MBR120HW Equivalent & Substitute Parts

Part Overview

The MBR120HW is an active Schottky rectifier diode manufactured by SMC Diode Solutions, designed for surface mount applications in the SOD-123 package. This component operates at a maximum reverse voltage of 20 V with an average rectified current rating of 1 A and exhibits fast recovery characteristics suitable for high-frequency switching applications. The part is RoHS3 compliant and carries unlimited moisture sensitivity classification, indicating robust handling characteristics for standard manufacturing environments. Substitute parts are identified to address inventory availability, lead time constraints, or specific application requirements while maintaining electrical and mechanical compatibility within defined parameter tolerances.

Key Parameters

Parameter	Value	Unit
Technology	Schottky	—
Voltage - DC Reverse (Vr) (Max)	20	V
Current - Average Rectified (Io)	1	A
Voltage - Forward (Vf) (Max) @ If	450 mV @ 1 A	mV
Speed	Fast Recovery ≤ 500ns, > 200mA (Io)	—
Package / Case	SOD-123	—
Mounting Type	Surface Mount	—
Operating Temperature - Junction	-65 to 125	°C
RoHS Status	ROHS3 Compliant	—

Substitute Part Grouping Explanation

Substitution of the MBR120HW with the PMEG2005EGWX is determined by equivalence in the following critical parameters:

Electrical Compatibility Parameters:

Reverse voltage rating: Both parts rated at 20 V maximum
Package and mounting: Both utilize SOD-123 surface mount package
Technology: Both employ Schottky rectifier technology
Recovery speed: Both classified as fast recovery ≤ 500ns for currents > 200mA

Substitution Constraint: The PMEG2005EGWX carries a maximum average rectified current rating of 500 mA, which is lower than the MBR120HW rating of 1 A. This part is suitable for applications where the required current does not exceed 500 mA. The substitute part is not suitable for applications requiring the full 1 A current capacity of the primary part.

Parameter Comparison

Parameter	MBR120HW (SMC)	PMEG2005EGWX (Nexperia)	Unit
Manufacturer	SMC Diode Solutions	Nexperia USA Inc.	—
Technology	Schottky	Schottky	—
Voltage - DC Reverse (Vr) (Max)	20	20	V
Current - Average Rectified (Io)	1	0.5	A
Voltage - Forward (Vf) (Max) @ If	450 mV @ 1 A	390 mV @ 500 mA	mV
Speed	Fast Recovery ≤ 500ns, > 200mA	Fast Recovery ≤ 500ns, > 200mA	—
Current - Reverse Leakage @ Vr	400 µA @ 20 V	200 µA @ 20 V	µA
Capacitance @ Vr, F	50 pF @ 4V, 1MHz	66 pF @ 1V, 1MHz	pF
Package / Case	SOD-123	SOD-123	—
Mounting Type	Surface Mount	Surface Mount	—
Operating Temperature - Junction (Max)	125	150	°C
RoHS Status	ROHS3 Compliant	ROHS3 Compliant	—
Product Status	Active	Active	—

Engineering Selection Recommendations

Primary Part Selection (MBR120HW): The MBR120HW is the specified component for applications requiring 1 A average rectified current at 20 V reverse voltage. This part maintains active product status with RoHS3 compliance and unlimited moisture sensitivity classification, supporting standard manufacturing and assembly processes.

Substitute Part Selection (PMEG2005EGWX): The PMEG2005EGWX is suitable as a substitute only in applications where the required average rectified current does not exceed 500 mA. This part offers the following advantages: lower forward voltage drop (390 mV @ 500 mA versus 450 mV @ 1 A), reduced reverse leakage current (200 µA versus 400 µA), and higher maximum junction temperature rating (150°C versus 125°C). The PMEG2005EGWX carries AEC-Q101 automotive qualification, indicating suitability for automotive-grade applications. Both parts maintain identical reverse voltage ratings, package configuration, and fast recovery speed characteristics.

Compliance Considerations: Both parts are RoHS3 compliant and carry active product status. The PMEG2005EGWX is REACH unaffected, while the MBR120HW is REACH affected. Selection between these parts in REACH-regulated applications requires verification of end-use requirements.

Frequently Asked Questions (FAQ)

Q: Can the PMEG2005EGWX replace the MBR120HW in all applications?

A: No. The PMEG2005EGWX is limited to applications requiring maximum 500 mA average rectified current. Applications requiring the full 1 A capacity of the MBR120HW cannot use this substitute.

Q: What are the key electrical differences between these parts?

A: The primary difference is current rating: MBR120HW is rated for 1 A while PMEG2005EGWX is rated for 500 mA. The PMEG2005EGWX exhibits lower forward voltage drop and reverse leakage current. Both parts share identical 20 V reverse voltage ratings and fast recovery characteristics.

Q: Are both parts physically compatible in the same PCB footprint?

A: Yes. Both parts use the SOD-123 surface mount package with identical mechanical dimensions and pin configuration, allowing direct PCB footprint compatibility.

Q: What is the significance of the AEC-Q101 qualification on the PMEG2005EGWX?

A: AEC-Q101 qualification indicates the PMEG2005EGWX meets automotive industry reliability and quality standards. This qualification is relevant only for applications requiring automotive-grade components.

Q: How do the operating temperature ranges compare?

A: The MBR120HW operates from -65°C to 125°C junction temperature. The PMEG2005EGWX operates to a maximum junction temperature of 150°C, providing 25°C additional thermal margin in high-temperature applications.

Q: Are there packaging differences between these parts?

A: The MBR120HW is supplied in Tape & Reel (TR) packaging. The PMEG2005EGWX is supplied in Cut Tape (CT) and Digi-Reel® packaging. Both packaging formats are standard for surface mount component assembly.

Q: Which part should be selected for new designs?

A: For new designs, select based on actual current requirements. If the application requires 1 A capacity, use MBR120HW. If maximum current does not exceed 500 mA, either part is acceptable; the PMEG2005EGWX offers performance advantages in forward voltage drop and reverse leakage characteristics.

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