SR810 Schottky Diode Equivalent & Substitute Parts

Part Overview

The SR810 is an active Schottky rectifier diode manufactured by Taiwan Semiconductor Corporation, rated for 100V DC reverse voltage and 8A average rectified current in a DO-201AD axial through-hole package. This component is designed for fast recovery applications with switching speeds ≤500ns at currents >200mA. The SR810 is ROHS3 compliant and carries unlimited moisture sensitivity classification, making it suitable for standard industrial and commercial applications.

Substitute parts are identified when equivalent electrical performance can be maintained within the specified parameter ranges while accommodating application-specific current requirements or inventory availability constraints.

Key Parameters

Parameter	Value	Unit
Voltage - DC Reverse (Vr) (Max)	100	V
Current - Average Rectified (Io)	8	A
Voltage - Forward (Vf) (Max) @ If	920 mV @ 8 A	mV
Speed - Fast Recovery	≤500ns, >200mA (Io)	ns
Current - Reverse Leakage @ Vr	100	µA @ 100 V
Package / Case	DO-201AD, Axial	—
Mounting Type	Through Hole	—
Operating Temperature - Junction	-55°C ~ 150°C	°C
Technology	Schottky	—
RoHS Status	ROHS3 Compliant	—

Substitute Part Grouping Explanation

Substitution eligibility for the SR810 is determined by the following criteria:

Mandatory Matching Parameters:

Voltage - DC Reverse (Vr) (Max): 100V
Package / Case: DO-201AD, Axial
Mounting Type: Through Hole
Technology: Schottky
Speed: Fast Recovery ≤500ns, >200mA (Io)
RoHS Status: ROHS3 Compliant

Variable Parameters (Application-Dependent):

Current - Average Rectified (Io): Substitute parts with lower current ratings are acceptable for applications requiring reduced current capacity
Voltage - Forward (Vf) (Max) @ If: Minor variations acceptable within thermal and efficiency constraints
Current - Reverse Leakage @ Vr: Variations acceptable within application leakage specifications
Operating Temperature - Junction: Extended ranges acceptable for enhanced thermal performance

The identified substitute parts SB3100-T and SB5100-T maintain all mandatory matching parameters while offering alternative current ratings of 3A and 5A respectively. Both substitutes are manufactured by Diodes Incorporated and are available in Cut Tape packaging.

Parameter Comparison

Parameter	SR810 (Taiwan Semiconductor)	SB3100-T (Diodes Inc.)	SB5100-T (Diodes Inc.)
Manufacturer Part Number	SR810	SB3100-T	SB5100-T
Voltage - DC Reverse (Vr) (Max)	100 V	100 V	100 V
Current - Average Rectified (Io)	8 A	3 A	5 A
Voltage - Forward (Vf) (Max) @ If	920 mV @ 8 A	790 mV @ 3 A	800 mV @ 5 A
Speed - Fast Recovery	≤500ns, >200mA (Io)	≤500ns, >200mA (Io)	≤500ns, >200mA (Io)
Current - Reverse Leakage @ Vr	100 µA @ 100 V	500 µA @ 100 V	500 µA @ 100 V
Package / Case	DO-201AD, Axial	DO-201AD, Axial	DO-201AD, Axial
Mounting Type	Through Hole	Through Hole	Through Hole
Operating Temperature - Junction	-55°C ~ 150°C	-65°C ~ 150°C	-65°C ~ 150°C
Technology	Schottky	Schottky	Schottky
RoHS Status	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant
Packaging Type	Tape & Reel (TR)	Cut Tape (CT)	Cut Tape (CT)
Inventory Status	2100 Pcs New Original In Stock	1232 Pcs New Original In Stock	3773 Pcs New Original In Stock

Engineering Selection Recommendations

SR810 Selection: The SR810 is the primary component choice for applications requiring the full 8A current capacity within the 100V rating. This part is active, ROHS3 compliant, and carries REACH Unaffected status. The SR810 is available in Tape & Reel packaging with 2100 units in stock.

SB5100-T Selection: The SB5100-T is the preferred substitute when the application current requirement does not exceed 5A. This part maintains all mandatory electrical and mechanical parameters, including the 100V reverse voltage rating, DO-201AD package, and fast recovery speed specification. The SB5100-T offers extended operating temperature range (-65°C to 150°C versus -55°C to 150°C) and is ROHS3 compliant. Inventory availability is 3773 units in Cut Tape packaging.

SB3100-T Selection: The SB3100-T is applicable for applications requiring 3A or less. This part meets all mandatory substitution criteria and provides the lowest forward voltage drop (790 mV @ 3A) among the three options. The SB3100-T is ROHS3 compliant with extended temperature range (-65°C to 150°C). Inventory availability is 1232 units in Cut Tape packaging.

Compliance Basis: All three parts are ROHS3 compliant, REACH unaffected, and classified under ECCN EAR99 with HTSUS code 8541.10.0080. Moisture sensitivity level is 1 (Unlimited) for all parts, indicating no special handling requirements.

Frequently Asked Questions (FAQ)

Q: Can the SB5100-T replace the SR810 in all applications?

A: The SB5100-T is a valid substitute only for applications where the circuit current requirement does not exceed 5A. The SR810 is rated for 8A average rectified current, while the SB5100-T is rated for 5A. If the application requires the full 8A capacity, the SR810 must be used. Both parts share identical 100V reverse voltage rating, DO-201AD package, and fast recovery characteristics.

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

A: Tape & Reel (TR) packaging is supplied on continuous tape wound on reels, suitable for automated assembly processes. Cut Tape (CT) packaging is supplied as individual tape segments, suitable for manual assembly or smaller production runs. Both packaging types contain the same DO-201AD component; the difference is in delivery format and handling method.

Q: Are there temperature range differences between the SR810 and substitute parts?

A: The SR810 operates from -55°C to 150°C junction temperature. Both SB3100-T and SB5100-T operate from -65°C to 150°C junction temperature, providing a 10°C lower minimum operating temperature. For applications operating above -55°C, this difference is not a limiting factor.

Q: How do forward voltage drops compare across these parts?

A: Forward voltage varies with current rating. The SR810 exhibits 920 mV @ 8A, the SB5100-T exhibits 800 mV @ 5A, and the SB3100-T exhibits 790 mV @ 3A. Forward voltage drop is lower at reduced current levels. Circuit design must account for the specific forward voltage of the selected part at its operating current.

Q: What is the significance of reverse leakage current differences?

A: The SR810 specifies 100 µA reverse leakage @ 100V, while both SB3100-T and SB5100-T specify 500 µA @ 100V. Reverse leakage current represents the small current flowing through the diode in reverse bias condition. Applications sensitive to leakage current should prioritize the SR810. For most standard rectification applications, the difference is not critical.

Q: Can these parts be used interchangeably in existing designs?

A: Interchangeability depends on circuit current requirements and leakage specifications. The SR810 and SB5100-T are mechanically and electrically compatible in the same PCB footprint (DO-201AD axial through-hole). Substitution of SB3100-T is valid only if circuit current does not exceed 3A. All three parts are Schottky technology with identical 100V rating and fast recovery characteristics, ensuring compatible switching behavior.

Q: What compliance certifications apply to all three parts?

A: All three parts are ROHS3 compliant, REACH unaffected, and classified as EAR99 for export control purposes. Moisture sensitivity level is 1 (Unlimited) for all parts, indicating no special moisture protection or baking requirements during storage or assembly.

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