MBR2545CT Equivalent & Substitute Parts

Part Overview

The MBR2545CT is a Schottky diode array in a 1 Pair Common Cathode configuration rated for 45 V DC reverse voltage and 25 A average rectified current per diode. The device is packaged in TO-220-3 through-hole format and features fast recovery characteristics with a maximum forward voltage of 850 mV at 25 A. This part is discontinued at DiGi Electronics, necessitating identification of equivalent alternatives that maintain electrical and mechanical compatibility for existing applications.

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)	25 A
Voltage - Forward (Vf) (Max) @ If	850 mV @ 25 A
Speed	Fast Recovery ≤ 500ns, > 200mA (Io)
Current - Reverse Leakage @ Vr	200 µA @ 45 V
Operating Temperature - Junction	-55°C ~ 150°C
Mounting Type	Through Hole
Package / Case	TO-220-3
RoHS Status	ROHS3 Compliant
Moisture Sensitivity Level (MSL)	1 (Unlimited)

Substitute Part Grouping Explanation

Substitution of the MBR2545CT is determined by strict adherence to the following electrical and mechanical parameters:

Critical Matching Parameters:

Diode Configuration: 1 Pair Common Cathode
Technology: Schottky
Voltage - DC Reverse (Vr) (Max): 45 V
Mounting Type: Through Hole
Package / Case: TO-220-3

Current Rating Considerations: The MBR2545CT is rated for 25 A average rectified current per diode. Substitute parts are grouped by their current ratings relative to this specification. Parts with lower current ratings (5 A, 7.5 A, 10 A, 15 A) are suitable for applications requiring reduced current capacity. Parts with equivalent or higher current ratings maintain full compatibility with the original design envelope.

Electrical Performance Parameters: Forward voltage (Vf), reverse leakage current, and operating temperature range are secondary selection criteria. These parameters must be verified against application requirements but do not preclude substitution when primary parameters match.

Parameter Comparison

Part Number	Manufacturer	Io (per Diode)	Vf (Max) @ If	Vr (Max)	Reverse Leakage @ Vr	Tj (Operating)	Package	Product Status
MBR2545CT	Taiwan Semiconductor Corporation	25 A	850 mV @ 25 A	45 V	200 µA @ 45 V	-55°C ~ 150°C	TO-220-3	Discontinued
MBR1545CT-E3/45	Vishay General Semiconductor - Diodes Division	7.5 A	570 mV @ 7.5 A	45 V	100 µA @ 45 V	-65°C ~ 175°C	TO-220-3	Active
MBR2045CT-LJ-01	Diodes Incorporated	10 A	640 mV @ 10 A	45 V	100 µA @ 45 V	-55°C ~ 150°C	TO-220-3	Active
MBR2545CT-E3/45	Vishay General Semiconductor - Diodes Division	15 A	820 mV @ 30 A	45 V	200 µA @ 45 V	-65°C ~ 150°C	TO-220-3	Active
MBR3045CT-BP	Micro Commercial Co	15 A	700 mV @ 15 A	45 V	200 µA @ 45 V	-55°C ~ 150°C	TO-220-3	Active
MBR3045CTE3/TU	Microchip Technology	15 A	700 mV @ 15 A	45 V	50 µA @ 45 V	-65°C ~ 175°C	TO-220-3	Active
MBR3045FCTE3/TU	Microchip Technology	15 A	700 mV @ 15 A	45 V	50 µA @ 45 V	-65°C ~ 175°C	TO-220-3	Active
VT1045C-M3/4W	Vishay General Semiconductor - Diodes Division	5 A	580 mV @ 5 A	45 V	500 µA @ 45 V	-40°C ~ 150°C	TO-220-3	Active
VT1045CBP-M3/4W	Vishay General Semiconductor - Diodes Division	5 A	580 mV @ 5 A	45 V	500 µA @ 45 V	-40°C ~ 200°C (Max)	TO-220-3	Active
VT2045C-M3/4W	Vishay General Semiconductor - Diodes Division	10 A	580 mV @ 10 A	45 V	2 mA @ 45 V	-40°C ~ 150°C	TO-220-3	Active
VT2060G-M3/4W	Vishay General Semiconductor - Diodes Division	10 A	580 mV @ 10 A	45 V	2 mA @ 45 V	-40°C ~ 150°C	TO-220-3	Active

Engineering Selection Recommendations

Primary Selection Criteria:

All substitute parts listed maintain the core electrical specifications required for MBR2545CT replacement: 45 V DC reverse voltage rating, Schottky technology, 1 Pair Common Cathode configuration, and TO-220-3 through-hole packaging. All candidates are ROHS3 compliant with MSL 1 (Unlimited) moisture sensitivity rating.

