S2M Equivalent & Substitute Parts

Part Overview

The S2M is a general-purpose rectifier diode manufactured by Taiwan Semiconductor Corporation, rated for 1000 V DC reverse voltage and 2 A average rectified current in a DO-214AA (SMB) surface mount package. This component is classified as Active product status with standard recovery characteristics and is ROHS3 compliant. Equivalent and substitute parts are identified based on matching or superior electrical performance within the same package family or compatible alternatives that maintain functional compatibility in circuit applications.

Key Parameters

Parameter	Value	Unit
Voltage - DC Reverse (Vr) (Max)	1000	V
Current - Average Rectified (Io)	2	A
Voltage - Forward (Vf) (Max) @ If	1.15 V @ 2 A	V
Reverse Recovery Time (trr)	1.5	µs
Current - Reverse Leakage @ Vr	1	µA @ 1000 V
Package / Case	DO-214AA, SMB	—
Mounting Type	Surface Mount	—
Operating Temperature - Junction	-55 to 150	°C
RoHS Status	ROHS3 Compliant	—

Substitute Part Grouping Explanation

Substitute parts for the S2M are classified into two categories based on electrical and mechanical compatibility:

Parametric Equivalents maintain identical or equivalent electrical specifications across all critical parameters: 1000 V reverse voltage rating, 2 A average rectified current, 1.15 V forward voltage at rated current, standard recovery characteristics, and DO-214AA (SMB) package configuration. These parts are direct functional replacements.

Similar Alternatives share the same 1000 V reverse voltage rating and surface mount SMB/SMA package family but differ in one or more of the following parameters: average rectified current (1.5 A or 3 A), forward voltage characteristics, recovery speed classification, or package variant (SMA instead of SMB). These parts are suitable for applications where the specified parameter difference does not compromise circuit performance.

Critical substitution parameters:

Voltage - DC Reverse (Vr) (Max): Must equal or exceed 1000 V
Current - Average Rectified (Io): Must equal or exceed 2 A for direct equivalence; lower ratings require circuit analysis
Package / Case: DO-214AA (SMB) for direct mechanical compatibility; DO-214AC (SMA) requires PCB layout verification
Mounting Type: Surface Mount (all candidates)
Operating Temperature Range: Must encompass application requirements
RoHS Status: ROHS3 Compliant (all candidates)

Parameter Comparison

Part Number	Manufacturer	Vr (Max) [V]	Io [A]	Vf (Max) @ If [V]	trr [µs]	Package	Product Status
S2M	Taiwan Semiconductor Corporation	1000	2	1.15 @ 2A	1.5	DO-214AA (SMB)	Active
S2M R5G	Taiwan Semiconductor Corporation	1000	2	1.15 @ 2A	1.5	DO-214AA (SMB)	Discontinued at DiGi Electronics
CGRB307-G	Comchip Technology	1000	3	1.1 @ 3A	—	DO-214AA (SMB)	Active
RS2M-13-F	Diodes Incorporated	1000	1.5	1.3 @ 1.5A	0.5	DO-214AA (SMB)	Active
RS2MA-13-F	Diodes Incorporated	1000	1.5	1.3 @ 1.5A	0.5	DO-214AC (SMA)	Active
S2M (MDD)	MDD	1000	2	1.15 @ 2A	—	SOD-214AC (SMA)	Active
S2M-13-F	Diodes Incorporated	1000	1.5	1.15 @ 1.5A	—	DO-214AA (SMB)	Active
S2M-LTP	Micro Commercial Co	1000	2	1.15 @ 2A	—	DO-214AA (SMB)	Active
S2M_R1_00001	Panjit International Inc.	1000	2	1.1 @ 2A	—	DO-214AA (SMB)	Active
S2MA-13-F	Diodes Incorporated	1000	1.5	1.15 @ 1.5A	—	DO-214AC (SMA)	Active
S2MHE3_A/H	Vishay General Semiconductor - Diodes Division	1000	1.5	1.15 @ 1.5A	2	DO-214AA (SMB)	Active

Engineering Selection Recommendations

Direct Parametric Equivalents (Recommended for 1:1 Replacement):

S2M-LTP (Micro Commercial Co) and S2M_R1_00001 (Panjit International Inc.) are functionally equivalent to the primary S2M part, maintaining 1000 V reverse voltage, 2 A average rectified current, 1.15 V forward voltage at rated current, and DO-214AA (SMB) package configuration. Both are Active product status with ROHS3 compliance and unlimited moisture sensitivity level. S2M-LTP offers fast recovery characteristics (≤500 ns), while S2M_R1_00001 maintains standard recovery (>500 ns) matching the original specification.

