MBR2545CT/45 Equivalent & Substitute Parts

Part Overview

The MBR2545CT/45 is a Schottky diode array in a 1 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 packaged in TO-220-3 through-hole format and features fast recovery characteristics with a maximum forward voltage of 820 mV at 30 A.

The MBR2545CT/45 is classified as obsolete. Equivalent and substitute parts are necessary to maintain design continuity and ensure component availability for new production builds and field replacements. Substitute components must maintain electrical compatibility across voltage, current, and thermal specifications while accommodating packaging and compliance requirements.

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	Through Hole
Package / Case	TO-220-3
Product Status	Obsolete
RoHS Status	RoHS non-compliant

Substitute Part Grouping Explanation

Substitution of the MBR2545CT/45 is determined by the following critical parameters:

Electrical Compatibility Requirements:

Voltage - DC Reverse (Vr) (Max): Must equal or exceed 45 V
Current - Average Rectified (Io) (per Diode): Must equal or exceed 15 A
Diode Configuration: Must be 1 Pair Common Cathode
Technology: Must be Schottky
Speed: Must be Fast Recovery ≤ 500 ns, > 200 mA (Io)

Mechanical Compatibility Requirements:

Mounting Type: Through Hole
Package / Case: TO-220-3

Compliance Considerations:

RoHS Status: Obsolete part is non-compliant; active substitutes should be RoHS3 compliant
REACH Status: All parts are REACH Unaffected

Substitute parts are grouped into two categories: direct manufacturer equivalents from Vishay and parametrically equivalent alternatives from onsemi and STMicroelectronics. All listed substitutes maintain the core electrical specifications and TO-220-3 package format required for direct replacement.

Parameter Comparison

Part Number	Manufacturer	Vr (Max)	Io (per Diode)	Vf (Max) @ If	Reverse Leakage @ Vr	Tj (Max)	Product Status	RoHS Status
MBR2545CT/45	Vishay	45 V	15 A	820 mV @ 30 A	200 µA @ 45 V	150°C	Obsolete	Non-compliant
MBR2545CT-E3/45	Vishay	45 V	15 A	820 mV @ 30 A	200 µA @ 45 V	150°C	Active	RoHS3 Compliant
VS-MBR2545CT-M3	Vishay	45 V	15 A	820 mV @ 30 A	200 µA @ 45 V	150°C	Active	RoHS3 Compliant
MBR2545CT-BP	Micro Commercial Co	45 V	25 A	750 mV @ 15 A	1 mA @ 45 V	150°C	Active	Not specified
MBR20L45CTG	onsemi	45 V	10 A	500 mV @ 10 A	500 µA @ 45 V	150°C	Obsolete	RoHS3 Compliant
MBR2545CTG	onsemi	45 V	15 A	620 mV @ 15 A	200 µA @ 45 V	175°C	Active	RoHS3 Compliant
STPS2545CT	STMicroelectronics	45 V	12.5 A	570 mV @ 12.5 A	125 µA @ 45 V	175°C	Active	RoHS3 Compliant
STPS3045CT	STMicroelectronics	45 V	15 A	570 mV @ 15 A	200 µA @ 45 V	200°C	Active	RoHS3 Compliant
STPS30L45CT	STMicroelectronics	45 V	15 A	550 mV @ 15 A	400 µA @ 45 V	150°C	Active	RoHS3 Compliant

Engineering Selection Recommendations

Direct Manufacturer Equivalents (Vishay):

MBR2545CT-E3/45 and VS-MBR2545CT-M3 are direct electrical and mechanical equivalents to the MBR2545CT/45. Both parts maintain identical electrical specifications and TO-220-3 packaging. Both are classified as Active products with RoHS3 compliance, providing regulatory advantage over the obsolete original part. MBR2545CT-E3/45 is supplied in Tube packaging with 2372 units in stock. VS-MBR2545CT-M3 is supplied in Tube packaging with 1007 units in stock. These parts are recommended as primary substitutes for direct replacement applications.

Parametrically Equivalent Alternatives:

MBR2545CTG (onsemi) maintains the 45 V / 15 A electrical specification with improved forward voltage characteristics (620 mV @ 15 A versus 820 mV @ 30 A) and extended maximum junction temperature to 175°C. This part is Active with RoHS3 compliance and has high inventory availability (15312 units). The onsemi part is suitable for applications where improved thermal performance is beneficial.

