MBRF1545CTHE3/45 Equivalent & Substitute Parts

Part Overview

The MBRF1545CTHE3/45 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 with 7.5 A average rectified current per diode. The device is packaged in a TO-220-3 Full Pack with isolated tab and is designed for through-hole mounting applications. The part maintains Active product status and carries AEC-Q101 automotive qualification with ROHS3 compliance. Equivalent and substitute parts are identified to address inventory availability, packaging preferences, or performance requirements within the specified electrical and mechanical parameters.

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)	7.5 A
Voltage - Forward (Vf) (Max) @ If	570 mV @ 7.5 A
Speed	Fast Recovery ≤ 500 ns, > 200 mA (Io)
Current - Reverse Leakage @ Vr	100 µA @ 45 V
Operating Temperature - Junction	-65°C ~ 150°C
Mounting Type	Through Hole
Package / Case	TO-220-3 Full Pack, Isolated Tab
RoHS Status	ROHS3 Compliant
Product Status	Active

Substitute Part Grouping Explanation

Substitute parts for the MBRF1545CTHE3/45 are classified based on strict electrical and mechanical compatibility within the following criteria:

Parametric Equivalents maintain identical electrical specifications across all critical parameters: 45 V DC reverse voltage rating, 7.5 A average rectified current per diode, 570 mV forward voltage at 7.5 A, fast recovery Schottky technology, 100 µA reverse leakage current, and -65°C to 150°C junction temperature range. These parts differ only in packaging format (tube versus full pack) and are sourced from the same manufacturer.

Manufacturer Recommended Substitutes share the same diode configuration, technology, voltage rating, and mounting type but operate at higher current ratings (12.5 A versus 7.5 A) and extended temperature ranges. These parts are sourced from alternative manufacturers and are suitable for applications where the main part is unavailable and higher current capacity is acceptable within the circuit design.

The following key parameters determine substitution eligibility:

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

Parameter Comparison

Parameter	MBRF1545CTHE3/45	MBRF1545CT-E3/45	MBRF2545CTG
Manufacturer	Vishay General Semiconductor - Diodes Division	Vishay General Semiconductor - Diodes Division	onsemi
Diode Configuration	1 Pair Common Cathode	1 Pair Common Cathode	1 Pair Common Cathode
Technology	Schottky	Schottky	Schottky
Voltage - DC Reverse (Vr) (Max)	45 V	45 V	45 V
Current - Average Rectified (Io) (per Diode)	7.5 A	7.5 A	12.5 A
Voltage - Forward (Vf) (Max) @ If	570 mV @ 7.5 A	570 mV @ 7.5 A	700 mV @ 12.5 A
Speed	Fast Recovery ≤ 500 ns, > 200 mA (Io)	Fast Recovery ≤ 500 ns, > 200 mA (Io)	Fast Recovery ≤ 500 ns, > 200 mA (Io)
Current - Reverse Leakage @ Vr	100 µA @ 45 V	100 µA @ 45 V	200 µA @ 45 V
Operating Temperature - Junction	-65°C ~ 150°C	-65°C ~ 150°C	-65°C ~ 175°C
Mounting Type	Through Hole	Through Hole	Through Hole
Package / Case	TO-220-3 Full Pack, Isolated Tab	TO-220-3 Full Pack, Isolated Tab	TO-220-3 Full Pack
Supplier Device Package	ITO-220AB	ITO-220AB	TO-220FP
Packaging Format	Full Pack	Tube	Tube
RoHS Status	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant
Product Status	Active	Active	Active

Engineering Selection Recommendations

MBRF1545CT-E3/45 is a direct parametric equivalent suitable for applications requiring identical electrical performance to the MBRF1545CTHE3/45. Both parts are manufactured by Vishay General Semiconductor - Diodes Division and maintain Active product status with ROHS3 compliance. The primary distinction is packaging format: MBRF1545CT-E3/45 is supplied in tube packaging while MBRF1545CTHE3/45 is supplied in full pack format. Selection between these two parts is determined by procurement and inventory management requirements rather than electrical or mechanical considerations. Both parts carry identical electrical specifications and are suitable for direct substitution in circuit applications.

MBRF2545CTG is a manufacturer-recommended substitute manufactured by onsemi within the SWITCHMODE™ series. This part maintains the same 45 V DC reverse voltage rating, diode configuration, Schottky technology, and through-hole TO-220-3 mounting type. The MBRF2545CTG operates at 12.5 A average rectified current per diode compared to 7.5 A for the main part, with corresponding increases in forward voltage (700 mV @ 12.5 A versus 570 mV @ 7.5 A) and reverse leakage current (200 µA @ 45 V versus 100 µA @ 45 V). The operating temperature range extends to 175°C versus 150°C. This part is suitable for substitution in applications where higher current capacity is acceptable and the circuit design accommodates the increased forward voltage drop and leakage characteristics. The MBRF2545CTG carries ROHS3 compliance and Active product status.

Frequently Asked Questions (FAQ)

Q: Can MBRF1545CT-E3/45 be used as a direct replacement for MBRF1545CTHE3/45?

A: Yes. MBRF1545CT-E3/45 is a parametric equivalent with identical electrical specifications. The only difference is packaging format (tube versus full pack). Both parts are manufactured by Vishay General Semiconductor - Diodes Division and carry the same electrical ratings, temperature range, and compliance certifications.

Q: What are the key differences between MBRF1545CTHE3/45 and MBRF2545CTG?

A: The primary differences are current rating, forward voltage, reverse leakage, and manufacturer. MBRF2545CTG is rated for 12.5 A versus 7.5 A, with forward voltage of 700 mV @ 12.5 A versus 570 mV @ 7.5 A. Reverse leakage is 200 µA @ 45 V versus 100 µA @ 45 V. Operating temperature extends to 175°C versus 150°C. Both maintain 45 V DC reverse voltage rating and Schottky technology. MBRF2545CTG is manufactured by onsemi.

Q: Is MBRF2545CTG suitable for applications designed for MBRF1545CTHE3/45?

A: MBRF2545CTG is suitable for substitution provided the circuit design accommodates the higher current rating, increased forward voltage drop, and higher reverse leakage current. The 45 V voltage rating and Schottky technology remain compatible. Circuit thermal and electrical analysis is required to confirm suitability for specific applications.

Q: Are all substitute parts ROHS3 compliant?

A: Yes. MBRF1545CTHE3/45, MBRF1545CT-E3/45, and MBRF2545CTG are all ROHS3 compliant.

Q: What is the difference between ITO-220AB and TO-220FP package designations?

A: ITO-220AB and TO-220FP are both TO-220-3 Full Pack configurations suitable for through-hole mounting. ITO-220AB includes an isolated tab feature, while TO-220FP is a standard full pack variant. Both are mechanically compatible with TO-220-3 mounting footprints.

Q: Are all substitute parts rated for automotive applications?

A: MBRF1545CTHE3/45 carries AEC-Q101 automotive qualification. MBRF1545CT-E3/45 is also manufactured by Vishay General Semiconductor - Diodes Division with equivalent specifications. MBRF2545CTG is manufactured by onsemi and carries ROHS3 compliance; automotive qualification status for this part should be verified against specific application requirements.

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