S3D M6G Equivalent & Substitute Parts

Part Overview

The S3D M6G is a general-purpose rectifier diode manufactured by Taiwan Semiconductor Corporation, rated for 200 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 support and procurement.

The S3D M6G operates with standard recovery characteristics (>500 ns) and is RoHS3 compliant with unlimited moisture sensitivity rating (MSL 1). Due to its discontinued status, equivalent parts with identical or superior electrical specifications are required for design continuity and component sourcing.

Key Parameters

Parameter	Value	Unit
Voltage - DC Reverse (Vr) (Max)	200	V
Current - Average Rectified (Io)	3	A
Voltage - Forward (Vf) (Max) @ If	1.15 @ 3 A	V
Reverse Recovery Time (trr)	1.5	µs
Current - Reverse Leakage @ Vr	5	µA @ 200 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 S3D M6G is determined by the following critical parameters:

Mandatory Matching Parameters:

Voltage - DC Reverse (Vr) (Max): 200 V minimum
Current - Average Rectified (Io): 3 A minimum
Package / Case: DO-214AB (SMC) or compatible surface mount package
Mounting Type: Surface Mount
RoHS Status: ROHS3 Compliant

Acceptable Variation Parameters:

Voltage - Forward (Vf): Up to 1.15 V @ 3 A (lower values acceptable)
Reverse Recovery Time (trr): Standard recovery (>500 ns) or faster recovery acceptable
Current - Reverse Leakage: Up to 10 µA @ 200 V (lower values acceptable)
Operating Temperature Range: -55°C to 150°C minimum (extended ranges acceptable)

Substitute parts are grouped into two categories:

Parametric Equivalents: Parts with identical electrical ratings and standard recovery characteristics, differing only in packaging format or automotive qualification.

Similar Parts: Parts meeting or exceeding all mandatory parameters with improved electrical characteristics (faster recovery, lower forward voltage, or lower leakage current), suitable for direct replacement with enhanced performance.

Parameter Comparison

Manufacturer Part Number	Manufacturer	Vr (Max) [V]	Io [A]	Vf (Max) @ If [V]	trr [µs/ns]	Ir @ Vr [µA]	Package	Product Status
S3D M6G	Taiwan Semiconductor Corporation	200	3	1.15 @ 3 A	1.5 µs	5 @ 200 V	DO-214AB (SMC)	Discontinued
S3DH	Taiwan Semiconductor Corporation	200	3	1.15 @ 3 A	1.5 µs	10 @ 200 V	DO-214AB (SMC)	Active
ER3D-TP	Micro Commercial Co	200	3	0.95 @ 3 A	35 ns	5 @ 200 V	DO-214AB (SMC)	Active
ES3D-13-F	Diodes Incorporated	200	3	0.90 @ 3 A	25 ns	10 @ 200 V	DO-214AB (SMC)	Active
ES3DB-13-F	Diodes Incorporated	200	3	0.90 @ 3 A	25 ns	10 @ 200 V	DO-214AA (SMB)	Active
MURS320-13-F	Diodes Incorporated	200	3	0.875 @ 3 A	25 ns	5 @ 200 V	DO-214AB (SMC)	Active
MURS320-E3/57T	Vishay General Semiconductor - Diodes Division	200	3	0.875 @ 3 A	35 ns	5 @ 200 V	DO-214AB (SMC)	Active
MURS320-E3/9AT	Vishay General Semiconductor - Diodes Division	200	3	0.875 @ 3 A	35 ns	5 @ 200 V	DO-214AB (SMC)	Active
MURS320-M3/57T	Vishay General Semiconductor - Diodes Division	200	3	0.875 @ 3 A	35 ns	5 @ 200 V	DO-214AB (SMC)	Active
MURS320-M3/9AT	Vishay General Semiconductor - Diodes Division	200	3	0.875 @ 3 A	35 ns	5 @ 200 V	DO-214AB (SMC)	Active
CGRC503-G	Comchip Technology	200	5	1.15 @ 5 A	>500 ns	10 @ 200 V	DO-214AB (SMC)	Active

Engineering Selection Recommendations

Primary Equivalent (Parametric Match):

The S3DH from Taiwan Semiconductor Corporation is the direct parametric equivalent to the S3D M6G. It maintains identical voltage and current ratings, forward voltage characteristics, and recovery time specifications. The S3DH is currently active in production with 3,680 pieces in stock. The only electrical difference is reverse leakage current (10 µA versus 5 µA), which remains within acceptable limits for general-purpose rectification applications. The S3DH is available in Tape & Reel packaging and carries AEC-Q101 automotive qualification, providing enhanced reliability documentation.