STPS3045CT (STMicroelectronics) matches the 45 V / 15 A specification with superior forward voltage performance (570 mV @ 15 A) and maximum junction temperature of 200°C. This part is Active with RoHS3 compliance and extensive inventory (38369 units). The STMicroelectronics part offers the highest thermal rating among available substitutes.

STPS30L45CT (STMicroelectronics) provides 45 V / 15 A capability with the lowest forward voltage (550 mV @ 15 A) and is Active with RoHS3 compliance. This part is suitable for applications prioritizing efficiency.

Current-Rated Alternatives:

MBR2545CT-BP (Micro Commercial Co) provides 45 V rating with elevated current capacity (25 A versus 15 A) and improved forward voltage (750 mV @ 15 A). This part is Active and suitable for applications requiring higher current handling.

STPS2545CT (STMicroelectronics) provides 45 V rating with 12.5 A current capacity, representing a lower-current alternative. This part is Active with RoHS3 compliance and is suitable for applications with reduced current requirements.

Compliance Status:

All recommended active substitutes are RoHS3 compliant, addressing the non-compliance status of the obsolete MBR2545CT/45. Selection should prioritize Active product status and RoHS3 compliance for new designs and production builds.

Frequently Asked Questions (FAQ)

Q: Can MBR2545CT-E3/45 directly replace MBR2545CT/45 without circuit modification?

A: Yes. MBR2545CT-E3/45 is a direct equivalent with identical electrical specifications (45 V, 15 A, 820 mV @ 30 A) and TO-220-3 packaging. No circuit modification is required.

Q: What is the difference between MBR2545CT-E3/45 and VS-MBR2545CT-M3?

A: Both parts are direct Vishay equivalents with identical electrical specifications and packaging. The difference is in manufacturing designation and packaging format (both Tube). Either part is suitable for replacement.

Q: Why is MBR2545CTG (onsemi) listed as a substitute if it has different forward voltage specifications?

A: MBR2545CTG maintains the critical electrical parameters: 45 V reverse voltage and 15 A average rectified current. The forward voltage difference (620 mV @ 15 A versus 820 mV @ 30 A) reflects different measurement conditions and represents improved efficiency. The part is parametrically equivalent for circuit operation.

Q: Can STPS3045CT replace MBR2545CT/45 in all applications?

A: STPS3045CT maintains the 45 V / 15 A specification and TO-220-3 package. The superior forward voltage performance (570 mV @ 15 A) and higher maximum junction temperature (200°C) make it suitable for direct replacement. Circuit operation remains compatible.

Q: Is MBR20L45CTG a suitable substitute?

A: MBR20L45CTG is classified as obsolete and provides only 10 A current capacity versus the required 15 A. This part is not recommended as a substitute for the MBR2545CT/45.

Q: What is the advantage of STPS30L45CT over other substitutes?

A: STPS30L45CT provides the lowest forward voltage (550 mV @ 15 A) among available substitutes, resulting in reduced power dissipation and improved efficiency. It maintains 45 V / 15 A specifications and TO-220-3 packaging with RoHS3 compliance.

Q: Can MBR2545CT-BP be used as a substitute despite higher current rating?

A: MBR2545CT-BP provides 25 A capacity, exceeding the 15 A requirement. The part maintains 45 V reverse voltage and TO-220-3 packaging. Higher current capacity does not prevent substitution; the part is suitable for applications where additional current margin is acceptable.

Q: Are all substitute parts RoHS3 compliant?

A: All active substitute parts listed are RoHS3 compliant. MBR20L45CTG is RoHS3 compliant but classified as obsolete. MBR2545CT-BP compliance status is not specified in available data.

Q: What packaging formats are available for substitutes?

A: Substitute parts are supplied in Tube or Bulk packaging formats. MBR2545CT-E3/45 and VS-MBR2545CT-M3 are supplied in Tube. MBR2545CT-BP is supplied in Bulk. All maintain TO-220-3 case format for through-hole mounting.

Q: Which substitute offers the best inventory availability?

A: STPS3045CT (STMicroelectronics) has the highest inventory availability with 38369 units in stock, followed by MBR2545CTG (onsemi) with 15312 units.

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