Current Rating Selection:

For applications requiring the full 25 A capacity of the original MBR2545CT, no direct equivalent with identical current rating is available among active parts. In such cases, parallel connection of lower-rated devices or design modification may be necessary.

For applications with reduced current requirements:

15 A rated parts (MBR2545CT-E3/45, MBR3045CT-BP, MBR3045CTE3/TU, MBR3045FCTE3/TU) provide the closest electrical performance to the original specification.
10 A rated parts (MBR2045CT-LJ-01, VT2045C-M3/4W, VT2060G-M3/4W) are suitable for moderate current applications.
5 A and 7.5 A rated parts (VT1045C-M3/4W, VT1045CBP-M3/4W, MBR1545CT-E3/45) are appropriate for low-current applications.

Compliance and Certification:

MBR2045CT-LJ-01 and VT2045C-M3/4W carry AEC-Q101 automotive qualification. These parts are suitable for applications requiring automotive-grade components.

Temperature Range Considerations:

MBR3045CTE3/TU and MBR3045FCTE3/TU offer extended operating temperature range (-65°C ~ 175°C) compared to the original part (-55°C ~ 150°C). VT1045CBP-M3/4W specifies a maximum junction temperature of 200°C.

Frequently Asked Questions (FAQ)

Q: Can MBR2545CT-E3/45 directly replace MBR2545CT?

A: MBR2545CT-E3/45 shares the same base product number (MBR2545) and maintains identical voltage rating (45 V), diode configuration (1 Pair Common Cathode), and package (TO-220-3). However, the current rating is 15 A versus 25 A for the original part. Direct replacement is suitable only for applications where 15 A current capacity is sufficient.

Q: What is the difference between MBR3045CT-BP and MBR3045CTE3/TU?

A: Both parts are rated for 15 A at 45 V in TO-220-3 packaging with 1 Pair Common Cathode configuration. MBR3045CTE3/TU is manufactured by Microchip Technology and offers lower reverse leakage current (50 µA versus 200 µA) and extended operating temperature range (-65°C ~ 175°C versus -55°C ~ 150°C). MBR3045CT-BP is manufactured by Micro Commercial Co.

Q: Are VT1045C-M3/4W and VT1045CBP-M3/4W interchangeable?

A: Both parts are rated for 5 A at 45 V in TO-220-3 packaging with identical forward voltage characteristics (580 mV @ 5 A). VT1045CBP-M3/4W is designated as TMBS® series and specifies a maximum junction temperature of 200°C, whereas VT1045C-M3/4W specifies -40°C ~ 150°C operating range. Selection depends on application temperature requirements.

Q: What is the significance of the TO-220-3 package designation?

A: TO-220-3 indicates a three-lead through-hole package in the TO-220 form factor. All substitute parts listed use this identical package, ensuring mechanical and pin compatibility with the original MBR2545CT. This allows direct board-level substitution without layout modification.

Q: Can lower-rated parts be used in parallel to achieve higher current capacity?

A: Parallel connection of lower-rated diodes is a circuit design consideration outside the scope of direct component substitution. Such configurations require additional engineering analysis regarding current sharing, thermal management, and circuit topology.

Q: Which substitute part offers the best reverse leakage performance?

A: MBR3045CTE3/TU and MBR3045FCTE3/TU both specify 50 µA reverse leakage current at 45 V, which is lower than the original MBR2545CT specification of 200 µA at 45 V.

Q: Are all listed substitute parts RoHS compliant?

A: All substitute parts listed are ROHS3 compliant with MSL 1 (Unlimited) moisture sensitivity rating, matching the compliance profile of the original MBR2545CT.

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