MBRF2045CT Equivalent & Substitute Parts

Part Overview

The MBRF2045CT is a Schottky diode array in a 1 Pair Common Cathode configuration, rated for 45 V DC reverse voltage and 20 A average rectified current per diode. Manufactured by Taiwan Semiconductor Corporation, this component is housed in a TO-220-3 Full Pack with isolated tab and is currently in active product status. The device features fast recovery characteristics (≤500 ns) and operates across a junction temperature range of -55°C to 150°C.

Equivalent and substitute parts are necessary when the primary part becomes unavailable, when alternative manufacturers are required for supply chain diversification, or when application requirements permit operation within relaxed electrical parameters while maintaining functional compatibility.

Substiute Parts

MBRF2045CT

Taiwan Semiconductor CorporationIn Stock: 36652MBRF2045CT Datasheet

Current PartRFQ

MBRF2045CT

Diodes IncorporatedIn Stock: 36666MBRF2045CT Datasheet

DirectRFQ

MBRF2045CTP

SMC Diode SolutionsIn Stock: 1615MBRF2045CTP Datasheet

DirectRFQ

MBRF1545CT-E3/45

Vishay General Semiconductor - Diodes DivisionIn Stock: 1996MBRF1545CT-E3/45 Datasheet

SimilarRFQ

MBRF2545CT-E3/45

Vishay General Semiconductor - Diodes DivisionIn Stock: 1531MBRF2545CT-E3/45 Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the MBRF2045CT is determined by strict adherence to the following electrical and mechanical parameters:

Critical Parameters for Direct Substitution:

• Diode Configuration: 1 Pair Common Cathode
• Technology: Schottky
• Voltage - DC Reverse (Vr) (Max): 45 V minimum
• Current - Average Rectified (Io) (per Diode): 20 A minimum
• Mounting Type: Through Hole
• Package / Case: TO-220-3 Full Pack, Isolated Tab
• Supplier Device Package: ITO-220AB

Acceptable Variation Parameters:

• Voltage - Forward (Vf): May vary within application tolerance
• Current - Reverse Leakage: May vary within application tolerance
• Operating Temperature Range: May extend beyond specified range
• Manufacturer: Alternative qualified manufacturers permitted

Substitute Categories:

Direct Equivalents: Parts meeting all critical parameters with identical electrical ratings (MBRF2045CTP).

Functional Equivalents: Parts meeting all critical parameters with current ratings between 12.5 A and 20 A at 45 V reverse voltage (MBRF2545CT-E3/45, MBRF1545CT-E3/45).

Non-Equivalent Parts: Parts with voltage ratings exceeding 45 V or current ratings below 12.5 A do not qualify as functional substitutes for applications requiring the full 20 A specification.

Parameter Comparison

Engineering Selection Recommendations

MBRF2045CTP (SMC Diode Solutions)

This part is an active product with identical voltage and forward voltage specifications to the main MBRF2045CT. The TO-220-3 Full Pack, Isolated Tab package and ITO-220AB supplier device package provide mechanical and thermal compatibility. ROHS3 compliance and MSL 1 rating match the primary part. Selection of this substitute is appropriate for applications where current rating specification is not explicitly documented and where REACH Affected status is acceptable.

MBRF2545CT-E3/45 (Vishay General Semiconductor - Diodes Division)

This part is an active product rated for 12.5 A average rectified current at 45 V reverse voltage. The 45 V voltage rating matches the primary specification. The extended operating temperature range (-65°C to 150°C) provides additional thermal margin. ROHS3 compliance and REACH Unaffected status are maintained. This substitute is suitable for applications where the required current does not exceed 12.5 A and where the lower forward voltage at higher current levels (820 mV @ 30 A) is acceptable.

MBRF1545CT-E3/45 (Vishay General Semiconductor - Diodes Division)

This part is an active product rated for 7.5 A average rectified current at 45 V reverse voltage. The 45 V voltage rating matches the primary specification. The extended operating temperature range (-65°C to 150°C) provides additional thermal margin. ROHS3 compliance and REACH Unaffected status are maintained. This substitute is suitable only for applications where the required current does not exceed 7.5 A.

MBRF2045CT (Diodes Incorporated)

This part carries an Obsolete product status and is not recommended for new designs or long-term supply chain planning. The 60 V reverse voltage rating exceeds the primary specification, and the 10 A current rating is below the primary 20 A specification. REACH Affected status differs from the primary part. This part does not qualify as a functional equivalent.

Frequently Asked Questions (FAQ)

Q: Can MBRF2545CT-E3/45 replace MBRF2045CT in all applications?

A: MBRF2545CT-E3/45 is a functional equivalent only for applications where the circuit current requirement does not exceed 12.5 A. The 45 V reverse voltage rating is identical. If the application requires the full 20 A capability of the primary part, MBRF2545CT-E3/45 is not suitable.

Q: What is the significance of the "1 Pair Common Cathode" configuration?

A: This configuration indicates the diode array contains two diodes with a shared cathode terminal. All substitute parts must maintain this same configuration to ensure pin-compatible operation and correct circuit function.

Q: Are all substitute parts mechanically compatible with the primary MBRF2045CT?

A: Yes. All listed substitute parts use the TO-220-3 Full Pack with isolated tab package and ITO-220AB supplier device package, providing identical mechanical fit and thermal interface characteristics.

Q: What does "Fast Recovery ≤500 ns, >200 mA (Io)" mean?

A: This specification indicates the diode exhibits fast recovery behavior with a recovery time of 500 nanoseconds or less when switching from forward to reverse bias at currents exceeding 200 milliamps. All substitute parts meet this specification.

Q: Why is the MBRF2045CT from Diodes Incorporated listed as Obsolete?

A: Obsolete product status indicates the manufacturer has discontinued production and support for this part. New designs should not incorporate obsolete parts due to unavailability and lack of manufacturer support.

Q: What is the difference between REACH Unaffected and REACH Affected status?

A: REACH Unaffected indicates the part is not subject to REACH (Registration, Evaluation, Authorization and Restriction of Chemicals) regulatory requirements. REACH Affected indicates the part may contain substances of concern under REACH regulations. Selection depends on regulatory requirements of the end application and geographic market.

Q: Can MBRF1545CT-E3/45 be used as a direct replacement for MBRF2045CT?

A: MBRF1545CT-E3/45 is not a direct replacement. While it maintains the 45 V reverse voltage rating and identical package, its 7.5 A current rating is significantly lower than the primary part's 20 A specification. Use only in applications where current requirements do not exceed 7.5 A.

Q: What is the significance of the ITO-220AB supplier device package designation?

A: ITO-220AB specifies the exact package variant: TO-220 form factor with isolated tab configuration. This designation ensures thermal and electrical isolation between the tab and the mounting surface, which is critical for applications requiring multiple devices or specific thermal management.

Q: Are there any temperature range differences between substitute parts?

A: Yes. MBRF2545CT-E3/45 and MBRF1545CT-E3/45 operate from -65°C to 150°C, extending the lower temperature limit by 10°C compared to the primary part's -55°C to 150°C range. This extended range may be beneficial in cold environment applications.

Q: What does MSL 1 (Unlimited) indicate?

A: Moisture Sensitivity Level 1 (Unlimited) indicates the component has minimal sensitivity to moisture absorption during storage and handling. No special moisture control measures are required, and the part has unlimited shelf life under normal storage conditions.