FR2D Equivalent & Substitute Parts Reference

Part Overview

The FR2D is a general-purpose rectifier diode manufactured by SMC Diode Solutions, rated for 200V DC reverse voltage and 2A average rectified current in a surface mount SMB (DO-214AA) package. This component is classified as Active product status and is RoHS3 compliant with unlimited moisture sensitivity level (MSL 1). The FR2D serves as a standard fast recovery diode suitable for general rectification applications requiring moderate current handling at 200V operation.

Equivalent and substitute parts are identified based on matching or exceeding the electrical and mechanical specifications of the FR2D while maintaining compatibility with the SMB package form factor and surface mount assembly requirements.

Substiute Parts

FR2D

SMC Diode SolutionsIn Stock: 46941FR2D Datasheet

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MUR120SH

Taiwan Semiconductor CorporationIn Stock: 7007MUR120SH Datasheet

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STTH4R02U

STMicroelectronicsIn Stock: 20200STTH4R02U Datasheet

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Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the FR2D are qualified based on the following criteria:

Mandatory Matching Parameters:

• Voltage - DC Reverse (Vr) (Max): 200V minimum
• Package / Case: DO-214AA or SMB equivalent
• Mounting Type: Surface Mount
• Speed Classification: Fast Recovery ≤ 500ns, > 200mA
• RoHS Status: ROHS3 Compliant
• Moisture Sensitivity Level: 1 (Unlimited)

Allowable Variation Parameters:

• Current - Average Rectified (Io): Equal to or greater than 2A
• Voltage - Forward (Vf) (Max): Equal to or less than 1.3V at rated current
• Reverse Recovery Time (trr): Equal to or less than 150ns
• Current - Reverse Leakage @ Vr: Equal to or less than 5µA @ 200V
• Operating Temperature - Junction: Equal to or exceeding -50°C to 150°C range

The identified substitute parts meet or exceed the FR2D specifications within these parameters while maintaining full mechanical and electrical compatibility for direct board-level substitution.

Parameter Comparison

Engineering Selection Recommendations

MUR120SH (Taiwan Semiconductor Corporation): The MUR120SH is a qualified substitute for applications where the FR2D current rating of 2A exceeds circuit requirements. This part is rated for 1A average rectified current at 200V reverse voltage and features superior reverse recovery time (25ns versus 150ns) and lower reverse leakage current (2µA versus 5µA). The MUR120SH carries AEC-Q101 automotive qualification and operates across an extended temperature range (-55°C to 175°C). Direct board-level substitution is mechanically and electrically compatible. Selection of MUR120SH is appropriate for current-limited applications where the 1A rating is sufficient and automotive-grade reliability is required.

STTH4R02U (STMicroelectronics): The STTH4R02U is a qualified substitute for applications requiring higher current capacity than the FR2D. This part is rated for 4A average rectified current at 200V reverse voltage, providing a 2:1 current margin over the FR2D specification. The STTH4R02U demonstrates superior reverse recovery time (30ns versus 150ns) and lower reverse leakage current (3µA versus 5µA). Operating temperature maximum is 175°C. Direct board-level substitution is mechanically and electrically compatible. Selection of STTH4R02U is appropriate for applications where current headroom is beneficial or where higher current capacity may be required in future design iterations.

Both substitute parts maintain full RoHS3 compliance, MSL 1 rating, and SMB package compatibility with the FR2D.

Frequently Asked Questions (FAQ)

Q: Can the MUR120SH replace the FR2D in all applications?

A: The MUR120SH is mechanically and electrically compatible with the FR2D for direct board-level substitution. However, the MUR120SH is rated for 1A average rectified current compared to the FR2D's 2A rating. Substitution is appropriate only when circuit current requirements do not exceed 1A. The MUR120SH provides superior reverse recovery time and lower leakage current characteristics.

Q: Can the STTH4R02U replace the FR2D in all applications?

A: The STTH4R02U is mechanically and electrically compatible with the FR2D for direct board-level substitution. The STTH4R02U is rated for 4A average rectified current, exceeding the FR2D's 2A rating. This part is suitable for all applications where the FR2D is specified, with the added benefit of higher current capacity and superior reverse recovery time (30ns versus 150ns).

Q: Are all three parts in the same package?

A: Yes. The FR2D, MUR120SH, and STTH4R02U are all housed in the DO-214AA (SMB) surface mount package. All three parts are compatible with identical PCB footprints and reflow soldering processes.

Q: What is the primary difference between the FR2D and its substitutes?

A: The primary differences are current rating and reverse recovery time. The MUR120SH is rated for lower current (1A) but offers faster recovery (25ns). The STTH4R02U is rated for higher current (4A) and also offers faster recovery (30ns). All three parts maintain the same 200V reverse voltage rating and SMB package form factor.

Q: Are all substitute parts RoHS3 compliant?

A: Yes. The FR2D, MUR120SH, and STTH4R02U are all RoHS3 compliant with MSL 1 (Unlimited) moisture sensitivity level rating.

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

A: The FR2D operates from -50°C to 150°C junction temperature. The MUR120SH operates from -55°C to 175°C, providing extended low-temperature and high-temperature capability. The STTH4R02U operates to a maximum junction temperature of 175°C.

Q: Can these parts be used interchangeably on the same PCB assembly?

A: Yes. All three parts use identical DO-214AA (SMB) package geometry and surface mount footprints. PCB layout and reflow soldering parameters remain unchanged across all three parts.