MBR4015CTLG Equivalent & Substitute Parts

Part Overview

The MBR4015CTLG is a Schottky diode array manufactured by onsemi, configured as 1 pair common cathode with a maximum reverse voltage of 15 V and average rectified current of 20 A per diode. The device is packaged in TO-220-3 through-hole configuration and is classified as obsolete product status. Due to its obsolete classification, equivalent substitute parts with active product status are necessary to maintain design continuity and ensure long-term component availability for new production and field replacements.

Substiute Parts

MBR4015CTLG

onsemiIn Stock: 1723MBR4015CTLG Datasheet

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DSB40C15PB

IXYSIn Stock: 814DSB40C15PB Datasheet

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VS-47CTQ020-M3

Vishay General Semiconductor - Diodes DivisionIn Stock: 235697VS-47CTQ020-M3 Datasheet

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Key Parameters

Substitute Part Grouping Explanation

Substitution of the MBR4015CTLG is determined by the following critical parameters: diode configuration (1 pair common cathode), Schottky technology, through-hole mounting, and TO-220-3 package compatibility. The substitute parts must maintain electrical compatibility within the allowed parameter ranges for reverse voltage, rectified current, forward voltage, and operating temperature.

Two substitute parts are identified based on these criteria:

DSB40C15PB (IXYS): Maintains identical diode configuration, Schottky technology, 15 V reverse voltage rating, 20 A rectified current per diode, and TO-220-3 package. This part is functionally equivalent with active product status.

VS-47CTQ020-M3 (Vishay General Semiconductor - Diodes Division): Maintains identical diode configuration, Schottky technology, 20 A rectified current per diode, and TO-220-3 package. This part features a higher reverse voltage rating of 20 V, providing enhanced voltage margin. This part is functionally compatible with active product status and significantly higher inventory availability.

Parameter Comparison

Engineering Selection Recommendations

DSB40C15PB Selection: This IXYS part provides direct functional equivalence to the MBR4015CTLG with matching reverse voltage and current ratings. The part holds active product status and ROHS3 compliance. Selection of this part is appropriate for applications requiring exact electrical parameter matching to the original design specification.

VS-47CTQ020-M3 Selection: This Vishay part provides functional compatibility with enhanced reverse voltage rating (20 V versus 15 V), offering improved voltage margin for circuit protection. The part holds active product status, ROHS3 compliance, and demonstrates significantly higher inventory availability (235,600 pieces). Selection of this part is appropriate for applications where the higher reverse voltage rating does not conflict with circuit design constraints and where long-term supply assurance is a priority.

Both substitute parts maintain identical diode configuration, Schottky technology, current rating, fast recovery speed, through-hole mounting, and TO-220-3 package compatibility. Both parts are ROHS3 compliant and REACH unaffected, meeting regulatory requirements equivalent to the original part.

Frequently Asked Questions (FAQ)

Q: Can DSB40C15PB directly replace MBR4015CTLG in existing designs?

A: Yes. The DSB40C15PB maintains identical electrical ratings for reverse voltage (15 V), rectified current (20 A per diode), diode configuration (1 pair common cathode), and package (TO-220-3). Both parts are Schottky technology with fast recovery speed characteristics. Pin-to-pin compatibility is maintained.

Q: What is the primary difference between DSB40C15PB and VS-47CTQ020-M3?

A: The primary difference is reverse voltage rating. DSB40C15PB is rated at 15 V maximum reverse voltage, matching the original MBR4015CTLG specification. VS-47CTQ020-M3 is rated at 20 V maximum reverse voltage, providing higher voltage margin. Both maintain identical 20 A rectified current per diode and TO-220-3 package configuration.

Q: Is VS-47CTQ020-M3 compatible with circuits designed for MBR4015CTLG?

A: Yes, with design verification. The higher reverse voltage rating (20 V) of VS-47CTQ020-M3 is compatible with circuits designed for 15 V operation, as the part can operate safely at lower voltage levels. The identical current rating (20 A), diode configuration, and package ensure mechanical and electrical compatibility. Forward voltage characteristics differ slightly (510 mV @ 40 A versus 430 mV @ 20 A), which should be evaluated in thermal and efficiency analysis.

Q: Are all three parts ROHS3 compliant?

A: Yes. MBR4015CTLG, DSB40C15PB, and VS-47CTQ020-M3 are all ROHS3 compliant and REACH unaffected, meeting current regulatory requirements for electronic components.

Q: What is the operating temperature range difference between the parts?

A: MBR4015CTLG operates from -65°C to 150°C junction temperature. Both DSB40C15PB and VS-47CTQ020-M3 operate from -55°C to 150°C junction temperature. The substitute parts have a narrower lower temperature limit by 10°C. Applications requiring operation below -55°C require design review.

Q: Why does VS-47CTQ020-M3 show higher inventory availability?

A: VS-47CTQ020-M3 demonstrates 235,600 pieces in stock compared to 707 pieces for DSB40C15PB and 1,631 pieces for the obsolete MBR4015CTLG. Higher inventory availability reflects broader market adoption and active production status of the Vishay part.

Q: Can the parts be used interchangeably in the same circuit board?

A: Yes. All three parts use identical TO-220-3 package configuration with through-hole mounting, ensuring pin-to-pin compatibility and identical PCB footprint. No circuit board modifications are required for substitution.