MBR1550ULPS-TP Equivalent & Substitute Parts

Part Overview

The MBR1550ULPS-TP is a Schottky rectifier diode manufactured by Micro Commercial Co, rated for 50 V DC reverse voltage and 15 A average rectified current in a Surface Mount TO-277-3 package. This component is classified as Obsolete product status. Due to its obsolete classification, identifying equivalent and substitute parts is necessary to maintain design continuity and ensure component availability for new production runs and field replacements.

Substiute Parts

MBR1550ULPS-TP

Micro Commercial CoIn Stock: 1574MBR1550ULPS-TP Datasheet

Current PartRFQ

MBR15U45-TP

Micro Commercial CoIn Stock: 3106MBR15U45-TP Datasheet

SimilarRFQ

PMEG045T050EPDZ

Nexperia USA Inc.In Stock: 2499PMEG045T050EPDZ Datasheet

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Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the MBR1550ULPS-TP are identified based on the following critical electrical and mechanical parameters:

Primary Substitution Criteria:

• Technology: Schottky diode
• Mounting Type: Surface Mount
• Package / Case: TO-277, 3-PowerDFN
• Speed: Fast Recovery ≤ 500ns, > 200mA (Io)
• RoHS Status: ROHS3 Compliant

Voltage and Current Compatibility: Substitute parts must maintain electrical compatibility within the application's design specifications. The MBR1550ULPS-TP operates at 50 V maximum reverse voltage with 15 A average rectified current. Substitute parts may operate at equal or lower voltage ratings, provided the application does not exceed the substitute part's voltage specification. Current ratings must support the application's requirements.

Identified Substitute Parts:

1. MBR15U45-TP (Micro Commercial Co) – Active product status, 45 V / 15 A
2. PMEG045T050EPDZ (Nexperia USA Inc.) – Active product status, 45 V / 5 A

Parameter Comparison

Engineering Selection Recommendations

MBR15U45-TP Selection Criteria: The MBR15U45-TP is an Active product from Micro Commercial Co with identical current rating (15 A) and forward voltage characteristics (470 mV @ 15 A) to the MBR1550ULPS-TP. The voltage rating is reduced to 45 V, which is suitable for applications where the circuit design operates below 45 V maximum reverse voltage. This part maintains full compliance with ROHS3 and shares the same thermal operating range (-55°C ~ 150°C). The MBR15U45-TP is available in higher inventory quantities (3030 Pcs) compared to the obsolete main part.

PMEG045T050EPDZ Selection Criteria: The PMEG045T050EPDZ is an Active product from Nexperia USA Inc. with automotive-grade qualification (AEC-Q101) and extended maximum junction temperature (175°C). This part is suitable for applications requiring automotive reliability standards. However, the current rating is limited to 5 A, which restricts its use to circuits requiring lower current levels than the original 15 A specification. The reverse leakage current is significantly lower (44 µA @ 45 V), providing superior leakage performance. ROHS3 compliance is maintained.

Substitution Applicability:

• Use MBR15U45-TP for direct replacement in designs operating at 45 V or lower reverse voltage with 15 A current requirements
• Use PMEG045T050EPDZ only in applications with maximum 5 A current requirements and where automotive qualification is beneficial
• Both substitutes are Active products with established supply chains

Frequently Asked Questions (FAQ)

Q: Can the MBR15U45-TP directly replace the MBR1550ULPS-TP?

A: The MBR15U45-TP is a direct substitute for applications where the circuit design operates at 45 V maximum reverse voltage or lower. Both parts share identical current rating (15 A), forward voltage (470 mV @ 15 A), speed characteristics, package type (TO-277, 3-PowerDFN), and thermal range (-55°C ~ 150°C). The primary difference is the reduced voltage rating from 50 V to 45 V. If your circuit design requires 50 V reverse voltage capability, the MBR15U45-TP is not suitable.

Q: Is the PMEG045T050EPDZ suitable as a replacement?

A: The PMEG045T050EPDZ is suitable only for applications with maximum 5 A average rectified current. The original MBR1550ULPS-TP is rated for 15 A. Using the PMEG045T050EPDZ in a 15 A circuit will cause the component to exceed its current rating and fail. The PMEG045T050EPDZ is appropriate for lower-current applications requiring automotive-grade reliability.

Q: What are the key differences in reverse leakage current?

A: The MBR1550ULPS-TP has 300 µA reverse leakage @ 50 V. The MBR15U45-TP has 500 µA @ 45 V, and the PMEG045T050EPDZ has 44 µA @ 45 V. The PMEG045T050EPDZ exhibits significantly lower leakage, which may be beneficial in low-power or precision applications. The MBR15U45-TP has higher leakage but remains within acceptable ranges for most industrial applications.

Q: Are all substitute parts in the same package?

A: All three parts use the TO-277, 3-PowerDFN package type, ensuring mechanical and thermal compatibility. However, packaging format differs: the MBR1550ULPS-TP and PMEG045T050EPDZ are supplied in Cut Tape (CT) & Digi-Reel®, while the MBR15U45-TP is supplied in Tape & Reel (TR). These packaging differences do not affect electrical performance or board-level compatibility.

Q: What is the temperature operating range for each part?

A: The MBR1550ULPS-TP and MBR15U45-TP both operate from -55°C to 150°C junction temperature. The PMEG045T050EPDZ extends the maximum junction temperature to 175°C, providing additional thermal margin in high-temperature environments. All three parts maintain ROHS3 compliance across their operating ranges.

Q: Why is the MBR1550ULPS-TP classified as Obsolete?

A: The MBR1550ULPS-TP is classified as Obsolete, indicating it is no longer in active production. The MBR15U45-TP and PMEG045T050EPDZ are both Active products with established supply chains and ongoing manufacturing support. For new designs and production continuity, selecting an Active substitute part is recommended.