1N5401 Equivalent & Substitute Parts

Part Overview

The 1N5401 is a general-purpose rectifier diode rated for 100 V DC reverse voltage and 3 A average rectified current in a through-hole DO-201AD axial package. This component is classified as obsolete by the original manufacturer (onsemi), necessitating identification of equivalent and substitute parts for ongoing production and maintenance applications. Equivalent parts maintain identical electrical and mechanical specifications, while substitute parts provide functional compatibility within defined parameter tolerances.

Key Parameters

Parameter	Value	Unit
Voltage - DC Reverse (Vr) (Max)	100	V
Current - Average Rectified (Io)	3	A
Voltage - Forward (Vf) (Max) @ If	1.2 V @ 3 A	V
Speed	Standard Recovery >500ns, > 200mA (Io)	—
Current - Reverse Leakage @ Vr	5	µA @ 100 V
Mounting Type	Through Hole	—
Package / Case	DO-201AD, Axial	—
Operating Temperature - Junction	-55°C ~ 150°C	—

Substitute Part Grouping Explanation

Substitution of the 1N5401 is determined by strict equivalence in the following electrical and mechanical parameters:

Primary Substitution Criteria:

Voltage - DC Reverse (Vr) (Max): 100 V
Current - Average Rectified (Io): 3 A
Mounting Type: Through Hole
Package / Case: DO-201AD or compatible axial package

Secondary Compatibility Factors:

Voltage - Forward (Vf) (Max) @ If: Within 1.2 V @ 3 A specification
Current - Reverse Leakage @ Vr: 5 µA @ 100 V or lower
Operating Temperature - Junction: Minimum -55°C to 150°C

Parts are classified as direct equivalents when all primary criteria and secondary factors align. Parts with identical voltage and current ratings but different package designations (DO-201AA, DO-27, B axial) are classified as similar substitutes. Parts with reduced current ratings (2.5 A) are not suitable for direct substitution.

Parameter Comparison

Part Number	Manufacturer	Vr (Max) [V]	Io [A]	Vf (Max) @ If [V]	Speed	Ir @ Vr [µA]	Package	Product Status
1N5401	onsemi	100	3	1.2 @ 3 A	Standard >500ns	5 @ 100 V	DO-201AD	Obsolete
1N5401G	Good-Ark Semiconductor	100	3	1.1 @ 3 A	Standard >500ns	5 @ 100 V	DO-201AD	Active
1N5401RLG	onsemi	100	3	1.0 @ 3 A	Standard >500ns	10 @ 100 V	DO-201AA	Not For New Designs
EGP30B	Fairchild Semiconductor	100	3	0.95 @ 3 A	Fast ≤500ns	5 @ 100 V	DO-201AD	Active
1N5186	Microchip Technology	100	3	1.5 @ 9 A	Fast ≤500ns	2 @ 100 V	B, Axial	Active
1N5401-E3/54	Vishay General Semiconductor	100	3	1.2 @ 3 A	Standard >500ns	5 @ 100 V	DO-201AD	Active
1N5401G-T	Diodes Incorporated	100	3	1.1 @ 3 A	Standard >500ns	5 @ 100 V	DO-201AD	Active
1N5401GP-AP	Micro Commercial Co	100	3	1.1 @ 3 A	Standard >500ns	5 @ 100 V	DO-201AD	Active
1N5416	Microchip Technology	100	3	1.5 @ 9 A	Fast ≤500ns	1 @ 100 V	B, Axial	Active
1N5804	Solid State Inc.	100	2.5	0.875 @ 1 A	Fast ≤500ns	1 @ 100 V	DO-204AP	Active

Engineering Selection Recommendations

Direct Equivalents (Recommended Primary Substitutes):

1N5401-E3/54 (Vishay General Semiconductor) and 1N5401G (Good-Ark Semiconductor) are direct electrical equivalents with identical voltage and current ratings, standard recovery speed, and DO-201AD packaging. Both parts are in active production status with RoHS3 compliance. 1N5401-E3/54 offers the largest inventory (62,000 units) and is recommended for high-volume applications.

1N5401G-T (Diodes Incorporated) and 1N5401GP-AP (Micro Commercial Co) provide equivalent electrical performance with active product status and RoHS3 compliance. These parts are suitable for applications requiring standard recovery characteristics.

Similar Substitutes (Package or Performance Variants):

1N5401RLG (onsemi) maintains identical voltage and current specifications but uses DO-201AA packaging and carries "Not For New Designs" status. This part is suitable only for legacy system maintenance where package compatibility is confirmed.

EGP30B (Fairchild Semiconductor) provides identical voltage and current ratings with fast recovery characteristics (≤500ns) and lower forward voltage (0.95 V @ 3 A). This part is suitable for applications where reduced switching losses are beneficial, provided circuit design accommodates fast recovery behavior.

1N5186 and 1N5416 (Microchip Technology) maintain 100 V / 3 A ratings with fast recovery and B axial packaging. These parts are suitable for applications where package form factor compatibility is confirmed and fast recovery characteristics are acceptable.

Not Recommended:

1N5804 (Solid State Inc.) has reduced current rating (2.5 A) and different package (DO-204AP). This part does not meet the 3 A current requirement and is not suitable for direct substitution.

Frequently Asked Questions (FAQ)

Q: Can 1N5401G be used as a direct replacement for 1N5401?

A: Yes. 1N5401G maintains identical voltage (100 V), current (3 A), forward voltage (1.1 V @ 3 A), and package (DO-201AD) specifications. The part is in active production with RoHS3 compliance.

Q: What is the difference between standard and fast recovery diodes in this family?

A: Standard recovery diodes (1N5401, 1N5401G, 1N5401-E3/54) have recovery times >500 ns. Fast recovery diodes (EGP30B, 1N5186, 1N5416) have recovery times ≤500 ns. Fast recovery diodes generate less switching noise and heat but may require circuit design verification for compatibility.

Q: Can 1N5804 replace 1N5401?

A: No. 1N5804 has a reduced current rating of 2.5 A versus the 3 A requirement of 1N5401. Additionally, 1N5804 uses DO-204AP packaging instead of DO-201AD. This part is not suitable for direct substitution.

Q: Are there packaging differences between substitute parts?

A: Yes. Most direct equivalents use DO-201AD packaging. 1N5401RLG uses DO-201AA, and 1N5186 and 1N5416 use B axial packaging. All are through-hole axial components, but physical dimensions may differ. Verify PCB layout compatibility before substitution.

Q: What is the significance of "Not For New Designs" status?

A: Parts marked "Not For New Designs" (such as 1N5401RLG) are in limited production and may have restricted availability. These parts are suitable for maintenance and repair of existing systems but should not be selected for new product development.

Q: Which substitute part has the best availability?

A: 1N5401-E3/54 (Vishay General Semiconductor) has the highest inventory at 62,000 units and is recommended for applications requiring assured supply.

Q: Can I use a fast recovery diode (EGP30B) in place of a standard recovery diode (1N5401)?

A: Fast recovery diodes are electrically compatible with standard recovery applications. However, the faster switching characteristics may introduce different EMI behavior. Verify circuit performance through testing if EMI sensitivity is a design concern.

Q: What compliance certifications apply to substitute parts?

A: All active substitute parts listed (1N5401G, 1N5401-E3/54, 1N5401G-T, 1N5401GP-AP, EGP30B, 1N5186, 1N5416) carry RoHS3 compliance. All parts are REACH Unaffected and classified as EAR99 for export control purposes.

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