RS3A M6G Equivalent & Substitute Parts

Part Overview

The RS3A M6G is a general-purpose rectifier diode manufactured by Taiwan Semiconductor Corporation, rated for 50 V DC reverse voltage and 3 A average rectified current in a DO-214AB (SMC) surface mount package. This part is discontinued at DiGi Electronics, necessitating identification of equivalent and substitute components for ongoing design and procurement requirements. The RS3A M6G features fast recovery characteristics with a reverse recovery time of 150 ns, making it suitable for applications requiring efficient switching performance at moderate voltage and current levels.

Key Parameters

Parameter	Value	Unit
Voltage - DC Reverse (Vr) (Max)	50	V
Current - Average Rectified (Io)	3	A
Voltage - Forward (Vf) (Max) @ If	1.3 V @ 3 A	V
Speed Classification	Fast Recovery ≤ 500ns, > 200mA (Io)	—
Reverse Recovery Time (trr)	150	ns
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	—
Moisture Sensitivity Level (MSL)	1 (Unlimited)	—

Substitute Part Grouping Explanation

Substitution of the RS3A M6G is determined by strict equivalence of electrical and mechanical parameters. The primary substitution criteria are:

Critical Parameters for Direct Substitution:

Voltage - DC Reverse (Vr) (Max): 50 V
Current - Average Rectified (Io): 3 A
Package / Case: DO-214AB, SMC
Mounting Type: Surface Mount
Speed Classification: Fast Recovery ≤ 500ns, > 200mA (Io)
Reverse Recovery Time (trr): 150 ns

Parts are grouped into the following categories:

Parametric Equivalents: Parts with identical electrical specifications and package type, differing only in manufacturer or product status. These include RS3A (Taiwan Semiconductor Corporation, Active status) and RS3AH (Taiwan Semiconductor Corporation, Automotive grade, AEC-Q101 qualified).

Similar Parts - Same Current Rating, Different Package: Parts maintaining the 50 V / 3 A electrical specification but offered in alternative surface mount packages (SMB instead of SMC). These include ES3AB-13-F, RS3AB-13-F, and variants from Diodes Incorporated.

Similar Parts - Same Voltage, Different Current Rating: Parts with 50 V reverse voltage but higher current ratings (5 A or 10 A), suitable only when circuit design permits increased current capacity. These include CGRC501-G (5 A) and S10A-TP (10 A).

Similar Parts - Same Electrical Class, Different Speed Characteristics: Parts meeting the 50 V / 3 A specification with standard recovery characteristics (>500ns) instead of fast recovery. These include S3A-13-F and S3A-E3/57T.

Parameter Comparison

Manufacturer Part Number	Manufacturer	Vr (Max)	Io	Vf @ If	Speed	trr	Package	Product Status	Inventory
RS3A M6G	Taiwan Semiconductor Corporation	50 V	3 A	1.3 V @ 3 A	Fast Recovery ≤ 500ns	150 ns	DO-214AB, SMC	Discontinued	874 Pcs
RS3A	Taiwan Semiconductor Corporation	50 V	3 A	1.3 V @ 3 A	Fast Recovery ≤ 500ns	150 ns	DO-214AB, SMC	Active	4300 Pcs
RS3AH	Taiwan Semiconductor Corporation	50 V	3 A	1.3 V @ 3 A	Fast Recovery ≤ 500ns	150 ns	DO-214AB, SMC	Active	1098 Pcs
ES3A-13-F	Diodes Incorporated	50 V	3 A	900 mV @ 3 A	Fast Recovery ≤ 500ns	25 ns	DO-214AB, SMC	Active	10300 Pcs
RS3A-13-F	Diodes Incorporated	50 V	3 A	1.3 V @ 3 A	Fast Recovery ≤ 500ns	150 ns	DO-214AB, SMC	Active	5545 Pcs
S3A-13-F	Diodes Incorporated	50 V	3 A	1.15 V @ 3 A	Standard Recovery >500ns	—	DO-214AB, SMC	Active	15200 Pcs
S3A-E3/57T	Vishay General Semiconductor - Diodes Division	50 V	3 A	1.15 V @ 2.5 A	Standard Recovery >500ns	2.5 µs	DO-214AB, SMC	Active	15100 Pcs
ES3AB-13-F	Diodes Incorporated	50 V	3 A	900 mV @ 3 A	Fast Recovery ≤ 500ns	25 ns	DO-214AA, SMB	Active	19310 Pcs
RS3AB-13-F	Diodes Incorporated	50 V	3 A	1.3 V @ 3 A	Fast Recovery ≤ 500ns	150 ns	DO-214AA, SMB	Active	21009 Pcs
CGRC501-G	Comchip Technology	50 V	5 A	1.15 V @ 5 A	Standard Recovery >500ns	—	DO-214AB, SMC	Active	5344 Pcs
S10A-TP	Micro Commercial Co	50 V	10 A	1.2 V @ 10 A	Standard Recovery >500ns	—	DO-214AB, SMC	Obsolete	2203 Pcs

Engineering Selection Recommendations

First Priority - Direct Parametric Equivalents:

RS3A (Taiwan Semiconductor Corporation, Active) and RS3AH (Taiwan Semiconductor Corporation, Active, Automotive AEC-Q101) are direct parametric equivalents to the discontinued RS3A M6G. Both maintain identical electrical specifications (50 V, 3 A, 150 ns reverse recovery time, fast recovery classification) and the same DO-214AB SMC package. RS3A is the standard industrial-grade variant with 4300 pieces in inventory. RS3AH is qualified to AEC-Q101 automotive standards and is appropriate for applications requiring automotive-grade components. Both are ROHS3 compliant with MSL 1 (Unlimited) moisture sensitivity rating.

