SR302HA0G Schottky Diode Equivalent & Substitute Parts

Part Overview

The SR302HA0G is a 20V, 3A Schottky rectifier diode manufactured by Taiwan Semiconductor Corporation in DO-201AD axial through-hole packaging. This component is classified as Active product status and carries AEC-Q101 automotive qualification. The SR302HA0G is suitable for applications requiring fast recovery Schottky diode performance in power supply circuits, reverse polarity protection, and general rectification tasks.

Equivalent and substitute parts are identified based on matching electrical specifications including reverse voltage rating, average rectified current capacity, forward voltage characteristics, and recovery speed. Alternative sources and packaging configurations are available for design flexibility and supply chain optimization.

Substiute Parts

SR302HA0G

Taiwan Semiconductor CorporationIn Stock: 1021SR302HA0G Datasheet

Current PartRFQ

SR302 A0G

Taiwan Semiconductor CorporationIn Stock: 4166SR302 A0G Datasheet

Parametric EquivalentRFQ

1N5820-E3/73

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

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1N5820-TP

Micro Commercial CoIn Stock: 139631N5820-TP Datasheet

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SB320-E3/54

Vishay General Semiconductor - Diodes DivisionIn Stock: 8282SB320-E3/54 Datasheet

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SB520

onsemiIn Stock: 2312SB520 Datasheet

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SB520-E3/54

Vishay General Semiconductor - Diodes DivisionIn Stock: 11612SB520-E3/54 Datasheet

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SB520-E3/73

Vishay General Semiconductor - Diodes DivisionIn Stock: 4436SB520-E3/73 Datasheet

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Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the SR302HA0G are classified into two categories based on electrical and mechanical compatibility:

Category 1: Parametric Equivalents (Direct Substitutes) Parts that match all critical electrical parameters including 20V reverse voltage rating, 3A average rectified current, fast recovery speed characteristics, and identical DO-201AD through-hole packaging. These parts are interchangeable without circuit modification.

Category 2: Similar Alternatives (Functional Substitutes) Parts that maintain the 20V reverse voltage rating and DO-201AD package but differ in one or more of the following parameters: average rectified current capacity (5A versus 3A), forward voltage characteristics, reverse leakage current, or operating temperature range. These parts function in the same circuit topology but may exhibit different thermal or electrical performance characteristics.

Key Parameters Determining Substitution:

• Voltage - DC Reverse (Vr) (Max): 20V (mandatory match)
• Technology: Schottky (mandatory match)
• Package / Case: DO-201AD, Axial (mandatory match for mechanical compatibility)
• Mounting Type: Through Hole (mandatory match)
• Current - Average Rectified (Io): 3A minimum requirement
• Speed: Fast Recovery ≤ 500ns, > 200mA (Io) (mandatory match)

Parameter Comparison

Engineering Selection Recommendations

Parametric Equivalent (Direct Substitution):

SR302 A0G is the direct parametric equivalent to SR302HA0G, differing only in packaging configuration (Tape & Box versus Bulk). Both parts are manufactured by Taiwan Semiconductor Corporation, carry identical electrical specifications, and maintain Active product status. Selection between these two depends on procurement and assembly requirements rather than electrical performance.

Similar Alternatives (Functional Substitution):

1N5820-E3/73 and 1N5820-TP are functionally compatible alternatives from established manufacturers (Vishay and Micro Commercial Co respectively). Both maintain the 20V/3A electrical specification and fast recovery characteristics. The 1N5820-E3/73 exhibits lower forward voltage (475 mV versus 550 mV) and higher reverse leakage current (2 mA versus 500 µA), while the 1N5820-TP matches reverse leakage characteristics. Both are Active status products with ROHS3 compliance.

SB320-E3/54 provides an alternative from Vishay with improved operating temperature range (-65°C to 150°C versus -55°C to 125°C) and moderate forward voltage (490 mV). This part is suitable for applications requiring extended temperature performance.

SB520-E3/54 and SB520-E3/73 are higher current rated alternatives (5A versus 3A) from Vishay, suitable for applications where increased current capacity is required. Both maintain 20V reverse voltage rating and fast recovery characteristics with extended temperature range (-65°C to 150°C). These parts are functionally compatible but operate at different current levels.

All substitute parts carry ROHS3 compliance, AEC-Q101 automotive qualification (where applicable), and Active product status, ensuring regulatory and supply chain continuity.

Frequently Asked Questions (FAQ)

Q: Can SR302 A0G be used as a direct replacement for SR302HA0G?

A: Yes. SR302 A0G is a parametric equivalent with identical electrical specifications. The only difference is packaging format (Tape & Box versus Bulk). Both parts are manufactured by Taiwan Semiconductor Corporation and carry the same electrical ratings, forward voltage characteristics, and operating temperature range.

Q: What is the difference between the SR302HA0G and 1N5820-TP?

A: Both parts share the same 20V reverse voltage rating, 3A average rectified current, and fast recovery speed. The 1N5820-TP exhibits lower forward voltage (475 mV versus 550 mV at 3A), which results in reduced power dissipation. The 1N5820-TP is manufactured by Micro Commercial Co and is supplied in Cut Tape packaging. Operating temperature ranges are identical (-55°C to 125°C).

Q: Can I use SB520-E3/54 in place of SR302HA0G?

A: SB520-E3/54 is functionally compatible but rated for 5A average rectified current versus 3A for the SR302HA0G. The higher current rating does not prevent substitution in circuits designed for 3A operation. SB520-E3/54 offers an extended operating temperature range (-65°C to 150°C) and lower forward voltage (480 mV at 5A). This part is suitable for applications requiring higher current capacity or improved thermal performance.

Q: What are the key parameters that determine if a part can substitute for SR302HA0G?

A: The critical parameters are: 20V reverse voltage rating, Schottky technology, DO-201AD through-hole package, fast recovery speed (≤ 500ns), and minimum 3A average rectified current capacity. Parts matching these specifications are electrically and mechanically compatible. Forward voltage, reverse leakage current, and operating temperature range may vary between manufacturers but do not prevent functional substitution.

Q: Are all substitute parts ROHS3 compliant?

A: Yes. All listed substitute parts carry ROHS3 compliance status, ensuring regulatory alignment with environmental and hazardous substance restrictions.

Q: What is the difference between Cut Tape and Tape & Box packaging?

A: Cut Tape (CT) packaging supplies individual components on cut tape segments, suitable for automated assembly processes. Tape & Box (TB) packaging supplies components on continuous tape wound on reels and boxed for storage. Both packaging formats contain identical components; the difference is in presentation and handling for manufacturing processes.

Q: Why does 1N5820-E3/73 show higher reverse leakage current (2 mA) compared to SR302HA0G (500 µA)?

A: Reverse leakage current variation between manufacturers reflects different manufacturing processes and quality control specifications. Both values are within acceptable operating parameters for Schottky diodes. The higher leakage in 1N5820-E3/73 may result in slightly increased power dissipation in reverse bias conditions but does not prevent functional substitution in standard applications.

Q: Can I substitute SR302HA0G with a part rated for higher current, such as SB520-E3/73 (5A)?

A: Yes. SB520-E3/73 is rated for 5A average rectified current and maintains the 20V reverse voltage rating and DO-201AD package. Higher current rating does not prevent use in 3A circuits. The part will operate within its design envelope and may provide improved thermal margin in the application.