1N5408 Equivalent & Substitute Parts

Part Overview

The 1N5408 is a general-purpose rectifier diode manufactured by SMC Diode Solutions, rated for 1000 V DC reverse voltage and 3 A average rectified current in a DO-201AD axial through-hole package. This component is classified as obsolete, making equivalent substitute parts necessary for new designs and ongoing production requirements. The 1N5408 operates across a junction temperature range of -65°C to 175°C and features standard recovery characteristics typical of general-purpose rectifier applications.

Substiute Parts

1N5408

SMC Diode SolutionsIn Stock: 412121N5408 Datasheet

Current PartRFQ

GI510-E3/54

Vishay General Semiconductor - Diodes DivisionIn Stock: 6202GI510-E3/54 Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the 1N5408 are identified based on electrical and mechanical parameter equivalence. The primary substitution criteria are:

Critical Matching Parameters:

• Voltage - DC Reverse (Vr) (Max): 1000 V
• Current - Average Rectified (Io): 3 A
• Package / Case: DO-201AD, Axial
• Mounting Type: Through Hole
• Speed Classification: Standard Recovery >500ns, > 200mA (Io)
• Current - Reverse Leakage @ Vr: 5 µA @ 1000 V

Parts meeting all critical parameters are classified as direct electrical and mechanical equivalents. The GI510-E3/54 from Vishay General Semiconductor - Diodes Division satisfies all substitution criteria, providing functional interchangeability in applications requiring 1000 V, 3 A rectifier diodes in DO-201AD packages.

Parameter Comparison

Engineering Selection Recommendations

The GI510-E3/54 is an active product with ROHS3 compliance and REACH unaffected status, providing regulatory advantages over the obsolete 1N5408. Both components share identical electrical ratings for reverse voltage, average rectified current, and reverse leakage characteristics. The GI510-E3/54 operates within a narrower junction temperature range (-50°C to 150°C versus -65°C to 175°C), which is suitable for standard industrial and commercial applications but may require thermal evaluation for extreme temperature environments.

The forward voltage specification for the GI510-E3/54 is provided at a different test condition (1.1 V @ 9.4 A) compared to the 1N5408 (1.2 V @ 3 A), indicating comparable forward conduction characteristics. Both diodes employ standard recovery technology and are packaged identically in DO-201AD axial format, ensuring direct mechanical interchangeability on printed circuit boards.

Selection of the GI510-E3/54 as a substitute is supported by active product status, regulatory compliance certifications, and electrical parameter equivalence across all critical specifications.

Frequently Asked Questions (FAQ)

Q: Can the GI510-E3/54 be used as a direct replacement for the 1N5408 in existing designs?

A: Yes. The GI510-E3/54 meets all critical electrical parameters: 1000 V reverse voltage, 3 A average rectified current, 5 µA reverse leakage at 1000 V, and standard recovery speed classification. Both components use identical DO-201AD axial packages with through-hole mounting, enabling direct PCB substitution without layout modifications.

Q: What is the difference in operating temperature ranges between these parts?

A: The 1N5408 operates from -65°C to 175°C junction temperature, while the GI510-E3/54 operates from -50°C to 150°C. For applications requiring operation below -50°C or above 150°C, thermal analysis is necessary to confirm the GI510-E3/54 remains within acceptable performance limits.

Q: Are the forward voltage specifications equivalent?

A: The forward voltage specifications are provided at different test conditions. The 1N5408 specifies 1.2 V @ 3 A, while the GI510-E3/54 specifies 1.1 V @ 9.4 A. Both values indicate comparable forward conduction behavior for general-purpose rectifier applications. Circuit designers should verify forward voltage drop against specific application requirements.

Q: What packaging differences exist between these diodes?

A: Both the 1N5408 and GI510-E3/54 are supplied in DO-201AD axial through-hole packages. The primary packaging difference is the supplier format: the 1N5408 is available in standard packaging, while the GI510-E3/54 is supplied in cut tape (CT) format. This does not affect electrical performance or mechanical compatibility.

Q: Why is the 1N5408 classified as obsolete?

A: The 1N5408 is listed as obsolete by SMC Diode Solutions. The GI510-E3/54 from Vishay is an active product with current manufacturing support, regulatory compliance certifications (ROHS3), and ongoing availability, making it the preferred choice for new designs and production continuity.

Q: Are there any compliance or regulatory differences?

A: The GI510-E3/54 carries ROHS3 compliance certification, indicating conformance to Restriction of Hazardous Substances directives. Both components are REACH unaffected and classified under ECCN EAR99 with identical HTSUS codes (8541.10.0080), indicating equivalent regulatory treatment for export and trade purposes.