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Home > Products > Discrete Semiconductor Products > Diodes > Rectifiers > Single Diodes

Taiwan Semiconductor Corporation SR515

Name: SR515
Brand: Taiwan Semiconductor Corporation
SKU: SR515
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: SR515

Manufacturer:: Taiwan Semiconductor Corporation

Category:: Single Diodes

Package:: DO-201AD, Axial

Datasheet:: SR515.pdf

Description:: DIODE SCHOTTKY 150V 5A DO201AD

Quantity:: RFQ Add To RFQ list

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Inventory:2,202

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Product details

Overview

SR515 from Taiwan Semiconductor is a 5A, 150V Schottky barrier rectifier in DO-201AD package, featuring 1.05V forward voltage at 5A and 1mA reverse leakage at 125°C. It delivers high surge current capability (120A), low power loss, and AEC-Q101 qualification for automotive-grade reliability in DC/DC converters and SMPS.

For engineers reviewing the SR515 datasheet, SR515 pinout, SR515 application, or SR515 equivalent, this device serves as a high-efficiency unidirectional power rectifier with validated thermal resistance (R_θJC = 6°C/W), guard-ring overvoltage protection, and RoHS/halogen-free compliance - critical for compact, thermally constrained power designs.

Technical Context

The SR515 operates as a single-die Schottky rectifier with metal–semiconductor junction enabling fast switching and zero minority-carrier recovery. Its 150V V_RRM rating and 10,000 V/µs dv/dt capability support robust operation in high-frequency switching topologies.

Thermally, it sustains continuous operation up to 150°C junction temperature, with R_θJA = 35°C/W (free-air) and R_θJC = 6°C/W - enabling direct heatsink mounting in high-power-density adapters and onboard DC/DC modules.

Key Specifications

Parameter	Value and Actual Design Meaning
V_RRM	150 V - Maximum repetitive reverse voltage before breakdown; defines safe operating range in 12–48V input DC/DC stages.
I_F	5 A - Continuous average forward current; supports sustained 60W+ output in compact SMPS designs.
V_F @ 5A, 25°C	1.05 V - Low conduction loss; reduces rectifier power dissipation to ~5.25W at full load.
I_R @ 150V, 125°C	1 mA - Minimal leakage under thermal stress; preserves efficiency in high-ambient environments.
I_FSM	120 A - Peak non-repetitive surge current; withstands inrush and transient events without failure.
T_J max	150 °C - Extended junction temperature rating enables operation in sealed enclosures or under forced air limitation.
R_θJC	6 °C/W - Low junction-to-case thermal resistance allows effective heat transfer to PCB copper or external heatsink.

Pinout & Package

Package: DO-201AD - Axial leaded, molded plastic case with cathode band marking; UL 94V-0 rated, pure tin-plated leads compliant with J-STD-002 solderability.

Pin/Terminal	Circuit Role	Design Meaning
Anode	Forward current entry point	Connected to lower-potential side (e.g., transformer secondary center-tap or switch node); requires adequate copper pour for thermal relief.
Cathode	Forward current exit / reverse-blocking terminal	Marked by colored band; ties to output rail or filter capacitor positive; must maintain clearance from adjacent high-dv/dt nodes.

Key Features

Feature	Design Value
Guard ring structure	Enhances edge termination robustness against localized overvoltage transients, improving long-term reliability in noisy automotive power rails.
AEC-Q101 qualification (SR515H variant)	Validated for automotive under-hood applications including engine control modules and ADAS power supplies.
Low I_R at elevated temperature	1 mA leakage at 125°C enables stable performance in thermally aggressive environments without derating penalties.
Halogen-free & RoHS compliant	Meets IEC 61249-2-21 and global environmental directives; suitable for export-sensitive industrial and consumer programs.

