SD41E3 Equivalent & Substitute Parts

Part Overview

The SD41E3 is a Schottky rectifier diode manufactured by Microchip Technology, designed for high-current applications requiring fast recovery characteristics. This component operates at a maximum reverse voltage of 35 V with an average rectified current rating of 30 A in a stud mount configuration (DO-203AA package). The part is currently Active in product status with 766 units in stock.

Equivalent and substitute parts are identified to provide design flexibility, support supply chain continuity, and accommodate specific application requirements such as alternative mounting configurations or inventory availability.

Substiute Parts

SD41E3

Microchip TechnologyIn Stock: 805SD41E3 Datasheet

Current PartRFQ

SD41

Microchip TechnologyIn Stock: 1149SD41 Datasheet

Parametric EquivalentRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the SD41E3 is determined by electrical and mechanical parameter equivalence within the Schottky diode rectifier category. The critical parameters that define substitution eligibility are:

Electrical Parameters:

• Voltage - DC Reverse (Vr) (Max): 35 V
• Current - Average Rectified (Io): 30 A
• Voltage - Forward (Vf) (Max) @ If: 680 mV @ 30 A
• Speed: Fast Recovery ≤ 500 ns, > 200 mA (Io)
• Current - Reverse Leakage @ Vr: 1.5 mA @ 35 V

Mechanical Parameters:

• Package / Case: DO-203AA, DO-4, Stud
• Mounting Type: Stud Mount (primary); Chassis, Stud Mount (acceptable alternative)

Compliance Parameters:

• RoHS Status: ROHS3 Compliant
• REACH Status: REACH Unaffected

The SD41 qualifies as a parametric equivalent to the SD41E3 based on identical electrical specifications and compatible mounting configurations.

Parameter Comparison

Engineering Selection Recommendations

Both the SD41E3 and SD41 are Active products manufactured by Microchip Technology with identical electrical specifications and compliance certifications. Selection between these parts is based on the following factors:

SD41E3 Selection Criteria:

• Primary application requirement specifies Stud Mount configuration exclusively
• Current inventory availability: 766 units in stock

SD41 Selection Criteria:

• Application permits Chassis or Stud Mount configurations
• Higher inventory availability: 1,114 units in stock
• Designated as Base Product Number within the product family

Both parts maintain ROHS3 Compliance and REACH Unaffected status, ensuring regulatory alignment for applications subject to environmental and hazardous substance restrictions. The identical electrical parameters (35 V reverse voltage, 30 A average rectified current, 680 mV forward voltage drop, and fast recovery characteristics) ensure functional interchangeability in circuit designs.

Frequently Asked Questions (FAQ)

Q: Can the SD41 be used as a direct replacement for the SD41E3?

A: Yes. The SD41 is a parametric equivalent with identical electrical specifications. Both parts feature 35 V reverse voltage rating, 30 A average rectified current, 680 mV forward voltage drop at 30 A, and fast recovery characteristics. The mounting type difference (SD41 supports both Chassis and Stud Mount versus SD41E3 Stud Mount only) does not prevent substitution when the application mounting configuration is compatible.

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

A: Substitution eligibility is determined by matching the following parameters: Voltage - DC Reverse (Vr) (Max) at 35 V, Current - Average Rectified (Io) at 30 A, Voltage - Forward (Vf) (Max) @ If at 680 mV @ 30 A, Speed (Fast Recovery ≤ 500 ns, > 200 mA), and Current - Reverse Leakage @ Vr at 1.5 mA @ 35 V. All substitute parts must maintain these exact specifications.

Q: Are there package or mounting differences between SD41E3 and SD41?

A: Both parts use the DO-203AA (DO-4) Stud package. The SD41E3 specifies Stud Mount configuration, while the SD41 supports both Chassis and Stud Mount configurations. This difference does not affect electrical performance and permits the SD41 to be used in applications where the SD41E3 is specified, provided the mounting configuration is compatible with the application design.

Q: Do both parts meet the same compliance standards?

A: Yes. Both the SD41E3 and SD41 are ROHS3 Compliant and REACH Unaffected, ensuring compliance with environmental and hazardous substance regulations applicable to electronic components.

Q: What is the difference between the SD41E3 and the base product number SD41?

A: The SD41 is designated as the Base Product Number within the Microchip Technology product family. The SD41E3 and SD41 share identical electrical specifications and compliance certifications. The designation difference reflects product family organization rather than functional or electrical distinction.