L2004D6TP TRIAC Equivalent & Substitute Parts

Part Overview

The L2004D6TP 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.

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
Moisture Sensitivity Level (MSL)	1 (Unlimited)

Substitute Part Grouping Explanation

Substitution for the L2004D6TP is determined by the following criteria:

Mandatory Compatibility Parameters:

Triac Type: Logic - Sensitive Gate
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
Package / Case: TO-252-3, DPAK (2 Leads + Tab), SC-63
Mounting Type: Surface Mount
RoHS Status: ROHS3 Compliant
Moisture Sensitivity Level (MSL): 1 (Unlimited)

Allowable Variation Parameters:

Voltage - Off State: May be equal to or greater than 200V
Current - Non Rep. Surge 50, 60Hz (Itsm): May vary within manufacturer specifications
Operating Temperature: May extend beyond -40°C ~ 110°C (TJ)

Substitute parts are grouped into two categories: Littelfuse upgrades with higher voltage ratings (L4004D6TP at 400V, L6004D6TP at 600V) and the manufacturer-recommended STMicroelectronics alternative (T405Q-600B-TR at 600V).

Parameter Comparison

Parameter	L2004D6TP	L4004D6TP	L6004D6TP	T405Q-600B-TR
Manufacturer	Littelfuse Inc.	Littelfuse Inc.	Littelfuse Inc.	STMicroelectronics
Triac Type	Logic - Sensitive Gate	Logic - Sensitive Gate	Logic - Sensitive Gate	Logic - Sensitive Gate
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 - Gate Trigger (Igt) (Max)	5 mA	5 mA	5 mA	5 mA
Current - Hold (Ih) (Max)	10 mA	10 mA	10 mA	10 mA
Current - Non Rep. Surge 50, 60Hz (Itsm)	33A, 40A	33A, 40A	33A, 40A	35A, 38A
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
Product Status	Obsolete	Active	Active	Active
RoHS Status	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant
Moisture Sensitivity Level (MSL)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)

Engineering Selection Recommendations

L4004D6TP (Littelfuse, 400V): Active product status with identical gate trigger characteristics and current ratings. Suitable for applications where 400V off-state voltage meets or exceeds circuit requirements. Maintains Littelfuse manufacturing continuity.

L6004D6TP (Littelfuse, 600V): Active product status with highest voltage rating among Littelfuse options. Recommended for designs requiring maximum voltage margin. ROHS3 and REACH compliance confirmed.

T405Q-600B-TR (STMicroelectronics, 600V): Manufacturer-recommended alternative with active product status. Extended operating temperature range (-40°C ~ 125°C) provides thermal margin. Higher non-repetitive surge current specification (35A, 38A). ROHS3 and REACH compliance confirmed. Highest inventory availability (50,300 pcs).

All substitute parts maintain identical gate trigger voltage, gate trigger current, and hold current specifications, ensuring direct functional compatibility in sensitive gate applications.

Frequently Asked Questions (FAQ)

Q: Can L4004D6TP or L6004D6TP directly replace L2004D6TP?

A: Yes. Both parts maintain identical gate trigger characteristics (Vgt 1.3V max, Igt 5mA max, Ih 10mA max) and on-state current (4A). The higher voltage ratings (400V and 600V respectively) are compatible with circuits designed for 200V operation, as they provide additional voltage margin without affecting gate drive requirements.

Q: What is the difference between L6004D6TP and T405Q-600B-TR?

A: Both are 600V, 4A Logic-Sensitive Gate TRIACs in TO-252 DPAK packages with identical gate trigger specifications. T405Q-600B-TR offers extended operating temperature range (-40°C ~ 125°C vs. -40°C ~ 110°C) and slightly higher non-repetitive surge current (35A, 38A vs. 33A, 40A). L6004D6TP maintains Littelfuse sourcing continuity.

Q: Are all substitute parts ROHS3 compliant?

A: Yes. L4004D6TP, L6004D6TP, and T405Q-600B-TR are all ROHS3 compliant with MSL 1 (Unlimited) moisture sensitivity rating, matching the original L2004D6TP specifications.

Q: Does the TO-252 DPAK package remain identical across all parts?

A: Yes. All parts use TO-252-3 DPAK (2 Leads + Tab), SC-63 package designation, ensuring PCB footprint and assembly compatibility without design modification.

Q: Why is L2004D6TP obsolete?

A: Product status reflects manufacturer discontinuation. Active alternatives with identical functional parameters are available from both Littelfuse and STMicroelectronics to support ongoing applications.

Request Quote (Ships tomorrow)

Part Number

Quantity

Company

Contact Name

E-mail

Message