MBRF2545CT Equivalent & Substitute Parts

Part Overview

The MBRF2545CT 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. This component is packaged in a TO-220-3 Full Pack with isolated tab (ITO-220AB) for through-hole mounting applications. The part is currently discontinued at DiGi Electronics, necessitating identification of equivalent and substitute components that maintain electrical and mechanical compatibility for ongoing production and repair 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)	25 A
Voltage - Forward (Vf) (Max) @ If	820 mV @ 12.5 A
Speed	Fast Recovery ≤ 500ns, > 200mA (Io)
Current - Reverse Leakage @ Vr	2 mA @ 45 V
Operating Temperature - Junction	-55°C ~ 150°C
Mounting Type	Through Hole
Package / Case	TO-220-3 Full Pack, Isolated Tab
Supplier Device Package	ITO-220AB
RoHS Status	ROHS3 Compliant
Moisture Sensitivity Level (MSL)	1 (Unlimited)

Substitute Part Grouping Explanation

Substitution of the MBRF2545CT is determined by the following critical parameters:

Mandatory Compatibility Parameters:

Diode Configuration: 1 Pair Common Cathode
Technology: Schottky
Voltage - DC Reverse (Vr) (Max): 45 V
Package / Case: TO-220-3 Full Pack, Isolated Tab
Supplier Device Package: ITO-220AB
Mounting Type: Through Hole

Current Rating Considerations: The MBRF2545CT is rated for 25 A average rectified current per diode. Substitute parts are grouped into three categories based on current capacity:

Parametric Equivalent (25 A rated): MBRF2545CTHC0G maintains identical electrical specifications and current rating, providing direct replacement capability.
Lower Current Alternatives (7.5 A to 15 A rated): Parts including MBRF1545CT-E3/45, MBRF1545CTHE3/45, MBRF2045CT-E3/45, MBRF2045CTHE3/45, MBRF30H45CT-E3/45, and MBRF30H45CTHE3/45 share the same voltage rating, package, and configuration but with reduced current capacity. These are suitable only for applications where the circuit current requirement does not exceed the substitute part's rating.
Lower Current Alternatives (5 A rated): VFT1045C-M3/4W operates at 45 V with the same package configuration but is limited to 5 A operation.

All substitute parts maintain the same TO-220-3 Full Pack, Isolated Tab package and ITO-220AB supplier device package, ensuring mechanical and thermal interface compatibility.

Parameter Comparison

Parameter	MBRF2545CT	MBRF2545CTHC0G	MBRF2545CT-E3/45	MBRF30H45CT-E3/45	MBRF2045CT-E3/45	MBRF1545CT-E3/45	VFT1045C-M3/4W
Diode Configuration	1 Pair Common Cathode	1 Pair Common Cathode	1 Pair Common Cathode	1 Pair Common Cathode	1 Pair Common Cathode	1 Pair Common Cathode	1 Pair Common Cathode
Technology	Schottky	Schottky	Schottky	Schottky	Schottky	Schottky	Schottky
Voltage - DC Reverse (Vr) (Max)	45 V	45 V	45 V	45 V	45 V	45 V	45 V
Current - Average Rectified (Io) (per Diode)	25 A	25 A	12.5 A	15 A	10 A	7.5 A	5 A
Voltage - Forward (Vf) (Max) @ If	820 mV @ 12.5 A	820 mV @ 12.5 A	820 mV @ 30 A	620 mV @ 15 A	650 mV @ 10 A	570 mV @ 7.5 A	580 mV @ 5 A
Speed	Fast Recovery ≤ 500ns, > 200mA (Io)	Fast Recovery ≤ 500ns, > 200mA (Io)	Fast Recovery ≤ 500ns, > 200mA (Io)	Fast Recovery ≤ 500ns, > 200mA (Io)	Fast Recovery ≤ 500ns, > 200mA (Io)	Fast Recovery ≤ 500ns, > 200mA (Io)	Fast Recovery ≤ 500ns, > 200mA (Io)
Current - Reverse Leakage @ Vr	2 mA @ 45 V	2 mA @ 45 V	200 µA @ 45 V	80 µA @ 45 V	100 µA @ 45 V	100 µA @ 45 V	500 µA @ 45 V
Operating Temperature - Junction	-55°C ~ 150°C	-55°C ~ 150°C	-65°C ~ 150°C	-65°C ~ 175°C	-65°C ~ 150°C	-65°C ~ 150°C	-40°C ~ 150°C
Package / Case	TO-220-3 Full Pack, Isolated Tab	TO-220-3 Full Pack, Isolated Tab	TO-220-3 Full Pack, Isolated Tab	TO-220-3 Full Pack, Isolated Tab	TO-220-3 Full Pack, Isolated Tab	TO-220-3 Full Pack, Isolated Tab	TO-220-3 Full Pack, Isolated Tab
Supplier Device Package	ITO-220AB	ITO-220AB	ITO-220AB	ITO-220AB	ITO-220AB	ITO-220AB	ITO-220AB
RoHS Status	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant
Moisture Sensitivity Level (MSL)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)

Engineering Selection Recommendations

Primary Equivalent: MBRF2545CTHC0G is the parametric equivalent to MBRF2545CT, offering identical electrical specifications and current rating. This part is currently active in production status and carries AEC-Q101 automotive qualification, providing enhanced reliability assurance for critical applications.