Higher Current Alternative:

CGRB307-G (Comchip Technology) provides 3 A average rectified current in the same DO-214AA (SMB) package with 1000 V reverse voltage rating. This part is suitable for applications requiring higher current capacity while maintaining voltage compatibility. Product status is Active with ROHS3 compliance.

Lower Current Alternatives (Circuit Analysis Required):

RS2M-13-F, S2M-13-F, S2MA-13-F, and S2MHE3_A/H are rated for 1.5 A average rectified current, below the 2 A specification of the primary part. These alternatives are suitable only when circuit design accommodates reduced current capacity. RS2M-13-F and S2MA-13-F feature fast recovery characteristics (≤500 ns). S2MHE3_A/H includes automotive qualification (AEC-Q101) and is suitable for automotive applications.

Package Variant Considerations:

S2M (MDD) and RS2MA-13-F use DO-214AC (SMA) package instead of DO-214AA (SMB). SMA packages have different footprint dimensions and require PCB layout verification before substitution. Both maintain 1000 V reverse voltage rating and ROHS3 compliance.

Discontinued Part:

S2M R5G (Taiwan Semiconductor Corporation) is discontinued at DiGi Electronics and should not be selected for new designs despite parametric equivalence to the primary S2M part.

Frequently Asked Questions (FAQ)

Q: Can RS2M-13-F replace S2M in all applications?

A: RS2M-13-F is rated for 1.5 A average rectified current compared to S2M's 2 A rating. Substitution is valid only if circuit design operates at or below 1.5 A. Both parts share 1000 V reverse voltage rating, DO-214AA (SMB) package, and ROHS3 compliance. Forward voltage differs (1.3 V @ 1.5 A for RS2M-13-F versus 1.15 V @ 2 A for S2M), which may affect thermal performance in high-current applications.

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

A: Both are surface mount rectifier packages with different physical dimensions and PCB footprints. DO-214AA (SMB) is the package specified for S2M. DO-214AC (SMA) is used by S2M (MDD) and RS2MA-13-F. Substitution between these packages requires PCB layout verification to confirm footprint compatibility. Electrical specifications remain equivalent when voltage and current ratings match.

Q: Is CGRB307-G suitable as a direct replacement for S2M?

A: CGRB307-G provides 3 A average rectified current in DO-214AA (SMB) package with 1000 V reverse voltage rating, exceeding S2M's 2 A specification. This part is mechanically and electrically compatible for applications where higher current capacity is acceptable. Forward voltage is 1.1 V @ 3 A compared to S2M's 1.15 V @ 2 A. Product status is Active with ROHS3 compliance.

Q: Why is S2M R5G not recommended despite matching specifications?

A: S2M R5G is discontinued at DiGi Electronics. While parametric specifications match the primary S2M part (1000 V, 2 A, DO-214AA SMB package), discontinued status creates supply chain risk and limits long-term availability for production and field service applications.

Q: Can S2MHE3_A/H be used in non-automotive applications?

A: S2MHE3_A/H is rated for 1.5 A average rectified current with automotive qualification (AEC-Q101). While the part is electrically suitable for non-automotive applications, the 1.5 A rating is below S2M's 2 A specification. Substitution requires circuit analysis to confirm operation within the lower current rating. All other electrical parameters (1000 V reverse voltage, 1.15 V forward voltage @ 1.5 A, DO-214AA SMB package) are compatible.

Q: What does RoHS3 compliance mean for these parts?

A: ROHS3 compliance indicates the part meets Restriction of Hazardous Substances Directive requirements, restricting lead, cadmium, mercury, hexavalent chromium, and specified brominated flame retardants. All substitute parts listed are ROHS3 compliant, ensuring regulatory compatibility with S2M in applications subject to RoHS requirements.

Q: How does reverse recovery time affect substitution?

A: Reverse recovery time (trr) affects switching speed and switching losses in high-frequency applications. S2M specifies 1.5 µs standard recovery. RS2M-13-F and RS2MA-13-F offer faster recovery (0.5 µs), reducing switching losses. S2MHE3_A/H specifies 2 µs, slightly slower than S2M. For DC rectification applications, trr differences have minimal impact. For switching power supplies or high-frequency circuits, faster recovery characteristics reduce power dissipation.

Q: Are all substitute parts available in the same packaging options?

A: Packaging availability varies by manufacturer and distributor. S2M is available in Cut Tape (CT) and Digi-Reel packaging. S2M-LTP and S2M_R1_00001 are supplied in Tape & Reel (TR). RS2M-13-F and S2MA-13-F are available in Cut Tape (CT) and Digi-Reel. Verify packaging availability with the component supplier before finalizing procurement specifications.

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