Equivalent & Substitute Parts for onsemi S2M

Part Overview

The onsemi S2M is a general-purpose rectifier diode rated for 1000 V DC reverse voltage and 2 A average rectified current in a surface mount DO-214AA (SMB) package. This component is classified as "Not For New Designs," indicating it has been superseded in the manufacturer's product portfolio. Identifying equivalent and substitute parts is necessary for applications requiring continued supply, design updates, or alternative sourcing options while maintaining electrical and mechanical compatibility.

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)	2	µs
Current - Reverse Leakage @ Vr	1	µA @ 1000 V
Capacitance @ Vr, F	30	pF @ 4V, 1MHz
Package / Case	DO-214AA, SMB	—
Operating Temperature - Junction	-65 to 150	°C
Speed Classification	Standard Recovery >500ns	—
RoHS Status	ROHS3 Compliant	—

Substitute Part Grouping Explanation

Substitute parts for the onsemi S2M are classified based on the following electrical and mechanical criteria:

Parametric Equivalents maintain identical or functionally equivalent specifications across all critical parameters: 1000 V reverse voltage, 2 A average rectified current, 1.15 V forward voltage at 2 A, standard recovery speed characteristics, DO-214AA (SMB) package, and -65°C to 150°C operating temperature range. These parts are direct replacements with no derating required.

Similar Parts share the same package and voltage rating but differ in one or more of the following parameters: average rectified current (1 A, 1.5 A, or 3 A), forward voltage characteristics, reverse recovery time, reverse leakage current, or operating temperature range. Selection of similar parts requires verification that the application can tolerate the specified parameter differences.

Key Parameters for Substitution:

Voltage - DC Reverse (Vr) (Max): Must equal or exceed 1000 V
Current - Average Rectified (Io): Must equal or exceed 2 A for direct substitution
Package / Case: Must be DO-214AA (SMB) for mechanical compatibility
Operating Temperature Range: Must encompass application requirements
RoHS Compliance: ROHS3 Compliant status required for regulatory alignment

Parameter Comparison

Part Number	Manufacturer	Vr (Max) [V]	Io [A]	Vf (Max) @ If [V]	trr [µs/ns]	Ir @ Vr [µA]	Package	Temp Range [°C]	Product Status
S2M	onsemi	1000	2	1.15 @ 2A	2 µs	1 @ 1000V	DO-214AA (SMB)	-65 to 150	Not For New Designs
NRVS2M	onsemi	1000	2	1.15 @ 2A	2 µs	1 @ 1000V	DO-214AA (SMB)	-65 to 150	Not For New Designs
S2MHE3-LTP	Micro Commercial Co	1000	2	1.15 @ 2A	Standard >500ns	5 @ 1000V	DO-214AA (SMB)	-65 to 150	Active
SB2M-M3/52T	Vishay General Semiconductor	1000	2	1.15 @ 2A	2 µs	1 @ 1000V	DO-214AA (SMB)	-55 to 150	Active
S2M_R1_00001	Panjit International Inc.	1000	2	1.1 @ 2A	Standard >500ns	1 @ 1000V	DO-214AA (SMB)	-55 to 150	Active
S2M-13-F	Diodes Incorporated	1000	1.5	1.15 @ 1.5A	Standard >500ns	5 @ 1000V	DO-214AA (SMB)	-65 to 150	Active
CMR1-10 BK PBFREE	Central Semiconductor Corp	1000	1	1.1 @ 1A	Standard >500ns	10 @ 1000V	DO-214AA (SMB)	-65 to 150	Active
CMR1-10 TR13 PBFREE	Central Semiconductor Corp	1000	1	1.1 @ 1A	Fast ≤500ns	10 @ 1000V	DO-214AA (SMB)	-60 to 175	Active
S3MB-TP	Micro Commercial Co	1000	3	1.15 @ 3A	Standard >500ns	10 @ 1000V	DO-214AA (SMB)	Not specified	Active
ER3MB-TP	Micro Commercial Co	1000	3	1.7 @ 3A	75 ns	5 @ 1000V	DO-214AA (SMB)	-55 to 150	Active
STTH208U	STMicroelectronics	800	2	1.65 @ 2A	75 ns	5 @ 800V	DO-214AA (SMB)	Max 175	Active

Engineering Selection Recommendations

Direct Parametric Equivalents (Preferred for Replacement):

NRVS2M (onsemi) and S2MHE3-LTP (Micro Commercial Co) are parametric equivalents to the S2M, maintaining identical electrical specifications and operating temperature range. NRVS2M carries the same "Not For New Designs" status as the original part. S2MHE3-LTP is an active product with AEC-Q101 automotive qualification, making it suitable for applications requiring automotive-grade reliability and ongoing supply assurance.

