MBR140HW Equivalent & Substitute Parts

Part Overview

The MBR140HW is a Schottky rectifier diode manufactured by SMC Diode Solutions, rated for 40 V DC reverse voltage and 1 A average rectified current in a surface mount SOD-123 package. This component is classified as Active product status and is RoHS3 compliant with unlimited moisture sensitivity level (MSL 1). Substitute parts are identified when equivalent electrical performance and mechanical compatibility are required due to inventory constraints, supply chain considerations, or design flexibility needs.

Substiute Parts

MBR140HW

SMC Diode SolutionsIn Stock: 1069MBR140HW Datasheet

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MBR0540T1G

onsemiIn Stock: 512146MBR0540T1G Datasheet

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NRVB0540T3G

onsemiIn Stock: 15387NRVB0540T3G Datasheet

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PMEG4010CEGWX

Nexperia USA Inc.In Stock: 23790PMEG4010CEGWX Datasheet

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Key Parameters

Substitute Part Grouping Explanation

Substitution of the MBR140HW is determined by strict equivalence in the following electrical and mechanical parameters:

Critical Matching Parameters:

• Voltage - DC Reverse (Vr) (Max): 40 V
• Package / Case: SOD-123
• Mounting Type: Surface Mount
• Technology: Schottky
• RoHS Status: ROHS3 Compliant

Current Rating Consideration: Substitute parts are grouped into two categories based on average rectified current (Io):

1. Full Current Rating (1 A): Parts rated for 1 A average rectified current provide direct functional equivalence to the MBR140HW.
2. Reduced Current Rating (500 mA): Parts rated for 500 mA average rectified current are suitable for applications where the circuit design operates at or below 500 mA, providing functional substitution within reduced current envelope.

All identified substitute parts maintain the 40 V reverse voltage rating, SOD-123 package form factor, fast recovery speed characteristic (≤ 500ns, > 200mA), and surface mount configuration required for direct board-level replacement.

Parameter Comparison

Engineering Selection Recommendations

PMEG4010CEGWX (Nexperia USA Inc.) is the primary substitute for the MBR140HW. This part maintains identical 40 V reverse voltage and 1 A current rating specifications, ensuring full functional equivalence. Both components are RoHS3 compliant with MSL 1 rating. The PMEG4010CEGWX exhibits slightly higher forward voltage (570 mV @ 1 A versus 550 mV @ 1 A) and lower reverse leakage current (50 µA @ 40 V versus 500 µA @ 40 V), representing improved performance characteristics. Operating temperature range extends to 150 °C maximum, providing enhanced thermal margin compared to the MBR140HW specification of -65 to 125 °C.

MBR0540T1G (onsemi) and NRVB0540T3G (onsemi) are suitable substitutes for applications where the circuit design operates at or below 500 mA average rectified current. Both parts maintain the 40 V reverse voltage rating and SOD-123 package configuration. The NRVB0540T3G carries AEC-Q101 automotive qualification, making it appropriate for automotive-grade applications. Both onsemi parts demonstrate superior reverse leakage characteristics (20 µA @ 40 V) and extended operating temperature range (-55 to 150 °C) compared to the MBR140HW. Packaging differs: MBR0540T1G is supplied in Cut Tape and Digi-Reel format, while NRVB0540T3G is supplied in Tape & Reel format matching the MBR140HW packaging configuration.

All substitute parts are Active product status with RoHS3 compliance and unlimited moisture sensitivity level, confirming suitability for direct component selection in equivalent applications.

Frequently Asked Questions (FAQ)

Q: Can MBR0540T1G or NRVB0540T3G replace MBR140HW in all applications?

A: MBR0540T1G and NRVB0540T3G are suitable substitutes only for applications where the average rectified current requirement is 500 mA or less. These parts are rated for 500 mA maximum, compared to the MBR140HW rating of 1 A. Circuit designs operating above 500 mA require the full 1 A rated substitute, PMEG4010CEGWX.

Q: What is the difference between MBR0540T1G and NRVB0540T3G?

A: Both parts share identical electrical specifications (40 V, 500 mA, SOD-123). The primary differences are packaging format and automotive qualification. MBR0540T1G is supplied in Cut Tape and Digi-Reel format, while NRVB0540T3G is supplied in Tape & Reel format and carries AEC-Q101 automotive qualification. Select NRVB0540T3G for automotive applications or when Tape & Reel packaging is required.

Q: Are all substitute parts pin-compatible with MBR140HW?

A: Yes. All substitute parts use the SOD-123 surface mount package with identical pin configuration and footprint, enabling direct board-level replacement without layout modification.

Q: What is the impact of forward voltage differences between MBR140HW and PMEG4010CEGWX?

A: The PMEG4010CEGWX exhibits 570 mV forward voltage at 1 A compared to 550 mV for the MBR140HW, representing a 20 mV increase. This difference results in marginally higher power dissipation in the diode. For most applications, this variance is negligible; however, designs with tight thermal budgets or high-frequency switching should account for this parameter.

Q: Are all substitute parts RoHS3 compliant?

A: Yes. MBR140HW, MBR0540T1G, NRVB0540T3G, and PMEG4010CEGWX are all RoHS3 compliant with MSL 1 (unlimited) moisture sensitivity level, confirming suitability for standard manufacturing and storage conditions.

Q: Which substitute part offers the best reverse leakage performance?

A: MBR0540T1G and NRVB0540T3G both exhibit 20 µA reverse leakage at 40 V, compared to 500 µA for the MBR140HW and 50 µA for the PMEG4010CEGWX. The onsemi parts provide superior leakage characteristics, beneficial for low-power or precision applications.

Q: Can PMEG4010CEGWX be used as a direct replacement for MBR140HW?

A: Yes. PMEG4010CEGWX is a direct functional equivalent with matching 40 V reverse voltage, 1 A current rating, and SOD-123 package. All electrical and mechanical parameters align with MBR140HW requirements, enabling seamless substitution.