High-Performance Alternatives (Fast Recovery):

The ES3D-13-F (Diodes Incorporated) and MURS320 series (Vishay General Semiconductor - Diodes Division) offer superior performance characteristics with fast recovery times (25–35 ns versus 1.5 µs) and reduced forward voltage (0.875–0.90 V versus 1.15 V). These parts are suitable for applications requiring improved efficiency and reduced switching losses. All MURS320 variants maintain identical electrical specifications across different packaging formats (E3/57T, E3/9AT, M3/57T, M3/9AT).

Higher Current Rating Alternative:

The CGRC503-G from Comchip Technology provides 5 A current rating while maintaining 200 V reverse voltage in the same DO-214AB package. This part is suitable for applications requiring additional current margin or future design scaling.

Package Variant:

The ES3DB-13-F is electrically identical to ES3D-13-F but uses the DO-214AA (SMB) package instead of DO-214AB (SMC). This variant is applicable only if PCB layout accommodates the larger SMB footprint.

All recommended substitutes are RoHS3 compliant with MSL 1 rating and active product status, ensuring long-term availability and supply chain stability.

Frequently Asked Questions (FAQ)

Q: Can the S3DH be used as a direct replacement for the S3D M6G?

A: Yes. The S3DH is a parametric equivalent with identical voltage (200 V), current (3 A), forward voltage (1.15 V @ 3 A), and recovery time (1.5 µs) specifications. The reverse leakage current is 10 µA versus 5 µA, which is acceptable for general-purpose rectification. The S3DH is currently in active production.

Q: What is the difference between standard recovery and fast recovery diodes?

A: The S3D M6G has standard recovery time of 1.5 µs (>500 ns). Fast recovery alternatives such as ES3D-13-F (25 ns) and MURS320 series (25–35 ns) switch off more quickly, reducing reverse recovery losses and improving efficiency in switching applications. Standard recovery diodes are suitable for line-frequency rectification; fast recovery diodes are preferred in switching power supplies.

Q: Are the MURS320 variants (E3/57T, E3/9AT, M3/57T, M3/9AT) interchangeable?

A: Yes. All MURS320 variants maintain identical electrical specifications (200 V, 3 A, 0.875 V forward voltage, 35 ns recovery time, 5 µA leakage). The suffix designations indicate different packaging formats and tape configurations. Selection depends on procurement and assembly requirements.

Q: Can the CGRC503-G (5 A) be used in place of the S3D M6G (3 A)?

A: Yes. The CGRC503-G exceeds the current rating requirement (5 A versus 3 A) while maintaining the same 200 V reverse voltage and DO-214AB package. This substitution is suitable for applications requiring additional current margin. Forward voltage is identical at 1.15 V.

Q: What is the difference between DO-214AB (SMC) and DO-214AA (SMB) packages?

A: Both are surface mount diode packages with identical electrical performance. DO-214AB (SMC) is smaller; DO-214AA (SMB) is larger. The ES3DB-13-F uses the larger SMB package. Package selection depends on PCB layout and assembly equipment compatibility. Electrical performance is identical between ES3D-13-F (SMC) and ES3DB-13-F (SMB).

Q: Are all substitute parts RoHS3 compliant?

A: Yes. All recommended substitute parts carry RoHS3 compliance certification and MSL 1 (unlimited) moisture sensitivity rating, matching the environmental and regulatory status of the S3D M6G.

Q: Which substitute offers the lowest forward voltage drop?

A: The MURS320 series (all variants) offers the lowest forward voltage at 0.875 V @ 3 A, compared to 1.15 V for the S3D M6G. The ES3D-13-F offers 0.90 V @ 3 A. Lower forward voltage reduces power dissipation and heat generation in rectification circuits.

Q: Is automotive qualification required for substitution?

A: The S3DH carries AEC-Q101 automotive qualification, while the original S3D M6G does not specify automotive grade. For non-automotive applications, automotive-qualified parts provide additional reliability documentation but are not mandatory. Selection depends on application requirements and quality assurance standards.

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