Second Priority - Fast Recovery Equivalents with Improved Performance:

RS3A-13-F (Diodes Incorporated, Active) maintains identical electrical specifications to the RS3A M6G (50 V, 3 A, 150 ns reverse recovery time, fast recovery classification) in the DO-214AB SMC package. This part is offered in Tape & Reel packaging with 5545 pieces in inventory and extended operating temperature range (-65°C to 150°C). ROHS3 compliant with MSL 1 rating.

ES3A-13-F (Diodes Incorporated, Active) meets the 50 V / 3 A / fast recovery specification with improved forward voltage characteristics (900 mV @ 3 A versus 1.3 V) and faster reverse recovery time (25 ns versus 150 ns). This part is offered in Cut Tape & Digi-Reel packaging with 10300 pieces in inventory. ROHS3 compliant with MSL 1 rating. The improved performance characteristics make this suitable for applications where lower forward voltage drop or faster switching is beneficial.

Third Priority - Alternative Package Options:

ES3AB-13-F and RS3AB-13-F are functionally equivalent to the RS3A M6G but are offered in DO-214AA SMB package instead of DO-214AB SMC. These parts maintain the 50 V / 3 A electrical specification and fast recovery characteristics. Selection of these alternatives requires verification that the SMB package footprint is compatible with the circuit board design. ES3AB-13-F offers improved forward voltage (900 mV) and faster recovery (25 ns). RS3AB-13-F maintains the original 1.3 V forward voltage and 150 ns recovery time specifications.

Fourth Priority - Standard Recovery Alternatives:

S3A-13-F (Diodes Incorporated, Active) and S3A-E3/57T (Vishay, Active) meet the 50 V / 3 A specification but employ standard recovery characteristics (>500ns) instead of fast recovery. These parts are suitable only for applications where switching speed is not a critical design parameter. S3A-13-F offers 15200 pieces in inventory. S3A-E3/57T offers 15100 pieces in inventory. Both are ROHS3 compliant with MSL 1 rating.

Not Recommended - Higher Current Ratings:

CGRC501-G (5 A) and S10A-TP (10 A) exceed the original 3 A current specification. These parts are suitable only when circuit design permits increased current capacity and when the higher current rating provides system-level benefits. S10A-TP is obsolete and should not be selected for new designs.

Frequently Asked Questions (FAQ)

Q: Can RS3A (Taiwan Semiconductor Corporation) be used as a direct replacement for RS3A M6G?

A: Yes. RS3A is a direct parametric equivalent with identical electrical specifications (50 V, 3 A, 150 ns reverse recovery time, fast recovery classification) and the same DO-214AB SMC package. The primary difference is product status: RS3A M6G is discontinued while RS3A is active with 4300 pieces in inventory.

Q: What is the difference between RS3A and RS3AH?

A: Both are parametric equivalents with identical electrical specifications. RS3AH is qualified to AEC-Q101 automotive standards and carries an automotive grade designation. RS3AH is appropriate for applications requiring automotive-grade component certification. RS3A is the standard industrial-grade variant.

Q: Can ES3A-13-F replace RS3A M6G in all applications?

A: ES3A-13-F meets the 50 V / 3 A / fast recovery specification and is compatible with the same DO-214AB SMC package. However, ES3A-13-F has a lower forward voltage (900 mV @ 3 A versus 1.3 V) and faster reverse recovery time (25 ns versus 150 ns). These improved characteristics are generally beneficial but should be verified against specific circuit requirements, particularly in applications sensitive to forward voltage drop or switching transients.

Q: What is the difference between SMC and SMB packages?

A: SMC (DO-214AB) and SMB (DO-214AA) are different surface mount package outlines. SMC is larger than SMB. ES3AB-13-F and RS3AB-13-F are offered in SMB package. Selection of SMB variants requires verification that the smaller package footprint is compatible with the circuit board design. Electrical specifications remain identical between SMC and SMB variants of the same part family.

Q: Why should S3A-13-F or S3A-E3/57T not be selected as primary replacements?

A: S3A-13-F and S3A-E3/57T employ standard recovery characteristics (>500ns) instead of the fast recovery characteristics (≤500ns) of the RS3A M6G. Standard recovery diodes are suitable only for applications where switching speed is not a critical design parameter. Fast recovery diodes are required for applications where efficient switching performance and reduced reverse recovery losses are necessary.

Q: Are all substitute parts ROHS3 compliant?

A: Yes. All substitute parts listed are ROHS3 compliant with Moisture Sensitivity Level 1 (Unlimited). All parts carry REACH Unaffected status and are classified as EAR99 for export control purposes.

Q: Can CGRC501-G (5 A) or S10A-TP (10 A) be used as replacements?

A: CGRC501-G and S10A-TP exceed the original 3 A current specification. These parts are suitable only when circuit design permits increased current capacity and when the higher current rating provides system-level benefits. S10A-TP is obsolete and should not be selected for new designs. CGRC501-G is active but employs standard recovery characteristics instead of fast recovery.

Q: What is the operating temperature range for substitute parts?

A: Most substitute parts operate over -55°C to 150°C or -65°C to 150°C junction temperature range. RS3A-13-F and RS3AB-13-F offer extended lower temperature limit (-65°C). All parts are suitable for the standard -55°C to 150°C operating range of the original RS3A M6G.

Q: Which substitute part offers the best availability?

A: ES3AB-13-F (Diodes Incorporated) offers the highest inventory with 19310 pieces in stock, followed by RS3AB-13-F with 21009 pieces. For DO-214AB SMC package specifically, ES3A-13-F offers 10300 pieces and S3A-13-F offers 15200 pieces in inventory.

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