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

Taiwan Semiconductor Corporation SRA1090

Name: SRA1090
Brand: Taiwan Semiconductor Corporation
SKU: SRA1090
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: SRA1090

Manufacturer:: Taiwan Semiconductor Corporation

Category:: Single Diodes

Package:: TO-220-2

Datasheet:: SRA1090.pdf

Description:: 10A, 90V, PLANAR SCHOTTKY

Quantity:: RFQ Add To RFQ list

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Inventory:6,406

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Product details

Overview

SRA1090 from Taiwan Semiconductor is a 10A, 90V repetitive peak reverse voltage Schottky barrier rectifier in TO-220AC package, featuring 0.85V forward voltage at 10A and 25°C, 170A surge capability, and AEC-Q101 qualification option (SRA1090H). It serves as a high-efficiency output rectifier in automotive-grade DC-DC converters.

For engineers reviewing the SRA1090 datasheet, SRA1090 pinout, SRA1090 application, or SRA1090 equivalent, key selection criteria include its 90V V_RRM, 5mA reverse leakage at 125°C, 2°C/W junction-to-case thermal resistance, and compatibility with high-frequency switching topologies requiring low conduction loss.

Technical Context

The SRA1090 operates as a single-die Schottky rectifier with guard ring structure for overvoltage protection and meets JESD201 Class 2 whisker resistance. Its 10,000 V/µs dv/dt rating supports fast-switching environments without spurious turn-on.

Thermally, it delivers 2°C/W R_θJC into a heatsink via the TO-220AC case tab, enabling stable 10A continuous operation up to 125°C junction temperature - or 150°C for derated conditions per datasheet limits.

Key Specifications

Parameter	Value and Actual Design Meaning
V_RRM	90 V - Maximum non-repetitive reverse blocking voltage before breakdown
I_F	10 A - Continuous average forward current at case temperature ≤ 100°C
V_F	0.85 V @ 10A, 25°C - Directly determines conduction loss in power stage (P_cond ≈ 8.5W)
I_FSM	170 A - Peak non-repetitive surge current for 8.3ms half-sine, critical for input fault handling
R_θJC	2 °C/W - Enables thermal design with ≤20°C temperature rise across heatsink interface at 10A
I_R	100 µA @ 90V, 25°C; 5 mA @ 90V, 125°C - Defines leakage-related standby loss and high-temp reliability margin

Pinout & Package

Package: TO-220AC - Three-terminal through-hole package with insulated backside, matte tin-plated leads, UL 94V-0 molding compound, and polarity marking on device body.

Pin/Terminal	Circuit Role	Design Meaning
Anode (Lead 1)	Input terminal for forward conduction path	Connected to high-side switch node or transformer secondary in flyback/forward topologies
Cathode (Lead 2)	Output terminal for forward conduction path	Connected to output capacitor and load; carries full output current with minimal drop
Case / Tab (Lead 3)	Electrically connected to cathode	Provides mechanical mounting surface and primary thermal path to heatsink; must be electrically isolated if cathode is not ground-referenced

Key Features

Feature	Design Value
AEC-Q101 qualified variant available (SRA1090H)	Validated for automotive under-hood applications including engine control and ADAS power supplies
Guard ring structure	Prevents edge breakdown under transient overvoltage, improving robustness in unregulated input rails
10,000 V/µs critical dv/dt rating	Ensures stable blocking during fast voltage transients common in synchronous rectification circuits
JESD201 Class 2 whisker resistance	Guarantees long-term solder joint integrity in high-vibration environments like automotive chassis mounting

Applications

Automotive DC-DC Converter	Industrial SMPS Output Stage
Use Scenario: 12V-to-5V/3.3V buck-derived converter in vehicle infotainment head unit with 40kHz–200kHz switching frequency. IC Role / Device Role / Timing Role: Primary output rectifier replacing fast recovery diode to reduce conduction loss and improve efficiency by ≥3%. Use Value: 0.85V V_F lowers power dissipation vs. silicon diodes, reducing heatsink size and enabling convection-only cooling.	Use Scenario: 48V-to-12V industrial telecom power module operating continuously at 60°C ambient. IC Role / Device Role / Timing Role: High-current freewheeling diode in synchronous rectified forward converter. Use Value: 170A I_FSM withstands line surges; 2°C/W R_θJC allows direct mounting to aluminum chassis for passive thermal management.
USB-C PD Adapter Secondary Side	Server VRM Auxiliary Rail
Use Scenario: 20V output stage in compact 65W USB-C power adapter with tight thermal envelope. IC Role / Device Role / Timing Role: Secondary-side Schottky rectifier in quasi-resonant flyback topology. Use Value: Low 0.85V V_F minimizes conduction loss at high duty cycles, supporting >93% efficiency at full load.	Use Scenario: 3.3V auxiliary rail in 1U server PSU where space and thermal density are constrained. IC Role / Device Role / Timing Role: Output rectifier in isolated forward converter feeding FPGA or ASIC core logic supply. Use Value: TO-220AC package enables manual rework and high-current PCB trace routing; 100µA I_R at 25°C ensures low standby loss.

Automotive DC-DC Converter

Industrial SMPS Output Stage

Use Scenario: 12V-to-5V/3.3V buck-derived converter in vehicle infotainment head unit with 40kHz–200kHz switching frequency.

IC Role / Device Role / Timing Role: Primary output rectifier replacing fast recovery diode to reduce conduction loss and improve efficiency by ≥3%.

Use Value: 0.85V V_F lowers power dissipation vs. silicon diodes, reducing heatsink size and enabling convection-only cooling.

