MBRF2545CT/45 Equivalent & Substitute Parts

Part Overview

The MBRF2545CT/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 12.5 A average rectified current per diode. The device is housed in a TO-220-3 Full Pack with isolated tab package for through-hole mounting applications. The product maintains Active status in the component market. Substitute parts are identified to address inventory availability, extended lead times, or specific application requirements while maintaining electrical and mechanical compatibility within defined parameter ranges.

Substiute Parts

MBRF2545CT/45

Vishay General Semiconductor - Diodes DivisionIn Stock: 1191MBRF2545CT/45 Datasheet

Current PartRFQ

RB225T-40

Rohm SemiconductorIn Stock: 803RB225T-40 Datasheet

MFR RecommendedRFQ

STPS30L45CFP

STMicroelectronicsIn Stock: 1695STPS30L45CFP Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the MBRF2545CT/45 are qualified based on the following electrical and mechanical parameters:

Critical Compatibility Parameters:

• Diode Configuration: 1 Pair Common Cathode (mandatory match)
• Technology: Schottky (mandatory match)
• Mounting Type: Through Hole (mandatory match)
• Package / Case: TO-220-3 Full Pack (mandatory match)
• Voltage - DC Reverse (Vr) (Max): Equal to or greater than 45 V
• Current - Average Rectified (Io) (per Diode): Equal to or greater than 12.5 A
• Speed: Fast Recovery ≤ 500ns, > 200mA (Io) (mandatory match)

Substitute parts must satisfy all mandatory parameters and meet or exceed the electrical ratings for voltage and current. Parts that exceed the original specifications in voltage and current ratings are acceptable as they provide equivalent or enhanced performance within the same physical and functional envelope.

Parameter Comparison

Engineering Selection Recommendations

STPS30L45CFP (STMicroelectronics)

The STPS30L45CFP is the primary substitute for the MBRF2545CT/45. This part maintains identical voltage rating (45 V) and exceeds the current specification (15 A versus 12.5 A). Both devices share the same diode configuration, Schottky technology, fast recovery speed, and TO-220-3 Full Pack package. The STPS30L45CFP carries ROHS3 compliance and Moisture Sensitivity Level 1 (Unlimited), providing regulatory advantages over the original part. Current inventory of 1599 pieces supports immediate availability.

RB225T-40 (Rohm Semiconductor)

The RB225T-40 qualifies as a secondary substitute with the following considerations: The part meets all mandatory parameters including diode configuration, Schottky technology, fast recovery speed, and TO-220-3 Full Pack package. The current rating (15 A) exceeds the original specification. However, the voltage rating (40 V) is below the original 45 V specification. This part is suitable only for applications where the maximum reverse voltage requirement does not exceed 40 V. The RB225T-40 carries ROHS3 compliance with Moisture Sensitivity Level 1 (Unlimited). Current inventory of 768 pieces is available.

Both substitute parts maintain Active product status and are manufactured by established semiconductor suppliers with full regulatory compliance documentation.

Frequently Asked Questions (FAQ)

Q: Can the RB225T-40 be used in all applications where the MBRF2545CT/45 is specified?

A: No. The RB225T-40 has a maximum reverse voltage rating of 40 V compared to the original part's 45 V rating. This part is suitable only for circuits where the maximum reverse voltage does not exceed 40 V. Applications requiring the full 45 V rating must use the STPS30L45CFP or the original MBRF2545CT/45.

Q: What are the key differences between the STPS30L45CFP and the MBRF2545CT/45?

A: Both parts share identical voltage rating (45 V), diode configuration (1 Pair Common Cathode), technology (Schottky), speed (Fast Recovery ≤ 500ns), and package type (TO-220-3 Full Pack). The STPS30L45CFP provides higher current rating (15 A versus 12.5 A) and carries ROHS3 compliance. The original part is RoHS non-compliant.

Q: Are the TO-220-3 Full Pack packages physically interchangeable?

A: The STPS30L45CFP and RB225T-40 use standard TO-220-3 Full Pack packages compatible with through-hole PCB layouts designed for the MBRF2545CT/45. The MBRF2545CT/45 features an isolated tab variant, while the substitute parts use standard tab configurations. Verify PCB thermal design and tab isolation requirements before substitution.

Q: What is the significance of the reverse leakage current differences?

A: The MBRF2545CT/45 specifies 200 µA reverse leakage at 45 V. The STPS30L45CFP specifies 400 µA at 45 V, and the RB225T-40 specifies 500 µA at 40 V. Higher reverse leakage increases power dissipation in reverse bias conditions. Applications sensitive to leakage current performance should evaluate this parameter against circuit requirements.

Q: Does the higher current rating of substitute parts affect circuit compatibility?

A: No. The substitute parts with higher current ratings (15 A) are fully compatible with circuits designed for 12.5 A operation. The higher rating provides additional design margin and does not alter electrical behavior at the original operating current.

Q: What compliance advantages do the substitute parts offer?

A: Both the STPS30L45CFP and RB225T-40 carry ROHS3 compliance status, whereas the original MBRF2545CT/45 is RoHS non-compliant. Both substitute parts have Moisture Sensitivity Level 1 (Unlimited), indicating no moisture sensitivity restrictions. All three parts are REACH Unaffected and classified as EAR99 for export control purposes.