MBRM140T3 Equivalent & Substitute Parts

Part Overview

The MBRM140T3 is a Schottky diode rated for 40 V DC reverse voltage and 1 A average rectified current in a Surface Mount Powermite package. This part is classified as Obsolete, which necessitates identification of equivalent and substitute components for ongoing design support and procurement. Active alternatives with identical or compatible electrical and mechanical specifications are available from multiple manufacturers.

Key Parameters

Parameter	Value
Technology	Schottky
Voltage - DC Reverse (Vr) (Max)	40 V
Current - Average Rectified (Io)	1 A
Voltage - Forward (Vf) (Max) @ If	550 mV @ 1 A
Speed	Fast Recovery ≤ 500ns, > 200mA (Io)
Current - Reverse Leakage @ Vr	500 µA @ 40 V
Mounting Type	Surface Mount
Package / Case	DO-216AA
Supplier Device Package	Powermite
RoHS Status	RoHS non-compliant
Moisture Sensitivity Level (MSL)	1 (Unlimited)

Substitute Part Grouping Explanation

Substitution of the MBRM140T3 is determined by the following critical parameters:

Primary Substitution Criteria:

Voltage - DC Reverse (Vr) (Max): 40 V (exact match required)
Current - Average Rectified (Io): 1 A (minimum requirement)
Technology: Schottky (fixed requirement)
Speed: Fast Recovery ≤ 500ns, > 200mA (Io) (fixed requirement)
Mounting Type: Surface Mount (fixed requirement)

Secondary Compatibility Factors:

Package / Case: DO-216AA preferred for direct mechanical compatibility; alternative packages acceptable if board layout permits
Voltage - Forward (Vf) (Max) @ If: 550 mV @ 1 A (reference specification; minor variations acceptable within design margins)
Current - Reverse Leakage @ Vr: 500 µA @ 40 V (reference specification; lower values acceptable)

Substitute parts are grouped into two categories:

Category 1 - Direct Equivalents (Identical Electrical and Package Specifications): Parts meeting all primary criteria with matching or superior electrical performance and identical package type.

Category 2 - Functional Equivalents (Compatible Electrical Specifications, Alternative Packages): Parts meeting all primary criteria with compatible electrical performance but different package types. These require board layout verification.

Parameter Comparison

Part Number	Manufacturer	Vr (Max)	Io	Vf (Max) @ If	Reverse Leakage @ Vr	Package / Case	Product Status	RoHS Status
MBRM140T3	onsemi	40 V	1 A	550 mV @ 1 A	500 µA @ 40 V	DO-216AA	Obsolete	RoHS non-compliant
MBRM140T3G	onsemi	40 V	1 A	550 mV @ 1 A	500 µA @ 40 V	DO-216AA	Active	ROHS3 Compliant
UPS5819E3/TR7	Microsemi Corporation	40 V	1 A	550 mV @ 1 A	1 mA @ 40 V	DO-216AA	Active	ROHS3 Compliant
PMEG4010CEJ,115	Nexperia USA Inc.	40 V	1 A	570 mV @ 1 A	50 µA @ 40 V	SC-90, SOD-323F	Active	ROHS3 Compliant
SS1P4L-M3/84A	Vishay General Semiconductor - Diodes Division	40 V	1.5 A	480 mV @ 1 A	150 µA @ 40 V	DO-220AA	Active	ROHS3 Compliant
BAT165E6327HTSA1	Infineon Technologies	40 V	750 mA	740 mV @ 750 mA	50 µA @ 40 V	SC-76, SOD-323	Active	ROHS3 Compliant

Engineering Selection Recommendations

Primary Recommendation - Direct Equivalent:

MBRM140T3G (onsemi) is the direct successor to the MBRM140T3. This part maintains identical electrical specifications (40 V, 1 A, 550 mV forward voltage) and package type (DO-216AA Powermite). The MBRM140T3G is Active in product status and ROHS3 Compliant, addressing the obsolescence and compliance limitations of the original part. No design modifications are required for substitution.

