S3DHM6G Equivalent & Substitute Parts

Part Overview

The S3DHM6G 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 production and design requirements. The device is qualified to AEC-Q101 automotive standards and complies with RoHS3 and REACH regulations.

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 V @ 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
Grade	Automotive	—
Qualification	AEC-Q101	—

Substitute Part Grouping Explanation

Substitution of the S3DHM6G is determined by the following critical parameters:

Mandatory Matching Parameters:

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

Allowable Variation Parameters:

Voltage - Forward (Vf): Substitute parts may vary within ±0.25 V at rated current
Reverse Recovery Time (trr): Substitute parts may have faster recovery characteristics (≤500 ns or <500 ns)
Current - Reverse Leakage: Substitute parts may have equal or lower leakage current
Operating Temperature Range: Substitute parts may have extended or equivalent temperature ratings
Product Status: Active or Not For New Designs parts are acceptable; Discontinued parts are not

Substitute parts are grouped into two categories:

Direct Equivalents (Same Electrical and Package Specifications): Parts that match the S3DHM6G in voltage, current, forward voltage, and DO-214AB package with standard recovery characteristics.

Functional Equivalents (Same Voltage/Current, Different Recovery Speed or Package Variant): Parts that maintain 200 V / 3 A ratings but offer faster recovery times or alternative surface mount packages (SMB variant), suitable for applications where recovery speed is not a limiting factor or where package footprint permits substitution.

Parameter Comparison

Part Number	Manufacturer	Vr (Max) [V]	Io [A]	Vf (Max) @ If [V]	trr [µs/ns]	Ir @ Vr [µA]	Package	Product Status
S3DHM6G	Taiwan Semiconductor	200	3	1.15 @ 3A	1.5 µs	5 @ 200V	DO-214AB (SMC)	Discontinued
S3DH	Taiwan Semiconductor	200	3	1.15 @ 3A	1.5 µs	10 @ 200V	DO-214AB (SMC)	Active
ER3D-TP	Micro Commercial Co	200	3	0.95 @ 3A	35 ns	5 @ 200V	DO-214AB (SMC)	Active
ES3D-13-F	Diodes Incorporated	200	3	0.90 @ 3A	25 ns	10 @ 200V	DO-214AB (SMC)	Active
ES3DB-13-F	Diodes Incorporated	200	3	0.90 @ 3A	25 ns	10 @ 200V	DO-214AA (SMB)	Active
MURS320-13-F	Diodes Incorporated	200	3	0.875 @ 3A	25 ns	5 @ 200V	DO-214AB (SMC)	Active
RS3D-13-F	Diodes Incorporated	200	3	1.3 @ 3A	150 ns	5 @ 200V	DO-214AB (SMC)	Active
S3D-13-F	Diodes Incorporated	200	3	1.15 @ 3A	>500 ns	10 @ 200V	DO-214AB (SMC)	Active
S3D-TP	Micro Commercial Co	200	3	1.2 @ 3A	>500 ns	10 @ 200V	DO-214AB (SMC)	Not For New Designs
S3DB-13-F	Diodes Incorporated	200	3	1.15 @ 3A	>500 ns	10 @ 200V	DO-214AA (SMB)	Active
CGRC503-G	Comchip Technology	200	5	1.15 @ 5A	>500 ns	10 @ 200V	DO-214AB (SMC)	Active

Engineering Selection Recommendations

Tier 1 - Direct Replacement (Recommended for Immediate Substitution):

S3DH (Taiwan Semiconductor Corporation) is the primary direct replacement for the discontinued S3DHM6G. Both parts share identical electrical specifications: 200 V reverse voltage, 3 A average rectified current, 1.15 V forward voltage at 3 A, and 1.5 µs reverse recovery time. The S3DH is supplied in Tape & Reel packaging and maintains Active product status. The only parameter difference is reverse leakage current (10 µA versus 5 µA), which is within acceptable tolerance for general-purpose rectifier applications. Both parts carry AEC-Q101 automotive qualification and RoHS3 compliance.

S3D-13-F (Diodes Incorporated) provides an alternative direct equivalent with identical voltage and current ratings, matching forward voltage (1.15 V @ 3 A), and standard recovery characteristics (>500 ns). This part is in Active status with high inventory availability (295,099 pieces). The reverse leakage current is 10 µA, and the operating temperature range extends to -65°C minimum, providing enhanced low-temperature performance compared to the original part.

Tier 2 - Functional Equivalents with Enhanced Performance (Fast Recovery):

ES3D-13-F (Diodes Incorporated) and MURS320-13-F (Diodes Incorporated) offer fast recovery characteristics (25 ns reverse recovery time) while maintaining 200 V / 3 A ratings. These parts feature lower forward voltage (0.90 V and 0.875 V respectively at 3 A), reducing power dissipation in switching applications. Both are in Active status with substantial inventory. These parts are suitable for applications where faster switching performance is beneficial or where lower forward voltage drop is required.

ER3D-TP (Micro Commercial Co) provides fast recovery (35 ns) with the lowest forward voltage (0.95 V @ 3 A) among 3 A rated options. This part is in Active status with high inventory (16,840 pieces) and supports an extended operating temperature range (-50°C to 175°C).

