SF5404-TR Equivalent & Substitute Parts

Part Overview

The SF5404-TR is a general-purpose rectifier diode manufactured by Vishay General Semiconductor - Diodes Division, rated for 400 V DC reverse voltage and 3 A average rectified current. This component is classified as a fast recovery diode with a reverse recovery time of 50 ns, packaged in SOD-64 axial configuration for through-hole mounting applications. The part maintains Active product status and is fully RoHS3 compliant.

Equivalent and substitute parts are identified to provide design flexibility, accommodate supply chain variations, and support applications requiring alternative packaging formats or manufacturer sources while maintaining electrical and mechanical compatibility within specified parameters.

Key Parameters

Parameter	Value	Unit
Voltage - DC Reverse (Vr) (Max)	400	V
Current - Average Rectified (Io)	3	A
Voltage - Forward (Vf) (Max) @ If	1.1	V @ 3 A
Reverse Recovery Time (trr)	50	ns
Current - Reverse Leakage @ Vr	5	µA @ 400 V
Mounting Type	Through Hole	—
Package / Case	SOD-64, Axial	—
Operating Temperature - Junction	-55 to 175	°C
RoHS Status	ROHS3 Compliant	—

Substitute Part Grouping Explanation

Substitution of the SF5404-TR is determined by the following critical electrical parameters:

Voltage Rating: All substitute parts must maintain a DC reverse voltage rating of 400 V or greater
Current Rating: All substitute parts must support 3 A average rectified current or greater
Mounting Configuration: All substitute parts must be through-hole axial diodes
Recovery Characteristics: Substitute parts may operate as either fast recovery (≤500 ns) or standard recovery (>500 ns) devices, as both are functionally compatible in general-purpose rectification applications
Compliance: All substitute parts must maintain RoHS3 compliance and REACH unaffected status

Substitute parts are grouped by manufacturer and packaging format. Packaging variations (SOD-64, DO-27, DO-201AD, DO-201AA) are mechanically compatible within through-hole axial mounting applications, though physical footprint differences must be verified for specific PCB layouts.

Parameter Comparison

Parameter	SF5404-TR (Vishay)	1N5404-G (Comchip)	1N5404G (onsemi)	1N5404RLG (onsemi)	EGP30G (onsemi)
Voltage - DC Reverse (Vr) (Max)	400 V	400 V	400 V	400 V	400 V
Current - Average Rectified (Io)	3 A	3 A	3 A	3 A	3 A
Voltage - Forward (Vf) (Max) @ If	1.1 V @ 3 A	950 mV @ 3 A	1 V @ 3 A	1 V @ 3 A	1.25 V @ 3 A
Speed Classification	Fast Recovery ≤500 ns	Standard Recovery >500 ns	Standard Recovery >500 ns	Standard Recovery >500 ns	Fast Recovery ≤500 ns
Reverse Recovery Time (trr)	50 ns	—	—	—	50 ns
Current - Reverse Leakage @ Vr	5 µA @ 400 V	5 µA @ 400 V	10 µA @ 400 V	10 µA @ 400 V	5 µA @ 400 V
Mounting Type	Through Hole	Through Hole	Through Hole	Through Hole	Through Hole
Package / Case	SOD-64, Axial	DO-201AD, Axial	DO-201AA, DO-27, Axial	DO-201AA, DO-27, Axial	DO-201AD, Axial
Operating Temperature - Junction	-55 to 175 °C	-65 to 125 °C	-65 to 150 °C	-65 to 150 °C	-65 to 150 °C
RoHS Status	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant
Product Status	Active	Active	Not For New Designs	Not For New Designs	Not For New Designs

Engineering Selection Recommendations

Primary Substitute (Active Status): The 1N5404-G manufactured by Comchip Technology is the recommended substitute for new designs. This part maintains Active product status, meets all electrical requirements at 400 V / 3 A, and is RoHS3 compliant. The forward voltage of 950 mV at 3 A is lower than the SF5404-TR, resulting in reduced power dissipation. The standard recovery classification (>500 ns) is functionally compatible with general-purpose rectification applications. Operating temperature range of -65 to 125 °C covers most industrial and commercial applications.

Secondary Substitutes (Not For New Designs): The 1N5404G, 1N5404RLG, and EGP30G from onsemi are functionally equivalent but carry "Not For New Designs" status. These parts are suitable for legacy system maintenance, repair, and replacement applications where existing designs are already qualified. The 1N5404G and 1N5404RLG are electrically identical with standard recovery characteristics and -65 to 150 °C operating range. The EGP30G offers fast recovery performance (50 ns) matching the SF5404-TR, with slightly elevated forward voltage of 1.25 V at 3 A.

Compliance Verification: All substitute parts maintain RoHS3 compliance and REACH unaffected status, ensuring regulatory compatibility with the original SF5404-TR specification.

Frequently Asked Questions (FAQ)

Q: Can the 1N5404-G replace the SF5404-TR in existing designs?

A: Yes. The 1N5404-G meets all critical electrical parameters: 400 V reverse voltage, 3 A current rating, and equivalent reverse leakage characteristics. The lower forward voltage (950 mV vs. 1.1 V) provides a performance advantage. Physical package differences (DO-201AD vs. SOD-64) require PCB footprint verification, but both are standard through-hole axial configurations.

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

A: The SF5404-TR and EGP30G are fast recovery devices with 50 ns reverse recovery time. The 1N5404-G, 1N5404G, and 1N5404RLG are standard recovery devices (>500 ns). Both types function in general-purpose rectification. Fast recovery diodes exhibit lower switching losses and are preferred in high-frequency applications. Standard recovery diodes are suitable for line-frequency and low-frequency rectification.

Q: Are the onsemi parts (1N5404G, 1N5404RLG, EGP30G) suitable for new product designs?

A: No. These parts carry "Not For New Designs" status and are intended for legacy system support and replacement applications only. For new designs, the 1N5404-G (Comchip) or SF5404-TR (Vishay) are the appropriate selections.

Q: What are the package compatibility considerations?

A: The SF5404-TR uses SOD-64 packaging. Substitute parts use DO-27, DO-201AD, or DO-201AA packaging. All are through-hole axial configurations with similar lead spacing, but physical dimensions vary. PCB footprint verification is required before substitution. Lead length and body diameter differences may affect mechanical fit in confined spaces.

Q: How do forward voltage differences affect circuit performance?

A: Forward voltage variations (950 mV to 1.25 V at 3 A) result in different power dissipation levels. Lower forward voltage (1N5404-G at 950 mV) reduces heat generation. Higher forward voltage (EGP30G at 1.25 V) increases dissipation. In most general-purpose rectification circuits, these differences are acceptable. High-current or thermally constrained applications should account for dissipation variations.

Q: What is the significance of reverse leakage current differences?

A: The SF5404-TR, 1N5404-G, and EGP30G specify 5 µA reverse leakage at 400 V. The 1N5404G and 1N5404RLG specify 10 µA. Both levels are acceptable for general-purpose rectification. Applications requiring minimal leakage current (precision analog circuits, high-impedance circuits) should prioritize the 5 µA specification.

Q: Can operating temperature range differences affect substitution decisions?

A: The SF5404-TR operates from -55 to 175 °C. Substitute parts operate from -65 to 125 °C (1N5404-G) or -65 to 150 °C (onsemi parts). For applications requiring the full -55 to 175 °C range, the SF5404-TR is the only option. Most industrial applications operate within -40 to 125 °C, where all parts are compatible.

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