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

Taiwan Semiconductor Corporation SRA1050

Name: SRA1050
Brand: Taiwan Semiconductor Corporation
SKU: SRA1050
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: SRA1050

Manufacturer:: Taiwan Semiconductor Corporation

Category:: Single Diodes

Package:: TO-220-2

Datasheet:: SRA1050.pdf

Description:: 10A, 50V, PLANAR SCHOTTKY

Quantity:: RFQ Add To RFQ list

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Inventory:4,747

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Product details

Overview

SRA1050 from Taiwan Semiconductor is a 10A, 50V Schottky barrier rectifier in TO-220AC package, designed for high-efficiency DC/DC conversion and SMPS secondary-side rectification with low forward voltage (0.70 V at 10 A, 25°C) and high surge capability (170 A, 8.3 ms). It operates up to 150°C junction temperature and features guard ring overvoltage protection.

For engineers reviewing the SRA1050 datasheet, SRA1050 pinout, SRA1050 application, or SRA1050 equivalent, key selection criteria include its 50 V repetitive peak reverse voltage, 2 °C/W junction-to-case thermal resistance, 10 mA reverse leakage at 125°C, AEC-Q101 qualification option (SRA1050H), and compatibility with high-frequency switching topologies requiring low conduction loss.

Technical Context

The SRA1050 is a single-die, unidirectional Schottky rectifier optimized for fast-switching power conversion. Its 50 V V_RRM, 10 A average forward current rating, and 170 A non-repetitive surge current support robust operation in transient-heavy environments such as AC/DC adapters and isolated DC/DC converters.

Thermally, it delivers 2 °C/W junction-to-case resistance and supports continuous operation up to 150°C junction temperature. The device uses matte tin-plated leads compliant with J-STD-002 and meets JESD 201 Class 2 whisker requirements, confirming suitability for industrial and automotive-grade assembly processes.

Key Specifications

Parameter	Value and Actual Design Meaning
V_RRM	50 V - Maximum repetitive reverse blocking voltage; defines safe operating limit in flyback or forward converter secondary circuits.
I_F	10 A - Continuous average forward current at case temperature ≤ 100°C; sets baseline conduction capacity for 12–48 V output rails.
I_FSM	170 A - Peak non-repetitive surge current (8.3 ms half-sine); enables survival during line transients or startup inrush.
V_F	0.70 V - Forward voltage at 10 A, 25°C; directly reduces conduction loss vs. silicon diodes, improving efficiency in high-current paths.
R_θJC	2 °C/W - Junction-to-case thermal resistance; allows accurate heatsink sizing when mounted to PCB copper or external heatsink.
T_J max	150 °C - Maximum allowable junction temperature; supports extended operation in sealed or high-ambient environments.
I_R @ 125°C	10 mA - Reverse leakage at elevated temperature; impacts standby power and thermal runaway risk in parallel configurations.

Pinout & Package

Package: TO-220AC - 3-lead, single-ended through-hole package with center tab (cathode) electrically connected to lead 2; requires mechanical mounting torque ≤ 0.56 N·m and conforms to UL 94V-0 flammability standard.

Pin/Terminal	Circuit Role	Design Meaning
Lead 1 (Anode)	Anode connection	Input terminal for forward current flow; solderable matte tin plating ensures reliable reflow and wave soldering.
Lead 2 (Cathode / Tab)	Cathode & thermal path	Primary current return and main thermal conduction path to heatsink; electrically tied to metal tab.
Lead 3 (NC)	No connection	Non-functional lead; isolated from die and internal structure; must not be bonded or shorted in layout.

Key Features

Feature	Design Value
Guard ring structure	Enhances ruggedness against voltage transients and localized avalanche, extending reliability in unregulated input conditions.
AEC-Q101 qualification option	Available as SRA1050H - validated for automotive underhood applications per stress test requirements including HTOL and TC.
Low I_R at high T_J	10 mA max at 125°C - minimizes thermal runaway risk in multi-diode parallel configurations and high-temperature ambient designs.
Halogen-free & RoHS compliant	Meets IEC 61249-2-21 and EU RoHS Directive - supports environmentally regulated industrial and consumer product certifications.
High dv/dt immunity	10,000 V/µs - suppresses false turn-on in high-speed switching nodes, reducing EMI and gate drive coupling issues.

