MBRF1045CT-Y Equivalent & Substitute Parts

Part Overview

The MBRF1045CT-Y is a diode array rectifier manufactured by Taiwan Semiconductor Corporation, configured as a 1 Pair Common Cathode design with a maximum reverse voltage rating of 45 V and average rectified current of 10 A per diode. The device is packaged in a TO-220-3 Full Pack with isolated tab configuration for through-hole mounting applications. Currently active in product status with 804 pieces in stock, this component is ROHS3 compliant and REACH unaffected.

Equivalent and substitute parts are necessary when the primary part becomes unavailable, when alternative manufacturers' offerings provide identical electrical and mechanical specifications, or when design flexibility requires component sourcing from multiple suppliers. Substitute parts must maintain compatibility across critical parameters including voltage rating, current capacity, package configuration, and mounting type.

Substiute Parts

MBRF1045CT-Y

Taiwan Semiconductor CorporationIn Stock: 879MBRF1045CT-Y Datasheet

Current PartRFQ

MBRF1045CT

Taiwan Semiconductor CorporationIn Stock: 27121MBRF1045CT Datasheet

DirectRFQ

MBRF1045CTP

SMC Diode SolutionsIn Stock: 1992MBRF1045CTP Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the MBRF1045CT-Y is determined by strict alignment of the following critical parameters:

Mandatory Compatibility Parameters:

• Diode Configuration: 1 Pair Common Cathode
• Voltage - DC Reverse (Vr) (Max): 45 V minimum
• Package / Case: TO-220-3 Full Pack, Isolated Tab
• Mounting Type: Through Hole
• Operating Temperature Range: -55°C to 150°C minimum

Performance Parameters:

• Current - Average Rectified (Io): 10 A per diode or greater
• Voltage - Forward (Vf): Must not exceed specified maximum at rated current
• Speed Classification: Standard or Fast Recovery acceptable

Compliance Parameters:

• RoHS Status: ROHS3 Compliant required
• REACH Status: REACH Unaffected or REACH Affected acceptable

Substitute parts must satisfy all mandatory compatibility parameters. Performance parameters may vary within acceptable ranges provided the substitute meets or exceeds the primary part specifications. Parts that do not meet mandatory parameters are not suitable substitutes.

Parameter Comparison

Engineering Selection Recommendations

MBRF1045CT (Taiwan Semiconductor Corporation)

This substitute maintains identical electrical specifications to the main part across voltage rating, current capacity, and temperature range. Both devices are ROHS3 compliant and REACH unaffected. The primary distinction is technology classification: MBRF1045CT employs Schottky technology with fast recovery characteristics (≤500ns) compared to the standard recovery (>500ns) of the MBRF1045CT-Y. Forward voltage is reduced to 800 mV at 10 A, indicating improved efficiency. However, this part is discontinued at DiGi Electronics, limiting long-term availability. Selection of this substitute is appropriate only when existing inventory is accessible and future replenishment is not required.

MBRF1045CTP (SMC Diode Solutions)

This substitute satisfies all mandatory compatibility parameters: 1 Pair Common Cathode configuration, 45 V reverse voltage rating, TO-220-3 Full Pack isolated tab package, through-hole mounting, and -55°C to 150°C operating range. ROHS3 compliance is confirmed. The device is currently active in product status with 1939 pieces in stock, ensuring availability. REACH status is affected, requiring compliance verification for applications subject to REACH regulations. Forward voltage specification is provided at 5 A rather than 10 A, and average rectified current per diode is not specified in the provided data. Reverse leakage current is elevated at 1 mA compared to 100 µA in the main part. This substitute is suitable for applications where the specified current and leakage parameters are acceptable and REACH compliance is not a constraint.

Frequently Asked Questions (FAQ)

Q: Can MBRF1045CT be used as a direct replacement for MBRF1045CT-Y?

A: MBRF1045CT satisfies all mandatory compatibility parameters and maintains identical voltage and current ratings. The primary consideration is product status: MBRF1045CT is discontinued at DiGi Electronics. Direct replacement is possible only if existing inventory is available and future replenishment is not required.

Q: What is the difference between Standard and Schottky technology in these diodes?

A: The MBRF1045CT-Y uses Standard technology with recovery time greater than 500 ns. Substitute parts MBRF1045CT and MBRF1045CTP employ Schottky technology with fast recovery time of 500 ns or less. Schottky devices exhibit lower forward voltage drop, improving efficiency in rectification applications.

Q: Is MBRF1045CTP compatible with applications designed for MBRF1045CT-Y?

A: MBRF1045CTP maintains the required 45 V reverse voltage, 1 Pair Common Cathode configuration, TO-220-3 package, and -55°C to 150°C operating range. However, the average rectified current per diode is not specified, and reverse leakage current is 1 mA compared to 100 µA in the main part. Compatibility depends on whether the application can tolerate elevated leakage current and whether the unspecified current rating meets design requirements.

Q: What is the significance of the isolated tab in the TO-220-3 Full Pack package?

A: The isolated tab configuration electrically isolates the mounting tab from the device terminals, allowing the tab to be mounted to a heat sink without requiring electrical isolation hardware. All listed parts maintain this isolated tab configuration, ensuring mechanical and thermal compatibility.

Q: Are there compliance differences between the substitute parts?

A: All three parts are ROHS3 compliant. MBRF1045CT-Y and MBRF1045CT are REACH unaffected. MBRF1045CTP is REACH affected, requiring compliance verification for applications subject to REACH regulations.

Q: What inventory considerations apply to these substitutes?

A: MBRF1045CT-Y has 804 pieces in stock and is active. MBRF1045CT has 27100 pieces in stock but is discontinued at DiGi Electronics. MBRF1045CTP has 1939 pieces in stock and is active. Long-term availability is assured only for active parts.