1N5408G Equivalent & Substitute Parts

Part Overview

The 1N5408G is a general-purpose rectifier diode rated for 1000 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 Active and complies with ROHS3 and REACH Affected standards. Equivalent and substitute parts are identified based on matching electrical specifications, mechanical compatibility, and package standardization to support component procurement flexibility and supply chain continuity.

Substiute Parts

1N5408G

SMC Diode SolutionsIn Stock: 381231N5408G Datasheet

Current PartRFQ

1N5408G

Taiwan Semiconductor CorporationIn Stock: 381711N5408G Datasheet

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1N5408G

Taiwan Semiconductor CorporationIn Stock: 381711N5408G Datasheet

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GI510-E3/54

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

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Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the 1N5408G are qualified based on the following criteria:

Electrical Compatibility:

• Voltage - DC Reverse (Vr) (Max): 1000 V minimum
• Current - Average Rectified (Io): 3 A minimum
• Current - Reverse Leakage @ Vr: 5 µA @ 1000 V maximum
• Speed: Standard Recovery >500ns, > 200mA (Io)

Mechanical Compatibility:

• Package / Case: DO-201AD, Axial
• Mounting Type: Through Hole

Regulatory & Compliance:

• RoHS Status: ROHS3 Compliant
• Moisture Sensitivity Level (MSL): 1 (Unlimited)
• ECCN: EAR99
• HTSUS: 8541.10.0080

All identified substitutes meet or exceed these parameters within the specified tolerances and maintain identical package and mounting characteristics.

Parameter Comparison

Engineering Selection Recommendations

1N5408G (Taiwan Semiconductor Corporation): This substitute maintains identical electrical ratings and package specifications to the primary 1N5408G from SMC Diode Solutions. Both parts are Active status with ROHS3 compliance and MSL 1 classification. The Taiwan Semiconductor version exhibits a lower forward voltage (1 V @ 3 A versus 1.1 V @ 3 A) and slightly reduced capacitance (25 pF versus 30 pF), resulting in marginally improved efficiency characteristics. The operating temperature range is narrower (-55°C to 150°C versus -65°C to 150°C). REACH status differs: Taiwan Semiconductor is REACH Unaffected while SMC is REACH Affected. Selection depends on supply availability and regulatory requirements specific to the application region.

GI510-E3/54 (Vishay General Semiconductor - Diodes Division): This substitute meets all core electrical and mechanical requirements with identical 1000 V reverse voltage, 3 A average rectified current, and DO-201AD axial package. The Vishay part provides additional specification detail including reverse recovery time (2 µs) and forward voltage characterization at higher current (1.1 V @ 9.4 A). Operating temperature range is -50°C to 150°C, narrower than the SMC primary part. Capacitance is 28 pF, intermediate between the two 1N5408G variants. All compliance certifications (ROHS3, MSL 1, REACH Unaffected, EAR99) are met. Inventory availability is lower (6185 Pcs versus 38100 Pcs for primary and Taiwan Semiconductor variants).

Frequently Asked Questions (FAQ)

Q: Can the 1N5408G from Taiwan Semiconductor Corporation be used as a direct replacement for the SMC Diode Solutions 1N5408G?

A: Yes. Both parts share identical part numbers, electrical ratings (1000 V, 3 A), and DO-201AD through-hole package specifications. The Taiwan Semiconductor version exhibits lower forward voltage (1 V versus 1.1 V @ 3 A) and reduced capacitance (25 pF versus 30 pF), which are favorable characteristics. The narrower operating temperature range (-55°C to 150°C versus -65°C to 150°C) must be evaluated against application requirements. REACH compliance status differs between manufacturers.

Q: Is the Vishay GI510-E3/54 compatible with the 1N5408G?

A: Yes. The GI510-E3/54 meets all electrical and mechanical compatibility criteria: 1000 V reverse voltage, 3 A average rectified current, standard recovery speed, and DO-201AD axial through-hole package. Forward voltage and capacitance specifications are within acceptable ranges. The primary consideration is the narrower operating temperature range (-50°C to 150°C) and lower inventory availability (6185 Pcs).

Q: What are the key electrical parameters that determine substitution eligibility?

A: Substitution eligibility is determined by: (1) Voltage - DC Reverse (Vr) (Max) of 1000 V or greater, (2) Current - Average Rectified (Io) of 3 A or greater, (3) Current - Reverse Leakage @ Vr of 5 µA @ 1000 V or lower, and (4) Standard Recovery speed classification >500ns, > 200mA (Io). All identified substitutes meet these criteria.

Q: Are all substitute parts in the same package?

A: Yes. All parts—1N5408G (SMC), 1N5408G (Taiwan Semiconductor), and GI510-E3/54 (Vishay)—use the DO-201AD axial through-hole package. Mechanical compatibility and PCB layout requirements are identical.

Q: What compliance certifications apply to all substitute parts?

A: All substitute parts are ROHS3 Compliant, classified as MSL 1 (Unlimited moisture sensitivity level), assigned ECCN EAR99, and HTSUS 8541.10.0080. REACH status varies: SMC is REACH Affected; Taiwan Semiconductor and Vishay are REACH Unaffected. All parts are Active status.

Q: How do forward voltage differences affect circuit performance?

A: Forward voltage differences between parts are minor (1 V to 1.1 V @ 3 A). In rectifier applications, this translates to approximately 0.1 V variation in voltage drop across the diode. Circuit designs with adequate margin accommodate this variation without performance degradation. Applications with tight voltage regulation requirements should evaluate the specific forward voltage characteristic of the selected substitute.

Q: What is the significance of capacitance variation among substitutes?

A: Capacitance values range from 25 pF to 30 pF @ 4V, 1MHz. This variation is negligible in most rectifier applications. High-frequency switching circuits or precision timing applications may require evaluation of the specific capacitance value, but standard rectification circuits are unaffected by this range.