SB320E-G Schottky Diode Equivalent & Substitute Parts

Part Overview

The SB320E-G is an active Schottky rectifier diode manufactured by Comchip Technology, rated for 20V DC reverse voltage and 3A average rectified current in a through-hole DO-201AD axial package. This component is designed for fast recovery applications requiring low forward voltage drop and rapid switching characteristics. Equivalent and substitute parts are identified based on matching electrical specifications, package compatibility, and thermal operating range to ensure direct functional replacement in circuit applications.

Substiute Parts

SB320E-G

Comchip TechnologyIn Stock: 916SB320E-G Datasheet

Current PartRFQ

1N5820-E3/73

Vishay General Semiconductor - Diodes DivisionIn Stock: 45831N5820-E3/73 Datasheet

MFR RecommendedRFQ

1N5820G

onsemiIn Stock: 34141N5820G Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the SB320E-G are qualified based on the following critical parameters that determine functional equivalence:

Electrical Matching Criteria:

• Voltage - DC Reverse (Vr) (Max): 20V minimum
• Current - Average Rectified (Io): 3A minimum
• Technology: Schottky diode
• Speed: Fast Recovery ≤ 500ns, > 200mA (Io)
• Operating Temperature - Junction: -65°C to 125°C range

Mechanical Compatibility:

• Mounting Type: Through Hole
• Package / Case: DO-201AD or equivalent axial package (DO-201AA, DO-27)

Compliance Requirements:

• RoHS3 Compliant
• REACH Unaffected
• ECCN: EAR99

The substitute parts 1N5820-E3/73 (Vishay General Semiconductor - Diodes Division) and 1N5820G (onsemi) meet all electrical and mechanical requirements for direct replacement. Both parts maintain the 20V/3A rating, fast recovery speed characteristic, and through-hole axial mounting configuration. Packaging format differs (Cut Tape vs. Bulk) but does not affect functional compatibility.

Parameter Comparison

Engineering Selection Recommendations

All three parts—SB320E-G, 1N5820-E3/73, and 1N5820G—are active products with identical compliance certifications (ROHS3 Compliant, REACH Unaffected, EAR99 classification). Selection between these parts is determined by availability, packaging format, and application-specific requirements:

SB320E-G (Comchip Technology): Primary choice when Comchip sourcing is preferred or contractually specified. Tape & Reel packaging supports automated assembly processes. Forward voltage specification of 500 mV @ 3A is within acceptable range for standard rectification applications.

1N5820-E3/73 (Vishay General Semiconductor - Diodes Division): Suitable for applications requiring Cut Tape packaging or when Vishay component qualification is required. Forward voltage of 475 mV @ 3A provides marginally lower conduction losses compared to the main part. Reverse leakage current of 2 mA @ 20V is higher than the main part but remains within acceptable limits for Schottky diode applications.

1N5820G (onsemi): Applicable when onsemi sourcing is mandated or when bulk packaging is acceptable for manual assembly or rework operations. Equivalent electrical performance to the Vishay substitute with identical forward voltage and reverse leakage specifications. Package designation flexibility (DO-201AA, DO-27) accommodates various PCB footprint designs.

All three parts maintain the same thermal operating range (-65°C to 125°C junction temperature) and fast recovery speed characteristic, ensuring functional equivalence in circuit operation.

Frequently Asked Questions (FAQ)

Q: Can 1N5820-E3/73 or 1N5820G be used as direct replacements for SB320E-G without circuit modification?

A: Yes. Both substitute parts meet the electrical specifications (20V reverse voltage, 3A average rectified current, fast recovery speed) and thermal operating range required for the SB320E-G. Through-hole axial mounting is identical or compatible across all three parts. No circuit modification is necessary.

Q: What is the difference between the packaging formats (Tape & Reel, Cut Tape, Bulk)?

A: Tape & Reel (TR) and Cut Tape (CT) packaging are used for automated pick-and-place assembly processes. Bulk packaging is used for manual assembly or rework. The diode itself is electrically identical; packaging format affects only the assembly method and handling process.

Q: Why does the 1N5820-E3/73 have a lower forward voltage (475 mV) compared to the SB320E-G (500 mV)?

A: Forward voltage variation within the specified maximum rating is normal across different manufacturers and production batches. Both values are within acceptable limits for Schottky diode rectification applications. The 475 mV specification for the Vishay part represents a tighter manufacturing tolerance and results in slightly lower conduction losses.

Q: Is the higher reverse leakage current (2 mA) in the substitute parts a concern?

A: No. The reverse leakage current of 2 mA @ 20V in both substitute parts remains within acceptable limits for Schottky diode applications. The difference from the main part (500 µA) is typical across manufacturers and does not affect circuit functionality in standard rectification, power supply, or protection applications.

Q: Are all three parts RoHS and REACH compliant?

A: Yes. SB320E-G, 1N5820-E3/73, and 1N5820G are all ROHS3 Compliant and REACH Unaffected, meeting current environmental and regulatory requirements for electronic component manufacturing and use.

Q: Can the onsemi 1N5820G be used if the PCB footprint is designed for DO-201AD?

A: The onsemi 1N5820G is available in DO-201AA and DO-27 axial packages. While these are standard axial package formats, physical dimensions may vary slightly from DO-201AD. Verify PCB footprint compatibility before substitution. If the footprint is strictly DO-201AD, use the Vishay 1N5820-E3/73 or the original SB320E-G.

Q: What is the operating temperature range for all three parts?

A: All three parts operate across a junction temperature range of -65°C to 125°C, ensuring equivalent thermal performance in industrial, commercial, and consumer applications.