MBR2045CT-E3/45 Equivalent & Substitute Parts

Part Overview

The MBR2045CT-E3/45 is a Schottky diode array with 1 pair common cathode configuration, rated for 45 V DC reverse voltage and 10 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 is classified as obsolete. Due to its obsolete product status, equivalent and substitute parts from active manufacturers are necessary for new designs and ongoing production requirements. Suitable alternatives maintain the core electrical characteristics while offering improved availability and active manufacturer support.

Substiute Parts

MBR2045CT-E3/45

Vishay General Semiconductor - Diodes DivisionIn Stock: 1710MBR2045CT-E3/45 Datasheet

Current PartRFQ

MBR2040CT

Diodes IncorporatedIn Stock: 1542MBR2040CT Datasheet

MFR RecommendedRFQ

MBR2045CT-BP

Micro Commercial CoIn Stock: 1122MBR2045CT-BP Datasheet

MFR RecommendedRFQ

MBR20L45CTG

onsemiIn Stock: 1813MBR20L45CTG Datasheet

MFR RecommendedRFQ

MBR2545CTG

onsemiIn Stock: 15334MBR2545CTG Datasheet

MFR RecommendedRFQ

STPS2045CT

STMicroelectronicsIn Stock: 25174STPS2045CT Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the MBR2045CT-E3/45 is determined by the following critical parameters:

Mandatory Matching Parameters:

• Diode Configuration: 1 Pair Common Cathode
• Technology: Schottky
• Mounting Type: Through Hole
• Package / Case: TO-220-3

Electrical Performance Parameters (Allowable Ranges):

• Voltage - DC Reverse (Vr) (Max): 45 V or greater
• Current - Average Rectified (Io) (per Diode): 10 A or greater
• Speed: Fast Recovery ≤ 500ns, > 200mA (Io)
• Voltage - Forward (Vf) (Max) @ If: Lower values preferred for efficiency
• Current - Reverse Leakage @ Vr: Lower values preferred for performance

Compliance Parameters:

• RoHS Status: ROHS3 Compliant
• REACH Status: REACH Unaffected
• ECCN: EAR99

Substitute parts must maintain identical package and configuration while meeting or exceeding the electrical specifications of the original component. Parts with higher current ratings, equal or higher voltage ratings, and lower forward voltage drops are considered direct substitutes.

Parameter Comparison

Engineering Selection Recommendations

Primary Recommendation: STPS2045CT (STMicroelectronics)

The STPS2045CT is the preferred substitute for the MBR2045CT-E3/45. This part maintains identical electrical specifications (45 V, 10 A) and package format (TO-220-3) while offering active product status. The STPS2045CT demonstrates superior forward voltage performance (570 mV @ 10 A versus 650 mV @ 10 A), resulting in improved efficiency. The component is ROHS3 compliant, REACH unaffected, and maintains fast recovery characteristics. With 25,100 units in stock, supply continuity is assured.

Secondary Recommendation: MBR2545CTG (onsemi)

The MBR2545CTG provides enhanced current capability (15 A versus 10 A) while maintaining 45 V reverse voltage rating and TO-220-3 packaging. This part is active and offers extended operating temperature range (-65 to 175°C). The higher current rating provides design margin for applications requiring increased thermal headroom. ROHS3 compliance and REACH unaffected status are confirmed. Stock availability is excellent (15,312 units).

Alternative Recommendation: MBR2045CT-BP (Micro Commercial Co)

The MBR2045CT-BP matches the original part's voltage and configuration specifications (45 V, 1 Pair Common Cathode, TO-220-3). This part is active and maintains REACH unaffected status. Current rating is increased to 20 A, providing additional design margin. Inventory availability is adequate (1,093 units).

Not Recommended: MBR2040CT (Diodes Incorporated)

The MBR2040CT has reduced reverse voltage rating (40 V versus 45 V), which does not meet the original specification requirement. Although current rating is increased to 20 A, the voltage limitation makes this part unsuitable for direct substitution in applications requiring 45 V operation.

Not Recommended: MBR20L45CTG (onsemi)

The MBR20L45CTG is classified as obsolete, eliminating the primary advantage of substitution. Additionally, reverse leakage current is elevated (500 µA @ 45 V versus 100 µA @ 45 V), indicating inferior performance characteristics compared to active alternatives.

Frequently Asked Questions (FAQ)

Q: Can MBR2040CT be used as a substitute for MBR2045CT-E3/45?

A: No. The MBR2040CT has a maximum reverse voltage rating of 40 V, which is below the 45 V specification of the original part. Direct substitution is not permissible in applications requiring 45 V operation.

Q: What is the primary advantage of STPS2045CT over the original MBR2045CT-E3/45?

A: The STPS2045CT maintains identical electrical specifications and packaging while offering active product status and superior forward voltage performance (570 mV @ 10 A versus 650 mV @ 10 A). This results in lower power dissipation and improved efficiency.

Q: Are all substitute parts RoHS3 compliant?

A: STPS2045CT, MBR2040CT, MBR20L45CTG, and MBR2545CTG are confirmed ROHS3 compliant. MBR2045CT-BP does not specify RoHS status in the provided data.

Q: Can MBR2545CTG be used in place of MBR2045CT-E3/45?

A: Yes. The MBR2545CTG maintains the 45 V reverse voltage rating and TO-220-3 package format. The increased current rating (15 A versus 10 A) and extended temperature range (-65 to 175°C) provide enhanced performance margins. This part is active and widely available.

Q: What is the difference between TO-220-3 and TO-220AB packaging?

A: Both designations refer to the same physical TO-220-3 package format. TO-220AB is an alternative supplier designation for the same package. The MBR2045CT-BP uses the TO-220AB supplier designation while maintaining TO-220-3 package compatibility.

Q: Why is MBR20L45CTG not recommended despite matching voltage and current specifications?

A: The MBR20L45CTG is classified as obsolete, which defeats the purpose of finding an active substitute. Additionally, reverse leakage current is significantly higher (500 µA @ 45 V versus 100 µA @ 45 V), indicating degraded performance characteristics.

Q: Are all substitute parts REACH unaffected?

A: Yes. All substitute parts listed (STPS2045CT, MBR2040CT, MBR2045CT-BP, MBR20L45CTG, and MBR2545CTG) are confirmed REACH unaffected.

Q: What is the significance of fast recovery speed in these Schottky diodes?

A: Fast recovery speed (≤ 500ns, > 200mA) indicates rapid switching capability, which is essential for high-frequency rectification and switching applications. All listed parts maintain this specification.

Q: Can MBR2045CT-BP be used in high-temperature applications?

A: The MBR2045CT-BP has a maximum junction temperature of 150°C. For applications requiring extended temperature operation, MBR2545CTG (175°C maximum) or STPS2045CT (175°C maximum) are more suitable.

Q: What inventory considerations should guide part selection?

A: STPS2045CT offers the highest inventory availability (25,100 units), followed by MBR2545CTG (15,312 units). Both parts ensure supply continuity for production requirements.