1N5402 Equivalent & Substitute Parts

Part Overview

The 1N5402 is a general-purpose rectifier diode rated for 200 V DC reverse voltage and 3 A average rectified current in a DO-201AD axial through-hole package. Manufactured by SMC Diode Solutions, this component is classified as obsolete, necessitating identification of active equivalent alternatives for new designs and ongoing production requirements. Substitute parts must maintain electrical compatibility across voltage, current, and thermal specifications while accommodating packaging and sourcing constraints.

Key Parameters

Parameter	Value	Unit
Voltage - DC Reverse (Vr) (Max)	200	V
Current - Average Rectified (Io)	3	A
Voltage - Forward (Vf) (Max) @ If	1.2 V @ 3 A	V
Current - Reverse Leakage @ Vr	5	µA @ 200 V
Speed	Standard Recovery >500ns, > 200mA (Io)	—
Package / Case	DO-201AD, Axial	—
Mounting Type	Through Hole	—
Operating Temperature - Junction	-65°C ~ 175°C	—

Substitute Part Grouping Explanation

Substitution eligibility for the 1N5402 is determined by the following critical parameters:

Mandatory Compatibility Criteria:

Voltage - DC Reverse (Vr) (Max): 200 V minimum
Current - Average Rectified (Io): 3 A minimum
Package / Case: DO-201AD, Axial
Mounting Type: Through Hole
Current - Reverse Leakage @ Vr: 5 µA @ 200 V maximum

Secondary Compatibility Parameters:

Voltage - Forward (Vf) (Max) @ If: Must not exceed application forward voltage requirements
Operating Temperature - Junction: Must encompass application operating range
Speed: Standard or Fast Recovery acceptable for general-purpose applications

Substitute parts are grouped into two categories:

Category A - Direct Electrical Equivalents (3 A Rating): Parts maintaining the 3 A average rectified current specification with identical or superior electrical characteristics.

Category B - Upgraded Electrical Equivalents (4 A Rating): Parts exceeding the 3 A specification with enhanced current capacity, suitable for applications requiring additional margin or higher current handling.

Parameter Comparison

Part Number	Manufacturer	Vr (Max) [V]	Io [A]	Vf (Max) @ If [V]	Reverse Leakage @ Vr [µA]	Speed	Tj (Operating) [°C]	Product Status
1N5402	SMC Diode Solutions	200	3	1.2 @ 3 A	5 @ 200 V	Standard Recovery >500ns	-65 ~ 175	Obsolete
1N5402G	Taiwan Semiconductor Corporation	200	3	1.0 @ 3 A	5 @ 200 V	Standard Recovery >500ns	-55 ~ 150	Active
BY251P-E3/73	Vishay General Semiconductor - Diodes Division	200	3	1.1 @ 3 A	5 @ 200 V	Standard Recovery >500ns	-55 ~ 150	Active
FR303G B0G	Taiwan Semiconductor Corporation	200	3	1.3 @ 3 A	5 @ 200 V	Fast Recovery ≤500ns	-55 ~ 150	Active
MUR420-M3/73	Vishay General Semiconductor - Diodes Division	200	4	0.89 @ 4 A	5 @ 200 V	Fast Recovery ≤500ns	-65 ~ 175	Active

Engineering Selection Recommendations

1N5402G (Taiwan Semiconductor Corporation)

The 1N5402G is an active equivalent offering direct electrical substitution with identical voltage and current ratings. Forward voltage is reduced to 1.0 V at 3 A, providing improved efficiency. Operating temperature range is -55°C to 150°C, which is narrower than the original part. This part is RoHS3 compliant and REACH unaffected. Packaging is Tape & Reel (TR), suitable for automated assembly. Inventory availability is 2110 pieces.

BY251P-E3/73 (Vishay General Semiconductor - Diodes Division)

The BY251P-E3/73 maintains 3 A current rating with 200 V reverse voltage specification. Forward voltage is 1.1 V at 3 A. Operating temperature range is -55°C to 150°C. This part is RoHS3 compliant and REACH unaffected. Reverse recovery time is specified at 3 µs. Inventory availability is 1063 pieces.

FR303G B0G (Taiwan Semiconductor Corporation)

The FR303G B0G provides 3 A current capacity with fast recovery characteristics (150 ns reverse recovery time). Forward voltage is 1.3 V at 3 A. Operating temperature range is -55°C to 150°C. This part is RoHS3 compliant and REACH unaffected. Fast recovery technology is suitable for applications requiring reduced switching losses. Inventory availability is 806 pieces.

MUR420-M3/73 (Vishay General Semiconductor - Diodes Division)

The MUR420-M3/73 is an upgraded equivalent with 4 A average rectified current, exceeding the original 3 A specification. Reverse voltage is maintained at 200 V. Forward voltage is 0.89 V at 4 A, providing superior efficiency. Operating temperature range is -65°C to 175°C, matching the original part's thermal envelope. Fast recovery technology (35 ns reverse recovery time) is included. This part is RoHS3 compliant and REACH unaffected. Inventory availability is 794 pieces.

Frequently Asked Questions (FAQ)

Q: Can the 1N5402G be used as a direct replacement for the 1N5402?

A: Yes. The 1N5402G maintains identical voltage (200 V) and current (3 A) ratings in the same DO-201AD package. Forward voltage is lower (1.0 V vs. 1.2 V), which is advantageous. The operating temperature range is narrower (-55°C to 150°C vs. -65°C to 175°C), which must be verified against application requirements.

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

A: Standard recovery diodes have reverse recovery times exceeding 500 ns, while fast recovery diodes have reverse recovery times of 500 ns or less. The 1N5402 specifies standard recovery. Substitute parts FR303G B0G and MUR420-M3/73 offer fast recovery characteristics, which reduce switching losses in high-frequency applications but are not required for general-purpose rectification.

Q: Is the MUR420-M3/73 suitable for applications designed for 3 A operation?

A: Yes. The MUR420-M3/73 is rated for 4 A average rectified current, which exceeds the 3 A requirement. This provides additional current margin and is electrically compatible. The part maintains 200 V reverse voltage and operates within -65°C to 175°C, matching the original thermal specification.

Q: What packaging differences exist among the substitute parts?

A: All substitute parts use the DO-201AD axial through-hole package, maintaining mechanical compatibility. The 1N5402G is supplied in Tape & Reel (TR) packaging for automated assembly, while other parts are supplied in standard packaging. Package selection depends on assembly process requirements.

Q: Are all substitute parts RoHS3 compliant?

A: Yes. All active substitute parts listed (1N5402G, BY251P-E3/73, FR303G B0G, and MUR420-M3/73) are RoHS3 compliant and REACH unaffected, meeting current environmental and regulatory requirements.

Q: Which substitute part offers the lowest forward voltage?

A: The MUR420-M3/73 offers the lowest forward voltage at 0.89 V at 4 A, followed by the 1N5402G at 1.0 V at 3 A. Lower forward voltage reduces power dissipation and heat generation in rectification circuits.

Q: Can the 1N5402 be replaced with a part rated for lower current?

A: No. Substitute parts must maintain or exceed the 3 A average rectified current specification. Using a lower-rated part creates risk of thermal stress and component failure.

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