MBRB2545CT/45 Equivalent & Substitute Parts

Part Overview

The MBRB2545CT/45 is a Schottky diode array featuring one pair common cathode configuration rated for 45 V DC reverse voltage and 15 A average rectified current per diode. Manufactured by Vishay General Semiconductor - Diodes Division, this component is housed in a TO-263-3 D2PAK surface mount package with two leads and a tab.

The MBRB2545CT/45 carries an obsolete product status. Identifying equivalent and substitute parts is necessary to ensure design continuity, maintain supply chain reliability, and access components with active manufacturing status and current compliance certifications.

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	820 mV @ 30 A
Speed	Fast Recovery ≤ 500 ns, > 200 mA (Io)
Current - Reverse Leakage @ Vr	200 µA @ 45 V
Operating Temperature - Junction	-65°C ~ 150°C
Mounting Type	Surface Mount
Package / Case	TO-263-3, D2PAK (2 Leads + Tab), TO-263AB
RoHS Status	RoHS non-compliant
Moisture Sensitivity Level (MSL)	1 (Unlimited)

Substitute Part Grouping Explanation

Substitute parts for the MBRB2545CT/45 are classified based on electrical and mechanical compatibility within the following criteria:

Primary Substitution Parameters:

Diode Configuration: 1 Pair Common Cathode
Technology: Schottky
Voltage - DC Reverse (Vr) (Max): 45 V
Current - Average Rectified (Io) (per Diode): 15 A or higher
Mounting Type: Surface Mount
Package / Case: TO-263-3, D2PAK (2 Leads + Tab) or equivalent footprint

Parametric Equivalent: Parts meeting all primary substitution parameters with identical electrical ratings and package specifications.

Upgrade Parts: Parts exceeding the original specifications in forward voltage performance, temperature range, or compliance status while maintaining core electrical and mechanical compatibility.

Reduced Current Alternatives: Parts rated for lower current (7.5 A) in the same package family, suitable for applications with reduced current requirements.

Parameter Comparison

Manufacturer Part Number	Manufacturer	Vr (Max)	Io (per Diode)	Vf (Max) @ If	Package	Product Status	RoHS Status
MBRB2545CT/45	Vishay	45 V	15 A	820 mV @ 30 A	TO-263-3, D2PAK	Obsolete	Non-compliant
VS-MBRB2545CT-M3	Vishay	45 V	15 A	820 mV @ 30 A	TO-263-3, D2PAK	Active	ROHS3 Compliant
SBRB2545CTG	onsemi	45 V	15 A	620 mV @ 15 A	TO-263-3, D2PAK	Obsolete	ROHS3 Compliant
DSSK28-0045BS-TRL	IXYS	45 V	15 A	480 mV @ 15 A	TO-263-3, D2PAK	Active	ROHS3 Compliant
STPS15L45CB	STMicroelectronics	45 V	7.5 A	520 mV @ 7.5 A	TO-252-3, DPAK	Active	ROHS3 Compliant
STPS15L45CB-TR	STMicroelectronics	45 V	7.5 A	520 mV @ 7.5 A	TO-252-3, DPAK	Active	ROHS3 Compliant
STPS2545CG-TR	STMicroelectronics	45 V	12.5 A	570 mV @ 12.5 A	TO-263-3, D2PAK	Active	ROHS3 Compliant
STPS2545CGY-TR	STMicroelectronics	45 V	12.5 A	840 mV @ 25 A	TO-263-3, D2PAK	Active	ROHS3 Compliant
STPS3045CG-TR	STMicroelectronics	45 V	15 A	570 mV @ 15 A	TO-263-3, D2PAK	Active	ROHS3 Compliant
STPS3045CGY-TR	STMicroelectronics	45 V	15 A	570 mV @ 15 A	TO-263-3, D2PAK	Active	ROHS3 Compliant
STPS30L45CG-TR	STMicroelectronics	45 V	15 A	550 mV @ 15 A	TO-263-3, D2PAK	Active	ROHS3 Compliant

Engineering Selection Recommendations

Direct Parametric Equivalent (Active Status):

VS-MBRB2545CT-M3 from Vishay General Semiconductor - Diodes Division is the direct parametric equivalent with identical electrical specifications and package configuration. This part carries active product status and ROHS3 compliance, addressing the obsolescence and compliance limitations of the original MBRB2545CT/45.

