MBRB2545CT-TP Equivalent & Substitute Parts

Part Overview

The MBRB2545CT-TP is a Schottky diode array manufactured by Micro Commercial Co, configured as 1 pair common cathode with a maximum reverse voltage of 45 V and average rectified current of 30 A per diode. The component is housed in a Surface Mount TO-263-3 D2PAK package with 2 leads plus tab configuration. This part is currently in Active product status with 1033 pieces available in stock.

Substitute parts are necessary when the primary component becomes unavailable, when alternative packaging formats are required, or when design specifications permit operation within the electrical parameters of equivalent alternatives. The MBRB2545CT-TP has been identified with one qualified substitute that maintains functional compatibility within defined electrical and mechanical constraints.

Substiute Parts

MBRB2545CT-TP

Micro Commercial CoIn Stock: 1060MBRB2545CT-TP Datasheet

Current PartRFQ

MBRB1545CT-E3/81

Vishay General Semiconductor - Diodes DivisionIn Stock: 3083MBRB1545CT-E3/81 Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the MBRB2545CT-TP is determined by strict adherence to the following electrical and mechanical parameters:

Critical Matching Parameters:

• Diode Configuration: 1 Pair Common Cathode
• Technology: Schottky
• Voltage - DC Reverse (Vr) (Max): 45 V (minimum requirement)
• Package / Case: TO-263-3, D2PAK (2 Leads + Tab), TO-263AB
• Mounting Type: Surface Mount

Allowable Variation Parameters:

• Current - Average Rectified (Io) (per Diode): Equal to or greater than 30 A
• Voltage - Forward (Vf) (Max) @ If: Within acceptable circuit design margins
• Current - Reverse Leakage @ Vr: Within acceptable circuit design margins
• Operating Temperature - Junction: Must encompass or exceed -55°C to 150°C range

The identified substitute MBRB1545CT-E3/81 maintains identical diode configuration, Schottky technology, 45 V reverse voltage rating, and TO-263-3 D2PAK package specification. However, the average rectified current per diode is 7.5 A, which is lower than the primary part's 30 A rating. This substitute is qualified only for applications where the circuit design permits operation at the lower current specification.

Parameter Comparison

Engineering Selection Recommendations

Primary Part Selection: The MBRB2545CT-TP remains the preferred component for new designs and applications requiring 30 A average rectified current per diode. The part maintains Active product status, ensuring long-term availability and supply chain stability. The component is REACH Unaffected and classified under ECCN EAR99, meeting standard regulatory requirements.

Substitute Part Consideration: The MBRB1545CT-E3/81 is qualified as a substitute only when circuit design specifications permit operation at 7.5 A average rectified current per diode. This substitute carries Last Time Buy product status, indicating limited future availability. The substitute exhibits lower reverse leakage current (100 µA versus 200 µA) and an extended operating temperature range (-65°C to 150°C versus -55°C to 150°C), which may provide advantages in specific thermal environments. However, the higher forward voltage drop (840 mV versus 750 mV at 15 A) and reduced current rating must be evaluated against circuit power dissipation and thermal management requirements.

The substitute is supplied in Tape & Reel packaging format, differing from the primary part's Bulk packaging. The substitute is ROHS3 Compliant, providing additional environmental compliance assurance.

Selection Criteria:

• Use MBRB2545CT-TP for applications requiring 30 A current capacity
• Use MBRB1545CT-E3/81 only when circuit design permits 7.5 A operation and Last Time Buy status is acceptable
• Verify packaging format compatibility with assembly processes (Bulk versus Tape & Reel)
• Confirm thermal design accommodates the higher forward voltage drop of the substitute

Frequently Asked Questions (FAQ)

Q: Can the MBRB1545CT-E3/81 be used as a direct replacement for the MBRB2545CT-TP?

A: The MBRB1545CT-E3/81 is mechanically and electrically compatible in terms of package, pinout, and voltage rating. However, it is not a direct replacement for applications requiring 30 A average rectified current per diode. The substitute is rated for 7.5 A per diode and must only be used in circuits designed for this lower current specification.

Q: What are the key differences between these two parts?

A: The primary differences are: (1) Average rectified current per diode: 30 A (main) versus 7.5 A (substitute); (2) Forward voltage drop: 750 mV (main) versus 840 mV (substitute) at 15 A; (3) Reverse leakage current: 200 µA (main) versus 100 µA (substitute) at 45 V; (4) Operating temperature range: -55 to 150°C (main) versus -65 to 150°C (substitute); (5) Product status: Active (main) versus Last Time Buy (substitute); (6) Packaging format: Bulk (main) versus Tape & Reel (substitute).

Q: Are both parts housed in the same package?

A: Yes. Both the MBRB2545CT-TP and MBRB1545CT-E3/81 use the TO-263-3 D2PAK package with 2 leads plus tab configuration. The physical footprint and pinout are identical, allowing for the same PCB layout. However, the packaging format differs: the main part is supplied in Bulk, while the substitute is supplied in Tape & Reel format.

Q: What is the significance of the "Last Time Buy" status for the substitute part?

A: Last Time Buy status indicates that the MBRB1545CT-E3/81 will no longer be manufactured after a specified date. Existing inventory may be available, but future procurement will not be possible. This status should be considered when selecting components for long-term production or field replacement scenarios.

Q: How does the higher forward voltage drop of the substitute affect circuit performance?

A: The substitute exhibits 90 mV higher forward voltage drop (840 mV versus 750 mV at 15 A). In rectifier circuits, this increases power dissipation and heat generation. The impact depends on circuit current levels and thermal design. For low-current applications, the difference may be negligible. For high-current applications, thermal analysis is required to ensure the substitute does not exceed junction temperature limits.

Q: Can I use the substitute in a high-current application?

A: No. The substitute is rated for 7.5 A average rectified current per diode, while the main part is rated for 30 A. Using the substitute in a circuit designed for 30 A operation will result in component failure due to exceeding the current rating.

Q: Are there compliance or regulatory differences between these parts?

A: Both parts are REACH Unaffected and classified under ECCN EAR99. The substitute carries ROHS3 Compliance certification, while the main part's RoHS status is not specified in the provided data. Both parts meet standard regulatory requirements for electronic components.

Q: What should I verify before substituting these parts?

A: Verify that your circuit design operates at or below 7.5 A average rectified current per diode. Confirm that the higher forward voltage drop (840 mV) does not cause unacceptable power dissipation or thermal issues. Verify that the packaging format (Tape & Reel for the substitute) is compatible with your assembly process. Confirm that the Last Time Buy status of the substitute is acceptable for your production timeline and field support requirements.