L4004D6TP Equivalent & Substitute Parts

Part Overview

The L4004D6TP 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 widely used in AC switching and control applications requiring sensitive gate triggering. Substitute parts may be required due to inventory constraints, regional availability, or application-specific voltage rating requirements while maintaining compatible electrical and mechanical characteristics.

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

Substitution of the L4004D6TP is permissible with the T410-600B based on the following criteria:

Both components share identical or compatible specifications in the following critical parameters:

Triac Type: Logic - Sensitive Gate (both parts)
Current - On State (It (RMS)) (Max): 4 A (both parts)
Voltage - Gate Trigger (Vgt) (Max): 1.3 V (both parts)
Package / Case: TO-252-3, DPAK (2 Leads + Tab), SC-63 (both parts)
Mounting Type: Surface Mount (both parts)
RoHS Status: ROHS3 Compliant (both parts)

The T410-600B operates at a higher off-state voltage rating (600 V versus 400 V), which provides enhanced voltage margin in applications. The gate trigger current (Igt) and hold current (Ih) specifications differ slightly but remain within acceptable ranges for sensitive gate TRIAC applications. The operating temperature range of the T410-600B extends to 125°C, providing improved thermal performance compared to the L4004D6TP at 110°C.

Parameter Comparison

Parameter	L4004D6TP (Littelfuse)	T410-600B (STMicroelectronics)
Triac Type	Logic - Sensitive Gate	Logic - Sensitive Gate
Voltage - Off State	400 V	600 V
Current - On State (It (RMS)) (Max)	4 A	4 A
Voltage - Gate Trigger (Vgt) (Max)	1.3 V	1.3 V
Current - Gate Trigger (Igt) (Max)	5 mA	10 mA
Current - Hold (Ih) (Max)	10 mA	15 mA
Operating Temperature	-40°C ~ 110°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
Mounting Type	Surface Mount	Surface Mount
RoHS Status	ROHS3 Compliant	ROHS3 Compliant
Moisture Sensitivity Level (MSL)	1 (Unlimited)	1 (Unlimited)
REACH Status	REACH Unaffected	REACH Unaffected

Engineering Selection Recommendations

Both the L4004D6TP and T410-600B are Active products with ROHS3 compliance and REACH Unaffected status, meeting current regulatory requirements. The T410-600B is suitable as a direct substitute where the higher 600 V off-state voltage rating is acceptable or beneficial to the application. The extended operating temperature range of the T410-600B (-40°C to 125°C) provides additional thermal margin compared to the L4004D6TP. Selection between these parts should be based on application voltage requirements and thermal operating conditions. Both components maintain identical on-state current ratings, gate trigger voltage specifications, and identical package geometry, ensuring PCB layout compatibility.

Frequently Asked Questions (FAQ)

Q: Can the T410-600B replace the L4004D6TP in all applications?

A: The T410-600B is electrically compatible as a substitute where the application voltage does not exceed 600 V. The higher voltage rating of the T410-600B does not degrade performance in 400 V applications. Both parts share identical on-state current (4 A), gate trigger voltage (1.3 V maximum), and identical DPAK package geometry.

Q: What are the differences in gate trigger specifications between these parts?

A: The L4004D6TP specifies a maximum gate trigger current (Igt) of 5 mA and hold current (Ih) of 10 mA. The T410-600B specifies 10 mA and 15 mA respectively. Both values remain within sensitive gate TRIAC operating ranges and do not affect functional compatibility in standard AC switching applications.

Q: Are the packages physically identical?

A: Yes. Both the L4004D6TP and T410-600B use the TO-252-3 DPAK (2 Leads + Tab) package with SC-63 designation. Pin configuration and PCB footprint are identical, allowing direct board-level substitution without layout modifications.

Q: Do both parts meet current regulatory compliance standards?

A: Yes. Both the L4004D6TP and T410-600B are ROHS3 Compliant and REACH Unaffected, meeting current environmental and regulatory requirements for electronic components.

Q: What is the temperature operating range difference?

A: The L4004D6TP operates from -40°C to 110°C (TJ), while the T410-600B operates from -40°C to 125°C (TJ). The T410-600B provides 15°C additional upper temperature margin, beneficial in thermally demanding applications.

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