Equivalent & Substitute Parts Reference: S3A-M3/9AT

Part Overview

S3A-M3/9AT is a general-purpose rectifier diode with a 50V maximum DC reverse voltage and 3A average rectified current. It is designed for surface mount applications in the DO-214AB (SMC) package. The product is currently active. Alternate models may be necessary for supply flexibility, inventory needs, or to maintain specification compliance across production batches.

Key Parameters

Parameter	Provided Value
Manufacturer Part Number	S3A-M3/9AT
Manufacturer	Vishay General Semiconductor - Diodes Division
Category	Diodes, Rectifiers
Packaging	Tape & Reel (TR)
Voltage - DC Reverse (Vr) (Max)	50 V
Current - Average Rectified (Io)	3A
Voltage - Forward (Vf) (Max) @ If	1.15 V @ 2.5 A
Reverse Recovery Time (trr)	2.5 µs
Current - Reverse Leakage @ Vr	10 µA @ 50 V
Mounting Type	Surface Mount
Package / Case	DO-214AB, SMC
Operating Temperature - Junction	-55°C ~ 150°C
RoHS Status	ROHS3 Compliant
REACH Status	REACH Unaffected
Moisture Sensitivity Level (MSL)	1 (Unlimited)
Product Status	Active

Substitute Part Grouping Explanation

Substitution is determined based on the following explicit parameters: maximum DC reverse voltage, average rectified current, forward voltage at specified current, reverse recovery time, reverse leakage current at rated voltage, mounting type, package/case format, operating temperature range, RoHS and REACH compliance, and moisture sensitivity level. Only components that match all these criteria are included as valid substitutes.

Parameter Comparison

Parameter	Main Part: S3A-M3/9AT	Parametric Equivalent: S3A-E3/57T
Manufacturer	Vishay General Semiconductor - Diodes Division	Vishay General Semiconductor - Diodes Division
Category	Diodes, Rectifiers	Diodes, Rectifiers
Packaging	Tape & Reel (TR)	Tape & Reel (TR)
Voltage - DC Reverse (Vr) (Max)	50 V	50 V
Current - Average Rectified (Io)	3A	3A
Voltage - Forward (Vf) (Max) @ If	1.15 V @ 2.5 A	1.15 V @ 2.5 A
Reverse Recovery Time (trr)	2.5 µs	2.5 µs
Current - Reverse Leakage @ Vr	10 µA @ 50 V	10 µA @ 50 V
Mounting Type	Surface Mount	Surface Mount
Package / Case	DO-214AB, SMC	DO-214AB, SMC
Operating Temperature - Junction	-55°C ~ 150°C	-55°C ~ 150°C
RoHS Status	ROHS3 Compliant	ROHS3 Compliant
REACH Status	REACH Unaffected	REACH Unaffected
Moisture Sensitivity Level (MSL)	1 (Unlimited)	1 (Unlimited)
Product Status	Active	Active

Engineering Selection Recommendations

Both S3A-M3/9AT and S3A-E3/57T are listed as active with identical RoHS3 and REACH compliance. Moisture Sensitivity Level is 1 (Unlimited) for both models. Either part can be selected where ongoing compliance and status are required, based solely on the matching electrical, mechanical, and regulatory fields provided.

Frequently Asked Questions (FAQ)

Q: What parameters must match for a rectifier diode to be considered compatible as a substitute?
A: Compatibility is ensured by matching maximum DC reverse voltage, average rectified current, forward voltage at specified current, reverse recovery time, reverse leakage current at rated voltage, mounting type, package/case, operating temperature range, RoHS compliance, REACH status, and moisture sensitivity level.

Q: Is package format substitution allowed between these parts?
A: S3A-M3/9AT and S3A-E3/57T both use the DO-214AB (SMC) surface mount package, meeting mechanical compatibility requirements.

Q: Does substitution affect compliance status?
A: Both referenced parts are ROHS3 Compliant and REACH Unaffected, maintaining identical compliance status.

Q: Are there differences in electrical performance between S3A-M3/9AT and S3A-E3/57T based on the provided data?
A: All specified key electrical parameters are identical, allowing direct substitution based on the provided data.

Q: Should operating temperature ranges be reviewed during selection?
A: The operating temperature range is -55°C to 150°C for both parts and therefore meets compatibility requirements.

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