SR802HA0G Schottky Diode Equivalent & Substitute Parts

Part Overview

The SR802HA0G is a 20V, 8A Schottky rectifier diode manufactured by Taiwan Semiconductor Corporation in DO-201AD axial through-hole packaging. This component is classified as an active product with AEC-Q101 automotive qualification and ROHS3 compliance. The SR802HA0G serves as a fast recovery rectifier suitable for power supply and switching applications requiring low forward voltage drop characteristics.

Equivalent and substitute parts are necessary when the primary part becomes unavailable, when alternative sourcing is required for supply chain optimization, or when design flexibility permits operation within the electrical parameter tolerances of alternative manufacturers' offerings.

Key Parameters

Parameter	Value	Unit
Voltage - DC Reverse (Vr) (Max)	20	V
Current - Average Rectified (Io)	8	A
Voltage - Forward (Vf) (Max) @ If	550 mV @ 8 A	mV
Speed	Fast Recovery ≤ 500ns, > 200mA (Io)	ns
Current - Reverse Leakage @ Vr	500	µA @ 20 V
Operating Temperature - Junction	-55°C ~ 125°C	°C
Package / Case	DO-201AD, Axial	—
Mounting Type	Through Hole	—
Technology	Schottky	—
RoHS Status	ROHS3 Compliant	—
Grade	Automotive	—
Qualification	AEC-Q101	—

Substitute Part Grouping Explanation

Substitution of the SR802HA0G is determined by strict electrical and mechanical compatibility within the following parameters:

Critical Substitution Parameters:

Voltage - DC Reverse (Vr) (Max): Must equal or exceed 20V
Package / Case: Must be DO-201AD, Axial through-hole
Mounting Type: Must be Through Hole
Technology: Must be Schottky
Current - Average Rectified (Io): Must support the application current requirement

Acceptable Substitution Logic:

Substitute parts are grouped into two categories based on current rating:

Direct Current Equivalents (5A - 8A): Parts with current ratings between 5A and 8A maintain electrical performance characteristics closest to the SR802HA0G. These include SB520-E3/54, SB520-E3/73, and SB520, all rated at 5A. While these parts carry lower current ratings than the 8A SR802HA0G, they operate within the same voltage class (20V) and package specification (DO-201AD).
Reduced Current Substitutes (3A): Parts rated at 3A including 1N5820-E3/73, 1N5820-TP, and SB320-E3/54 are suitable only for applications where the circuit current requirement does not exceed 3A. These maintain voltage compatibility (20V) and package conformance (DO-201AD) but represent a significant reduction in current capacity.

All substitute parts maintain ROHS3 compliance, through-hole mounting, and Schottky technology. Forward voltage characteristics vary within acceptable ranges for fast recovery rectifier applications.

Parameter Comparison

Part Number	Manufacturer	Vr (Max)	Io (A)	Vf (Max) @ If	Speed	Ir @ Vr	Tj (Operating)	Package	Product Status
SR802HA0G	Taiwan Semiconductor Corporation	20V	8A	550 mV @ 8A	≤ 500ns, > 200mA	500 µA @ 20V	-55°C ~ 125°C	DO-201AD	Active
SB520-E3/54	Vishay General Semiconductor - Diodes Division	20V	5A	480 mV @ 5A	≤ 500ns, > 200mA	500 µA @ 20V	-65°C ~ 150°C	DO-201AD	Active
SB520-E3/73	Vishay General Semiconductor - Diodes Division	20V	5A	480 mV @ 5A	≤ 500ns, > 200mA	500 µA @ 20V	-65°C ~ 150°C	DO-201AD	Active
SB520	onsemi	20V	5A	550 mV @ 5A	≤ 500ns, > 200mA	500 µA @ 20V	-55°C ~ 150°C	DO-201AD	Obsolete
1N5820-E3/73	Vishay General Semiconductor - Diodes Division	20V	3A	475 mV @ 3A	≤ 500ns, > 200mA	2 mA @ 20V	-65°C ~ 125°C	DO-201AD	Active
1N5820-TP	Micro Commercial Co	20V	3A	475 mV @ 3A	≤ 500ns, > 200mA	500 µA @ 20V	-55°C ~ 125°C	DO-201AD	Active
SB320-E3/54	Vishay General Semiconductor - Diodes Division	20V	3A	490 mV @ 3A	≤ 500ns, > 200mA	500 µA @ 20V	-65°C ~ 150°C	DO-201AD	Active

Engineering Selection Recommendations

Primary Substitutes (Preferred):

SB520-E3/54 and SB520-E3/73 are the preferred substitutes for the SR802HA0G. Both parts are manufactured by Vishay General Semiconductor - Diodes Division and carry active product status. These 5A-rated Schottky diodes maintain the 20V reverse voltage specification and DO-201AD package conformance. The forward voltage characteristics (480 mV @ 5A) are lower than the SR802HA0G (550 mV @ 8A), resulting in improved efficiency in rectification applications. Both parts support extended operating temperature ranges (-65°C ~ 150°C) and carry ROHS3 compliance with unlimited moisture sensitivity level (MSL 1).

