SR520H Schottky Diode Equivalent & Substitute Parts

Part Overview

The SR520H is an active Schottky rectifier diode manufactured by Taiwan Semiconductor Corporation, rated for 200V DC reverse voltage and 5A average rectified current in a DO-201AD axial through-hole package. This component is designed for fast recovery applications with switching speeds ≤500ns and operates across a junction temperature range of -55°C to 150°C. The SR520H is AEC-Q101 qualified for automotive applications and maintains ROHS3 compliance with unlimited moisture sensitivity rating (MSL 1).

Equivalent and substitute parts are identified when component availability is limited, supply chain disruptions occur, or design flexibility is required while maintaining electrical and mechanical compatibility within specified parameter tolerances.

Substiute Parts

SR520H

Taiwan Semiconductor CorporationIn Stock: 803SR520H Datasheet

Current PartRFQ

SR520 A0G

Taiwan Semiconductor CorporationIn Stock: 5549SR520 A0G Datasheet

Parametric EquivalentRFQ

SR5200-TP

Micro Commercial CoIn Stock: 5110SR5200-TP Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the SR520H are classified into two categories based on electrical parameter alignment and packaging configuration:

Parametric Equivalent Classification: Parts that maintain identical electrical specifications across all critical parameters including reverse voltage rating, average rectified current, forward voltage drop, reverse leakage current, and recovery speed characteristics. These parts differ only in packaging format (Cut Tape versus Tape & Reel) and are direct functional replacements.

Similar Manufacturer Classification: Parts that satisfy the core electrical requirements of reverse voltage, average rectified current, and package form factor but exhibit measurable variations in secondary parameters such as forward voltage drop, reverse leakage current, or operating temperature range. These parts remain functionally compatible within the application's design margins.

Substitution eligibility is determined by the following critical parameters:

• Voltage - DC Reverse (Vr) (Max): 200 V minimum
• Current - Average Rectified (Io): 5 A minimum
• Package / Case: DO-201AD, Axial
• Mounting Type: Through Hole
• Technology: Schottky

Parameter Comparison

Engineering Selection Recommendations

SR520 A0G (Parametric Equivalent): This part is a direct electrical equivalent to the SR520H, manufactured by the same supplier (Taiwan Semiconductor Corporation) with identical electrical specifications. The only distinction is the packaging format: SR520 A0G is supplied in Cut Tape (CT) configuration rather than Tape & Reel (TR). Both parts maintain ROHS3 compliance, AEC-Q101 qualification status, and identical operating temperature ranges. Selection of SR520 A0G is appropriate when Cut Tape packaging meets assembly requirements or when Tape & Reel format is unavailable.

SR5200-TP (Similar Manufacturer): This part satisfies the core electrical requirements of 200V reverse voltage rating and 5A average rectified current in the same DO-201AD through-hole package. The SR5200-TP exhibits a lower forward voltage drop (950 mV versus 1.05 V at 5A) and an extended lower operating temperature limit (-65°C versus -55°C). However, the reverse leakage current is elevated at 500 µA compared to 100 µA for the SR520H. The SR5200-TP is manufactured by Micro Commercial Co and maintains ROHS3 compliance. Selection of SR5200-TP is appropriate when the lower forward voltage characteristic provides system-level benefits and the higher reverse leakage current remains within application tolerance margins.

Frequently Asked Questions (FAQ)

Q: Can SR520 A0G be used as a direct replacement for SR520H in production assemblies?

A: Yes. SR520 A0G is a parametric equivalent with identical electrical specifications. The difference in packaging format (Cut Tape versus Tape & Reel) does not affect electrical performance. Compatibility depends on whether the assembly process accommodates Cut Tape format. Both parts are manufactured by Taiwan Semiconductor Corporation and carry identical certifications.

Q: What are the implications of using SR5200-TP instead of SR520H?

A: SR5200-TP maintains the same 200V reverse voltage rating, 5A current rating, and DO-201AD package form factor. The forward voltage drop is 50 mV lower (950 mV versus 1.05 V at 5A), which reduces power dissipation in the diode. The reverse leakage current is 400 µA higher (500 µA versus 100 µA at 200V), which increases standby power consumption. The operating temperature range is extended to -65°C minimum. Selection requires confirmation that the higher reverse leakage current does not exceed application design margins.

Q: Are all three parts suitable for automotive applications?

A: The SR520H carries AEC-Q101 qualification for automotive use. The SR520 A0G is also manufactured by Taiwan Semiconductor Corporation with identical specifications and automotive-grade status. The SR5200-TP is manufactured by Micro Commercial Co; automotive qualification status is not specified in the provided parameters. Automotive application requirements must be verified against the specific qualification documentation for SR5200-TP.

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

A: Tape & Reel (TR) packaging supplies components on continuous carrier tape wound on reels, suitable for high-volume automated assembly. Cut Tape (CT) packaging supplies components on cut segments of carrier tape, suitable for lower-volume or manual assembly processes. Both formats use the same DO-201AD component package and do not affect electrical performance.

Q: Can SR520H be substituted with either equivalent part in existing designs without circuit modification?

A: SR520 A0G is a direct parametric equivalent and requires no circuit modification. SR5200-TP maintains electrical compatibility within the core parameters (voltage, current, package) but exhibits different forward voltage drop and reverse leakage characteristics. Circuit modification is not required, but design margin verification is necessary to confirm that the parameter variations do not compromise system performance or reliability.

Q: What compliance certifications apply to all three parts?

A: All three parts are ROHS3 compliant, REACH unaffected, and classified under ECCN EAR99. All maintain MSL 1 (unlimited moisture sensitivity). The SR520H and SR520 A0G carry AEC-Q101 automotive qualification; AEC-Q101 status for SR5200-TP is not provided in the available parameters.