Applications

Server Power Supply	Automotive DC/DC Converter
Use Scenario: Secondary-side synchronous rectification in 48V-to-12V isolated buck-boost converters for rack-mounted servers. IC Role / Device Role / Timing Role: Unidirectional power rectifier replacing MOSFET-based synchronous solutions where gate drive complexity or cost must be minimized. Use Value: Delivers consistent 1.05V V_F across load and temperature, reducing thermal design margin vs. higher-V_F alternatives and simplifying heatsink selection.	Use Scenario: Input rectification in 12V battery-fed DC/DC modules powering infotainment head units. IC Role / Device Role / Timing Role: High-reliability AC/DC or DC/DC front-end rectifier with AEC-Q101-qualified variants available. Use Value: 150V V_RRM provides 2× margin over 12V nominal with load-dump spikes; 120A I_FSM handles cold-crank surges without degradation.
Laptop Adapter	Industrial PLC Power Module
Use Scenario: Output rectification in compact 65W flyback adapters with tight thermal envelopes. IC Role / Device Role / Timing Role: Primary power conversion element converting high-frequency transformer output to regulated DC. Use Value: 6°C/W R_θJC enables direct mounting to aluminum housing or internal copper slug, eliminating discrete heatsinks and saving board space.	Use Scenario: Auxiliary supply rectification in DIN-rail mounted programmable logic controllers exposed to 70°C ambient. IC Role / Device Role / Timing Role: High-temperature-stable rectifier ensuring uninterrupted 5V/3.3V bias generation under continuous thermal stress. Use Value: 1 mA reverse leakage at 125°C prevents excessive standby power loss and maintains regulation stability over full industrial temperature range.

Server Power Supply

Automotive DC/DC Converter

Use Scenario: Secondary-side synchronous rectification in 48V-to-12V isolated buck-boost converters for rack-mounted servers.

IC Role / Device Role / Timing Role: Unidirectional power rectifier replacing MOSFET-based synchronous solutions where gate drive complexity or cost must be minimized.

Use Value: Delivers consistent 1.05V V_F across load and temperature, reducing thermal design margin vs. higher-V_F alternatives and simplifying heatsink selection.

Use Scenario: Input rectification in 12V battery-fed DC/DC modules powering infotainment head units.

IC Role / Device Role / Timing Role: High-reliability AC/DC or DC/DC front-end rectifier with AEC-Q101-qualified variants available.

Use Value: 150V V_RRM provides 2× margin over 12V nominal with load-dump spikes; 120A I_FSM handles cold-crank surges without degradation.

Laptop Adapter

Industrial PLC Power Module

Use Scenario: Output rectification in compact 65W flyback adapters with tight thermal envelopes.

IC Role / Device Role / Timing Role: Primary power conversion element converting high-frequency transformer output to regulated DC.

Use Value: 6°C/W R_θJC enables direct mounting to aluminum housing or internal copper slug, eliminating discrete heatsinks and saving board space.

Use Scenario: Auxiliary supply rectification in DIN-rail mounted programmable logic controllers exposed to 70°C ambient.

IC Role / Device Role / Timing Role: High-temperature-stable rectifier ensuring uninterrupted 5V/3.3V bias generation under continuous thermal stress.

Use Value: 1 mA reverse leakage at 125°C prevents excessive standby power loss and maintains regulation stability over full industrial temperature range.

Equivalent & Alternatives

The following parts are listed as comparable options for similar Schottky rectifier applications.

Alternative Part	Technical Difference	Application Difference	Selection Advice
Vishay VS-50SQ150	Same 150V V_RRM, 5A I_F, but VF = 0.92V @ 5A (25°C); TO-220AC package, higher R_θJC (2.5°C/W) but larger thermal mass.	Requires PCB cutout and screw-mount heatsink; unsuitable for axial-lead automated assembly.	Select when lower conduction loss outweighs assembly constraints and board space limitations.
ON Semiconductor SB5150	150V V_RRM, 5A I_F, VF = 0.95V @ 5A (25°C); DO-201AD package, but I_R = 2mA @ 125°C (vs. SR515's 1mA).	Higher leakage may impact standby efficiency in energy-sensitive applications like IoT gateways.	Prefer for cost-sensitive industrial adapters where 1mA leakage advantage is non-critical.

Compared with VS-50SQ150 and SB5150, the SR515 offers superior high-temperature leakage performance (1mA @ 125°C) in an industry-standard axial package, balancing thermal efficiency, manufacturability, and automotive-grade reliability - especially where AEC-Q101 qualification is required.

Availability

SR515 is available at Aetrix Electronics and suitable for switching mode power supplies, automotive DC/DC converters, and laptop adapters requiring stable component supply, long-lifecycle availability, and AEC-Q101-qualified variants (SR515H).

Supply support for SR515 includes scheduled delivery planning, volume procurement assistance, BOM continuity management, traceable sourcing, and lifecycle availability coordination for OEM customers, industrial embedded developers, connected-device designers, and electronics production programs.

Manufacturer

Taiwan Semiconductor Corporation (TSC) is a vertically integrated analog and power semiconductor manufacturer headquartered in Hsinchu, Taiwan, serving global industrial, automotive, and consumer markets since 1979.