Secondary Substitutes (Current-Limited Applications):

1N5820-E3/73, 1N5820-TP, and SB320-E3/54 are suitable substitutes only for applications where circuit current does not exceed 3A. All three maintain 20V reverse voltage rating and DO-201AD packaging. 1N5820-E3/73 and 1N5820-TP are manufactured by Vishay and Micro Commercial Co respectively, both with active product status. SB320-E3/54 (Vishay) offers the widest operating temperature range (-65°C ~ 150°C). These parts are not suitable for direct replacement in circuits requiring the full 8A capacity of the SR802HA0G.

Obsolete Status Consideration:

SB520 (onsemi) carries obsolete product status and should not be selected for new designs or long-term supply chain planning, despite electrical compatibility with the SR802HA0G.

Compliance and Qualification:

All recommended active substitutes maintain ROHS3 compliance and REACH unaffected status. The SR802HA0G carries AEC-Q101 automotive qualification; substitute parts do not explicitly list this qualification in the provided data. Applications requiring automotive qualification should confirm qualification status with manufacturers before selection.

Frequently Asked Questions (FAQ)

Q: Can the SB520-E3/54 directly replace the SR802HA0G in all applications?

A: The SB520-E3/54 is electrically compatible with the SR802HA0G for applications where circuit current does not exceed 5A. Both parts share identical 20V reverse voltage rating, DO-201AD package specification, and fast recovery Schottky technology. The SB520-E3/54 exhibits lower forward voltage (480 mV @ 5A versus 550 mV @ 8A), which may improve circuit efficiency. However, the SR802HA0G is rated for 8A average rectified current, while the SB520-E3/54 is rated for 5A. Applications requiring the full 8A capacity must use the SR802HA0G or equivalent 8A-rated parts.

Q: What is the difference between 1N5820-E3/73 and 1N5820-TP?

A: Both 1N5820-E3/73 and 1N5820-TP are 3A-rated Schottky diodes with identical electrical specifications (20V reverse voltage, 475 mV forward voltage @ 3A, DO-201AD package). The primary difference is manufacturer: 1N5820-E3/73 is manufactured by Vishay General Semiconductor - Diodes Division, while 1N5820-TP is manufactured by Micro Commercial Co. The 1N5820-E3/73 supports a wider operating temperature range (-65°C ~ 125°C versus -55°C ~ 125°C). Both parts carry active product status and ROHS3 compliance.

Q: Why is the SB520 listed as obsolete?

A: The SB520 manufactured by onsemi carries obsolete product status, indicating it is no longer in active production. While the part remains electrically compatible with the SR802HA0G (20V, 5A, DO-201AD), obsolete status means supply availability is limited and future procurement cannot be guaranteed. Active alternatives such as SB520-E3/54 and SB520-E3/73 should be selected for new designs and ongoing production.

Q: Can I use a 3A-rated diode in place of the 8A SR802HA0G?

A: A 3A-rated diode such as 1N5820-E3/73, 1N5820-TP, or SB320-E3/54 can be used only in applications where the actual circuit current requirement does not exceed 3A. These parts maintain voltage compatibility (20V) and package conformance (DO-201AD). However, they are not suitable for circuits designed to operate at or near the 8A rating of the SR802HA0G. Exceeding the current rating of a diode results in excessive heat generation and component failure.

Q: Are all substitute parts ROHS3 compliant?

A: Yes, all substitute parts listed in this reference maintain ROHS3 compliance. The SR802HA0G also carries ROHS3 compliance. All parts are REACH unaffected and carry EAR99 export classification.

Q: What is the significance of forward voltage differences between substitute parts?

A: Forward voltage (Vf) represents the voltage drop across the diode during forward conduction. The SR802HA0G exhibits 550 mV @ 8A, while SB520-E3/54 and SB520-E3/73 exhibit 480 mV @ 5A. Lower forward voltage results in reduced power dissipation and improved circuit efficiency. However, forward voltage is typically specified at the part's rated current; direct comparison between parts with different current ratings requires analysis at the actual operating current of the application.

Q: Does the operating temperature range affect substitution suitability?

A: Operating temperature range affects substitution suitability only if the application requires operation outside the temperature range of the substitute part. The SR802HA0G operates from -55°C to 125°C. SB520-E3/54 and SB520-E3/73 support -65°C to 150°C, providing wider temperature coverage. The 3A-rated substitutes (1N5820-E3/73, 1N5820-TP, SB320-E3/54) support ranges from -55°C to 125°C or -65°C to 150°C. Applications operating within the SR802HA0G temperature range are compatible with all listed substitutes.

Q: What does "Fast Recovery ≤ 500ns, > 200mA (Io)" mean?

A: This specification indicates the diode exhibits fast recovery characteristics with recovery time of 500 nanoseconds or less when switching from forward to reverse bias at currents exceeding 200 milliamps. All listed substitute parts maintain this fast recovery specification, ensuring compatibility in switching and rectification applications where rapid diode turn-off is required.

Request Quote (Ships tomorrow)

Part Number

Quantity

Company

Contact Name

E-mail

Message