Secondary Recommendations - Functional Equivalents:

UPS5819E3/TR7 (Microsemi Corporation) provides identical voltage and current ratings with the same DO-216AA package. This part is Active and ROHS3 Compliant. The reverse leakage current is higher (1 mA vs. 500 µA), which remains within acceptable design margins for most applications.

PMEG4010CEJ,115 (Nexperia USA Inc.) meets the 40 V and 1 A specifications with improved reverse leakage performance (50 µA). The package is SOD-323F, which is smaller than the original Powermite package. Board layout verification is required before substitution.

SS1P4L-M3/84A (Vishay General Semiconductor - Diodes Division) exceeds the current rating at 1.5 A and offers lower forward voltage (480 mV @ 1 A). The package is DO-220AA, requiring board layout verification. This part is suitable for designs requiring higher current capacity.

Not Recommended for Direct Substitution:

BAT165E6327HTSA1 (Infineon Technologies) has a reduced current rating of 750 mA, which falls below the 1 A specification of the original part. This part is suitable only for applications where the actual operating current does not exceed 750 mA.

Frequently Asked Questions (FAQ)

Q: Can MBRM140T3G be used as a direct replacement for MBRM140T3?

A: Yes. MBRM140T3G is the active equivalent with identical electrical specifications (40 V, 1 A, 550 mV forward voltage) and package type (DO-216AA Powermite). No design changes are required.

Q: What is the primary reason for substituting MBRM140T3?

A: The MBRM140T3 is classified as Obsolete. MBRM140T3G provides an active alternative with identical performance and improved RoHS3 compliance.

Q: Can I use PMEG4010CEJ,115 instead of MBRM140T3?

A: PMEG4010CEJ,115 meets the electrical requirements (40 V, 1 A) but uses a different package (SOD-323F vs. DO-216AA Powermite). Board layout verification is required to confirm mechanical compatibility with the PCB footprint.

Q: What is the difference between DO-216AA and SOD-323F packages?

A: DO-216AA (Powermite) and SOD-323F (SOD-323F) are different surface mount package types with different footprints and pin configurations. Direct physical substitution on the PCB is not possible without layout modification.

Q: Is BAT165E6327HTSA1 suitable for all applications using MBRM140T3?

A: No. BAT165E6327HTSA1 has a reduced current rating of 750 mA, below the 1 A specification. This part is suitable only for applications where actual operating current does not exceed 750 mA.

Q: What are the key electrical parameters that determine substitution compatibility?

A: The critical parameters are Voltage - DC Reverse (Vr) at 40 V, Current - Average Rectified (Io) at 1 A minimum, Technology (Schottky), and Speed (Fast Recovery ≤ 500ns). All substitute parts must meet these specifications.

Q: Does UPS5819E3/TR7 have better performance than MBRM140T3?

A: UPS5819E3/TR7 maintains identical voltage and current ratings with the same package type. The reverse leakage current is higher (1 mA vs. 500 µA), which is acceptable for most applications. Both parts are electrically compatible.

Q: Can SS1P4L-M3/84A be used in place of MBRM140T3?

A: SS1P4L-M3/84A exceeds the electrical requirements with 1.5 A current rating and lower forward voltage (480 mV). The package is DO-220AA, requiring board layout verification. This part is suitable for designs requiring higher current capacity or lower forward voltage drop.

Q: Are all substitute parts RoHS3 Compliant?

A: Yes. All recommended substitute parts (MBRM140T3G, UPS5819E3/TR7, PMEG4010CEJ,115, SS1P4L-M3/84A, and BAT165E6327HTSA1) are ROHS3 Compliant, addressing the RoHS non-compliance of the original MBRM140T3.

Request Quote (Ships tomorrow)

Part Number

Quantity

Company

Contact Name

E-mail

Message