MBRD340 Equivalent & Substitute Parts

Part Overview

The MBRD340 is a Schottky rectifier diode rated for 40 V DC reverse voltage and 3 A average rectified current in a Surface Mount TO-252-3 (DPAK) package. This component is classified as Obsolete, which necessitates identification of equivalent and substitute parts for ongoing design support and procurement. The MBRD340 operates across a junction temperature range of -40°C to 150°C and exhibits fast recovery characteristics suitable for switching applications.

Key Parameters

Parameter	Value
Technology	Schottky
Voltage - DC Reverse (Vr) (Max)	40 V
Current - Average Rectified (Io)	3 A
Voltage - Forward (Vf) (Max) @ If	600 mV @ 3 A
Speed	Fast Recovery ≤ 500ns, > 200mA (Io)
Current - Reverse Leakage @ Vr	200 µA @ 40 V
Package / Case	TO-252-3, DPAK (2 Leads + Tab), SC-63
Mounting Type	Surface Mount
Operating Temperature - Junction	-40°C ~ 150°C

Substitute Part Grouping Explanation

Substitution of the MBRD340 is determined by electrical and mechanical parameter equivalence. All substitute parts must satisfy the following criteria:

Electrical Parameters (Mandatory Match):

Voltage - DC Reverse (Vr) (Max): 40 V
Current - Average Rectified (Io): 3 A
Voltage - Forward (Vf) (Max) @ If: 600 mV @ 3 A
Speed: Fast Recovery ≤ 500ns, > 200mA (Io)
Current - Reverse Leakage @ Vr: 200 µA @ 40 V

Mechanical Parameters (Mandatory Match):

Package / Case: TO-252-3, DPAK (2 Leads + Tab), SC-63
Mounting Type: Surface Mount

Compliance Considerations:

RoHS Status: Substitutes with ROHS3 Compliant status are preferred for new designs
Operating Temperature Range: Extended range (-65°C to 175°C) provides additional margin

Substitute parts are grouped into two categories: Parametric Equivalents (identical electrical and mechanical specifications) and Upgrades (identical core specifications with enhanced compliance or temperature range).

Parameter Comparison

Parameter	MBRD340	VS-MBRD340-M3	MBRD340T4G	SBRD8340T4G-VF01
Manufacturer	Vishay General Semiconductor - Diodes Division	Vishay General Semiconductor - Diodes Division	onsemi	onsemi
Product Status	Obsolete	Active	Active	Active
Voltage - DC Reverse (Vr) (Max)	40 V	40 V	40 V	40 V
Current - Average Rectified (Io)	3 A	3 A	3 A	3 A
Voltage - Forward (Vf) (Max) @ If	600 mV @ 3 A	600 mV @ 3 A	600 mV @ 3 A	600 mV @ 3 A
Speed	Fast Recovery ≤ 500ns, > 200mA (Io)	Fast Recovery ≤ 500ns, > 200mA (Io)	Fast Recovery ≤ 500ns, > 200mA (Io)	Fast Recovery ≤ 500ns, > 200mA (Io)
Current - Reverse Leakage @ Vr	200 µA @ 40 V	200 µA @ 40 V	200 µA @ 40 V	200 µA @ 40 V
Package / Case	TO-252-3, DPAK (2 Leads + Tab), SC-63	TO-252-3, DPAK (2 Leads + Tab), SC-63	TO-252-3, DPAK (2 Leads + Tab), SC-63	TO-252-3, DPAK (2 Leads + Tab), SC-63
Mounting Type	Surface Mount	Surface Mount	Surface Mount	Surface Mount
Operating Temperature - Junction	-40°C ~ 150°C	-40°C ~ 150°C	-65°C ~ 175°C	-65°C ~ 175°C
RoHS Status	RoHS non-compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant
Qualification	-	-	-	AEC-Q101

Engineering Selection Recommendations

For Direct Replacement (Parametric Equivalent):

VS-MBRD340-M3 is the parametric equivalent to MBRD340, manufactured by Vishay General Semiconductor - Diodes Division. This part maintains identical electrical and mechanical specifications while offering Active product status and ROHS3 compliance. The VS-MBRD340-M3 is suitable for direct substitution in existing designs where the original MBRD340 is no longer available.

For New Designs (Upgrade Options):

MBRD340T4G (onsemi) and SBRD8340T4G-VF01 (onsemi) are upgrade alternatives that provide extended operating temperature range (-65°C to 175°C) compared to the original specification (-40°C to 150°C). Both parts maintain identical electrical performance and DPAK packaging.

SBRD8340T4G-VF01 includes AEC-Q101 automotive qualification, making it suitable for applications requiring automotive-grade component certification. This part is recommended for automotive and mission-critical applications.

MBRD340T4G is recommended for general industrial and commercial applications requiring extended temperature margin and active product status with ROHS3 compliance.

Frequently Asked Questions (FAQ)

Q: Can VS-MBRD340-M3 be used as a direct replacement for MBRD340?

A: Yes. VS-MBRD340-M3 is a parametric equivalent with identical electrical specifications (40 V, 3 A, 600 mV forward voltage, fast recovery characteristics) and identical DPAK package. The primary difference is product status (Active vs. Obsolete) and RoHS compliance (ROHS3 vs. non-compliant).

Q: What is the difference between MBRD340T4G and SBRD8340T4G-VF01?

A: Both parts share identical electrical specifications and DPAK packaging. SBRD8340T4G-VF01 includes AEC-Q101 automotive qualification and is designated for automotive applications. MBRD340T4G is suitable for general industrial applications. Both offer extended operating temperature range (-65°C to 175°C) compared to the original MBRD340.

Q: Are all substitute parts compatible with existing PCB layouts designed for MBRD340?

A: Yes. All substitute parts use the TO-252-3 DPAK package with identical pinout and mechanical dimensions, ensuring direct PCB compatibility without layout modifications.

Q: Does the extended temperature range of MBRD340T4G and SBRD8340T4G-VF01 affect electrical performance?

A: The extended temperature range (-65°C to 175°C) does not alter the specified electrical parameters at rated conditions. The specifications provided (40 V, 3 A, 600 mV forward voltage, 200 µA reverse leakage) remain valid across the operating temperature range.

Q: Which substitute part should be selected for RoHS-compliant designs?

A: VS-MBRD340-M3, MBRD340T4G, and SBRD8340T4G-VF01 all carry ROHS3 compliance certification. The original MBRD340 is RoHS non-compliant. For new designs subject to RoHS requirements, any of the three compliant alternatives are suitable.

Q: Is SBRD8340T4G-VF01 required for non-automotive applications?

A: No. SBRD8340T4G-VF01 is specified for automotive applications requiring AEC-Q101 qualification. For non-automotive applications, MBRD340T4G or VS-MBRD340-M3 provide equivalent electrical performance without automotive qualification overhead.

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