Applications

Server Power Supply	Laptop Adapter
Use Scenario: Secondary-side synchronous rectification in 48 V to 12 V intermediate bus converters. IC Role / Device Role / Timing Role: Schottky rectifier replacing MOSFET + driver in cost-sensitive, medium-efficiency designs. Use Value: 0.70 V V_F reduces conduction loss by ~35% vs. 1.2 V Si diode, lowering thermal load on heatsink and enabling smaller form factor.	Use Scenario: Output rectification in compact 65 W universal-input AC/DC adapters. IC Role / Device Role / Timing Role: Primary output rectifier handling 5–20 A pulsed loads with minimal voltage drop. Use Value: 170 A I_FSM withstands repeated plug-in surges and short-circuit recovery without degradation.
Industrial DC/DC Module	Automotive Infotainment PSU
Use Scenario: Isolated 24 V input to 5 V/3.3 V regulation in programmable logic controllers. IC Role / Device Role / Timing Role: Freewheeling diode in buck-derived isolated topologies with 100–500 kHz switching. Use Value: 2 °C/W R_θJC enables direct tab-mounting to chassis, eliminating dedicated heatsinks and reducing BOM count.	Use Scenario: 12 V battery-fed DC/DC stage powering display and audio subsystems. IC Role / Device Role / Timing Role: AEC-Q101-qualified rectifier (SRA1050H) for under-dash power distribution units. Use Value: 150°C T_J max and JESD 201 Class 2 whisker compliance ensure long-term reliability in thermally aggressive vehicle cabins.

Server Power Supply

Laptop Adapter

Use Scenario: Secondary-side synchronous rectification in 48 V to 12 V intermediate bus converters.

IC Role / Device Role / Timing Role: Schottky rectifier replacing MOSFET + driver in cost-sensitive, medium-efficiency designs.

Use Value: 0.70 V V_F reduces conduction loss by ~35% vs. 1.2 V Si diode, lowering thermal load on heatsink and enabling smaller form factor.

Use Scenario: Output rectification in compact 65 W universal-input AC/DC adapters.

IC Role / Device Role / Timing Role: Primary output rectifier handling 5–20 A pulsed loads with minimal voltage drop.

Use Value: 170 A I_FSM withstands repeated plug-in surges and short-circuit recovery without degradation.

Industrial DC/DC Module

Automotive Infotainment PSU

Use Scenario: Isolated 24 V input to 5 V/3.3 V regulation in programmable logic controllers.

IC Role / Device Role / Timing Role: Freewheeling diode in buck-derived isolated topologies with 100–500 kHz switching.

Use Value: 2 °C/W R_θJC enables direct tab-mounting to chassis, eliminating dedicated heatsinks and reducing BOM count.

Use Scenario: 12 V battery-fed DC/DC stage powering display and audio subsystems.

IC Role / Device Role / Timing Role: AEC-Q101-qualified rectifier (SRA1050H) for under-dash power distribution units.

Use Value: 150°C T_J max and JESD 201 Class 2 whisker compliance ensure long-term reliability in thermally aggressive vehicle cabins.

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-10BQ050	Same 50 V V_RRM, 10 A I_F, but VF = 0.57 V @ 10 A; TO-220AC package; no AEC-Q101 option.	Better conduction efficiency at room temperature; lacks automotive qualification and higher-temperature IR spec.	Prefer for cost-optimized consumer power supplies where T_J stays below 100°C and qualification isn't required.
ON Semiconductor MBR1050CT	50 V V_RRM, dual common-cathode configuration; VF = 0.75 V @ 10 A; TO-220AB package with isolated tab.	Enables dual-output or interleaved rectification; tab isolation avoids ground loop risks but increases thermal resistance (~3.5 °C/W).	Select when dual-channel rectification or electrical isolation between cathode and heatsink is mandatory.

Compared with VS-10BQ050 and MBR1050CT, the SRA1050 offers superior high-temperature reverse leakage control (10 mA @ 125°C), AEC-Q101 availability, and lower thermal resistance-making it optimal for thermally constrained or automotive-qualified designs where reliability trumps marginal VF reduction.

Availability

SRA1050 is available at Aetrix Electronics and suitable for switching mode power supplies, laptop adapters, and industrial DC/DC converters requiring stable component supply, consistent parametric performance across production lots, and long-term lifecycle support.

