MBR140ESFT3G Equivalent & Substitute Parts

Part Overview

The MBR140ESFT3G is a Schottky rectifier diode rated for 40 V DC reverse voltage and 1 A average rectified current in a surface mount SOD-123F package. This part is classified as obsolete, making equivalent and substitute parts necessary for ongoing design support and procurement. The device features fast recovery characteristics with reverse recovery time ≤ 500 ns for currents > 200 mA, suitable for applications requiring efficient rectification at low forward voltage drop.

Substiute Parts

MBR140ESFT3G

onsemiIn Stock: 907MBR140ESFT3G Datasheet

Current PartRFQ

MBR140ESFT1G

onsemiIn Stock: 100346MBR140ESFT1G Datasheet

Parametric EquivalentRFQ

NRVB140ESFT1G

onsemiIn Stock: 47468NRVB140ESFT1G Datasheet

Parametric EquivalentRFQ

NRVB140ESFT3G

onsemiIn Stock: 832NRVB140ESFT3G Datasheet

Parametric EquivalentRFQ

SL04-E3-18

Vishay General Semiconductor - Diodes DivisionIn Stock: 50438SL04-E3-18 Datasheet

SimilarRFQ

SS14LSH

Taiwan Semiconductor CorporationIn Stock: 21110SS14LSH Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the MBR140ESFT3G is determined by strict equivalence across the following critical parameters:

Primary Equivalence Criteria:

• Voltage - DC Reverse (Vr) (Max): 40 V
• Current - Average Rectified (Io): 1 A (or higher)
• Technology: Schottky
• Mounting Type: Surface Mount
• Operating Temperature Range: -55°C to 175°C (or wider)
• RoHS3 Compliance

Parametric Equivalents maintain identical electrical specifications and are direct replacements within the same package family (SOD-123F). These parts are classified as active products with current manufacturing status.

Similar Parts meet the core voltage and current requirements but may differ in package type, forward voltage characteristics, reverse leakage current, or capacitance specifications. These parts are suitable for applications where package footprint differences are acceptable and electrical performance remains within design tolerances.

Parameter Comparison

Engineering Selection Recommendations

For Direct Replacement (Parametric Equivalents):

MBR140ESFT1G, NRVB140ESFT1G, and NRVB140ESFT3G are parametric equivalents of the obsolete MBR140ESFT3G. All three maintain identical electrical specifications (40 V, 1 A, 560 mV forward voltage) and operate within the same temperature range (-55°C to 175°C). MBR140ESFT1G is the standard-grade active equivalent. NRVB140ESFT1G and NRVB140ESFT3G are automotive-grade variants qualified to AEC-Q101, suitable for applications requiring automotive-level reliability and traceability.

For Applications Accepting Package Variations:

SL04-E3-18 (Vishay) and SS14LSH (Taiwan Semiconductor Corporation) are similar parts meeting the 40 V, 1 A core requirements. SL04-E3-18 uses a DO-219AB package with slightly lower forward voltage (540 mV @ 1.1 A) and higher current rating (1.1 A). SS14LSH uses a SOD-123H package with automotive qualification (AEC-Q101) and forward voltage of 550 mV @ 1 A. Both parts are active products with current manufacturing support.

Compliance Considerations:

All listed parts maintain ROHS3 compliance and REACH unaffected status, consistent with the original MBR140ESFT3G. Moisture sensitivity level (MSL) is rated 1 (Unlimited) across all equivalents and similar parts.

Frequently Asked Questions (FAQ)

Q: Can MBR140ESFT1G be used as a direct replacement for the obsolete MBR140ESFT3G?

A: Yes. MBR140ESFT1G is a parametric equivalent with identical electrical specifications (40 V reverse voltage, 1 A current rating, 560 mV forward voltage @ 1 A) and the same SOD-123F package. The primary difference is product status: MBR140ESFT1G is active with current manufacturing availability.

Q: What is the difference between MBR140ESFT1G and NRVB140ESFT1G?

A: Both parts are parametric equivalents with identical electrical specifications. NRVB140ESFT1G is automotive-grade and qualified to AEC-Q101, making it suitable for automotive applications requiring enhanced reliability and qualification documentation. MBR140ESFT1G is standard-grade without automotive qualification.

Q: Can SL04-E3-18 replace MBR140ESFT3G in all applications?

A: SL04-E3-18 meets the core voltage (40 V) and current (1.1 A) requirements and is a similar part. However, it uses a different package (DO-219AB instead of SOD-123F), which requires PCB layout modification. Forward voltage is slightly lower (540 mV @ 1.1 A vs. 560 mV @ 1 A). Verify PCB footprint compatibility and confirm that the lower forward voltage does not affect circuit performance before substitution.

Q: What is the difference between SOD-123F and SOD-123H packages?

A: SOD-123F and SOD-123H are both surface mount packages for small signal diodes but have different physical dimensions and lead configurations. SS14LSH uses SOD-123H, while MBR140ESFT3G uses SOD-123F. Direct PCB footprint compatibility cannot be assumed; verify package dimensions against your PCB design before substitution.

Q: Are all substitute parts RoHS3 compliant?

A: Yes. All listed parametric equivalents and similar parts maintain ROHS3 compliance, consistent with the original MBR140ESFT3G.

Q: Which substitute part has the lowest forward voltage drop?

A: SL04-E3-18 has the lowest forward voltage at 540 mV @ 1.1 A, compared to 560 mV @ 1 A for MBR140ESFT3G. SS14LSH has 550 mV @ 1 A. Lower forward voltage reduces power dissipation in rectification applications.

Q: Can I use NRVB140ESFT3G in non-automotive applications?

A: Yes. NRVB140ESFT3G is automotive-qualified but can be used in standard industrial and consumer applications. Automotive qualification indicates enhanced reliability and traceability; it does not restrict use to automotive applications only.