SD101A-A Equivalent & Substitute Parts

Part Overview

The SD101A-A is a Schottky rectifier diode manufactured by Diodes Incorporated, rated for 60 V DC reverse voltage and 15 mA average rectified current in a DO-35 through-hole package. This component is classified as obsolete, necessitating identification of equivalent substitute parts for ongoing design requirements and procurement needs. Active alternatives with compatible electrical and mechanical specifications are available from multiple manufacturers.

Substiute Parts

SD101A-A

Diodes IncorporatedIn Stock: 818SD101A-A Datasheet

Current PartRFQ

1N5711

Microchip TechnologyIn Stock: 472811N5711 Datasheet

MFR RecommendedRFQ

1N6263

STMicroelectronicsIn Stock: 32191N6263 Datasheet

MFR RecommendedRFQ

BAT42

STMicroelectronicsIn Stock: 45306BAT42 Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the SD101A-A is determined by the following critical parameters:

Primary Compatibility Criteria:

• Technology: Schottky diode
• Voltage - DC Reverse (Vr) (Max): Equal to or greater than 60 V
• Current - Average Rectified (Io): Equal to or greater than 15 mA
• Mounting Type: Through Hole
• Package / Case: DO-35 (DO-204AH, Axial)
• Voltage - Forward (Vf) (Max) @ If: 1 V @ 15 mA or lower

Substitute Parts Identified:

Group 1 - Direct Electrical Equivalents (60 V, 15 mA Rating):

• 1N6263 (STMicroelectronics): Matches voltage and current ratings exactly. Active product status. ROHS3 compliant. Extended operating temperature range to 200°C.

Group 2 - Higher Current Rating (70 V, 33 mA Rating):

• 1N5711 (Microchip Technology): Exceeds voltage and current specifications. Active product status. RoHS non-compliant. Reduced operating temperature range to 150°C.

Group 3 - Lower Voltage Rating (30 V, 200 mA Rating):

• BAT42 (STMicroelectronics): Reduced voltage rating (30 V vs. 60 V). Significantly higher current rating (200 mA). Active product status. ROHS3 compliant. Limited operating temperature range to 125°C.

Parameter Comparison

Engineering Selection Recommendations

1N6263 (STMicroelectronics) - Recommended Primary Substitute

The 1N6263 provides direct electrical equivalence to the SD101A-A with identical voltage (60 V) and current (15 mA) ratings. This part maintains ROHS3 compliance and offers an extended operating temperature range to 200°C, exceeding the original specification. Active product status ensures long-term availability. This substitute is suitable for direct replacement in applications requiring the original SD101A-A specifications.

1N5711 (Microchip Technology) - Higher Performance Alternative

The 1N5711 exceeds the voltage and current specifications of the SD101A-A, providing 70 V reverse voltage and 33 mA average rectified current. This part is appropriate for applications where higher current capacity or voltage margin is beneficial. However, RoHS non-compliance status and reduced operating temperature range to 150°C require evaluation against procurement and environmental requirements. High inventory availability supports supply chain continuity.

BAT42 (STMicroelectronics) - Limited Compatibility

The BAT42 is not recommended as a direct substitute due to reduced maximum reverse voltage (30 V vs. 60 V). This part is suitable only for applications where the circuit operates at voltages below 30 V. The significantly higher current rating (200 mA) and ROHS3 compliance do not offset the voltage limitation. Selection of BAT42 requires circuit redesign verification.

Frequently Asked Questions (FAQ)

Q: Can the 1N6263 be used as a direct replacement for the SD101A-A?

A: Yes. The 1N6263 matches the SD101A-A in voltage rating (60 V), current rating (15 mA), forward voltage drop (1 V @ 15 mA), and package type (DO-35). Both parts are Schottky diodes with identical mounting configurations. The 1N6263 is active and ROHS3 compliant.

Q: What is the difference between the 1N5711 and the SD101A-A?

A: The 1N5711 has a higher maximum reverse voltage (70 V vs. 60 V) and higher average rectified current (33 mA vs. 15 mA). The 1N5711 operating temperature range is reduced to 150°C compared to the SD101A-A at 175°C. The 1N5711 is RoHS non-compliant, whereas the SD101A-A is ROHS3 compliant.

Q: Is the BAT42 suitable for replacing the SD101A-A?

A: The BAT42 is not suitable for direct replacement. The BAT42 has a maximum reverse voltage of 30 V, which is insufficient for applications designed for the SD101A-A's 60 V rating. Use of BAT42 in a 60 V circuit will result in component failure. The BAT42 is appropriate only for circuits operating below 30 V.

Q: Are all substitute parts available in the same DO-35 package?

A: Yes. All substitute parts (1N6263, 1N5711, and BAT42) are available in DO-35 (DO-204AH) through-hole axial packages, matching the SD101A-A package configuration.

Q: What is the RoHS compliance status of the substitute parts?

A: The 1N6263 and BAT42 are ROHS3 compliant. The 1N5711 is RoHS non-compliant. Selection should consider procurement requirements and environmental regulations applicable to the end application.

Q: Which substitute part has the best inventory availability?

A: The 1N5711 has the highest inventory availability at 47,190 pieces. The BAT42 has 45,200 pieces available. The 1N6263 has 3,200 pieces available. All three parts are in active production.

Q: Can the 1N5711 be used in applications requiring the full 60 V rating of the SD101A-A?

A: Yes. The 1N5711 is rated for 70 V maximum reverse voltage, which exceeds the 60 V requirement. However, the reduced operating temperature range (150°C vs. 175°C) and RoHS non-compliance status must be evaluated against application requirements.