MBR1045CT-Y Equivalent & Substitute Parts

Part Overview

The MBR1045CT-Y is a Schottky diode array manufactured by Taiwan Semiconductor Corporation, configured as a 1 Pair Common Cathode device rated for 45 V DC reverse voltage and 10 A average rectified current per diode. The component is packaged in TO-220-3 through-hole configuration and is currently in active product status with 840 pieces in stock.

Substitute parts are identified to address application requirements including higher current ratings, alternative manufacturer sourcing, or specific compliance and availability considerations. The following equivalent devices maintain core electrical characteristics while offering variations in current capacity, voltage ratings, and manufacturer specifications.

Substiute Parts

MBR1045CT-Y

Taiwan Semiconductor CorporationIn Stock: 859MBR1045CT-Y Datasheet

Current PartRFQ

MBR1045CTP

SMC Diode SolutionsIn Stock: 1572MBR1045CTP Datasheet

DirectRFQ

MBR2545CTG

onsemiIn Stock: 15334MBR2545CTG Datasheet

SimilarRFQ

MBR2550CT

Diodes IncorporatedIn Stock: 3201MBR2550CT Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the MBR1045CT-Y is determined by the following criteria:

Core Compatibility Requirements:

• Diode Configuration: 1 Pair Common Cathode
• Technology: Schottky
• Mounting Type: Through Hole
• Package / Case: TO-220-3
• Voltage - DC Reverse (Vr) (Max): 45 V or higher
• Speed: Fast Recovery ≤ 500 ns, > 200 mA (Io)

Allowable Parameter Variations:

• Current - Average Rectified (Io) (per Diode): Equal to or greater than 10 A
• Voltage - Forward (Vf) (Max) @ If: Within acceptable forward voltage range for Schottky technology
• Current - Reverse Leakage @ Vr: Acceptable within Schottky device specifications
• Operating Temperature - Junction: Equal to or exceeding −55 to 150 °C range

Substitute parts are grouped into two categories: Direct Manufacturer Substitutes (same base product line with package variations) and Similar Manufacturer Substitutes (equivalent electrical performance with higher current ratings or voltage specifications).

Parameter Comparison

Engineering Selection Recommendations

MBR1045CTP (SMC Diode Solutions)

This direct substitute maintains identical voltage and temperature specifications as the MBR1045CT-Y. Current rating is not specified in available documentation. Forward voltage is specified at 5 A rather than 10 A. This part is ROHS3 compliant and currently active. Selection is appropriate for applications requiring SMC Diode Solutions sourcing or when manufacturer diversification is required. Higher inventory availability (1547 pieces) supports supply chain continuity.

MBR2545CTG (onsemi)

This substitute provides higher current capacity (15 A versus 10 A) at the same 45 V reverse voltage rating. Forward voltage is lower (620 mV @ 15 A) compared to the main part. Operating temperature range is extended (−65 to 175 °C). This part is ROHS3 compliant, REACH Unaffected, and currently active. Selection is appropriate for applications requiring higher current handling or extended temperature operation. Highest inventory availability (15312 pieces) supports immediate procurement.

MBR2550CT (Diodes Incorporated)

This substitute provides higher current capacity (15 A) and higher reverse voltage rating (50 V). Forward voltage is higher (750 mV @ 15 A). Operating temperature range is −65 to 150 °C. This part is ROHS3 compliant but marked as Obsolete. Selection is not recommended for new designs due to obsolete product status. Existing inventory (3150 pieces) may support legacy system maintenance only.

Frequently Asked Questions (FAQ)

Q: Can MBR1045CTP be used as a direct replacement for MBR1045CT-Y?

A: MBR1045CTP maintains identical voltage rating (45 V), temperature range (−55 to 150 °C), and package configuration (TO-220-3). However, the current rating for MBR1045CTP is not specified in available documentation, and forward voltage is specified at 5 A rather than 10 A. Verification against specific application current requirements is necessary before selection.

Q: What is the primary advantage of MBR2545CTG over MBR1045CT-Y?

A: MBR2545CTG provides 50% higher current capacity (15 A versus 10 A) at the same 45 V reverse voltage rating. Forward voltage is lower (620 mV @ 15 A), resulting in reduced power dissipation. Operating temperature range is extended to −65 to 175 °C. These characteristics make MBR2545CTG suitable for applications requiring higher current handling or wider temperature operation.

Q: Why is MBR2550CT listed as a substitute if it is obsolete?

A: MBR2550CT is included in the substitute list based on provided manufacturer data indicating it as a historical equivalent. However, its Obsolete product status makes it unsuitable for new designs. This part is retained in documentation for reference purposes only, particularly for legacy system maintenance or repair applications where existing inventory may be available.

Q: Are all substitute parts compatible with the same PCB footprint?

A: All substitute parts listed use the TO-220-3 package configuration with through-hole mounting. Physical footprint compatibility is maintained across all alternatives. Pin configuration remains consistent as 1 Pair Common Cathode diode array in all listed parts.

Q: What compliance certifications apply to all substitute parts?

A: All substitute parts are ROHS3 compliant. MBR2545CTG is REACH Unaffected. MBR1045CTP and MBR2550CT are REACH Affected. All parts carry ECCN classification EAR99 and HTSUS code 8541.10.0080. Compliance verification against specific regulatory requirements for the target application is required.

Q: How does reverse leakage current differ among the substitute options?

A: MBR1045CT-Y specifies 100 µA @ 45 V. MBR1045CTP specifies 1 mA @ 45 V (10 times higher). MBR2545CTG specifies 200 µA @ 45 V (2 times higher). MBR2550CT specifies 1 mA @ 50 V. Higher reverse leakage may impact applications sensitive to leakage current characteristics. Selection should account for specific circuit requirements.