S10MCHR7G Equivalent & Substitute Parts

Part Overview

The S10MCHR7G is a general-purpose rectifier diode manufactured by Taiwan Semiconductor Corporation, rated for 1000 V DC reverse voltage and 10 A average rectified current in a DO-214AB (SMC) surface mount package. This part is discontinued at DiGi Electronics, necessitating identification of equivalent alternatives that maintain electrical and mechanical compatibility for existing designs.

The S10MCHR7G is qualified to AEC-Q101 automotive standards and operates across a junction temperature range of -55°C to 150°C. Its standard recovery speed (>500ns) and forward voltage of 1.1 V @ 10 A define its performance characteristics within general-purpose rectification applications.

Key Parameters

Parameter	Value	Unit
Voltage - DC Reverse (Vr) (Max)	1000	V
Current - Average Rectified (Io)	10	A
Voltage - Forward (Vf) (Max) @ If	1.1 V @ 10 A	V
Speed	Standard Recovery >500ns, > 200mA (Io)	-
Current - Reverse Leakage @ Vr	1	µA @ 1000 V
Package / Case	DO-214AB, SMC	-
Operating Temperature - Junction	-55 to 150	°C
Mounting Type	Surface Mount	-
Grade	Automotive	-
Qualification	AEC-Q101	-

Substitute Part Grouping Explanation

Substitution of the S10MCHR7G requires matching or exceeding the following critical electrical parameters:

Mandatory Matching Parameters:

Voltage - DC Reverse (Vr) (Max): 1000 V minimum
Package / Case: DO-214AB (SMC) surface mount
Mounting Type: Surface Mount

Performance Parameters (Must Not Degrade):

Current - Average Rectified (Io): 10 A minimum
Voltage - Forward (Vf) (Max): Must be compatible with circuit design
Speed: Standard or faster recovery acceptable
Operating Temperature - Junction: Must encompass or exceed -55°C to 150°C range

The substitute parts identified in this reference fall into two distinct categories based on current rating:

Category A - Full Current Rating (10 A): No direct 10 A equivalents in the provided substitute list. All identified substitutes are rated at 3 A or 5 A, representing reduced current capacity.

Category B - Reduced Current Rating (3 A or 5 A): These parts maintain 1000 V reverse voltage and DO-214AB packaging but operate at lower average rectified current. Substitution in this category is valid only when circuit design permits reduced current handling.

Parameter Comparison

Parameter	S10MCHR7G	CFRC307-G	CGRC507-G	CURC307-G	ER3M-TP	RS3M-13-F	S3M-13-F	S3M-TP	S3MB-13-F
Manufacturer	Taiwan Semiconductor	Comchip Technology	Comchip Technology	Comchip Technology	Micro Commercial Co	Diodes Incorporated	Diodes Incorporated	Micro Commercial Co	Diodes Incorporated
Voltage - DC Reverse (Vr) (Max)	1000 V	1000 V	1000 V	1000 V	1000 V	1000 V	1000 V	1000 V	1000 V
Current - Average Rectified (Io)	10 A	3 A	5 A	3 A	3 A	3 A	3 A	3 A	3 A
Voltage - Forward (Vf) (Max) @ If	1.1 V @ 10 A	1.3 V @ 3 A	1.15 V @ 5 A	1.7 V @ 3 A	1.7 V @ 3 A	1.3 V @ 3 A	1.15 V @ 3 A	1.2 V @ 3 A	1.15 V @ 3 A
Speed	Standard Recovery >500ns	Fast Recovery ≤500ns	Standard Recovery >500ns	Fast Recovery ≤500ns	Fast Recovery ≤500ns	Fast Recovery ≤500ns	Standard Recovery >500ns	Standard Recovery >500ns	Standard Recovery >500ns
Current - Reverse Leakage @ Vr	1 µA @ 1000 V	5 µA @ 1000 V	10 µA @ 1000 V	5 µA @ 1000 V	5 µA @ 1000 V	5 µA @ 1000 V	10 µA @ 1000 V	10 µA @ 1000 V	10 µA @ 1000 V
Package / Case	DO-214AB, SMC	DO-214AB, SMC	DO-214AB, SMC	DO-214AB, SMC	DO-214AB, SMC	DO-214AB, SMC	DO-214AB, SMC	DO-214AB, SMC	DO-214AA, SMB
Operating Temperature - Junction	-55 to 150°C	150°C (Max)	150°C (Max)	150°C (Max)	-50 to 175°C	-65 to 150°C	-65 to 150°C	-55 to 150°C	-65 to 150°C
Mounting Type	Surface Mount	Surface Mount	Surface Mount	Surface Mount	Surface Mount	Surface Mount	Surface Mount	Surface Mount	Surface Mount
RoHS Status	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant
Product Status	Discontinued	Active	Active	Active	Active	Active	Active	Active	Active

Engineering Selection Recommendations

Current Rating Consideration:

The S10MCHR7G operates at 10 A average rectified current. No substitute parts in the provided list maintain this current rating. The highest-rated alternative is CGRC507-G at 5 A. Selection of any substitute requires circuit analysis to confirm that reduced current capacity does not exceed thermal or operational limits in the target application.