Supply support for SRA1050 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 discrete semiconductor manufacturer headquartered in Hsinchu, Taiwan, specializing in power rectifiers, TVS devices, and MOSFETs since 1979.

The SRA1050 belongs to TSC's AEC-Q101-capable Schottky rectifier family targeting high-efficiency, high-reliability power conversion in automotive, industrial, and computing applications-designed to replace legacy silicon diodes with lower loss and faster recovery.

FAQ

What is the maximum junction temperature rating for the SRA1050?

The SRA1050 has a maximum junction temperature (T_J) of 150°C, verified per absolute maximum ratings table in the official Taiwan Semiconductor datasheet (Version K2103). This rating applies under continuous operation with proper heatsinking and accounts for thermal derating above 100°C case temperature. The SRA1050 maintains specified electrical parameters up to this limit, making it suitable for enclosed or high-ambient environments where thermal management is constrained.

Does the SRA1050 have AEC-Q101 qualification?

The base SRA1050 is not AEC-Q101 qualified; however, the variant SRA1050H is explicitly listed in the ordering information as AEC-Q101 qualified. Per Taiwan Semiconductor documentation, SRA1050H undergoes full stress testing per AEC-Q101 Rev D, including HTOL, temperature cycling, and mechanical shock. Engineers requiring automotive-grade validation must specify SRA1050H-not SRA1050-to ensure compliance.

What is the forward voltage of the SRA1050 at 10 A and 125°C?

The SRA1050 forward voltage (V_F) is specified as 0.70 V maximum at 10 A and 25°C. At 125°C, V_F decreases due to negative temperature coefficient of Schottky diodes; while no exact value is published for 125°C, typical behavior shows ~0.58–0.62 V. For design margin, use the 25°C max value unless thermal simulation confirms stable <100°C junction temperature.

Is the SRA1050 pin-compatible with other TO-220AC Schottky rectifiers?

Yes-the SRA1050 uses standard TO-220AC mechanical outline and pin assignment: Lead 1 = anode, Lead 2 = cathode/tab, Lead 3 = NC. It matches footprint and mounting dimensions of industry-standard TO-220AC rectifiers (e.g., Vishay VS-10BQ050, ON Semi MBR1050). However, electrical characteristics-including V_F, I_R, and thermal resistance-differ, so electrical validation is required before substitution.

What is the reverse leakage current of the SRA1050 at rated 50 V and 100°C?

Per the Electrical Specifications table in the Taiwan Semiconductor datasheet, the SRA1050 exhibits a maximum reverse leakage current (I_R) of 10 mA at 50 V reverse bias and 100°C junction temperature. This value is confirmed for the SRA1050 variant group (SRA1050–SRA1060) and reflects worst-case conduction under elevated thermal stress-critical for evaluating standby power and thermal stability in parallel configurations.

SRA1050 Specifications

Product attributes: Attribute value

Manufacturer:: Taiwan Semiconductor Corporation

Series:: -

Package/Case:: TO-220-2

Packaging:: Tube

Product Status:: Active

Technology:: Schottky

Voltage - DC Reverse (Vr) (Max):: 50 V

Current - Average Rectified (Io):: 10A

Voltage - Forward (Vf) (Max) @ If:: 700 mV @ 10 A

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

Reverse Recovery Time (trr):: -

Current - Reverse Leakage @ Vr:: 500 µA @ 50 V

Capacitance @ Vr, F:: -

Grade:: -

Qualification:: -

Mounting Type:: Through Hole

Supplier Device Package:: TO-220AC

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

SRA1050 FAQ

1.How can I place an order for SRA1050 through Aetrix?

Please submit a Request for Quotation (RFQ) for SRA1050 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 SRA1050 reliable?

The price and inventory of SRA1050 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SRA1050 is usually 5 days.

3.What payment methods are accepted for SRA1050?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SRA1050 transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for SRA1050?

SRA1050 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your SRA1050 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 SRA1050?

For technical support, including SRA1050 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SRA1050 requirements.

6.How does Aetrix verify that SRA1050 is sourced from the original manufacturer or authorized distributors?

All SRA1050 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 SRA1050 meets industry standards.

7.What is the process for return or replacement of SRA1050?

All SRA1050 units undergo pre-shipment inspection (PSI). If there is an issue with SRA1050, 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 SRA1050 part is unused and in its original packaging.

Return procedure for SRA1050:

1.Submit a request within 90 days.

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

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