MBRF3045CTH Equivalent & Substitute Parts

Part Overview

The MBRF3045CTH 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 30 A average rectified current per diode. The device is packaged in a TO-220-3 Full Pack with isolated tab for through-hole mounting applications. This part is Active in product status and carries AEC-Q101 automotive qualification with ROHS3 compliance.

Substitute parts are identified when equivalent electrical and mechanical parameters allow direct replacement within the same application circuit topology. Substitution becomes necessary due to inventory availability, supply chain considerations, or design flexibility requirements while maintaining functional equivalence.

Substiute Parts

MBRF3045CTH

Taiwan Semiconductor CorporationIn Stock: 1231MBRF3045CTH Datasheet

Current PartRFQ

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

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Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the MBRF3045CTH is determined by the following critical parameters:

Mandatory Matching Parameters:

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

Allowable Variation Parameters:

• Current - Average Rectified (Io) (per Diode): Lower current ratings are acceptable for applications not requiring full 30 A capacity
• Voltage - Forward (Vf) (Max): Variation permitted within thermal and efficiency design margins
• Current - Reverse Leakage @ Vr: Lower leakage values are acceptable
• Operating Temperature - Junction: Extended or equivalent ranges are acceptable

The substitute parts MBRF1545CT-E3/45 and MBRF2545CT-E3/45 maintain all mandatory matching parameters while offering reduced current ratings of 7.5 A and 12.5 A respectively. These devices are suitable for applications where the full 30 A capacity of the MBRF3045CTH is not required.

Parameter Comparison

Engineering Selection Recommendations

MBRF3045CTH (Primary Part): This part is the specified component for applications requiring 30 A average rectified current per diode at 45 V reverse voltage. It carries AEC-Q101 automotive qualification and ROHS3 compliance, making it suitable for automotive and industrial applications with stringent reliability requirements. The part is Active in product status with 1146 units in stock.

MBRF2545CT-E3/45 (Substitute for 12.5 A Applications): This substitute part is suitable for applications where the current requirement does not exceed 12.5 A per diode. It maintains identical voltage ratings, package configuration, and fast recovery speed characteristics. The device is Active in product status with 1427 units in stock. Operating temperature range extends to -65°C, providing enhanced low-temperature performance. ROHS3 compliance and automotive-grade qualification are maintained.

MBRF1545CT-E3/45 (Substitute for 7.5 A Applications): This substitute part is suitable for applications where the current requirement does not exceed 7.5 A per diode. It maintains identical voltage ratings, package configuration, and fast recovery speed characteristics. The device is Active in product status with 1960 units in stock. Operating temperature range extends to -65°C. Forward voltage drop is reduced to 570 mV at 7.5 A, and reverse leakage current is reduced to 100 µA at 45 V. ROHS3 compliance is maintained.

All three devices are compliant with REACH regulations and carry EAR99 ECCN classification. Moisture sensitivity level is 1 (Unlimited) for all parts.

Frequently Asked Questions (FAQ)

Q: Can MBRF2545CT-E3/45 or MBRF1545CT-E3/45 be used as direct replacements for MBRF3045CTH?

A: Direct replacement is possible only when the application circuit does not require current exceeding the substitute part's rating. MBRF2545CT-E3/45 supports up to 12.5 A per diode, and MBRF1545CT-E3/45 supports up to 7.5 A per diode. If the circuit demands the full 30 A capacity, substitution is not appropriate.

Q: Are the package dimensions identical across all three parts?

A: Yes. All three parts use the TO-220-3 Full Pack with isolated tab configuration for through-hole mounting. PCB layout and thermal management considerations remain consistent.

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

A: MBRF3045CTH and MBRF2545CT-E3/45 both specify 820 mV maximum forward voltage at their respective rated currents. MBRF1545CT-E3/45 specifies 570 mV maximum forward voltage at 7.5 A. Forward voltage drop affects power dissipation and thermal design.

Q: Do all parts meet automotive qualification standards?

A: MBRF3045CTH carries explicit AEC-Q101 automotive qualification and Automotive grade designation. MBRF2545CT-E3/45 and MBRF1545CT-E3/45 are manufactured by Vishay General Semiconductor and maintain ROHS3 compliance and equivalent reliability standards, though specific automotive qualification designation is not provided in the technical parameters.

Q: What is the reverse leakage current specification for each part?

A: MBRF3045CTH specifies 200 µA at 45 V. MBRF2545CT-E3/45 specifies 200 µA at 45 V. MBRF1545CT-E3/45 specifies 100 µA at 45 V. Lower leakage current in MBRF1545CT-E3/45 reduces standby power consumption.

Q: Are there temperature range differences between the parts?

A: MBRF3045CTH operates from -55°C to 150°C junction temperature. Both MBRF2545CT-E3/45 and MBRF1545CT-E3/45 operate from -65°C to 150°C, providing extended low-temperature capability.

Q: What is the recovery speed specification for these Schottky diodes?

A: All three parts specify Fast Recovery with switching time ≤ 500 ns for currents > 200 mA (Io). This fast recovery characteristic is essential for high-frequency switching applications.

Q: Are all parts RoHS compliant?

A: Yes. MBRF3045CTH, MBRF2545CT-E3/45, and MBRF1545CT-E3/45 are all ROHS3 compliant. All parts are REACH Unaffected and carry EAR99 ECCN classification.