NRVS2M Equivalent & Substitute Parts

Part Overview

The NRVS2M is a general-purpose rectifier diode manufactured by onsemi, rated for 1000 V DC reverse voltage and 2 A average rectified current in a Surface Mount SMB (DO-214AA) package. This component is classified as "Not For New Designs," indicating it has been superseded in onsemi's product portfolio. Identifying equivalent and substitute parts is necessary for applications requiring continued support, legacy system maintenance, or when the primary part becomes unavailable.

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 @ 2 A	V
Reverse Recovery Time (trr)	2	µs
Current - Reverse Leakage @ Vr	1	µA @ 1000 V
Package / Case	DO-214AA, SMB	—
Operating Temperature - Junction	-65 to 150	°C
Grade	Automotive	—
Qualification	AEC-Q101	—

Substitute Part Grouping Explanation

Substitution of the NRVS2M is determined by the following critical parameters:

Voltage Rating: All substitute parts must maintain a DC reverse voltage rating of 1000 V or greater to ensure safe operation in the same circuit topology.

Current Rating: The average rectified current must be rated at 2 A or higher. Parts rated below 2 A are considered similar but not direct parametric equivalents.

Forward Voltage: Forward voltage drop at rated current must not exceed 1.15 V @ 2 A to maintain circuit performance and thermal characteristics.

Package Compatibility: Surface mount packages (SMB/DO-214AA or SMA/SOD-214AC) are required for PCB integration. Package differences affect board layout and thermal management.

Temperature Range: Operating junction temperature range must support the application's thermal environment. The NRVS2M supports -65°C to 150°C.

Automotive Grade & AEC-Q101: These certifications are mandatory for automotive applications and indicate qualification to automotive reliability standards.

Recovery Characteristics: Reverse recovery time of 2 µs and standard recovery speed (>500 ns, >200 mA) define switching performance.

Parameter Comparison

Parameter	NRVS2M (onsemi)	S2M (MDD)	S2MHE3_A/H (Vishay)	S2MHE3-LTP (Micro Commercial Co)
Voltage - DC Reverse (Vr) (Max)	1000 V	1000 V	1000 V	1000 V
Current - Average Rectified (Io)	2 A	2 A	1.5 A	2 A
Voltage - Forward (Vf) (Max) @ If	1.15 V @ 2 A	1.15 V @ 2 A	1.15 V @ 1.5 A	1.15 V @ 2 A
Reverse Recovery Time (trr)	2 µs	—	2 µs	—
Current - Reverse Leakage @ Vr	1 µA @ 1000 V	—	1 µA @ 1000 V	5 µA @ 1000 V
Capacitance @ Vr, F	30 pF @ 4V, 1MHz	25 pF @ 4V, 1MHz	16 pF @ 4V, 1MHz	20 pF @ 4V, 1MHz
Package / Case	DO-214AA, SMB	SOD-214AC, SMA	DO-214AA, SMB	DO-214AA, SMB
Operating Temperature - Junction	-65 to 150°C	-55 to 150°C	-55 to 150°C	-65 to 150°C
Grade	Automotive	—	Automotive	Automotive
Qualification	AEC-Q101	—	AEC-Q101	AEC-Q101
Product Status	Not For New Designs	Active	Active	Active

Engineering Selection Recommendations

Parametric Equivalents (Direct Substitutes):

S2MHE3-LTP (Micro Commercial Co) is the primary parametric equivalent. It matches the NRVS2M across all critical electrical parameters: 1000 V reverse voltage, 2 A average rectified current, 1.15 V forward voltage at 2 A, and DO-214AA (SMB) package. Both parts carry automotive grade designation and AEC-Q101 qualification. The S2MHE3-LTP supports the full temperature range (-65°C to 150°C) and maintains equivalent reverse leakage and capacitance characteristics. This part is currently in active production status.

S2M (MDD) is a parametric equivalent with respect to voltage and current ratings (1000 V, 2 A, 1.15 V @ 2 A). However, it uses a different package format (SMA/SOD-214AC) instead of SMB/DO-214AA, which requires PCB layout modification. The S2M does not carry automotive grade or AEC-Q101 qualification. This part is suitable only for non-automotive applications where package change is acceptable.

Similar Part (Current-Limited Substitute):

S2MHE3_A/H (Vishay General Semiconductor - Diodes Division) is rated for 1.5 A average rectified current, which is below the NRVS2M's 2 A specification. This part is suitable only for applications where the actual circuit current demand does not exceed 1.5 A. It maintains the same 1000 V reverse voltage, DO-214AA (SMB) package, automotive grade, and AEC-Q101 qualification. The lower current rating makes this a constrained substitute requiring circuit analysis to confirm compatibility.

Compliance & Availability:

All substitute parts maintain ROHS3 compliance, unlimited moisture sensitivity level (MSL 1), and REACH unaffected status, matching the NRVS2M's regulatory profile. S2MHE3-LTP and S2MHE3_A/H are in active production with substantial inventory availability, ensuring supply continuity.

Frequently Asked Questions (FAQ)

Q: Can the S2M (MDD) be used as a direct replacement for the NRVS2M?

A: The S2M matches the NRVS2M's electrical specifications (1000 V, 2 A, 1.15 V forward voltage). However, it uses a different surface mount package (SMA instead of SMB), which requires PCB layout changes. Additionally, the S2M lacks automotive grade and AEC-Q101 qualification, making it unsuitable for automotive applications. Use only in non-automotive circuits where package modification is feasible.

Q: Is the S2MHE3_A/H (Vishay) a suitable replacement?

A: The S2MHE3_A/H is a similar part with the same 1000 V rating and SMB package, but it is rated for only 1.5 A average rectified current compared to the NRVS2M's 2 A. This part is suitable only if the actual circuit current remains below 1.5 A. It maintains automotive grade and AEC-Q101 qualification. Circuit analysis is required to confirm current compatibility before substitution.

Q: What is the best direct substitute for the NRVS2M?

A: The S2MHE3-LTP (Micro Commercial Co) is the primary direct substitute. It matches all critical electrical parameters (1000 V, 2 A, 1.15 V @ 2 A), uses the identical SMB package, maintains automotive grade and AEC-Q101 qualification, and supports the full temperature range (-65°C to 150°C). This part is in active production with adequate inventory.

Q: Does package type affect substitution?

A: Yes. The NRVS2M uses DO-214AA (SMB) package. The S2M uses SOD-214AC (SMA) package, which has different physical dimensions and PCB footprint. Substituting S2M requires PCB redesign. The S2MHE3-LTP and S2MHE3_A/H use the same SMB package and are direct PCB replacements without layout modification.

Q: Are all substitutes automotive-qualified?

A: No. The S2M (MDD) does not carry automotive grade or AEC-Q101 qualification. The S2MHE3-LTP and S2MHE3_A/H both maintain automotive grade and AEC-Q101 qualification, matching the NRVS2M. For automotive applications, use only S2MHE3-LTP or S2MHE3_A/H.

Q: What is the difference in reverse leakage between these parts?

A: The NRVS2M and S2MHE3_A/H specify 1 µA reverse leakage at 1000 V. The S2MHE3-LTP specifies 5 µA at 1000 V. This difference is within acceptable limits for general-purpose rectification but may affect performance in high-impedance circuits. Verify leakage requirements for your specific application.

Q: Can I use these parts interchangeably in existing designs?

A: S2MHE3-LTP is a direct interchange with no design changes required. S2MHE3_A/H requires current analysis to confirm the 1.5 A rating is sufficient. S2M requires PCB layout modification due to package change and is not suitable for automotive applications. Always verify electrical and mechanical compatibility before substitution.

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