MBRF2545CTHE3/45 Equivalent & Substitute Parts

Part Overview

The MBRF2545CTHE3/45 is a Schottky diode array manufactured by Vishay General Semiconductor - Diodes Division. This component features a 1 Pair Common Cathode configuration with a maximum reverse voltage of 45 V and average rectified current of 12.5 A per diode. The part is housed in a TO-220-3 Full Pack with isolated tab for through-hole mounting applications.

The MBRF2545CTHE3/45 is classified as obsolete. Identifying equivalent and substitute parts is necessary to maintain design continuity, ensure supply chain availability, and support ongoing production requirements for applications utilizing this diode array.

Substiute Parts

MBRF2545CTHE3/45

Vishay General Semiconductor - Diodes DivisionIn Stock: 1123MBRF2545CTHE3/45 Datasheet

Current PartRFQ

V30D45CHM3_A/I

Vishay General Semiconductor - Diodes DivisionIn Stock: 865V30D45CHM3_A/I Datasheet

MFR RecommendedRFQ

MBRF2545CTG

onsemiIn Stock: 17482MBRF2545CTG Datasheet

DirectRFQ

RB225T-40

Rohm SemiconductorIn Stock: 803RB225T-40 Datasheet

MFR RecommendedRFQ

STPS30L45CFP

STMicroelectronicsIn Stock: 1695STPS30L45CFP Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the MBRF2545CTHE3/45 is determined by the following critical parameters:

Electrical Compatibility Requirements:

• Diode configuration must be 1 Pair Common Cathode
• Technology must be Schottky
• Maximum reverse voltage (Vr) must be ≥ 45 V
• Average rectified current (Io) per diode must be ≥ 12.5 A
• Speed classification must be Fast Recovery ≤ 500ns, > 200mA (Io)

Mechanical and Environmental Requirements:

• Mounting type must be Through Hole for direct PCB compatibility
• Operating temperature range must encompass the application requirements
• Automotive grade and AEC-Q101 qualification are required for automotive applications
• RoHS3 compliance is mandatory

Package Considerations:

• TO-220-3 Full Pack configuration is the primary mounting standard for this application class
• Surface mount alternatives (TO-263-3, D2PAK) are available but require PCB redesign

Substitute parts are grouped into two categories: direct pin-compatible replacements maintaining the TO-220-3 through-hole package, and functionally equivalent alternatives with different package types requiring design modification.

Parameter Comparison

Engineering Selection Recommendations

Direct Pin-Compatible Replacement (TO-220-3 Through Hole):

The MBRF2545CTG manufactured by onsemi is the most direct substitute for the MBRF2545CTHE3/45. Both parts share identical electrical specifications: 45 V maximum reverse voltage, 12.5 A average rectified current per diode, and TO-220-3 Full Pack through-hole mounting. The MBRF2545CTG is currently in active production status with high inventory availability (17,400 pcs). This part maintains the same reverse leakage current specification (200 µA @ 45 V) and fast recovery speed classification. The extended operating temperature range (-65°C ~ 175°C) of the MBRF2545CTG provides additional thermal margin compared to the original part.

Higher Current Capacity Alternatives (TO-220-3 Through Hole):

The STPS30L45CFP from STMicroelectronics and V30D45CHM3_A/I from Vishay both provide increased current capacity (15 A per diode) while maintaining the 45 V reverse voltage rating and fast recovery speed. The STPS30L45CFP is housed in TO-220-3 Full Pack through-hole configuration and is actively produced with 1,599 pcs in stock. This part offers improved forward voltage characteristics (550 mV @ 15 A) compared to the original specification. The V30D45CHM3_A/I is available in surface mount TO-263-3 D2PAK configuration and requires PCB redesign for implementation.

Lower Voltage Alternative (TO-220-3 Through Hole):

The RB225T-40 from Rohm Semiconductor provides 15 A current capacity in TO-220-3 through-hole package but operates at a maximum reverse voltage of 40 V. This part is suitable only for applications where the 45 V rating is not a critical requirement. The RB225T-40 is actively produced with 768 pcs in stock.

Automotive and Compliance Considerations:

For applications requiring automotive-grade components with AEC-Q101 qualification, the V30D45CHM3_A/I from Vishay maintains both certifications. The MBRF2545CTG from onsemi does not specify automotive grade or AEC-Q101 qualification in the provided data and should be evaluated against specific application requirements.

Frequently Asked Questions (FAQ)

Q: Can the MBRF2545CTG directly replace the MBRF2545CTHE3/45 without PCB modifications?

A: Yes. The MBRF2545CTG is pin-compatible and uses the same TO-220-3 Full Pack through-hole package. Both parts have identical electrical specifications for reverse voltage (45 V) and average rectified current (12.5 A per diode). No PCB layout changes are required.

Q: What is the difference between the MBRF2545CTHE3/45 and STPS30L45CFP?

A: Both parts operate at 45 V maximum reverse voltage and use TO-220-3 through-hole packaging. The primary difference is current capacity: the MBRF2545CTHE3/45 is rated for 12.5 A per diode, while the STPS30L45CFP is rated for 15 A per diode. The STPS30L45CFP also features lower forward voltage (550 mV @ 15 A). These differences make the STPS30L45CFP suitable for higher-current applications.

Q: Why is the V30D45CHM3_A/I listed as a substitute if it uses a different package?

A: The V30D45CHM3_A/I is functionally equivalent in electrical specifications (45 V, 15 A, Schottky, fast recovery, automotive grade, AEC-Q101). However, it uses TO-263-3 D2PAK surface mount packaging instead of through-hole TO-220-3. This part requires PCB redesign and is suitable only for new designs or board revisions.

Q: Is the RB225T-40 suitable as a direct replacement?

A: The RB225T-40 is not a direct replacement due to its 40 V maximum reverse voltage rating, which is lower than the original 45 V specification. It is suitable only for applications where the lower voltage rating does not compromise circuit performance or safety margins.

Q: What are the key parameters that determine substitution compatibility?

A: Substitution compatibility is determined by: (1) Diode configuration (1 Pair Common Cathode), (2) Technology (Schottky), (3) Maximum reverse voltage ≥ 45 V, (4) Average rectified current ≥ 12.5 A per diode, (5) Fast recovery speed classification, (6) Mounting type (through-hole for direct replacement), and (7) Compliance certifications (RoHS3, automotive grade, and AEC-Q101 where required).

Q: Are there inventory considerations when selecting a substitute?

A: Yes. The MBRF2545CTG has the highest inventory availability (17,400 pcs), followed by STPS30L45CFP (1,599 pcs) and V30D45CHM3_A/I (853 pcs). The original MBRF2545CTHE3/45 has 1,079 pcs in stock but is obsolete. Inventory levels should be considered for long-term supply chain planning.

Q: What is the significance of the isolated tab in the MBRF2545CTHE3/45 package?

A: The isolated tab in the TO-220-3 Full Pack, Isolated Tab configuration provides electrical isolation between the tab and the diode cathode. This allows the tab to be connected to a heat sink without creating an electrical path to the cathode. The MBRF2545CTG uses standard TO-220-3 Full Pack without isolated tab specification, which may affect thermal management design considerations.