Use Scenario: 48V-to-12V industrial telecom power module operating continuously at 60°C ambient.

IC Role / Device Role / Timing Role: High-current freewheeling diode in synchronous rectified forward converter.

Use Value: 170A I_FSM withstands line surges; 2°C/W R_θJC allows direct mounting to aluminum chassis for passive thermal management.

USB-C PD Adapter Secondary Side

Server VRM Auxiliary Rail

Use Scenario: 20V output stage in compact 65W USB-C power adapter with tight thermal envelope.

IC Role / Device Role / Timing Role: Secondary-side Schottky rectifier in quasi-resonant flyback topology.

Use Value: Low 0.85V V_F minimizes conduction loss at high duty cycles, supporting >93% efficiency at full load.

Use Scenario: 3.3V auxiliary rail in 1U server PSU where space and thermal density are constrained.

IC Role / Device Role / Timing Role: Output rectifier in isolated forward converter feeding FPGA or ASIC core logic supply.

Use Value: TO-220AC package enables manual rework and high-current PCB trace routing; 100µA I_R at 25°C ensures low standby loss.

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-10BQ090-M3/45	Same 90V V_RRM, 10A I_F, but VF = 0.72V @ 10A/25°C; TO-220AC package; no AEC-Q101 option	Lower forward drop improves light-load efficiency but lacks automotive qualification	Select when prioritizing lowest conduction loss over automotive compliance
ON Semiconductor MBR1090CT	Dual common-cathode configuration (2×10A), VF = 0.82V @ 10A/25°C; TO-220AB package; no AEC-Q101 option	Enables dual-rail outputs or interleaved designs but requires different footprint and layout	Select only if dual-diode functionality or alternate thermal mounting is required

Compared with VS-10BQ090-M3/45 and MBR1090CT, the SRA1090 offers AEC-Q101 qualification and tighter thermal resistance (2°C/W vs. typical 2.5°C/W), making it preferred for automotive and thermally constrained industrial designs where reliability and heatsink interface efficiency are critical.

Availability

SRA1090 is available at Aetrix Electronics and suitable for automotive DC-DC converters, industrial SMPS output stages, and USB-C PD adapter secondary-side rectification requiring stable component supply and long-lifecycle support.

Supply support for SRA1090 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 devices and protection components.

The SRA1090 belongs to TSC's AEC-Q101-qualified Schottky rectifier product line, engineered for high-efficiency, high-reliability power conversion in automotive and industrial environments where thermal stability and surge robustness are essential.

FAQ

What is the maximum junction temperature rating for the SRA1090?

The SRA1090 has a maximum junction temperature (T_J) of 125°C for standard operation and up to 150°C under derated conditions per the absolute maximum ratings table. This dual-rating allows flexible thermal design depending on system airflow and heatsink capability while maintaining reliability.

Does the SRA1090 have AEC-Q101 qualification?

Yes - the SRA1090H variant is explicitly AEC-Q101 qualified, as confirmed in the ordering information and features list. The base SRA1090 part is not automatically qualified; AEC-Q101 compliance requires ordering the "H" suffix version.

What is the forward voltage of the SRA1090 at 10A and 100°C junction temperature?

The datasheet specifies V_F only at 25°C (0.85V max) and does not provide a guaranteed value at 100°C. However, typical curves show V_F decreases with rising temperature; extrapolation from Fig.4 indicates ~0.72–0.75V at 100°C and 10A, though design margins should rely on the 25°C spec.

Is the SRA1090 pin-compatible with other TO-220AC Schottky rectifiers?

Yes - the SRA1090 uses standard TO-220AC pinout (Anode–Cathode–Cathode-tab), matching industry-standard footprints. Mechanical compatibility is confirmed by identical package outline dimensions and lead pitch in the datasheet's Package Outline Dimensions section.

What is the reverse leakage current of the SRA1090 at rated voltage and elevated temperature?

At 90V reverse voltage and 125°C junction temperature, the SRA1090 exhibits a maximum reverse leakage current (I_R) of 5 mA, as specified in the Electrical Specifications table. At 25°C and 90V, leakage is limited to 100 µA, supporting low-power standby modes.

SRA1090 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):: 90 V

Current - Average Rectified (Io):: 10A

Voltage - Forward (Vf) (Max) @ If:: 850 mV @ 10 A

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

Reverse Recovery Time (trr):: -

Current - Reverse Leakage @ Vr:: 100 µA @ 90 V

Capacitance @ Vr, F:: -

Grade:: -

Qualification:: -

Mounting Type:: Through Hole

Supplier Device Package:: TO-220AC

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

SRA1090 FAQ

1.How can I place an order for SRA1090 through Aetrix?

Please submit a Request for Quotation (RFQ) for SRA1090 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 SRA1090 reliable?

The price and inventory of SRA1090 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SRA1090 is usually 5 days.

3.What payment methods are accepted for SRA1090?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SRA1090 transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for SRA1090?

SRA1090 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your SRA1090 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 SRA1090?

For technical support, including SRA1090 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SRA1090 requirements.

6.How does Aetrix verify that SRA1090 is sourced from the original manufacturer or authorized distributors?

All SRA1090 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 SRA1090 meets industry standards.

7.What is the process for return or replacement of SRA1090?

All SRA1090 units undergo pre-shipment inspection (PSI). If there is an issue with SRA1090, 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 SRA1090 part is unused and in its original packaging.

Return procedure for SRA1090:

1.Submit a request within 90 days.

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

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