NRVS2B Equivalent & Substitute Parts

Part Overview

The NRVS2B is a general-purpose rectifier diode manufactured by onsemi, rated for 100 V DC reverse voltage and 2 A average rectified current in a Surface Mount SMB (DO-214AA) package. This device is classified as "Not For New Designs," indicating it has been superseded in onsemi's product portfolio. Applications requiring this diode specification must transition to active equivalent or substitute components to ensure long-term supply chain continuity and design support.

Key Parameters

Parameter	Value	Unit
Voltage - DC Reverse (Vr) (Max)	100	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 @ 100 V
Package / Case	DO-214AA, SMB	—
Operating Temperature - Junction	-65 to 150	°C
Mounting Type	Surface Mount	—

Substitute Part Grouping Explanation

Substitution of the NRVS2B is determined by the following critical parameters:

Primary Substitution Criteria:

Voltage - DC Reverse (Vr) (Max): 100 V minimum
Current - Average Rectified (Io): 2 A minimum
Package / Case: DO-214AA (SMB) surface mount
Voltage - Forward (Vf) (Max): 1.15 V or lower @ rated current
Operating Temperature Range: Must encompass application requirements

Parametric Equivalent: The S2B (Diotec Semiconductor) meets all primary electrical specifications with identical reverse voltage, forward voltage, and current ratings in the same SMB package.

Similar Substitute: The S2BHE3_A/H (Vishay General Semiconductor - Diodes Division) provides equivalent reverse voltage and forward voltage characteristics but with a reduced average rectified current rating of 1.5 A. This part is suitable only for applications requiring ≤1.5 A average rectified current. Both the NRVS2B and S2BHE3_A/H carry AEC-Q101 automotive qualification and ROHS3 compliance.

Parameter Comparison

Parameter	NRVS2B (onsemi)	S2B (Diotec)	S2BHE3_A/H (Vishay)
Voltage - DC Reverse (Vr) (Max)	100 V	100 V	100 V
Current - Average Rectified (Io)	2 A	2 A	1.5 A
Voltage - Forward (Vf) (Max) @ If	1.15 V @ 2 A	1.15 V @ 2 A	1.15 V @ 1.5 A
Speed (Recovery)	Standard >500ns, >200mA	Standard >500ns, >200mA	Standard >500ns, >200mA
Reverse Recovery Time (trr)	2 µs	1.5 µs	2 µs
Current - Reverse Leakage @ Vr	1 µA @ 100 V	5 µA @ 100 V	1 µA @ 100 V
Package / Case	DO-214AA, SMB	DO-214AA, SMB	DO-214AA, SMB
Operating Temperature - Junction	-65 to 150°C	-50 to 150°C	-55 to 150°C
Product Status	Not For New Designs	Active	Active
RoHS Status	ROHS3 Compliant	Not Applicable	ROHS3 Compliant
AEC-Q101 Qualification	Yes	Not Listed	Yes

Engineering Selection Recommendations

For Full Current Capacity (2 A) Applications:

The S2B (Diotec Semiconductor) is the direct parametric equivalent to the NRVS2B. Both devices support 2 A average rectified current with identical forward voltage characteristics. The S2B is in active production status, ensuring supply chain availability. The S2B exhibits a lower reverse recovery time (1.5 µs versus 2 µs), which may provide improved switching performance in high-frequency rectification circuits. However, the S2B does not carry published AEC-Q101 automotive qualification, and its RoHS compliance status is listed as "Not Applicable." Selection of the S2B is appropriate for non-automotive applications or where automotive qualification is not a design requirement.

For Automotive or AEC-Q101 Qualified Applications:

The S2BHE3_A/H (Vishay General Semiconductor - Diodes Division) maintains AEC-Q101 qualification and ROHS3 compliance equivalent to the NRVS2B. This part is suitable for applications with average rectified current requirements of 1.5 A or less. The S2BHE3_A/H is in active production and provides long-term design support. Applications requiring the full 2 A capacity with automotive qualification should evaluate alternative qualified sources or consult with component suppliers for extended lifecycle support of the NRVS2B.

Temperature Range Considerations:

The NRVS2B operates from -65°C to 150°C. The S2B operates from -50°C to 150°C, and the S2BHE3_A/H operates from -55°C to 150°C. Applications requiring operation below -50°C must retain the NRVS2B or identify alternative qualified sources.

Frequently Asked Questions (FAQ)

Q: Can the S2B directly replace the NRVS2B in all applications?

A: The S2B is a parametric equivalent for applications not requiring AEC-Q101 automotive qualification. Both devices share identical reverse voltage (100 V), forward voltage (1.15 V @ 2 A), and current ratings (2 A). The S2B is in active production, whereas the NRVS2B is not recommended for new designs. Verify that your application does not require automotive qualification or extended low-temperature operation below -50°C.

Q: What is the difference between the S2B and S2BHE3_A/H?

A: The S2B supports 2 A average rectified current, while the S2BHE3_A/H is rated for 1.5 A. Both share the same 100 V reverse voltage and 1.15 V forward voltage specifications. The S2BHE3_A/H carries AEC-Q101 automotive qualification and ROHS3 compliance. Select the S2B for full 2 A capacity in non-automotive applications; select the S2BHE3_A/H for automotive applications with ≤1.5 A current requirements.

Q: Are all three diodes in the same package?

A: Yes. The NRVS2B, S2B, and S2BHE3_A/H are all housed in the DO-214AA (SMB) surface mount package. PCB layout and footprints are mechanically compatible across all three devices.

Q: What is the significance of the reverse recovery time difference between these parts?

A: The NRVS2B and S2BHE3_A/H have a reverse recovery time (trr) of 2 µs, while the S2B has 1.5 µs. Reverse recovery time affects switching speed and switching losses in rectification circuits. The S2B's lower trr may reduce power dissipation in high-frequency applications. For standard 50/60 Hz rectification, this difference is not significant.

Q: Why does the NRVS2B have a lower operating temperature minimum (-65°C) compared to the substitutes?

A: The NRVS2B is specified for -65°C to 150°C, while the S2B and S2BHE3_A/H are specified for -50°C and -55°C respectively. Applications requiring operation below -50°C must use the NRVS2B or identify alternative qualified sources. Most commercial and industrial applications operate within the -50°C to 150°C range covered by the substitutes.

Q: Is the S2B suitable for automotive applications?

A: The S2B does not carry published AEC-Q101 automotive qualification. For automotive applications, the S2BHE3_A/H is the qualified substitute, provided the 1.5 A current rating meets application requirements. Consult with your automotive quality assurance team regarding qualification requirements for the S2B in automotive contexts.

Q: What does "Not For New Designs" mean for the NRVS2B?

A: This designation indicates that onsemi has discontinued active development and marketing of the NRVS2B. New circuit designs should not specify this part. Existing designs using the NRVS2B should transition to active equivalent parts such as the S2B or S2BHE3_A/H to ensure long-term supply availability and manufacturer support.

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