SRA20150 Equivalent & Substitute Parts

Part Overview

The SRA20150 is a Schottky rectifier diode manufactured by Taiwan Semiconductor Corporation, rated for 150V DC reverse voltage and 20A average rectified current in a Through Hole TO-220AC package. This component is classified as Active product status and is RoHS3 compliant. Equivalent and substitute parts are identified based on matching electrical specifications and mechanical compatibility to ensure functional interchangeability in circuit applications requiring fast recovery Schottky diode performance at this voltage and current rating.

Substiute Parts

SRA20150

Taiwan Semiconductor CorporationIn Stock: 1146SRA20150 Datasheet

Current PartRFQ

MBR20150

SMC Diode SolutionsIn Stock: 8610MBR20150 Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the SRA20150 is determined by the following critical electrical and mechanical parameters:

Voltage Rating: The substitute part must maintain a DC reverse voltage (Vr) rating of 150V to ensure equivalent blocking capability in the circuit.

Current Rating: The substitute part must support a minimum average rectified current (Io) of 20A to handle the same load conditions. Parts with unspecified current ratings are evaluated based on package thermal capability and forward voltage characteristics at the required current level.

Package Compatibility: The substitute part must use the TO-220-2 package in Through Hole mounting configuration to ensure mechanical and thermal interface compatibility with existing PCB designs.

Technology Type: The substitute part must employ Schottky diode technology to maintain fast recovery characteristics (≤ 500ns) and low forward voltage drop performance.

Temperature Range: The substitute part must support the operating junction temperature range of -55°C to 150°C.

Compliance: The substitute part must maintain RoHS3 compliance status for regulatory alignment.

The MBR20150 manufactured by SMC Diode Solutions meets all substitution criteria based on these parameters.

Parameter Comparison

Engineering Selection Recommendations

SRA20150 (Primary Selection)

The SRA20150 is the original specified component and remains the primary selection when available. This part is manufactured by Taiwan Semiconductor Corporation with Active product status and maintains full RoHS3 compliance. The part is REACH Unaffected, simplifying supply chain documentation requirements.

MBR20150 (Substitute Selection)

The MBR20150 manufactured by SMC Diode Solutions is a qualified substitute when SRA20150 availability is constrained. This part maintains identical voltage and temperature ratings, matching package configuration, and equivalent fast recovery Schottky technology. The MBR20150 demonstrates superior forward voltage performance at 950 mV compared to the SRA20150 at 1.02 V, resulting in lower power dissipation in the application circuit. Both parts maintain RoHS3 compliance and unlimited moisture sensitivity classification. The MBR20150 is REACH Affected, requiring verification of supply chain compliance documentation if applicable to the end application.

Selection between these parts is determined by availability, supply chain compliance requirements, and thermal design considerations related to forward voltage differences.

Frequently Asked Questions (FAQ)

Q: Can the MBR20150 directly replace the SRA20150 in existing designs?

A: Yes. Both parts share identical voltage ratings (150V), matching TO-220-2 package configuration, equivalent fast recovery Schottky technology, and identical operating temperature range (-55°C to 150°C). Direct PCB substitution is mechanically and electrically compatible.

Q: What is the significance of the forward voltage difference between these parts?

A: The MBR20150 exhibits 950 mV forward voltage compared to the SRA20150 at 1.02 V, both measured at 20A. This 70 mV difference results in lower power dissipation in the MBR20150, reducing thermal load on the component and potentially improving circuit efficiency. Thermal design calculations should account for this difference in high-current applications.

Q: Why is the MBR20150 current rating not specified?

A: The MBR20150 datasheet does not explicitly state average rectified current. However, the TO-220-2 package configuration and forward voltage specification at 20A indicate equivalent current handling capability to the SRA20150. Package thermal characteristics determine maximum current capacity in both parts.

Q: Are there compliance differences between these parts?

A: Both parts are RoHS3 compliant and carry unlimited moisture sensitivity classification (MSL 1). The SRA20150 is REACH Unaffected while the MBR20150 is REACH Affected. Applications subject to REACH regulations should verify supply chain documentation for the MBR20150.

Q: What is the reverse leakage current difference and does it affect circuit performance?

A: The SRA20150 specifies 100 µA reverse leakage at 150V while the MBR20150 specifies 1 mA at the same conditions. This tenfold difference is within acceptable ranges for Schottky diode applications. Circuit designs with high-impedance reverse bias paths should evaluate this parameter against specific application requirements.

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

A: Yes. Both parts meet fast recovery specifications (≤ 500ns at > 200mA) required for switching applications. The identical recovery speed classification ensures equivalent performance in rectification and freewheeling diode circuits operating at comparable switching frequencies.

Q: What packaging format differences exist between these parts?

A: The SRA20150 is supplied in standard packaging while the MBR20150 is supplied in Tube packaging. Both use identical TO-220-2 component configuration. Tube packaging affects handling and automated assembly processes but does not alter electrical or mechanical compatibility.