Active Product Alternatives (Recommended for New Designs):

SB2M-M3/52T (Vishay General Semiconductor) and S2M_R1_00001 (Panjit International Inc.) are active products meeting the full 1000 V / 2 A specification. SB2M-M3/52T maintains the -55°C to 150°C operating range and identical reverse recovery time. S2M_R1_00001 operates at -55°C to 150°C with marginally lower forward voltage (1.1 V vs. 1.15 V at 2 A), providing improved efficiency characteristics.

Current-Rated Alternatives (Application-Dependent):

S2M-13-F (Diodes Incorporated) is rated for 1.5 A average rectified current and is suitable for applications where the full 2 A rating is not required. CMR1-10 variants (Central Semiconductor Corp) are rated for 1 A and should be selected only when application current requirements do not exceed 1 A.

Higher Current Alternatives (Derating Not Required):

S3MB-TP and ER3MB-TP (both Micro Commercial Co) are rated for 3 A average rectified current in the same DO-214AA (SMB) package. These parts provide current margin for applications approaching the 2 A limit of the original S2M. ER3MB-TP features fast recovery characteristics (75 ns) compared to the standard recovery of the S2M.

Not Recommended:

STTH208U (STMicroelectronics) has a reduced reverse voltage rating of 800 V, making it unsuitable for applications requiring the full 1000 V specification. This part should be selected only when the application voltage requirement is confirmed to be 800 V or lower.

Frequently Asked Questions (FAQ)

Q: Can NRVS2M be used as a direct replacement for S2M?

A: Yes. NRVS2M is a parametric equivalent with identical voltage, current, forward voltage, and operating temperature specifications. Both parts carry "Not For New Designs" status from onsemi. For new designs, S2MHE3-LTP is recommended as an active alternative.

Q: What is the difference between S2M and S2MHE3-LTP?

A: Both parts meet the 1000 V / 2 A specification and operate across -65°C to 150°C. S2MHE3-LTP is an active product with AEC-Q101 automotive qualification, whereas S2M is not for new designs. Reverse leakage current differs slightly (5 µA vs. 1 µA at 1000 V), and junction capacitance is lower in S2MHE3-LTP (20 pF vs. 30 pF at 4 V, 1 MHz).

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

A: S2M-13-F is rated for 1.5 A average rectified current, which is lower than the S2M rating of 2 A. This part is suitable only for applications where the maximum current requirement does not exceed 1.5 A. Verify application current demands before substitution.

Q: Why is STTH208U listed if it has a lower voltage rating?

A: STTH208U has a reduced reverse voltage rating of 800 V compared to the S2M specification of 1000 V. This part is included for reference only and should be selected exclusively when the application voltage requirement is confirmed to be 800 V or lower. Use in 1000 V applications will result in component failure.

Q: What is the significance of AEC-Q101 qualification on S2MHE3-LTP?

A: AEC-Q101 is an automotive industry qualification standard. S2MHE3-LTP meets this qualification, making it suitable for automotive applications and environments requiring enhanced reliability testing and traceability. Non-qualified parts do not carry this assurance.

Q: Are all substitute parts available in the same packaging options as S2M?

A: The S2M is available in Cut Tape (CT) & Digi-Reel® packaging. Substitute parts are available in various packaging formats including Tape & Reel (TR), Cut Tape (CT), and Bulk. Verify packaging availability with the supplier before finalizing procurement specifications.

Q: Can higher-current parts like S3MB-TP be used in place of S2M?

A: Yes. S3MB-TP is rated for 3 A average rectified current in the same DO-214AA (SMB) package. Higher current rating provides design margin and does not create compatibility issues. Forward voltage at rated current differs (1.15 V @ 3 A vs. 1.15 V @ 2 A), so verify thermal and efficiency impacts in the specific application.

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

A: S2M has standard recovery characteristics (>500 ns reverse recovery time). Fast recovery diodes like ER3MB-TP (75 ns) and STTH208U (75 ns) switch faster, reducing switching losses in high-frequency applications. Standard recovery diodes are suitable for line-frequency and low-frequency rectification applications.

Q: Is RoHS3 compliance maintained across all substitute parts?

A: Yes. All substitute parts listed are ROHS3 Compliant, maintaining regulatory alignment with the original S2M specification.

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