Secondary Equivalents (Reduced Current Rating): MBRF2545CT-E3/45 provides equivalent electrical performance at 12.5 A rated current and is available in active production status. This part is suitable for applications where circuit current does not exceed 12.5 A per diode.

MBRF30H45CT-E3/45 and MBRF30H45CTHE3/45 are rated for 15 A and feature an extended operating temperature range to 175°C, with AEC-Q101 automotive qualification available. These parts are suitable for applications requiring 15 A or less per diode.

MBRF2045CT-E3/45 and MBRF2045CTHE3/45 are rated for 10 A and are available in active production with AEC-Q101 automotive qualification. These parts are suitable for applications requiring 10 A or less per diode.

MBRF1545CT-E3/45 and MBRF1545CTHE3/45 are rated for 7.5 A and are available in active production with AEC-Q101 automotive qualification. These parts are suitable for applications requiring 7.5 A or less per diode.

Lower Current Alternative: VFT1045C-M3/4W is rated for 5 A and is part of the TMBS® series. This part is suitable only for applications requiring 5 A or less per diode.

All substitute parts maintain ROHS3 compliance, MSL 1 rating, and identical package configuration (TO-220-3 Full Pack, Isolated Tab, ITO-220AB).

Frequently Asked Questions (FAQ)

Q: Can MBRF2545CTHC0G be used as a direct replacement for MBRF2545CT?

A: Yes. MBRF2545CTHC0G is a parametric equivalent with identical voltage rating (45 V), current rating (25 A), forward voltage characteristics (820 mV @ 12.5 A), and package configuration (TO-220-3 Full Pack, Isolated Tab). The primary difference is that MBRF2545CTHC0G is in active production status with AEC-Q101 automotive qualification, whereas MBRF2545CT is discontinued.

Q: What is the difference between MBRF2545CT-E3/45 and MBRF2545CT?

A: Both parts share the same 45 V voltage rating and TO-220-3 Full Pack, Isolated Tab package. The key difference is current rating: MBRF2545CT-E3/45 is rated for 12.5 A average rectified current per diode, while MBRF2545CT is rated for 25 A. MBRF2545CT-E3/45 is in active production status.

Q: Can lower-rated current parts such as MBRF2045CT-E3/45 or MBRF1545CT-E3/45 be used in place of MBRF2545CT?

A: Lower-rated current parts can be used only if the circuit current requirement does not exceed the substitute part's rating. MBRF2045CT-E3/45 is limited to 10 A, and MBRF1545CT-E3/45 is limited to 7.5 A. Using a lower-rated part in a circuit requiring 25 A will result in component failure or thermal damage.

Q: Are all substitute parts compatible with the same PCB footprint?

A: Yes. All listed substitute parts use the TO-220-3 Full Pack, Isolated Tab package (ITO-220AB) with through-hole mounting, ensuring mechanical and thermal interface compatibility with the original MBRF2545CT footprint.

Q: What is the significance of AEC-Q101 qualification on substitute parts?

A: AEC-Q101 is an automotive qualification standard. Parts carrying this qualification (such as MBRF2545CTHC0G, MBRF1545CTHE3/45, MBRF2045CTHE3/45, MBRF30H45CTHE3/45) have undergone additional reliability testing and are suitable for automotive and high-reliability applications.

Q: How do reverse leakage current specifications differ among substitute parts?

A: Reverse leakage current varies across substitute parts. MBRF2545CT specifies 2 mA @ 45 V, while MBRF2545CT-E3/45 specifies 200 µA @ 45 V, MBRF30H45CT-E3/45 specifies 80 µA @ 45 V, and VFT1045C-M3/4W specifies 500 µA @ 45 V. Lower reverse leakage is generally preferable for low-power applications.

Q: What is the operating temperature range difference between MBRF2545CT and MBRF30H45CT-E3/45?

A: MBRF2545CT operates from -55°C to 150°C, while MBRF30H45CT-E3/45 operates from -65°C to 175°C. The extended upper temperature limit of MBRF30H45CT-E3/45 provides additional thermal margin for high-temperature applications.

Q: Are all substitute parts RoHS3 compliant?

A: Yes. All listed substitute parts carry ROHS3 compliance status, ensuring compatibility with RoHS3 regulatory requirements.

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