questions (FAQ)

Q: Can L4004D5TP or L6004D5TP be used as direct replacements for L2004D5TP?

A: Yes, both parts maintain identical gate trigger voltage (1.3V maximum), gate trigger current (5mA maximum), hold current (10mA maximum), on-state current (4A maximum), and DPAK package configuration. The higher off-state voltage ratings (400V and 600V respectively) make these suitable upgrades for applications where the original 200V rating is sufficient but higher voltage margin is beneficial.

Q: What is the difference between the Littelfuse substitutes and the STMicroelectronics T405Q-600B-TR?

A: All three substitute parts maintain identical gate trigger specifications and DPAK packaging. The primary differences are: L4004D5TP provides 400V off-state voltage, L6004D5TP and T405Q-600B-TR both provide 600V off-state voltage. T405Q-600B-TR offers an extended operating temperature range (-40°C to 125°C versus -40°C to 110°C) and is the manufacturer-recommended cross-reference.

Q: Are all substitute parts available in the same package?

A: Yes, all substitute parts use the TO-252-3 DPAK (2 Leads + Tab) package configuration, ensuring identical PCB footprint and assembly compatibility with the original L2004D5TP design.

Q: Do the substitute parts meet the same compliance requirements?

A: Yes, all substitute parts are RoHS3 compliant with MSL Level 1 (Unlimited) moisture sensitivity rating, matching the original part's compliance profile.

Q: What is the non-repetitive surge current rating for each substitute?

A: L2004D5TP, L4004D5TP, and L6004D5TP are rated for 33A and 40A (50Hz and 60Hz respectively). T405Q-600B-TR is rated for 35A and 38A (50Hz and 60Hz respectively).

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