1N462A Equivalent & Substitute Parts

Part Overview

The 1N462A is a general-purpose rectifier diode manufactured by onsemi in a DO-35 through-hole package. This component is classified as obsolete, indicating it is no longer in active production. Due to its obsolete status, equivalent substitute parts are necessary for new designs, repairs, and ongoing production requirements. The 1N462A operates as a standard recovery diode suitable for general rectification applications in through-hole configurations.

Substiute Parts

1N462A

onsemiIn Stock: 7241N462A Datasheet

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1N4148TR

Fairchild SemiconductorIn Stock: 2404251N4148TR Datasheet

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1N6263

STMicroelectronicsIn Stock: 32191N6263 Datasheet

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BAV18-TR

Vishay General Semiconductor - Diodes DivisionIn Stock: 709BAV18-TR Datasheet

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Key Parameters

Substitute Part Grouping Explanation

Substitution for the 1N462A is determined by the following critical parameters:

Package Compatibility: All substitute parts must use the DO-35 through-hole axial package (DO-204AH designation) to ensure mechanical and electrical compatibility with existing PCB layouts and component footprints.

Mounting Type: Through-hole mounting is mandatory for direct substitution, maintaining compatibility with legacy circuit designs.

Technology Classification: The 1N462A operates as a standard recovery diode. Substitute parts may include standard recovery or small-signal diode technologies, provided they maintain functional equivalence in rectification applications.

Speed Characteristics: The 1N462A specifies standard recovery with >500ns recovery time at currents greater than 200mA. Substitute parts with equal or faster recovery characteristics are acceptable.

Regulatory Compliance: All substitute parts must maintain REACH Unaffected status and EAR99 ECCN classification to ensure compliance with the original component's regulatory framework.

The three substitute parts identified—1N4148TR, 1N6263, and BAV18-TR—meet these core substitution criteria while offering active product status and enhanced availability.

Parameter Comparison

Engineering Selection Recommendations

1N4148TR (Fairchild Semiconductor): This substitute provides the highest voltage rating at 100 V with 200mA current capacity. It is classified as active product status with ROHS3 compliance. The 1N4148TR operates as a small-signal diode with fast switching characteristics, making it suitable for applications requiring higher reverse voltage tolerance than the original 1N462A. This part is recommended for designs where voltage headroom is a primary concern.

1N6263 (STMicroelectronics): This Schottky diode substitute operates at 60 V with 15mA current capacity. It maintains active product status and ROHS3 compliance with MSL 1 rating. The Schottky technology provides lower forward voltage drop characteristics compared to standard recovery diodes. This part is suitable for low-current applications where forward voltage efficiency is critical.

BAV18-TR (Vishay General Semiconductor): This substitute offers the highest current capacity at 250mA with a 50 V reverse voltage rating. It features fast recovery characteristics (≤500ns) matching the speed profile of the original 1N462A. The BAV18-TR includes AEC-Q101 automotive qualification and ROHS3 compliance. This part is recommended for applications requiring higher current handling and automotive-grade reliability.

All three substitutes maintain REACH Unaffected status and EAR99 ECCN classification, ensuring regulatory equivalence with the original 1N462A.

Frequently Asked Questions (FAQ)

Q: Can the 1N4148TR directly replace the 1N462A in all applications?

A: The 1N4148TR shares the DO-35 through-hole package and axial configuration with the 1N462A. However, the 1N4148TR is classified as a small-signal diode with different speed characteristics. Substitution is valid for applications where the higher voltage rating (100 V) and small-signal speed profile do not conflict with circuit requirements.

Q: What is the primary difference between the 1N6263 and the other substitutes?

A: The 1N6263 uses Schottky technology rather than standard recovery technology. Schottky diodes exhibit lower forward voltage drops and faster switching, but operate at lower voltage and current ratings (60 V, 15mA). This part is suitable only for low-current applications where its efficiency advantages are beneficial.

Q: Why is the BAV18-TR recommended for high-current applications?

A: The BAV18-TR provides the highest average rectified current rating at 250mA, exceeding the 200mA threshold specified in the 1N462A speed classification. Its fast recovery characteristics (≤500ns) align with the original part's speed profile, making it functionally equivalent for higher-current rectification circuits.

Q: Are all substitute parts RoHS compliant?

A: The 1N4148TR, 1N6263, and BAV18-TR are all ROHS3 compliant. The original 1N462A RoHS status is not specified in the provided data. All substitutes meet current environmental compliance standards.

Q: Can these substitutes be used interchangeably in the same circuit?

A: No. Each substitute has distinct electrical characteristics (voltage rating, current capacity, technology type). Selection must be based on specific circuit requirements. The 1N4148TR suits high-voltage applications, the 1N6263 suits low-current efficiency-critical designs, and the BAV18-TR suits high-current standard rectification.

Q: What is the significance of the DO-35 package designation?

A: DO-35 is the industry-standard through-hole axial package for small signal and general-purpose diodes. All substitute parts use this identical package, ensuring mechanical compatibility with existing PCB layouts and component footprints. The DO-204AH designation is the formal IEC equivalent.

Q: Are there inventory considerations when selecting a substitute?

A: Current inventory levels are: 1N4148TR (240,400 pcs), 1N6263 (3,200 pcs), and BAV18-TR (626 pcs). The 1N4148TR offers the highest availability for production requirements.