S3A General Purpose Rectifier Diode 50V 3A DO-214AB Equivalent & Substitute Parts

Part Overview

The S3A is a general purpose rectifier diode manufactured by Taiwan Semiconductor Corporation, rated for 50V DC reverse voltage and 3A average rectified current in a surface mount DO-214AB (SMC) package. This component is classified as Active product status and is RoHS3 compliant. Substitute parts are identified when equivalent electrical performance and mechanical compatibility are required due to inventory constraints, supply chain considerations, or specific packaging requirements such as tape and reel distribution formats.

Key Parameters

Parameter	Value	Unit
Voltage - DC Reverse (Vr) (Max)	50	V
Current - Average Rectified (Io)	3	A
Voltage - Forward (Vf) (Max) @ If	1.15 V @ 3 A	V
Reverse Recovery Time (trr)	1.5	µs
Current - Reverse Leakage @ Vr	10	µA @ 50 V
Package / Case	DO-214AB, SMC	—
Mounting Type	Surface Mount	—
Operating Temperature - Junction	-55 to 150	°C
RoHS Status	ROHS3 Compliant	—

Substitute Part Grouping Explanation

Substitution of the S3A with the S3A-E3/57T is based on electrical parameter equivalence and mechanical compatibility within the general purpose rectifier diode category. Both parts share identical maximum reverse voltage (50V), average rectified current (3A), reverse leakage current (10µA @ 50V), capacitance (60pF @ 4V, 1MHz), and operating temperature range (-55°C to 150°C). Both components are housed in the DO-214AB (SMC) surface mount package and maintain RoHS3 compliance, REACH unaffected status, and EAR99 ECCN classification.

The primary distinction between these parts is packaging format: the main part S3A is supplied in standard packaging, while the S3A-E3/57T is supplied in tape and reel (TR) format. Secondary differences include forward voltage specification point (1.15V @ 3A for S3A versus 1.15V @ 2.5A for S3A-E3/57T) and reverse recovery time (1.5µs for S3A versus 2.5µs for S3A-E3/57T), both within acceptable ranges for standard recovery rectifier applications.

Parameter Comparison

Parameter	S3A (Main Part)	S3A-E3/57T (Substitute)	Match Status
Manufacturer	Taiwan Semiconductor Corporation	Vishay General Semiconductor - Diodes Division	Different Manufacturer
Voltage - DC Reverse (Vr) (Max)	50 V	50 V	Equivalent
Current - Average Rectified (Io)	3 A	3 A	Equivalent
Voltage - Forward (Vf) (Max) @ If	1.15 V @ 3 A	1.15 V @ 2.5 A	Equivalent
Reverse Recovery Time (trr)	1.5 µs	2.5 µs	Within Standard Recovery Class
Current - Reverse Leakage @ Vr	10 µA @ 50 V	10 µA @ 50 V	Equivalent
Capacitance @ Vr, F	60 pF @ 4V, 1MHz	60 pF @ 4V, 1MHz	Equivalent
Package / Case	DO-214AB, SMC	DO-214AB, SMC	Equivalent
Mounting Type	Surface Mount	Surface Mount	Equivalent
Operating Temperature - Junction	-55°C ~ 150°C	-55°C ~ 150°C	Equivalent
Packaging Format	Standard	Tape & Reel (TR)	Different Format
RoHS Status	ROHS3 Compliant	ROHS3 Compliant	Equivalent
Moisture Sensitivity Level (MSL)	1 (Unlimited)	1 (Unlimited)	Equivalent
REACH Status	REACH Unaffected	REACH Unaffected	Equivalent

Engineering Selection Recommendations

Both the S3A and S3A-E3/57T are Active product status components suitable for general purpose rectification applications requiring 50V, 3A performance in surface mount form factor. Selection between these parts is determined by packaging and supply requirements rather than electrical performance differences.

The S3A is appropriate for applications requiring standard packaging formats with immediate availability from existing inventory (973 pieces in stock). The S3A-E3/57T is appropriate for high-volume production environments utilizing automated tape and reel assembly processes, with significantly higher inventory availability (15,100 pieces in stock).

Both parts maintain identical RoHS3 compliance, REACH unaffected status, and EAR99 ECCN classification, ensuring regulatory equivalence for applications subject to these compliance frameworks. The reverse recovery time difference (1.5µs versus 2.5µs) remains within the standard recovery classification and does not alter functional suitability for general purpose rectifier applications.

Frequently Asked Questions (FAQ)

Q: Are the S3A and S3A-E3/57T electrically interchangeable?

A: Yes. Both parts share identical maximum reverse voltage (50V), average rectified current (3A), reverse leakage current (10µA @ 50V), and operating temperature range (-55°C to 150°C). Forward voltage and reverse recovery time specifications are within acceptable equivalence for standard recovery rectifier applications.

Q: What is the primary difference between these two parts?

A: The primary difference is packaging format. The S3A is supplied in standard packaging, while the S3A-E3/57T is supplied in tape and reel (TR) format for automated assembly processes.

Q: Can the S3A-E3/57T replace the S3A in existing designs?

A: Yes. The S3A-E3/57T is mechanically and electrically compatible with the S3A. Both use the DO-214AB (SMC) surface mount package and share identical pin configuration and footprint requirements.

Q: Are there compliance differences between these parts?

A: No. Both parts are RoHS3 compliant, REACH unaffected, and classified as EAR99 under ECCN regulations. Moisture sensitivity level is identical (MSL 1 - Unlimited) for both parts.

Q: Which part should be selected for high-volume production?

A: The S3A-E3/57T is recommended for high-volume production due to tape and reel packaging compatibility with automated pick-and-place assembly equipment and higher inventory availability.

Q: Does the reverse recovery time difference affect circuit performance?

A: Both parts are classified as standard recovery rectifiers with recovery times exceeding 500ns at currents greater than 200mA. The difference between 1.5µs and 2.5µs does not alter functional suitability for general purpose rectification applications.

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