MBR0520L_G Equivalent & Substitute Parts

Part Overview

The MBR0520L_G is a Schottky rectifier diode rated for 20 V DC reverse voltage and 500 mA average rectified current in a surface mount SOD-123 package. This component is manufactured by onsemi and is currently classified as obsolete. Due to its obsolete status, identifying functionally equivalent substitute parts is necessary to maintain design continuity and ensure component availability for production and repair applications.

Key Parameters

Parameter	Value	Unit
Voltage - DC Reverse (Vr) (Max)	20	V
Current - Average Rectified (Io)	500	mA
Voltage - Forward (Vf) (Max) @ If	385	mV @ 500 mA
Speed	Fast Recovery ≤ 500ns, > 200mA (Io)	—
Current - Reverse Leakage @ Vr	250	µA @ 20 V
Operating Temperature - Junction	-65 to 125	°C
Package / Case	SOD-123	—
Mounting Type	Surface Mount	—
Technology	Schottky	—

Substitute Part Grouping Explanation

Substitute parts for the MBR0520L_G are identified based on matching the following critical electrical and mechanical parameters:

Voltage Rating: DC reverse voltage of 20 V (maximum)
Current Rating: Average rectified current of 500 mA
Technology: Schottky diode type
Package: SOD-123 surface mount package
Speed Characteristic: Fast recovery with switching time ≤ 500 ns for currents > 200 mA
Operating Temperature Range: -65°C to 125°C junction temperature

The MBR0520-TP manufactured by Micro Commercial Co meets all these core electrical and mechanical requirements, making it a direct functional equivalent despite differences in forward voltage characteristics and reverse leakage specifications within acceptable engineering tolerances.

Parameter Comparison

Parameter	MBR0520L_G (onsemi)	MBR0520-TP (Micro Commercial Co)
Voltage - DC Reverse (Vr) (Max)	20 V	20 V
Current - Average Rectified (Io)	500 mA	500 mA
Voltage - Forward (Vf) (Max) @ If	385 mV @ 500 mA	450 mV @ 500 mA
Speed	Fast Recovery ≤ 500ns, > 200mA (Io)	Fast Recovery ≤ 500ns, > 200mA (Io)
Current - Reverse Leakage @ Vr	250 µA @ 20 V	200 µA @ 20 V
Operating Temperature - Junction	-65°C to 125°C	-65°C to 125°C
Package / Case	SOD-123	SOD-123
Mounting Type	Surface Mount	Surface Mount
Technology	Schottky	Schottky
Product Status	Obsolete	Active

Engineering Selection Recommendations

The MBR0520-TP is the identified substitute for the obsolete MBR0520L_G. Selection of this substitute is based on the following factors:

Electrical Compatibility: Both devices share identical voltage and current ratings (20 V, 500 mA), identical speed characteristics (fast recovery ≤ 500 ns), and identical operating temperature range (-65°C to 125°C). The forward voltage difference of 65 mV (385 mV versus 450 mV at 500 mA) and reverse leakage difference of 50 µA (250 µA versus 200 µA at 20 V) fall within normal manufacturing tolerances for Schottky diodes and do not prevent functional substitution in standard rectification applications.

Package Compatibility: Both devices use the SOD-123 surface mount package, ensuring mechanical and thermal compatibility with existing PCB layouts and assembly processes.

Product Status: The MBR0520-TP is classified as active, providing assured long-term availability and supply chain continuity compared to the obsolete MBR0520L_G.

Compliance: The MBR0520-TP carries ROHS3 compliance certification and maintains REACH unaffected status, meeting current regulatory requirements for electronic components.

Frequently Asked Questions (FAQ)

Q: Can the MBR0520-TP directly replace the MBR0520L_G in existing designs?

A: Yes. Both devices are Schottky rectifier diodes with identical voltage ratings (20 V), current ratings (500 mA), speed characteristics (fast recovery ≤ 500 ns), operating temperature range (-65°C to 125°C), and SOD-123 package. The electrical parameter differences (forward voltage and reverse leakage) are within normal manufacturing tolerances for this device category and do not prevent functional substitution.

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

A: The MBR0520L_G specifies a maximum forward voltage of 385 mV at 500 mA, while the MBR0520-TP specifies 450 mV at the same current. This 65 mV difference represents normal variation in Schottky diode manufacturing and does not affect circuit functionality in standard rectification applications. Circuit designs should account for typical forward voltage ranges rather than relying on minimum values.

Q: Are there packaging differences between these parts?

A: Both parts use the SOD-123 surface mount package. The MBR0520L_G is supplied in standard packaging, while the MBR0520-TP is supplied in Tape & Reel (TR) format. This difference affects only the procurement and assembly process, not the component itself or its electrical performance.

Q: Why is the MBR0520L_G classified as obsolete?

A: The MBR0520L_G is an older onsemi product that has been discontinued. The MBR0520-TP from Micro Commercial Co provides equivalent functionality and is actively manufactured, making it the appropriate choice for new designs and component replacement.

Q: Does the MBR0520-TP meet current regulatory standards?

A: Yes. The MBR0520-TP is ROHS3 compliant and maintains REACH unaffected status, meeting current regulatory requirements for electronic components in most jurisdictions.

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