MBRS3045CT Equivalent & Substitute Parts

Part Overview

The MBRS3045CT is a Schottky diode array manufactured by Taiwan Semiconductor Corporation, configured as 1 pair common cathode with a maximum reverse voltage of 45V and average rectified current of 30A per diode. The device is packaged in TO-263-3 (D2PAK) surface mount configuration and is currently in active product status with ROHS3 compliance.

Substitute parts become necessary when the primary part experiences supply constraints, obsolescence of related variants, or when design requirements permit operation within the electrical and mechanical parameters of alternative manufacturers' offerings. The parts listed below maintain compatibility through identical or superior electrical specifications and identical mechanical packaging.

Substiute Parts

MBRS3045CT

Taiwan Semiconductor CorporationIn Stock: 704MBRS3045CT Datasheet

Current PartRFQ

MBRB3045CT

Vishay General Semiconductor - Diodes DivisionIn Stock: 2512MBRB3045CT Datasheet

DirectRFQ

MBRB2045CT-E3/81

Vishay General Semiconductor - Diodes DivisionIn Stock: 2078MBRB2045CT-E3/81 Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the MBRS3045CT is determined by the following critical parameters that must be maintained or exceeded:

Mandatory Compatibility Parameters:

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

Performance Parameters (Must Equal or Exceed):

• Current - Average Rectified (Io) (per Diode): 30A minimum
• Speed: Fast Recovery ≤ 500ns, > 200mA (Io)
• Operating Temperature - Junction: -55°C to 150°C minimum range

Substitute parts are grouped based on whether they meet these criteria. Parts that maintain all mandatory parameters and equal or exceed performance specifications are classified as direct electrical equivalents. Parts with reduced current ratings or other parameter deviations are noted as having limited substitution applicability.

Parameter Comparison

Engineering Selection Recommendations

MBRB3045CT (Vishay General Semiconductor - Diodes Division):

This part maintains identical voltage rating (45V) and package configuration (TO-263-3, D2PAK) as the MBRS3045CT. However, the average rectified current is rated at 15A per diode, which is 50% of the main part's 30A specification. The forward voltage is lower at 760 mV @ 30A compared to 900 mV @ 30A on the main part. The reverse leakage current is higher at 1 mA @ 45V versus 200 µA @ 45V. The part is marked as obsolete and is not RoHS3 compliant. This part is suitable only for applications where the 15A current rating is sufficient and where RoHS compliance is not required.

MBRB2045CT-E3/81 (Vishay General Semiconductor - Diodes Division):

This part maintains identical voltage rating (45V) and package configuration (TO-263-3, D2PAK) as the MBRS3045CT. The average rectified current is rated at 10A per diode, which is 33% of the main part's 30A specification. The forward voltage is 650 mV @ 10A. The reverse leakage current is 100 µA @ 45V. The part is marked as obsolete but is ROHS3 compliant. This part is suitable only for applications where the 10A current rating is sufficient.

Both substitute parts have reduced current ratings and therefore cannot serve as direct replacements in applications requiring the full 30A per diode capability of the MBRS3045CT. Selection of either substitute requires verification that the application's current requirements do not exceed the substitute part's rating.

Frequently Asked Questions (FAQ)

Q: Can MBRB3045CT be used as a direct replacement for MBRS3045CT?

A: MBRB3045CT shares the same voltage rating (45V), diode configuration (1 Pair Common Cathode), technology (Schottky), and package (TO-263-3, D2PAK). However, the current rating is 15A per diode compared to 30A per diode on the MBRS3045CT. Direct substitution is only possible in applications where the circuit current does not exceed 15A per diode.

Q: Can MBRB2045CT-E3/81 be used as a direct replacement for MBRS3045CT?

A: MBRB2045CT-E3/81 shares the same voltage rating (45V), diode configuration (1 Pair Common Cathode), technology (Schottky), and package (TO-263-3, D2PAK). However, the current rating is 10A per diode compared to 30A per diode on the MBRS3045CT. Direct substitution is only possible in applications where the circuit current does not exceed 10A per diode.

Q: What are the key parameters that determine if a part can substitute for MBRS3045CT?

A: The critical parameters are: diode configuration (1 Pair Common Cathode), technology (Schottky), reverse voltage rating (45V minimum), package type (TO-263-3, D2PAK), mounting type (Surface Mount), and average rectified current (30A minimum per diode). All substitute parts must maintain these specifications to ensure mechanical and electrical compatibility.

Q: Are there compliance differences between the main part and substitutes?

A: Yes. MBRS3045CT is ROHS3 compliant. MBRB3045CT is RoHS non-compliant. MBRB2045CT-E3/81 is ROHS3 compliant. Applications subject to RoHS requirements must use MBRS3045CT or MBRB2045CT-E3/81.

Q: What is the difference in forward voltage between these parts?

A: MBRS3045CT has a maximum forward voltage of 900 mV @ 30A. MBRB3045CT has 760 mV @ 30A. MBRB2045CT-E3/81 has 650 mV @ 10A. Lower forward voltage results in reduced power dissipation in the diode.

Q: How do the reverse leakage currents compare?

A: MBRS3045CT has 200 µA @ 45V. MBRB3045CT has 1 mA @ 45V (5 times higher). MBRB2045CT-E3/81 has 100 µA @ 45V (lower than the main part). Higher reverse leakage increases standby power consumption.

Q: What is the operating temperature range for each part?

A: MBRS3045CT operates from -55°C to 150°C. Both MBRB3045CT and MBRB2045CT-E3/81 operate from -65°C to 150°C, providing a wider low-temperature range.

Q: Are all parts in the same physical package?

A: Yes. All three parts use TO-263-3, D2PAK (2 Leads + Tab), TO-263AB surface mount package, ensuring identical PCB footprint and mounting compatibility.