Equivalent & Substitute Parts for S5A-M3/9AT

Part Overview

The S5A-M3/9AT is a general-purpose rectifier diode manufactured by Vishay General Semiconductor - Diodes Division. This surface mount diode operates at 50 V DC reverse voltage with a 5 A average rectified current rating and is packaged in the DO-214AB (SMC) form factor. The device is classified as Active product status with full RoHS3 compliance and unlimited moisture sensitivity level (MSL 1).

Substitute parts are identified to provide design flexibility, support supply chain continuity, and accommodate component availability variations across manufacturing batches and distribution channels.

Substiute Parts

S5A-M3/9AT

Vishay General Semiconductor - Diodes DivisionIn Stock: 938S5A-M3/9AT Datasheet

Current PartRFQ

S5A-E3/57T

Vishay General Semiconductor - Diodes DivisionIn Stock: 30120S5A-E3/57T Datasheet

Parametric EquivalentRFQ

S5A V7G

Taiwan Semiconductor CorporationIn Stock: 2555S5A V7G Datasheet

Parametric EquivalentRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the S5A-M3/9AT are qualified based on electrical parameter equivalence and mechanical compatibility. The substitution criteria are:

Primary Equivalence Parameters:

• Voltage - DC Reverse (Vr) (Max): 50 V
• Current - Average Rectified (Io): 5 A
• Voltage - Forward (Vf) (Max) @ If: 1.15 V @ 5 A
• Package / Case: DO-214AB, SMC
• Operating Temperature - Junction: -55°C to 150°C
• RoHS Status: ROHS3 Compliant

Secondary Compatibility Parameters:

• Reverse Recovery Time (trr)
• Current - Reverse Leakage @ Vr
• Capacitance @ Vr, F
• Mounting Type: Surface Mount

Parts meeting all primary equivalence parameters are classified as direct substitutes. Variations in secondary parameters (trr, leakage current, capacitance) do not disqualify substitution when primary electrical and mechanical specifications are identical.

Parameter Comparison

Engineering Selection Recommendations

S5A-E3/57T (Vishay General Semiconductor - Diodes Division)

The S5A-E3/57T is a parametric equivalent to the S5A-M3/9AT with identical electrical specifications across all primary equivalence parameters. Both devices are manufactured by Vishay and maintain Active product status. The S5A-E3/57T offers significantly higher inventory availability (30,100 units) compared to the S5A-M3/9AT (855 units), making it suitable for high-volume production requirements. Both parts carry ROHS3 compliance and identical operating temperature ranges. Selection of S5A-E3/57T is appropriate for applications requiring assured supply continuity.

S5A V7G (Taiwan Semiconductor Corporation)

The S5A V7G meets all primary electrical equivalence parameters and is housed in the identical DO-214AB (SMC) package. This device is manufactured by Taiwan Semiconductor Corporation and carries ROHS3 compliance with matching operating temperature specifications. The S5A V7G exhibits a faster reverse recovery time (1.5 µs versus 2.5 µs) and higher junction capacitance (60 pF versus 40 pF), characteristics that may provide performance advantages in specific switching applications. However, the S5A V7G is classified as Discontinued at DiGi Electronics, indicating limited future availability. Selection of S5A V7G is restricted to applications where existing inventory is available and long-term supply is not a requirement.

Frequently Asked Questions (FAQ)

Q: Can S5A-E3/57T be used as a direct replacement for S5A-M3/9AT?

A: Yes. The S5A-E3/57T is a direct parametric equivalent. All primary electrical specifications (50 V reverse voltage, 5 A average rectified current, 1.15 V forward voltage at 5 A) and mechanical specifications (DO-214AB SMC package, surface mount) are identical. Both devices operate across the same temperature range (-55°C to 150°C) and maintain ROHS3 compliance.

Q: What are the differences between S5A-M3/9AT and S5A V7G?

A: The S5A V7G differs in two secondary parameters: reverse recovery time (1.5 µs versus 2.5 µs) and junction capacitance (60 pF versus 40 pF at 4V, 1MHz). All primary electrical and mechanical specifications remain identical. The S5A V7G is manufactured by Taiwan Semiconductor Corporation rather than Vishay. The S5A V7G is discontinued at DiGi Electronics, limiting future availability.

Q: Are all substitute parts available in the same packaging format?

A: Yes. S5A-M3/9AT, S5A-E3/57T, and S5A V7G are all packaged in DO-214AB (SMC) surface mount form factor. All three devices are suitable for identical PCB layouts and reflow soldering processes.

Q: Which substitute part should be selected for new designs?

A: S5A-E3/57T is recommended for new designs. It maintains Active product status, offers superior inventory availability (30,100 units), and is manufactured by the same supplier (Vishay) as the primary part. All electrical and mechanical specifications are identical to S5A-M3/9AT.

Q: Can S5A V7G be used in high-volume production?

A: S5A V7G is not suitable for high-volume production due to its Discontinued status at DiGi Electronics. Current inventory (2,533 units) is limited, and future supply cannot be assured. Use of S5A V7G is restricted to applications where existing stock is available and production volumes are limited.

Q: Do all substitute parts meet RoHS compliance requirements?

A: Yes. S5A-M3/9AT, S5A-E3/57T, and S5A V7G are all ROHS3 Compliant with Moisture Sensitivity Level 1 (Unlimited). All devices are suitable for applications requiring RoHS and REACH compliance.

Q: What is the significance of the faster reverse recovery time in S5A V7G?

A: The S5A V7G exhibits a reverse recovery time of 1.5 µs compared to 2.5 µs in S5A-M3/9AT. Faster reverse recovery reduces switching losses and may improve efficiency in high-frequency switching applications. However, this parameter difference does not affect substitution eligibility for standard rectification applications.