Voltage and Package Compatibility:

All identified substitute parts maintain the 1000 V DC reverse voltage rating and DO-214AB (SMC) surface mount package, with the exception of S3MB-13-F and RS3MB-13-F, which use DO-214AA (SMB) packaging. SMB packages are physically larger and require PCB layout modification.

Active Product Status:

All substitute parts listed carry Active product status, ensuring continued availability and supply chain stability. The S10MCHR7G is discontinued, making substitution necessary for new designs or production continuation.

Compliance and Qualification:

The S10MCHR7G carries AEC-Q101 automotive qualification. Among the substitutes, only the S10MCHR7G explicitly lists automotive grade. Substitute parts carry ROHS3 compliance and REACH Unaffected status, matching the original part's environmental compliance profile.

Recovery Speed Characteristics:

The S10MCHR7G operates with standard recovery speed (>500ns). Substitutes CFRC307-G, CURC307-G, ER3M-TP, and RS3M-13-F offer fast recovery (≤500ns), which is compatible but represents a performance enhancement. Remaining substitutes maintain standard recovery speed.

Temperature Range:

The S10MCHR7G operates from -55°C to 150°C. ER3M-TP extends the upper limit to 175°C, while RS3M-13-F and S3M-13-F extend the lower limit to -65°C. These variations are acceptable for most applications but should be verified against specific thermal requirements.

Frequently Asked Questions (FAQ)

Q: Can CGRC507-G (5 A) directly replace S10MCHR7G (10 A)?

A: CGRC507-G maintains identical voltage rating (1000 V) and package (DO-214AB SMC). However, its 5 A current rating is half that of the original part. Direct substitution is valid only if circuit design analysis confirms that maximum current demand does not exceed 5 A under all operating conditions, including transient and fault scenarios.

Q: Why are most substitutes rated at 3 A instead of 10 A?

A: The provided substitute list contains only 3 A and 5 A alternatives. This reflects market availability at the time of data compilation. For applications requiring full 10 A capacity, additional sourcing beyond this reference list may be necessary.

Q: Is S3MB-13-F compatible with S10MCHR7G?

A: S3MB-13-F uses DO-214AA (SMB) packaging instead of DO-214AB (SMC). While electrically compatible at 1000 V and 3 A, the SMB package is physically larger and requires PCB footprint modification. This substitution is valid only when PCB layout can accommodate the larger package dimensions.

Q: What is the difference between fast recovery (≤500ns) and standard recovery (>500ns)?

A: Recovery speed defines how quickly the diode transitions from conducting to blocking state. Fast recovery diodes switch more rapidly, reducing switching losses in high-frequency applications. Standard recovery diodes are suitable for lower-frequency rectification. Substituting a standard recovery part with a fast recovery part is compatible; the reverse substitution may introduce switching losses.

Q: Do all substitutes meet automotive qualification?

A: The S10MCHR7G carries AEC-Q101 automotive qualification. The provided substitute list does not explicitly state automotive qualification for alternative parts. Automotive applications requiring AEC-Q101 certification should verify qualification status with manufacturers before substitution.

Q: Can ER3M-TP be used in applications requiring -55°C minimum temperature?

A: ER3M-TP operates from -50°C to 175°C, which does not meet the -55°C minimum of the original part. For applications requiring -55°C operation, S3M-TP (-55°C to 150°C) or parts with -65°C minimum ratings (RS3M-13-F, S3M-13-F, RS3MB-13-F, S3MB-13-F) are required.

Q: What is the impact of higher reverse leakage current in substitutes?

A: The S10MCHR7G exhibits 1 µA reverse leakage at 1000 V. Most substitutes show 5 µA or 10 µA leakage. Higher leakage increases standby power dissipation and heat generation. For applications with strict power budget requirements, lower leakage alternatives should be prioritized.

Q: Are all substitutes RoHS3 compliant?

A: Yes. All identified substitute parts carry ROHS3 Compliant status, matching the environmental compliance of the original S10MCHR7G.

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