MBRB25H45CT-E3/45 Equivalent & Substitute Parts

Part Overview

The MBRB25H45CT-E3/45 is a Schottky diode array manufactured by Vishay General Semiconductor - Diodes Division. This component features a 1 Pair Common Cathode configuration rated for 45 V DC reverse voltage and 15 A average rectified current per diode. The device is housed in a TO-263-3 D2PAK surface mount package with automotive-grade qualification (AEC-Q101).

The MBRB25H45CT-E3/45 is classified as obsolete. Equivalent and substitute parts are necessary to maintain design continuity, ensure supply chain availability, and support ongoing production requirements for applications utilizing this diode array specification.

Key Parameters

Parameter	Value
Diode Configuration	1 Pair Common Cathode
Technology	Schottky
Voltage - DC Reverse (Vr) (Max)	45 V
Current - Average Rectified (Io) (per Diode)	15 A
Voltage - Forward (Vf) (Max) @ If	640 mV @ 15 A
Speed	Fast Recovery ≤ 500ns, > 200mA (Io)
Current - Reverse Leakage @ Vr	100 µA @ 45 V
Operating Temperature - Junction	-65°C ~ 175°C
Mounting Type	Surface Mount
Package / Case	TO-263-3, D2PAK (2 Leads + Tab), TO-263AB
Grade	Automotive
Qualification	AEC-Q101
RoHS Status	ROHS3 Compliant
Moisture Sensitivity Level (MSL)	1 (Unlimited)

Substitute Part Grouping Explanation

Substitution of the MBRB25H45CT-E3/45 is determined by the following critical parameters:

Primary Matching Criteria:

Diode Configuration: 1 Pair Common Cathode
Technology: Schottky
Voltage - DC Reverse (Vr) (Max): 45 V
Current - Average Rectified (Io) (per Diode): 15 A or greater
Mounting Type: Surface Mount
Package / Case: TO-263-3, D2PAK compatible

Secondary Compatibility Factors:

Operating Temperature Range: Must support application requirements
Forward Voltage (Vf): Lower values indicate improved efficiency
Reverse Leakage Current: Lower values indicate better performance
RoHS and MSL Compliance: Must meet regulatory requirements

Substitute parts are grouped based on their ability to meet or exceed the primary matching criteria while maintaining electrical and mechanical compatibility with the original design.

Parameter Comparison

Parameter	MBRB25H45CT-E3/45	V30D45C-M3/I	DSSK28-0045BS-TRL	STPS2045CGY-TR
Manufacturer	Vishay	Vishay	IXYS	STMicroelectronics
Product Status	Obsolete	Active	Active	Active
Diode Configuration	1 Pair Common Cathode	1 Pair Common Cathode	1 Pair Common Cathode	1 Pair Common Cathode
Technology	Schottky	Schottky	Schottky	Schottky
Voltage - DC Reverse (Vr) (Max)	45 V	45 V	45 V	45 V
Current - Average Rectified (Io) (per Diode)	15 A	15 A	15 A	10 A
Voltage - Forward (Vf) (Max) @ If	640 mV @ 15 A	570 mV @ 15 A	480 mV @ 15 A	570 mV @ 10 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	100 µA @ 45 V	1.5 mA @ 45 V	20 mA @ 45 V	100 µA @ 45 V
Operating Temperature - Junction	-65°C ~ 175°C	-40°C ~ 150°C	-55°C ~ 150°C	-40°C ~ 175°C
Mounting Type	Surface Mount	Surface Mount	Surface Mount	Surface Mount
Package / Case	TO-263-3, D2PAK	TO-263-3, D2PAK	TO-263-3, D2PAK	TO-263-3, D2PAK
Grade	Automotive	Not specified	Not specified	Automotive
Qualification	AEC-Q101	Not specified	Not specified	AEC-Q101
RoHS Status	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant
MSL	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)

Engineering Selection Recommendations

V30D45C-M3/I (Vishay - Active Status)

This substitute maintains full electrical compatibility with the MBRB25H45CT-E3/45 across all primary matching criteria. The V30D45C-M3/I is an active product with superior forward voltage performance (570 mV @ 15 A versus 640 mV @ 15 A), resulting in improved thermal efficiency. The device is ROHS3 compliant with MSL 1 rating. Operating temperature range is -40°C ~ 150°C, which is narrower than the original part. This substitute is suitable for applications where the reduced temperature range is acceptable.

