SR510H Schottky Diode Equivalent & Substitute Parts

Part Overview

The SR510H is an active-status Schottky rectifier diode manufactured by Taiwan Semiconductor Corporation, rated for 100 V DC reverse voltage and 5 A average rectified current in a DO-201AD axial through-hole package. This component is qualified to AEC-Q101 automotive standards and is ROHS3 compliant. Equivalent and substitute parts are identified based on matching electrical performance parameters, package compatibility, and operational specifications to support component procurement flexibility and supply chain continuity.

Key Parameters

Parameter	Value
Voltage - DC Reverse (Vr) (Max)	100 V
Current - Average Rectified (Io)	5 A
Voltage - Forward (Vf) (Max) @ If	850 mV @ 5 A
Speed	Fast Recovery ≤ 500ns, > 200mA (Io)
Current - Reverse Leakage @ Vr	100 µA @ 100 V
Package / Case	DO-201AD, Axial
Mounting Type	Through Hole
Operating Temperature - Junction	-55°C ~ 150°C
Technology	Schottky
RoHS Status	ROHS3 Compliant

Substitute Part Grouping Explanation

Substitution of the SR510H is determined by equivalence in the following critical parameters: reverse voltage rating (100 V), average rectified current capacity (5 A), fast recovery Schottky technology, DO-201AD axial through-hole package, and operating temperature range. Parts are grouped into two categories:

Parametric Equivalents maintain identical electrical specifications and package form factor, differing only in packaging method (Tape & Reel versus Cut Tape) or manufacturer identity while preserving all functional characteristics.

Similar Substitutes share the same reverse voltage and package type but may differ in average rectified current rating, forward voltage characteristics, reverse leakage current, or operating temperature range. These parts are suitable for applications where the specified parameter variance is acceptable within system design margins.

Parameter Comparison

Part Number	Manufacturer	Vr (Max)	Io (A)	Vf (Max) @ If	Reverse Leakage @ Vr	Package	Temp Range (Tj)	Packaging Type
SR510H	Taiwan Semiconductor Corporation	100 V	5 A	850 mV @ 5 A	100 µA @ 100 V	DO-201AD	-55°C ~ 150°C	Tape & Reel (TR)
SR510 A0G	Taiwan Semiconductor Corporation	100 V	5 A	850 mV @ 5 A	100 µA @ 100 V	DO-201AD	-55°C ~ 150°C	Cut Tape (CT)
SB5100-T	Diodes Incorporated	100 V	5 A	800 mV @ 5 A	500 µA @ 100 V	DO-201AD	-65°C ~ 150°C	Cut Tape (CT)
SB5100	Fairchild Semiconductor	100 V	5 A	790 mV @ 5 A	500 µA @ 100 V	DO-201AA, DO-27	-50°C ~ 150°C	Not specified
SB3100-T	Diodes Incorporated	100 V	3 A	790 mV @ 3 A	500 µA @ 100 V	DO-201AD	-65°C ~ 150°C	Cut Tape (CT)

Engineering Selection Recommendations

SR510 A0G is a direct parametric equivalent to SR510H, maintaining identical electrical specifications and DO-201AD package geometry. The only difference is packaging method (Cut Tape versus Tape & Reel). This part is suitable for direct substitution where packaging format does not constrain procurement or assembly processes.

SB5100-T (Diodes Incorporated) is a parametric equivalent for 5 A applications, matching the SR510H in reverse voltage and current rating with DO-201AD package compatibility. Forward voltage is 50 mV lower (800 mV versus 850 mV), reverse leakage is higher (500 µA versus 100 µA), and operating temperature range extends to -65°C. This part is suitable for applications where the specified parameter variations are within acceptable design margins.

SB5100 (Fairchild Semiconductor) is a parametric equivalent for 5 A applications with 100 V reverse voltage rating. Forward voltage is 60 mV lower (790 mV versus 850 mV), reverse leakage is higher (500 µA versus 100 µA), and operating temperature minimum is -50°C (versus -55°C). Package variants include DO-201AA and DO-27 axial configurations. This part is suitable where package variant compatibility is confirmed.

SB3100-T (Diodes Incorporated) is a similar substitute with reduced current rating (3 A versus 5 A). Reverse voltage and DO-201AD package are matched. This part is suitable only for applications where the 3 A current limit is sufficient and does not exceed system requirements.

All substitute parts maintain ROHS3 compliance, Schottky technology, fast recovery characteristics, and through-hole mounting compatibility with the SR510H.

Frequently Asked Questions (FAQ)

Q: Can SR510 A0G replace SR510H directly?

A: Yes. SR510 A0G is a parametric equivalent with identical electrical specifications (100 V, 5 A, 850 mV forward voltage, 100 µA reverse leakage) and DO-201AD package. The only difference is packaging method (Cut Tape versus Tape & Reel). Direct substitution is supported.

Q: What is the difference between SB5100-T and SR510H?

A: SB5100-T matches SR510H in reverse voltage (100 V), current rating (5 A), and DO-201AD package. Forward voltage is 50 mV lower (800 mV), reverse leakage is higher (500 µA), and operating temperature range extends to -65°C. These parameter differences must be evaluated against application requirements.

Q: Can SB3100-T be used instead of SR510H?

A: SB3100-T is suitable only for applications where the reduced current rating (3 A versus 5 A) does not exceed system requirements. Reverse voltage (100 V) and package (DO-201AD) are compatible. Current capacity must be verified before substitution.

Q: Are all substitute parts automotive qualified?

A: SR510H carries AEC-Q101 automotive qualification. Substitute parts SB5100-T, SB5100, and SB3100-T do not list AEC-Q101 qualification in the provided specifications. Automotive application requirements must be confirmed with manufacturer documentation.

Q: What is the difference between DO-201AD and DO-201AA packages?

A: Both are axial through-hole Schottky diode packages. DO-201AD and DO-201AA are compatible package variants for the same functional device class. Physical dimensions and lead spacing should be verified for PCB layout compatibility.

Q: Does forward voltage difference affect circuit performance?

A: Forward voltage differences (790 mV to 850 mV) affect voltage drop across the diode during conduction. Applications with tight voltage regulation or low-voltage designs must evaluate whether the specified forward voltage variance remains within acceptable operating margins.

Q: What does reverse leakage current variation mean for my application?

A: Reverse leakage current (100 µA to 500 µA at 100 V) represents DC current flow when the diode is reverse-biased. Higher leakage increases power dissipation and may affect circuit performance in high-impedance or precision analog applications. Application requirements determine acceptable leakage limits.

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