L2004D3RP Equivalent & Substitute Parts

Part Overview

The L2004D3RP is a Logic - Sensitive Gate TRIAC manufactured by Littelfuse Inc., rated for 200 V off-state voltage and 4 A on-state current in a Surface Mount TO-252 (DPAK) package. This part is classified as Obsolete, making identification of equivalent and substitute components essential for ongoing design support and production continuity. Substitute parts in this category maintain identical or superior electrical characteristics while offering improved availability and active product status.

Key Parameters

Parameter	L2004D3RP
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)	3 mA
Current - Hold (Ih) (Max)	5 mA
Current - Non Rep. Surge 50, 60Hz (Itsm)	33 A, 40 A
Operating Temperature Range	-40°C to 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

Substitute parts for the L2004D3RP are selected based on the following criteria:

Mandatory Compatibility Parameters:

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

Voltage Rating Substitution Logic: Substitute parts may have equal or higher off-state voltage ratings. A higher voltage rating maintains backward compatibility in applications where the L2004D3RP operates below its maximum voltage specification. The L4004D3RP (400 V) and L6004D3RP (600 V) both exceed the 200 V requirement and are therefore suitable substitutes.

Parameter Comparison

Parameter	L2004D3RP	L4004D3RP	L6004D3RP
Voltage - Off State	200 V	400 V	600 V
Current - On State (It (RMS)) (Max)	4 A	4 A	4 A
Voltage - Gate Trigger (Vgt) (Max)	1.3 V	1.3 V	1.3 V
Current - Gate Trigger (Igt) (Max)	3 mA	3 mA	3 mA
Current - Hold (Ih) (Max)	5 mA	5 mA	5 mA
Current - Non Rep. Surge 50, 60Hz (Itsm)	33 A, 40 A	33 A, 40 A	33 A, 40 A
Operating Temperature Range	-40°C to 110°C (TJ)	-40°C to 110°C (TJ)	-40°C to 110°C (TJ)
Package / Case	TO-252-3, DPAK	TO-252-3, DPAK	TO-252-3, DPAK
Mounting Type	Surface Mount	Surface Mount	Surface Mount
RoHS Status	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant
Moisture Sensitivity Level (MSL)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)
Product Status	Obsolete	Active	Active

Engineering Selection Recommendations

L4004D3RP (400 V Rating): This part is suitable for applications where the L2004D3RP operates at or below 200 V. The 400 V rating provides additional voltage margin. Product status is Active with 2822 units in stock. ROHS3 compliance and MSL 1 rating are maintained. REACH Unaffected status is confirmed.

L6004D3RP (600 V Rating): This part is suitable for applications where the L2004D3RP operates at or below 200 V. The 600 V rating provides maximum voltage margin for designs with potential overvoltage conditions. Product status is Active with 4165 units in stock. ROHS3 compliance and MSL 1 rating are maintained. REACH Unaffected status is confirmed.

Both substitute parts maintain identical gate trigger characteristics, hold current specifications, and thermal operating range, ensuring functional compatibility in existing circuit designs.

Frequently Asked Questions (FAQ)

Q: Can L4004D3RP or L6004D3RP be used as direct replacements for L2004D3RP?

A: Yes, both parts are direct replacements when the application voltage does not exceed 200 V. The higher voltage ratings of the substitute parts do not affect performance in lower-voltage circuits. All gate trigger and current specifications are identical.

Q: What is the difference between the three parts?

A: The primary difference is the off-state voltage rating: L2004D3RP (200 V), L4004D3RP (400 V), and L6004D3RP (600 V). All other electrical and mechanical parameters are identical. The higher voltage rating provides greater design margin but does not change switching behavior or gate sensitivity.

Q: Are the packages identical?

A: Yes. All three parts use the TO-252-3 DPAK package with identical pinout and footprint. No PCB layout changes are required for substitution.

Q: Why is L2004D3RP obsolete?

A: The L2004D3RP is classified as Obsolete by the manufacturer. L4004D3RP and L6004D3RP are Active products with confirmed ongoing availability, making them preferred choices for new designs and production continuity.

Q: Are there compliance differences between the parts?

A: No. All three parts are ROHS3 Compliant with MSL 1 (Unlimited) rating. L4004D3RP and L6004D3RP both have confirmed REACH Unaffected status.

Q: Which substitute should I select?

A: Selection depends on application voltage requirements. For applications operating at or below 200 V, either L4004D3RP or L6004D3RP is acceptable. L6004D3RP provides the highest voltage margin. Both are in active production with adequate inventory.

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