STF1545C Equivalent & Substitute Parts

Part Overview

The STF1545C is a Schottky diode array manufactured by SMC Diode Solutions, configured as a 1 Pair Common Cathode arrangement in a TO-220-3 Full Pack with isolated tab. This component is designed for high-speed rectification applications requiring fast recovery characteristics and low forward voltage drop. The part is currently Active in product status with 693 pieces available in stock. Substitute parts are identified when equivalent electrical and mechanical specifications are required due to inventory constraints, supply chain considerations, or application-specific performance needs within the defined parameter ranges.

Substiute Parts

STF1545C

SMC Diode SolutionsIn Stock: 778STF1545C Datasheet

Current PartRFQ

MBRF2545CT-E3/45

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

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the STF1545C with the MBRF2545CT-E3/45 is based on strict equivalence of the following critical parameters:

Electrical Equivalence Criteria:

• Identical diode configuration: 1 Pair Common Cathode
• Identical technology: Schottky
• Identical maximum reverse voltage: 45 V
• Identical fast recovery speed specification: ≤ 500ns, > 200mA (Io)
• Identical package type: TO-220-3 Full Pack, Isolated Tab
• Identical supplier device package designation: ITO-220AB

Mechanical Equivalence Criteria:

• Identical mounting type: Through Hole
• Identical package case: TO-220-3 Full Pack, Isolated Tab

Compliance Equivalence Criteria:

• Both parts are ROHS3 Compliant
• Both parts have MSL rating of 1 (Unlimited)
• Both parts carry ECCN classification EAR99
• Both parts share identical HTSUS code: 8541.10.0080

The substitute part MBRF2545CT-E3/45 demonstrates higher performance in current handling and lower reverse leakage characteristics while maintaining full compatibility with the specified electrical and mechanical requirements.

Parameter Comparison

Engineering Selection Recommendations

Both the STF1545C and MBRF2545CT-E3/45 are Active products with full ROHS3 compliance and unlimited moisture sensitivity ratings, making them suitable for production environments with equivalent regulatory requirements. The STF1545C is the primary selection when SMC Diode Solutions supply chain is preferred or when the specified forward voltage and current characteristics are the design constraint. The MBRF2545CT-E3/45 serves as a direct substitute when Vishay General Semiconductor supply is available or when the enhanced current handling capacity (12.5 A per diode) and reduced reverse leakage (200 µA versus 500 µA) provide performance advantages within the application requirements. Both parts maintain identical fast recovery speed specifications and reverse voltage ratings, ensuring functional interchangeability in TO-220-3 Full Pack, Isolated Tab through-hole mounting configurations. Selection between these parts is determined by supply availability, inventory status, and application-specific performance margins rather than fundamental electrical or mechanical incompatibility.

Frequently Asked Questions (FAQ)

Q: Can the MBRF2545CT-E3/45 be used as a direct replacement for the STF1545C in existing designs?

A: Yes. Both parts share identical diode configuration (1 Pair Common Cathode), technology (Schottky), maximum reverse voltage (45 V), fast recovery speed specification (≤ 500ns, > 200mA), and package type (TO-220-3 Full Pack, Isolated Tab with ITO-220AB supplier designation). The mechanical and electrical interfaces are equivalent, allowing direct substitution in through-hole PCB applications.

Q: What are the key differences between these two parts?

A: The MBRF2545CT-E3/45 provides higher average rectified current per diode (12.5 A versus unspecified for STF1545C), lower reverse leakage current (200 µA versus 500 µA at 45 V), and an extended lower operating temperature limit (-65°C versus -55°C). Forward voltage specifications differ due to measurement at different current levels (820 mV @ 30 A for MBRF2545CT-E3/45 versus 630 mV @ 7.5 A for STF1545C).

Q: Are both parts compliant with current regulatory standards?

A: Yes. Both the STF1545C and MBRF2545CT-E3/45 are ROHS3 Compliant with MSL rating of 1 (Unlimited), indicating no moisture sensitivity restrictions. Both carry identical ECCN (EAR99) and HTSUS (8541.10.0080) classifications.

Q: What is the significance of the TO-220-3 Full Pack, Isolated Tab package?

A: This package designation indicates a three-lead through-hole component with an isolated mounting tab, allowing direct PCB mounting without electrical connection to the tab. The ITO-220AB supplier device package confirms mechanical and electrical pin compatibility between the STF1545C and MBRF2545CT-E3/45.

Q: Can these parts be used interchangeably in high-temperature applications?

A: Both parts support operating junction temperatures up to 150°C. The MBRF2545CT-E3/45 extends the lower temperature limit to -65°C compared to the STF1545C at -55°C, providing broader temperature range coverage for applications requiring extended low-temperature operation.

Q: What determines the choice between these two Schottky diode arrays?

A: Selection is based on supply chain availability, inventory status, and application-specific performance requirements. The MBRF2545CT-E3/45 offers enhanced current capacity and reduced leakage characteristics, while the STF1545C may be selected based on supplier preference or existing qualification history. Both parts are electrically and mechanically equivalent for standard rectification applications within the specified 45 V reverse voltage rating.