Tier 3 - Package Variant Equivalents (SMB Package):

ES3DB-13-F and S3DB-13-F (both Diodes Incorporated) are functionally equivalent to the S3DHM6G but in DO-214AA (SMB) surface mount package instead of DO-214AB (SMC). These parts maintain identical electrical specifications and are suitable only if the PCB layout accommodates the larger SMB footprint. Both are in Active status.

Tier 4 - Higher Current Rating (Derating Application):

CGRC503-G (Comchip Technology) is rated for 5 A average rectified current at 200 V, providing design margin for applications where 3 A rating is marginal. This part can be used in place of the S3DHM6G with inherent current derating. It maintains standard recovery characteristics and is in Active status.

Parts Not Recommended for New Designs:

S3D-TP (Micro Commercial Co) carries a "Not For New Designs" status and should not be selected for new product development, despite electrical equivalence to the S3DHM6G.

RS3D-13-F (Diodes Incorporated) exhibits higher forward voltage (1.3 V @ 3 A) and longer reverse recovery time (150 ns), making it less suitable than other available options unless specific application requirements mandate these characteristics.

Frequently Asked Questions (FAQ)

Q: Can the S3DH directly replace the S3DHM6G without circuit modification?

A: Yes. The S3DH is a direct electrical equivalent with identical voltage (200 V), current (3 A), forward voltage (1.15 V @ 3 A), and recovery time (1.5 µs) specifications. Both parts use the DO-214AB (SMC) package and require no circuit changes. The only difference is reverse leakage current (10 µA versus 5 µA), which is negligible for general-purpose rectifier applications.

Q: What is the difference between standard recovery and fast recovery diodes in this product line?

A: Standard recovery diodes (S3DHM6G, S3DH, S3D-13-F) have reverse recovery times exceeding 500 ns or approximately 1.5 µs. Fast recovery diodes (ES3D-13-F, MURS320-13-F, ER3D-TP) have reverse recovery times of 25 ns to 35 ns. Fast recovery diodes switch more quickly, reducing switching losses and electromagnetic interference in high-frequency applications. However, they typically exhibit lower reverse leakage current specifications. Selection depends on circuit switching frequency and power dissipation requirements.

Q: Can I use a 5 A rated diode (CGRC503-G) in place of a 3 A rated diode (S3DHM6G)?

A: Yes, the CGRC503-G can be used as a substitute with inherent design margin. The higher current rating (5 A) means the device operates at lower stress levels when carrying 3 A, potentially improving reliability and thermal performance. However, the larger die size may result in slightly different parasitic characteristics. This substitution is appropriate for applications where additional current capacity provides design flexibility.

Q: What is the significance of the DO-214AB (SMC) versus DO-214AA (SMB) package difference?

A: DO-214AB (SMC) and DO-214AA (SMB) are different surface mount package outlines. SMC is smaller than SMB. Parts like ES3DB-13-F and S3DB-13-F use the larger SMB package. These parts are electrically equivalent to the S3DHM6G but require different PCB footprints. Substitution is possible only if the PCB layout accommodates the larger SMB package dimensions. Verify footprint compatibility before selecting SMB variants.

Q: Are all substitute parts automotive qualified?

A: The S3DHM6G carries AEC-Q101 automotive qualification. Most substitute parts listed (S3DH, ES3D-13-F, MURS320-13-F, S3D-13-F, S3DB-13-F) also carry AEC-Q101 qualification. However, CGRC503-G and ER3D-TP do not explicitly list AEC-Q101 qualification in the provided specifications. For automotive applications requiring AEC-Q101 compliance, verify qualification status with the manufacturer before selection.

Q: What does "Not For New Designs" product status mean?

A: "Not For New Designs" indicates that the manufacturer is phasing out the part and recommends against using it in new product development. While S3D-TP may still be available in inventory, it should not be selected for new designs. Active status parts are preferred for long-term production sustainability.

Q: How do I choose between multiple equivalent parts with different forward voltage specifications?

A: Forward voltage differences (ranging from 0.875 V to 1.3 V in the substitute list) directly affect power dissipation. Lower forward voltage reduces heat generation, which is beneficial in high-current or high-frequency applications. For general-purpose rectification at moderate frequencies, forward voltage differences of ±0.25 V are typically acceptable. For power-sensitive applications, select parts with lower forward voltage (MURS320-13-F at 0.875 V or ES3D-13-F at 0.90 V). For standard applications, parts matching the original specification (1.15 V) are appropriate.

Q: Is RoHS3 compliance important for my application?

A: All substitute parts listed are RoHS3 compliant, matching the S3DHM6G specification. RoHS3 compliance is mandatory for products sold in the European Union and many other markets. If your application requires RoHS3 compliance, all listed substitutes are acceptable. If your application does not require RoHS3 compliance, this parameter does not affect substitution decisions.

Q: Can I use parts with different operating temperature ranges?

A: The S3DHM6G operates from -55°C to 150°C. Most substitute parts maintain this range or extend it (e.g., S3D-13-F extends to -65°C minimum; ER3D-TP extends to 175°C maximum). Extended temperature ranges provide additional design margin and are generally acceptable. However, if your application requires operation at the extreme limits of the original specification, verify that the substitute part supports the required temperature range.

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