1N5400 General Purpose Rectifier Diode Equivalent & Substitute Parts

Part Overview

The 1N5400 is a general purpose rectifier diode rated for 50 V DC reverse voltage and 3 A average rectified current in a DO-201AD axial through-hole package. This part is classified as obsolete by the original manufacturer (SMC Diode Solutions), necessitating identification of active equivalent and substitute components for ongoing design support and procurement.

Key Parameters

Parameter	Value	Unit
Voltage - DC Reverse (Vr) (Max)	50	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 @ 50 V
Mounting Type	Through Hole	—
Package / Case	DO-201AD, Axial	—
Operating Temperature - Junction	-65°C ~ 175°C	—

Substitute Part Grouping Explanation

Substitution of the 1N5400 is determined by strict equivalence across the following electrical and mechanical parameters:

Primary Substitution Criteria:

Voltage - DC Reverse (Vr) (Max): 50 V minimum
Current - Average Rectified (Io): 3 A minimum
Package / Case: DO-201AD, Axial (through-hole mounting)
Current - Reverse Leakage @ Vr: 5 µA @ 50 V maximum

Secondary Compatibility Factors:

Voltage - Forward (Vf) (Max) @ If: Within acceptable operating range
Speed Classification: Standard or Fast Recovery acceptable
Operating Temperature Range: Must accommodate application requirements
Moisture Sensitivity Level (MSL): 1 (Unlimited) for all candidates

All substitute parts listed meet or exceed the primary electrical specifications and maintain identical package geometry, ensuring direct mechanical and electrical compatibility in existing circuit designs.

Parameter Comparison

Parameter	1N5400 (SMC)	1N5400G (TSC)	1N5400G-T (Diodes Inc.)	FR301G A0G (TSC)	GI500-E3/54 (Vishay)
Manufacturer	SMC Diode Solutions	Taiwan Semiconductor Corporation	Diodes Incorporated	Taiwan Semiconductor Corporation	Vishay General Semiconductor
Product Status	Obsolete	Active	Active	Active	Active
Voltage - DC Reverse (Vr) (Max)	50 V	50 V	50 V	50 V	50 V
Current - Average Rectified (Io)	3 A	3 A	3 A	3 A	3 A
Voltage - Forward (Vf) (Max) @ If	1.2 V @ 3 A	1.1 V @ 3 A	1.1 V @ 3 A	1.3 V @ 3 A	1.1 V @ 9.4 A
Speed	Standard Recovery >500ns, > 200mA (Io)	Standard Recovery >500ns, > 200mA (Io)	Standard Recovery >500ns, > 200mA (Io)	Fast Recovery =< 500ns, > 200mA (Io)	Standard Recovery >500ns, > 200mA (Io)
Current - Reverse Leakage @ Vr	5 µA @ 50 V	5 µA @ 50 V	5 µA @ 50 V	5 µA @ 50 V	5 µA @ 50 V
Capacitance @ Vr, F	30 pF @ 0V, 1MHz	25 pF @ 4V, 1MHz	40 pF @ 4V, 1MHz	30 pF @ 4V, 1MHz	28 pF @ 4V, 1MHz
Mounting Type	Through Hole	Through Hole	Through Hole	Through Hole	Through Hole
Package / Case	DO-201AD, Axial	DO-201AD, Axial	DO-201AD, Axial	DO-201AD, Axial	DO-201AD, Axial
Operating Temperature - Junction	-65°C ~ 175°C	-55°C ~ 150°C	-65°C ~ 150°C	-55°C ~ 150°C	-50°C ~ 150°C
RoHS Status	Not specified	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant
Moisture Sensitivity Level (MSL)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)
REACH Status	REACH Unaffected	REACH Unaffected	REACH Unaffected	REACH Unaffected	REACH Unaffected

Engineering Selection Recommendations

1N5400G (Taiwan Semiconductor Corporation)

This part is an active equivalent offering identical electrical specifications to the original 1N5400. Forward voltage is reduced to 1.1 V at 3 A, providing improved efficiency. The part carries ROHS3 compliance and maintains unlimited moisture sensitivity rating. Operating temperature range is -55°C to 150°C, which is narrower than the original but suitable for most industrial applications. This is the primary direct replacement for obsolete stock.