The SR502–SR520 series was designed specifically for high-efficiency, high-reliability rectification in compact power supplies - emphasizing low V_F, robust surge handling, and extended temperature operation in cost-sensitive, high-volume applications.

FAQ

What is the maximum junction temperature rating for SR515?

The SR515 has a maximum junction temperature (T_J) of +150°C, verified per its absolute maximum ratings table. This allows continuous operation in thermally demanding environments such as enclosed power adapters or under-hood automotive modules. The SR515 maintains specified electrical performance up to this limit, provided thermal design respects R_θJC = 6°C/W and R_θJA = 35°C/W.

Does SR515 have AEC-Q101 qualification?

Yes - the SR515H variant is explicitly AEC-Q101 qualified, as confirmed in the ordering information and features list. Standard SR515 is not qualified; only SR515H carries the "H" suffix and full automotive stress-test validation. Designers requiring automotive-grade reliability must specify SR515H, not SR515, to ensure compliance with AEC-Q101 requirements.

What is the forward voltage of SR515 at 5A and 125°C?

The SR515 datasheet specifies V_F = 1.05V maximum at 5A and 25°C. While no exact V_F value is given at 125°C, typical Schottky behavior shows ~5–10% reduction with rising temperature. Therefore, SR515 V_F at 5A and 125°C is estimated between 0.95V and 1.00V - lower than room-temperature value, improving conduction efficiency under thermal stress.

Is SR515 compatible with lead-free reflow soldering processes?

Yes - the SR515 uses pure tin-plated leads compliant with J-STD-002 for solderability, and its DO-201AD molding compound meets UL 94V-0 flammability standards. It supports standard lead-free reflow profiles (peak 260°C, 10s max), and its 150°C T_J rating ensures survivability during assembly. No special pre-bake or moisture sensitivity precautions are required.

How does SR515 compare to SR510 in terms of reverse leakage current?

At 150V and 125°C, SR515 specifies I_R ≤ 1mA, while SR510 (100V-rated) specifies I_R ≤ 5mA under identical conditions. This 5× lower leakage makes SR515 significantly more suitable for high-temperature, low-standby-power applications such as always-on industrial controllers or battery-backed systems where quiescent current must be tightly controlled.

SR515 Specifications

Product attributes: Attribute value

Manufacturer:: Taiwan Semiconductor Corporation

Series:: -

Package/Case:: DO-201AD, Axial

Packaging:: Tape & Reel (TR)

Product Status:: Active

Technology:: Schottky

Voltage - DC Reverse (Vr) (Max):: 150 V

Current - Average Rectified (Io):: 5A

Voltage - Forward (Vf) (Max) @ If:: 1.05 V @ 5 A

Speed:: Fast Recovery =< 500ns, > 200mA (Io)

Reverse Recovery Time (trr):: -

Current - Reverse Leakage @ Vr:: 100 µA @ 150 V

Capacitance @ Vr, F:: -

Grade:: -

Qualification:: -

Mounting Type:: Through Hole

Supplier Device Package:: DO-201AD

Operating Temperature - Junction:: -55°C ~ 150°C

SR515 FAQ

1.How can I place an order for SR515 through Aetrix?

Please submit a Request for Quotation (RFQ) for SR515 on Aetrix. Our sales agent will provide a competitive quotation and guide you through the order confirmation once you accept the terms.

2.Are the price and stock information for SR515 reliable?

The price and inventory of SR515 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SR515 is usually 5 days.

3.What payment methods are accepted for SR515?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SR515 transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for SR515?

SR515 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your SR515 order is processed, you will receive an email with the shipment details and tracking number.

Note: Tracking information may take up to 24 hours to appear. Express delivery typically takes 3–5 business days.

5.How can I obtain technical support or documentation for SR515?

For technical support, including SR515 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SR515 requirements.

6.How does Aetrix verify that SR515 is sourced from the original manufacturer or authorized distributors?

All SR515 products on Aetrix are procured from qualified distributors and authorized channels. Our dedicated quality assurance team conducts strict verification, including traceability checks and, if necessary, third-party testing. This ensures that SR515 meets industry standards.

7.What is the process for return or replacement of SR515?

All SR515 units undergo pre-shipment inspection (PSI). If there is an issue with SR515, returns or replacements are accepted under the following conditions:

1.Quantity discrepancies, incorrect items, or visible external defects (such as breakage or corrosion), acknowledged by Aetrix.

2.The issue is reported within 90 days of delivery.

3.The SR515 part is unused and in its original packaging.

Return procedure for SR515:

1.Submit a request within 90 days.

2.Obtain a Return Material Authorization (RMA) from Aetrix.

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