Full Electrical & Package Match (Active Status):

STPS3045CG-TR and STPS3045CGY-TR from STMicroelectronics provide identical 45 V, 15 A ratings in the TO-263-3 D2PAK package with active product status and ROHS3 compliance. STPS3045CGY-TR includes automotive grade qualification (AEC-Q101) and extended temperature range (-40°C ~ 175°C). Both parts feature improved forward voltage performance (570 mV @ 15 A) compared to the original specification.

STPS30L45CG-TR from STMicroelectronics maintains the 45 V, 15 A electrical specification and D2PAK package with active status and ROHS3 compliance. This part offers reduced forward voltage (550 mV @ 15 A).

Reduced Current Alternative (Active Status):

STPS15L45CB and STPS15L45CB-TR from STMicroelectronics provide 45 V reverse voltage with 7.5 A current rating in the TO-252-3 DPAK package. These parts are suitable for applications with reduced current requirements and carry active product status with ROHS3 compliance.

Intermediate Current Alternative (Active Status):

STPS2545CG-TR and STPS2545CGY-TR from STMicroelectronics provide 45 V reverse voltage with 12.5 A current rating in the TO-263-3 D2PAK package. Both parts carry active product status and ROHS3 compliance. STPS2545CGY-TR includes automotive grade qualification (AEC-Q101).

Alternative Manufacturer (Active Status):

DSSK28-0045BS-TRL from IXYS provides 45 V, 15 A ratings in the TO-263-3 D2PAK package with active product status and ROHS3 compliance. This part features superior forward voltage performance (480 mV @ 15 A).

Frequently Asked Questions (FAQ)

Q: Can VS-MBRB2545CT-M3 be used as a direct replacement for MBRB2545CT/45?

A: Yes. VS-MBRB2545CT-M3 is a parametric equivalent with identical diode configuration, voltage rating (45 V), current rating (15 A per diode), forward voltage specification (820 mV @ 30 A), and package (TO-263-3 D2PAK). The primary advantage is active product status and ROHS3 compliance compared to the obsolete, non-compliant original part.

Q: What is the difference between STPS3045CG-TR and STPS3045CGY-TR?

A: Both parts share identical electrical specifications (45 V, 15 A, 570 mV @ 15 A) and package configuration (TO-263-3 D2PAK). STPS3045CGY-TR includes automotive grade qualification (AEC-Q101) and extended operating temperature range (-40°C ~ 175°C), making it suitable for automotive applications. STPS3045CG-TR is rated to 200°C maximum junction temperature without automotive qualification.

Q: Can STPS2545CG-TR or STPS2545CGY-TR replace the MBRB2545CT/45?

A: STPS2545CG-TR and STPS2545CGY-TR are rated for 12.5 A per diode, which is lower than the original 15 A specification. These parts are suitable only for applications where the reduced current rating meets design requirements. Both maintain the 45 V voltage rating and TO-263-3 D2PAK package.

Q: What are the package differences between D2PAK and DPAK?

A: D2PAK (TO-263-3) and DPAK (TO-252-3) are distinct surface mount packages with different thermal and electrical characteristics. STPS15L45CB and STPS15L45CB-TR use DPAK packaging and are not pin-compatible with the original D2PAK package. PCB layout modification is required for these alternatives.

Q: Why does DSSK28-0045BS-TRL have lower forward voltage than the original part?

A: Forward voltage variation reflects differences in semiconductor material quality, junction design, and manufacturing process between manufacturers. DSSK28-0045BS-TRL specifies 480 mV @ 15 A compared to MBRB2545CT/45 at 820 mV @ 30 A. Lower forward voltage reduces power dissipation and heat generation in the application.

Q: Are all substitute parts RoHS compliant?

A: All substitute parts listed carry ROHS3 compliance status. The original MBRB2545CT/45 is RoHS non-compliant. Compliance status is a critical consideration for new designs and applications subject to environmental regulations.

Q: Can STPS30L45CG-TR be used in place of STPS3045CG-TR?

A: Yes, both parts share identical 45 V, 15 A electrical specifications and TO-263-3 D2PAK package. STPS30L45CG-TR offers slightly lower forward voltage (550 mV @ 15 A) compared to STPS3045CG-TR (570 mV @ 15 A), resulting in reduced power dissipation. Both carry active product status and ROHS3 compliance.

Q: What is the significance of the automotive grade qualification (AEC-Q101)?

A: AEC-Q101 qualification indicates the part meets automotive industry reliability and quality standards. STPS3045CGY-TR and STPS2545CGY-TR carry this qualification, making them suitable for automotive applications requiring enhanced reliability documentation and extended temperature performance.

Request Quote (Ships tomorrow)

Part Number

Quantity

Company

Contact Name

E-mail

Message