MBR1550LPS-TP Equivalent & Substitute Parts

Part Overview

The MBR1550LPS-TP is a Schottky rectifier diode manufactured by Micro Commercial Co, rated for 50V DC reverse voltage and 15A average rectified current in a Surface Mount TO-277-3 package. This component is classified as Obsolete, necessitating identification of equivalent alternatives for ongoing design requirements and procurement needs. Substitute parts must maintain electrical compatibility across voltage, current, and thermal specifications while accommodating available packaging and supplier options.

Substiute Parts

MBR1550LPS-TP

Micro Commercial CoIn Stock: 15404MBR1550LPS-TP Datasheet

Current PartRFQ

SS5P5HM3_A/H

Vishay General Semiconductor - Diodes DivisionIn Stock: 758SS5P5HM3_A/H Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the MBR1550LPS-TP is determined by strict adherence to the following electrical and mechanical parameters:

Mandatory Matching Parameters:

• Voltage - DC Reverse (Vr) (Max): 50V minimum
• Technology: Schottky rectifier diode
• Mounting Type: Surface Mount
• Package / Case: TO-277 family compatible
• Operating Temperature Range: -55°C to 150°C minimum

Current Rating Consideration: The MBR1550LPS-TP is rated for 15A average rectified current. Substitute parts must be evaluated based on their current capacity relative to the application requirements. Parts with lower current ratings (such as 5A) are not direct functional equivalents for circuits requiring the full 15A specification.

Forward Voltage Characteristic: Forward voltage drop at rated current is a critical parameter for power dissipation calculations. Substitute parts may exhibit different Vf characteristics, which affects thermal performance and efficiency.

Reverse Leakage Current: Reverse leakage specifications vary among substitute candidates and influence circuit performance in blocking mode.

Parameter Comparison

Engineering Selection Recommendations

SS5P5HM3_A/H Substitution Assessment:

The SS5P5HM3_A/H from Vishay General Semiconductor - Diodes Division is an Active product with identical voltage rating (50V) and compatible package designation (TO-277, 3-PowerDFN). This part meets the mandatory electrical parameters for voltage and thermal operating range.

Current Rating Limitation: The SS5P5HM3_A/H is rated for 5A average rectified current, compared to the MBR1550LPS-TP specification of 15A. This represents a 67% reduction in current capacity. This substitute is suitable only for applications where the actual circuit current requirement does not exceed 5A.

Compliance and Qualification: The SS5P5HM3_A/H carries ROHS3 compliance, matching the original part. Additionally, this substitute includes Automotive grade classification and AEC-Q101 qualification, providing enhanced reliability documentation for automotive and industrial applications.

Reverse Leakage Improvement: The SS5P5HM3_A/H exhibits lower reverse leakage current (150 µA @ 50V) compared to the MBR1550LPS-TP (500 µA @ 50V), representing improved blocking characteristics.

Forward Voltage Consideration: Forward voltage at rated current differs between parts due to different current ratings. Direct Vf comparison at identical current levels is not applicable; however, both parts maintain Fast Recovery characteristics ≤ 500ns.

Packaging Format: The SS5P5HM3_A/H is supplied in Tape & Reel (TR) format, suitable for automated assembly processes.

Frequently Asked Questions (FAQ)

Q: Can the SS5P5HM3_A/H directly replace the MBR1550LPS-TP in all applications?

A: No. The SS5P5HM3_A/H is rated for 5A average rectified current, while the MBR1550LPS-TP is rated for 15A. Direct substitution is valid only for circuits where the actual operating current does not exceed 5A. Applications requiring the full 15A specification require alternative solutions.

Q: Are the package designations compatible between these parts?

A: Both parts use the TO-277, 3-PowerDFN package family. The MBR1550LPS-TP uses TO-277-3 supplier designation, while the SS5P5HM3_A/H uses TO-277A (SMPC) designation. Physical compatibility should be confirmed with package drawings, as minor variations may exist within the TO-277 family.

Q: What is the significance of the AEC-Q101 qualification on the SS5P5HM3_A/H?

A: AEC-Q101 is an automotive electronics qualification standard. This certification indicates the part has undergone rigorous testing for automotive applications. For non-automotive applications, this qualification provides additional reliability assurance but is not a requirement for general industrial use.

Q: How do the reverse leakage specifications compare?

A: The SS5P5HM3_A/H exhibits 150 µA @ 50V reverse leakage, compared to 500 µA @ 50V for the MBR1550LPS-TP. Lower reverse leakage in the substitute part results in reduced standby current and improved blocking performance.

Q: Are both parts RoHS compliant?

A: Yes. Both the MBR1550LPS-TP and SS5P5HM3_A/H are ROHS3 compliant, meeting environmental and hazardous substance restrictions.

Q: What is the Moisture Sensitivity Level (MSL) for these parts?

A: Both parts are rated MSL 1 (Unlimited), indicating no moisture sensitivity restrictions during storage or handling. Standard component storage practices apply.

Q: Can the SS5P5HM3_A/H be used in parallel with other diodes to achieve higher current capacity?

A: Parallel operation of Schottky diodes requires careful circuit design to ensure balanced current distribution. This application is outside the scope of direct substitution and requires detailed thermal and electrical analysis.