1N5400G-T (Diodes Incorporated)

This variant is supplied in Cut Tape (CT) packaging and is actively produced. Electrical characteristics match the 1N5400G with 1.1 V forward voltage at 3 A. Reverse recovery time is specified at 2 µs. Operating temperature range extends to -65°C at the lower limit, matching the original part's lower temperature specification. ROHS3 compliance is confirmed. This option is suitable for applications requiring extended low-temperature operation.

FR301G A0G (Taiwan Semiconductor Corporation)

This part represents a fast recovery variant with recovery time of 150 ns, compared to standard recovery >500 ns in the original. Forward voltage is 1.3 V at 3 A, which is 0.1 V higher than the original specification. Operating temperature range is -55°C to 150°C. This substitute is applicable in high-frequency switching applications where fast recovery characteristics provide circuit performance benefits. ROHS3 compliance is confirmed.

GI500-E3/54 (Vishay General Semiconductor - Diodes Division)

This part is supplied in Tape & Reel (TR) packaging and is actively produced. Forward voltage specification is 1.1 V at 9.4 A, indicating higher current capability. Reverse recovery time is 2 µs. Operating temperature range is -50°C to 150°C. ROHS3 compliance is confirmed. This option is suitable for high-volume production environments requiring tape and reel packaging.

Frequently Asked Questions (FAQ)

Q: Can the 1N5400G directly replace the obsolete 1N5400 in existing designs?

A: Yes. The 1N5400G maintains identical voltage and current ratings (50 V, 3 A), reverse leakage current (5 µA @ 50 V), and DO-201AD axial package geometry. Forward voltage is reduced from 1.2 V to 1.1 V at 3 A, which improves efficiency without affecting circuit compatibility.

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

A: The FR301G A0G offers fast recovery with 150 ns recovery time, compared to >500 ns for standard recovery types. Fast recovery reduces switching losses in high-frequency applications. The trade-off is slightly higher forward voltage (1.3 V vs. 1.1-1.2 V). Selection depends on circuit operating frequency requirements.

Q: Are all substitute parts RoHS compliant?

A: Yes. All active substitute parts listed (1N5400G, 1N5400G-T, FR301G A0G, GI500-E3/54) carry ROHS3 compliance certification. The original 1N5400 does not specify RoHS status.

Q: What packaging options are available?

A: Most substitutes are supplied in standard packaging. The 1N5400G-T is available in Cut Tape (CT) format. The GI500-E3/54 is supplied in Tape & Reel (TR) format for high-volume production. All maintain the DO-201AD axial through-hole package for direct mechanical compatibility.

Q: Which substitute is recommended for low-temperature applications below -55°C?

A: The 1N5400G-T extends the lower operating temperature limit to -65°C, matching the original 1N5400 specification. This part is suitable for applications requiring operation at temperatures below -55°C.

Q: Are there inventory considerations for selecting a substitute?

A: Current inventory levels vary by part number. The 1N5400G-T (Diodes Incorporated) has the highest inventory at 5,900 pieces. The 1N5400G (Taiwan Semiconductor Corporation) has 1,855 pieces available. Selection should account for procurement lead times and volume requirements.

Q: Can the GI500-E3/54 be used in applications designed for the 1N5400?

A: Yes. The GI500-E3/54 meets all primary electrical specifications (50 V, 3 A, 5 µA reverse leakage). Forward voltage is 1.1 V at 9.4 A, which is compatible with 1N5400 circuit designs. The primary difference is tape and reel packaging, suitable for automated assembly environments.

Q: What is the moisture sensitivity level for all substitute parts?

A: All substitute parts carry MSL 1 (Unlimited) rating, indicating no moisture sensitivity restrictions. Storage and handling do not require special moisture control measures.

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