SBR2045CT Equivalent & Substitute Parts Reference

Part Overview

The SBR2045CT is a Schottky diode array manufactured by SMC Diode Solutions, configured as 1 pair common cathode with 45 V reverse voltage rating in TO-220-3 through-hole package. This component is currently in active product status with 23,581 pieces in stock inventory.

Substitute parts become necessary when the primary part reaches end-of-life status, inventory depletion, or when design requirements permit operation within the electrical and mechanical parameters of alternative qualified components. Two substitute parts are identified for the SBR2045CT based on matching core electrical specifications and package compatibility.

Substiute Parts

SBR2045CT

SMC Diode SolutionsIn Stock: 23641SBR2045CT Datasheet

Current PartRFQ

MBR20L45CTG

onsemiIn Stock: 1813MBR20L45CTG Datasheet

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MBR2545CTG

onsemiIn Stock: 15334MBR2545CTG Datasheet

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Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the SBR2045CT is determined by the following mandatory parameters:

Core Electrical Compatibility:

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

Compliance Requirements:

• RoHS3 Compliant status
• ECCN: EAR99
• HTSUS: 8541.10.0080

The two identified substitutes, MBR20L45CTG and MBR2545CTG, both satisfy these core parameters. Variations in forward voltage, reverse leakage current, and current rating represent allowable differences within the Schottky diode array category for this voltage class and package type.

Parameter Comparison

Engineering Selection Recommendations

MBR20L45CTG (onsemi): This substitute carries an Obsolete product status designation. While electrical parameters are compatible with the SBR2045CT, the obsolete classification indicates this part is no longer in active production. Selection of this substitute should be limited to applications requiring immediate component availability from existing inventory (1,792 pieces) where long-term supply continuity is not a design requirement.

MBR2545CTG (onsemi): This substitute maintains Active product status with higher current rating (15 A per diode) and extended operating temperature range (-65°C ~ 175°C versus -55°C ~ 150°C). The MBR2545CTG is suitable for applications where the SBR2045CT reaches end-of-life or inventory exhaustion. This part provides superior thermal performance and higher current capacity within the same TO-220-3 package footprint. Inventory availability is substantial at 15,312 pieces.

Both substitutes are ROHS3 compliant and carry identical ECCN and HTSUS classifications as the main part, confirming regulatory equivalence for procurement and export purposes.

Frequently Asked Questions (FAQ)

Q: Can MBR20L45CTG and MBR2545CTG be used interchangeably with SBR2045CT in the same circuit?

A: Both parts share the same diode configuration (1 Pair Common Cathode), voltage rating (45 V), package (TO-220-3), and fast recovery speed classification. Pin-to-pin compatibility is confirmed. However, MBR20L45CTG carries Obsolete status, making it unsuitable for new designs or long-term production. MBR2545CTG is the preferred substitute for active applications.

Q: What are the differences in forward voltage between these parts?

A: SBR2045CT specifies 750 mV maximum forward voltage at 10 A. MBR20L45CTG specifies 500 mV at 10 A, and MBR2545CTG specifies 620 mV at 15 A. Lower forward voltage reduces power dissipation in rectification applications. These differences are within normal manufacturing variation for Schottky diode arrays in this voltage class.

Q: Are there thermal considerations when substituting MBR2545CTG for SBR2045CT?

A: MBR2545CTG extends the maximum junction temperature to 175°C compared to 150°C for SBR2045CT. This provides additional thermal margin in high-temperature environments. The higher current rating (15 A) also indicates improved thermal design. Both parts use identical TO-220-3 package, so thermal interface requirements remain unchanged.

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

A: SBR2045CT specifies 1 mA reverse leakage at 45 V. MBR20L45CTG specifies 500 µA, and MBR2545CTG specifies 200 µA. Lower reverse leakage reduces standby power consumption and improves efficiency in low-current applications. These variations are characteristic of different manufacturing processes within the Schottky diode category.

Q: Why is MBR20L45CTG marked as Obsolete?

A: Obsolete status indicates the manufacturer (onsemi) has discontinued active production. Existing inventory may be available from distributors, but no future production is guaranteed. For new designs or applications requiring long-term supply assurance, MBR2545CTG is the appropriate substitute choice.

Q: Are all three parts RoHS3 compliant?

A: Yes. SBR2045CT, MBR20L45CTG, and MBR2545CTG all carry ROHS3 Compliant designation, confirming compliance with restricted substance directives for procurement in regulated markets.

Q: Can these parts be used in applications exceeding 45 V reverse voltage?

A: No. All three parts are rated for maximum 45 V DC reverse voltage. Operation above this rating will result in component failure. Applications requiring higher voltage ratings require selection of alternative diode arrays with higher voltage classifications.