DSSK28-0045BS-TRL (IXYS - Active Status)

This substitute meets all primary matching criteria with the same 45 V reverse voltage and 15 A current rating. The DSSK28-0045BS-TRL demonstrates the lowest forward voltage (480 mV @ 15 A) among available substitutes, providing superior efficiency. Operating temperature range is -55°C ~ 150°C. The device is ROHS3 compliant with MSL 1 rating. This substitute is suitable for applications prioritizing thermal performance and efficiency.

STPS2045CGY-TR (STMicroelectronics - Active Status)

This substitute provides automotive-grade qualification (AEC-Q101) matching the original part specification. The STPS2045CGY-TR is rated for 10 A average rectified current per diode, which is lower than the original 15 A specification. Forward voltage is 570 mV @ 10 A. Operating temperature range is -40°C ~ 175°C, matching the upper temperature limit of the original part. This substitute is suitable only for applications where the reduced current rating (10 A) is acceptable. The automotive qualification and extended upper temperature range provide advantages for automotive applications operating at elevated temperatures.

Frequently Asked Questions (FAQ)

Q: Can the V30D45C-M3/I directly replace the MBRB25H45CT-E3/45 in all applications?

A: The V30D45C-M3/I is electrically compatible with the MBRB25H45CT-E3/45 for applications operating within the temperature range of -40°C ~ 150°C. The original part supports -65°C ~ 175°C. Applications requiring operation below -40°C or above 150°C require evaluation of the specific temperature requirements.

Q: What is the primary advantage of the DSSK28-0045BS-TRL substitute?

A: The DSSK28-0045BS-TRL offers the lowest forward voltage (480 mV @ 15 A) among the available substitutes, resulting in reduced power dissipation and improved thermal efficiency compared to the original MBRB25H45CT-E3/45 (640 mV @ 15 A).

Q: Why is the STPS2045CGY-TR rated for only 10 A instead of 15 A?

A: The STPS2045CGY-TR is a different device variant within the Schottky diode array family. While it maintains the same 45 V reverse voltage rating and D2PAK package, the current rating is limited to 10 A per diode. This substitute is suitable only for applications where the circuit design accommodates the reduced current specification.

Q: Are all substitute parts automotive-qualified?

A: No. The MBRB25H45CT-E3/45 and STPS2045CGY-TR both carry AEC-Q101 automotive qualification. The V30D45C-M3/I and DSSK28-0045BS-TRL do not specify automotive qualification in the provided data. Applications requiring automotive qualification should prioritize the STPS2045CGY-TR, with the understanding that the 10 A current rating must be compatible with the design.

Q: Are all substitute parts compatible with the TO-263-3 D2PAK footprint?

A: Yes. All substitute parts are housed in TO-263-3 D2PAK surface mount packages with 2 leads plus tab configuration. Physical footprint compatibility is maintained across all substitutes.

Q: What is the significance of the reverse leakage current differences?

A: Reverse leakage current affects standby power consumption and thermal performance. The MBRB25H45CT-E3/45 and STPS2045CGY-TR both specify 100 µA @ 45 V. The V30D45C-M3/I specifies 1.5 mA @ 45 V, and the DSSK28-0045BS-TRL specifies 20 mA @ 45 V. Higher reverse leakage results in increased standby power dissipation. Applications sensitive to standby power consumption should consider this parameter.

Q: Are all substitute parts RoHS3 compliant?

A: Yes. All substitute parts listed are ROHS3 compliant with MSL 1 (Unlimited) moisture sensitivity level, matching the original MBRB25H45CT-E3/45 specification.

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