MBR2515LG Equivalent & Substitute Parts

Part Overview

The MBR2515LG is a Schottky rectifier diode manufactured by onsemi, rated for 15 V DC reverse voltage and 25 A average rectified current in a Through Hole TO-220-2 package. This component is classified as obsolete, necessitating identification of equivalent substitute parts for ongoing design support and procurement continuity. The fast recovery characteristic (≤500ns at >200mA) and low forward voltage drop make this diode suitable for high-frequency switching applications requiring efficient rectification.

Substiute Parts

MBR2515LG

onsemiIn Stock: 2253MBR2515LG Datasheet

Current PartRFQ

STPS20L15D

Vishay General Semiconductor - Diodes DivisionIn Stock: 1972STPS20L15D Datasheet

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Key Parameters

Substitute Part Grouping Explanation

Substitution of the MBR2515LG is determined by the following critical electrical and mechanical parameters:

Voltage Rating: The substitute must maintain the same 15 V DC reverse voltage specification to ensure circuit protection and reliability.

Current Rating: The substitute current rating must equal or exceed the 25 A average rectified current requirement. Parts with lower current ratings do not qualify as direct substitutes.

Technology: Schottky diode technology must be preserved to maintain the fast recovery characteristic and low forward voltage drop performance.

Package Type: Through Hole TO-220-2 package compatibility is required for mechanical and thermal interface consistency.

Speed Characteristic: Fast recovery performance (≤500ns at >200mA) must be maintained for switching application compatibility.

Reverse Leakage: The reverse leakage current specification must be compatible with circuit design requirements.

The STPS20L15D is identified as a substitute part; however, it exhibits a reduced current rating of 20 A compared to the 25 A specification of the MBR2515LG. This reduction in current capacity represents a functional limitation that must be evaluated against specific circuit requirements.

Parameter Comparison

Engineering Selection Recommendations

Compliance Considerations: The MBR2515LG is ROHS3 compliant, while the STPS20L15D is RoHS non-compliant. Applications subject to RoHS regulations must account for this compliance difference in component selection.

Product Status: Both the main part and identified substitute are classified as obsolete. Long-term availability cannot be assured for either component. Procurement planning should account for limited inventory windows.

Current Rating Differential: The STPS20L15D operates at a maximum average rectified current of 20 A, representing an 80% rating relative to the MBR2515LG specification of 25 A. Circuit designs operating at or near the 25 A specification limit cannot be directly substituted without thermal and electrical re-evaluation.

Temperature Range: The MBR2515LG supports a lower junction temperature limit of -65°C compared to the STPS20L15D at -55°C. Applications requiring operation below -55°C cannot use the substitute part.

Forward Voltage Performance: The STPS20L15D exhibits a lower forward voltage drop (410 mV @ 19 A) compared to the MBR2515LG (450 mV @ 25 A), resulting in improved efficiency characteristics at equivalent operating currents.

Reverse Leakage: The STPS20L15D demonstrates lower reverse leakage current (10 mA @ 15 V) relative to the MBR2515LG (15 mA @ 15 V), indicating superior reverse blocking performance.

Frequently Asked Questions (FAQ)

Q: Can the STPS20L15D directly replace the MBR2515LG in all applications?

A: Direct replacement is not universal. The STPS20L15D is rated for 20 A average rectified current versus the MBR2515LG specification of 25 A. Circuits designed to operate at or above 20 A require thermal and electrical analysis to confirm compatibility. Circuits operating below 20 A may be compatible subject to other parameter verification.

Q: What is the significance of the RoHS compliance difference?

A: The MBR2515LG is ROHS3 compliant while the STPS20L15D is RoHS non-compliant. Products destined for markets with RoHS regulatory requirements must use the compliant MBR2515LG or identify an alternative RoHS-compliant substitute. This difference may restrict the STPS20L15D to specific geographic or application markets.

Q: Are both parts available for procurement?

A: Both components are classified as obsolete. The MBR2515LG has 2200 pieces in stock inventory, while the STPS20L15D has 1890 pieces available. Obsolete status indicates limited future availability, and procurement should prioritize securing inventory within defined project timelines.

Q: How do the temperature operating ranges compare?

A: The MBR2515LG operates from -65°C to 125°C junction temperature, while the STPS20L15D operates from -55°C to 125°C. Applications requiring operation below -55°C must use the MBR2515LG. Both parts support the same upper temperature limit of 125°C.

Q: What is the package compatibility between these parts?

A: Both the MBR2515LG and STPS20L15D utilize Through Hole TO-220-2 package configuration. Physical mounting and thermal interface characteristics are compatible. PCB layout modifications are not required for package accommodation.

Q: How do the forward voltage characteristics affect circuit performance?

A: The STPS20L15D exhibits a forward voltage of 410 mV @ 19 A compared to the MBR2515LG at 450 mV @ 25 A. At equivalent operating currents below 20 A, the STPS20L15D produces lower voltage drop and reduced power dissipation. This efficiency advantage must be weighed against the reduced current rating and compliance differences.

Q: Is the fast recovery characteristic maintained in the substitute part?

A: Yes. Both the MBR2515LG and STPS20L15D maintain fast recovery performance specification of ≤500ns at >200mA. Switching frequency and transient response characteristics remain equivalent between the two parts.