Equivalent & Substitute Parts Reference: S40QR (GeneSiC Semiconductor)

Part Overview

The S40QR by GeneSiC Semiconductor is a general-purpose reverse polarity diode designed for rectification applications in power electronics. Classified under Diodes, Rectifiers, this part features a stud/chassis mount DO-5 package, supporting a 1200 V reverse voltage and 40A average rectified current, with standard recovery performance. The product status is active, and it is RoHS compliant. Identifying alternative models is essential to ensure supply chain continuity, compatibility in existing designs, and maintenance flexibility.

Substiute Parts

S40QR

GeneSiC SemiconductorIn Stock: 996S40QR Datasheet

Current PartRFQ

VS-40HFR120

Vishay General Semiconductor - Diodes DivisionIn Stock: 680332VS-40HFR120 Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of diodes in the rectifiers category requires strict parameter matching for electrical and mechanical compatibility. Substitutes are identified based on the following key parameters:

• Voltage - DC Reverse (Vr) (Max)
• Current - Average Rectified (Io)
• Voltage - Forward (Vf) (Max) @ If
• Speed (Recovery Time)
• Mounting Type
• Package / Case
• Operating Temperature - Junction
• RoHS and compliance status

Only parts matching these specified attributes are considered suitable substitutes.

Parameter Comparison

Engineering Selection Recommendations

Both S40QR and VS-40HFR120 diodes are listed as active and are RoHS compliant, supporting direct substitution based on regulatory and inventory requirements. The Moisture Sensitivity Level of 1 (Unlimited) for both components enables direct replacement in standard production and storage environments. Both components are available in bulk packaging, suitable for stocking and assembly.

Frequently Asked Questions (FAQ)

Q1: What are the primary criteria for substituting S40QR with VS-40HFR120?
A1: Substitution is determined by matching electrical (voltage, current, speed) and mechanical (package, mounting type) parameters, including compliance status and operating temperature.

Q2: Is the DO-203AB, DO-5, Stud package fully compatible between both parts?
A2: Both S40QR and VS-40HFR120 specify the DO-203AB, DO-5, Stud package, supporting mechanical interchangeability.

Q3: How does RoHS or MSL compliance affect substitution?
A3: Both diodes conform to RoHS standards and have Moisture Sensitivity Level 1, ensuring compatibility with current industry environmental and storage requirements.

Q4: Is the recovery speed specification matched?
A4: Both products are denoted as 'Standard Recovery >500ns, >200mA (Io),' indicating alignment for applications requiring standard recovery time.

Q5: What are the differences in reverse leakage specifications?
A5: S40QR lists 10 µA @ 100 V, whereas VS-40HFR120 indicates 9 mA @ 1200 V. Substitute selection should be evaluated based on the specified operational reverse voltage and current requirements.