L401E6AP TRIAC Equivalent & Substitute Parts

Part Overview

The L401E6AP is a Logic - Sensitive Gate TRIAC manufactured by Littelfuse Inc., designed for 400 V applications with 1 A on-state current capability in a Through Hole TO-92 package. This component is classified as Active product status with full RoHS3 compliance. Substitute parts are identified based on matching electrical specifications and mechanical compatibility to ensure direct functional replacement in circuit applications.

Key Parameters

Parameter	Value
Triac Type	Logic - Sensitive Gate
Voltage - Off State	400 V
Current - On State (It (RMS)) (Max)	1 A
Voltage - Gate Trigger (Vgt) (Max)	1.3 V
Current - Gate Trigger (Igt) (Max)	5 mA
Current - Hold (Ih) (Max)	10 mA
Current - Non Rep. Surge 50, 60Hz (Itsm)	16.7 A, 20 A
Operating Temperature Range	-65°C ~ 125°C (TJ)
Mounting Type	Through Hole
Package / Case	TO-226-3, TO-92-3 (TO-226AA) Formed Leads
RoHS Status	ROHS3 Compliant

Substitute Part Grouping Explanation

Substitution of the L401E6AP is based on strict equivalence of the following critical parameters:

Triac Type classification (Logic - Sensitive Gate)
Voltage - Off State rating (400 V)
Current - On State maximum (1 A)
Voltage - Gate Trigger maximum (1.3 V)
Current - Gate Trigger maximum (5 mA)
Current - Hold maximum (10 mA)
Surge current ratings (16.7 A, 20 A at 50, 60 Hz)
Operating temperature range (-65°C ~ 125°C)
Through Hole mounting configuration
TO-92 package compatibility
RoHS3 compliance status

The L401E5AP meets all these criteria and is classified as a parametric equivalent.

Parameter Comparison

Parameter	L401E6AP	L401E5AP
Manufacturer	Littelfuse Inc.	Littelfuse Inc.
Category	Thyristors	Thyristors
Triac Type	Logic - Sensitive Gate	Logic - Sensitive Gate
Voltage - Off State	400 V	400 V
Current - On State (It (RMS)) (Max)	1 A	1 A
Voltage - Gate Trigger (Vgt) (Max)	1.3 V	1.3 V
Current - Gate Trigger (Igt) (Max)	5 mA	5 mA
Current - Hold (Ih) (Max)	10 mA	10 mA
Current - Non Rep. Surge 50, 60Hz (Itsm)	16.7 A, 20 A	16.7 A, 20 A
Operating Temperature	-65°C ~ 125°C (TJ)	-65°C ~ 125°C (TJ)
Mounting Type	Through Hole	Through Hole
Package / Case	TO-226-3, TO-92-3 (TO-226AA) Formed Leads	TO-226-3, TO-92-3 (TO-226AA) Formed Leads
Supplier Device Package	TO-92	TO-92
RoHS Status	ROHS3 Compliant	ROHS3 Compliant
REACH Status	REACH Unaffected	REACH Unaffected
Product Status	Active	Active

Engineering Selection Recommendations

Both the L401E6AP and L401E5AP are Active status components manufactured by Littelfuse Inc. with identical electrical and mechanical specifications. Both parts maintain ROHS3 compliance and REACH Unaffected status, meeting current regulatory requirements for industrial and commercial applications. Selection between these parts may be based on inventory availability and lead time considerations, as no technical differentiation exists between them.

Frequently Asked Questions (FAQ)

Q: Can the L401E5AP be used as a direct replacement for the L401E6AP?

A: Yes. The L401E5AP is a parametric equivalent with identical electrical ratings, gate trigger characteristics, surge current handling, operating temperature range, and TO-92 package configuration.

Q: Are there any differences in RoHS or REACH compliance between these parts?

A: No. Both the L401E6AP and L401E5AP carry ROHS3 Compliant status and REACH Unaffected designation.

Q: What determines substitutability for the L401E6AP?

A: Substitutability is determined by matching the Triac Type (Logic - Sensitive Gate), voltage rating (400 V), on-state current (1 A), gate trigger voltage (1.3 V maximum), gate trigger current (5 mA maximum), hold current (10 mA maximum), surge current ratings (16.7 A, 20 A), operating temperature range (-65°C ~ 125°C), and Through Hole TO-92 package configuration.

Q: Are these parts suitable for both 50 Hz and 60 Hz applications?

A: Yes. Both parts are rated for non-repetitive surge currents at both 50 Hz (16.7 A) and 60 Hz (20 A), indicating suitability for both power line frequencies.

Q: What is the significance of the Logic - Sensitive Gate classification?

A: This classification indicates the TRIAC has a sensitive gate structure, requiring lower gate trigger current (5 mA maximum) compared to standard gate TRIACs, making it suitable for low-power gate drive circuits.

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