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Taiwan Semiconductor Corporation SR2090
- Part No.:
- SR2090
- Manufacturer:
- Taiwan Semiconductor Corporation
- Category:
- Diode Arrays
- Package:
- TO-220-3
- Datasheet:
-
SR2090.pdf
- Description:
- DIODE ARR SCHOTT 90V 20A TO220AB
- Quantity:
- Payment:
- Shipping:
Inventory:5,820
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Product details
Overview
SR2090 from Taiwan Semiconductor is a 20A, 90V Schottky barrier rectifier in TO-220AB package with dual-die configuration, 0.90V typical forward voltage at 10A/25°C, 200A non-repetitive surge capability, and AEC-Q101 qualification available in H-variant. It serves as primary output rectifier in high-efficiency DC-DC converters.
For engineers reviewing the SR2090 datasheet, SR2090 pinout, SR2090 application, or SR2090 equivalent, key selection criteria include its 90V VRRM, 125°C/150°C junction temperature range, low VF trade-off versus leakage, TO-220AB thermal performance (RθJC = 1°C/W), and suitability for automotive-grade power conversion where reliability under thermal cycling is critical.
Technical Context
This Schottky rectifier uses dual-die parallel configuration to achieve 20A average forward current while maintaining low conduction loss. Its 90V VRRM rating targets mid-range SMPS outputs, and the 10,000 V/μs dv/dt rating supports fast-switching topologies without false triggering.
The device operates across –55°C to +150°C storage and –55°C to +125°C continuous junction temperature (derated above 125°C), with 100µA max reverse leakage at 25°C and 5mA at 125°C - reflecting optimized guard-ring design for overvoltage robustness and thermal stability.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VRRM | 90 V - Maximum repetitive reverse blocking voltage; defines usable output voltage headroom in buck or flyback secondary-side rectification |
| IF | 20 A - Continuous average forward current at case temperature ≤75°C; sets minimum heatsink requirement for 20A DC loads |
| IFSM | 200 A - Non-repetitive surge current (8.3ms half-sine); enables survival during startup inrush or short-circuit events |
| VF | 0.90 V typ @ 10A, 25°C - Low conduction loss improves efficiency in high-current, low-voltage rails (e.g., 12V–48V outputs) |
| RθJC | 1 °C/W - Junction-to-case thermal resistance; allows direct calculation of ΔTJ = Ploss × 1°C/W for thermal design |
| IR | 100 µA max @ 90V, 25°C - Reverse leakage directly impacts standby power and high-impedance sensing accuracy |
| TJ max | 125°C continuous / 150°C peak - Defines maximum allowable junction temperature before derating; critical for automotive under-hood placement |
Pinout & Package
TO-220AB package with 3-terminal configuration: Anode (pin 1), Cathode (pin 2), and metal tab (pin 3, electrically connected to cathode). Matte tin-plated leads meet J-STD-002 solderability; mounting torque ≤0.56 N·m.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Pin 1 (Lead) | Anode | Input terminal for forward conduction; connects to transformer secondary or switch node in synchronous rectification |
| Pin 2 (Lead) | Cathode | Output terminal; ties to common rail or output capacitor; electrically tied to metal tab |
| Metal Tab | Cathode (common) | Primary thermal path to heatsink; must be electrically isolated if cathode is not system ground |
Key Features
| Feature | Design Value |
|---|---|
| Guard ring structure | Enables 10,000 V/μs dv/dt immunity and prevents premature avalanche breakdown under transient overvoltage |
| Dual-die parallel configuration | Delivers 20A IF with lower thermal resistance per die and improved current sharing vs. single-die alternatives |
| AEC-Q101 qualification option (SR2090H) | Validated for automotive power modules requiring zero-defect reliability, extended temperature operation, and stress-test compliance |
| RoHS & halogen-free | Meets IEC 61249-2-21; eliminates brominated flame retardants and supports lead-free reflow assembly |
Applications
| Server Power Supply | Automotive DC-DC Converter |
|---|---|
Use Scenario: Primary 12V output rectification in 1U server PSUs operating at 200–500kHz switching frequency. IC Role / Device Role / Timing Role: Schottky rectifier replacing fast recovery diodes to reduce conduction loss and improve full-load efficiency by ≥1.2%. Use Value: 0.90V VF minimizes I²R loss at 20A, lowering heatsink size and enabling higher power density in constrained 1U chassis. | Use Scenario: 48V-to-12V bidirectional DC-DC stage in vehicle electrification systems (e.g., mild hybrid battery management). IC Role / Device Role / Timing Role: Unidirectional output rectifier handling continuous 20A load with transient surges up to 200A during regenerative braking events. Use Value: AEC-Q101-qualified variant (SR2090H) ensures validated reliability over 15-year automotive lifecycle under thermal cycling and vibration stress. |
| Industrial Motor Drive | Telecom Rectifier Module |
Use Scenario: Auxiliary power supply rectification for gate drivers and control logic in 3-phase inverters rated ≤10kW. IC Role / Device Role / Timing Role: High-surge-capable rectifier supplying isolated 15V/2A bias rails from auxiliary windings. Use Value: 200A IFSM withstands reflected transients from IGBT switching edges without degradation, improving long-term field reliability. | Use Scenario: Output rectification in -48V telecom rectifier bricks delivering 20A at 90% efficiency. IC Role / Device Role / Timing Role: Main output diode in phase-shifted full-bridge topology operating at 100–300kHz. Use Value: 1°C/W RθJC enables direct mounting to cold plate, reducing thermal interface layers and simplifying thermal validation for NEBS GR-63 compliance. |
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-20BQ090PbF | Same 90V VRRM, 20A IF, TO-220AC package; VF = 0.82V typ @ 10A but RθJC = 1.5°C/W | Lower VF improves light-load efficiency but higher thermal resistance requires larger heatsink area | Prefer when minimizing conduction loss dominates over thermal footprint constraints |
| ON Semiconductor SB2090 | 90V/20A Schottky in TO-220AB; VF = 0.95V typ @ 10A; no AEC-Q101 option; IR = 200µA @ 25°C | Higher leakage limits use in ultra-low-power standby circuits; lacks automotive qualification path | Acceptable for industrial-only designs where cost sensitivity outweighs automotive compliance needs |
Compared with SR2090, VS-20BQ090PbF offers lower forward drop but demands more thermal margin, while SB2090 trades off leakage and qualification for lower unit cost - making SR2090 optimal for thermally constrained, automotive-qualified 90V rectification where balanced VF/IR/thermal performance is required.
Availability
SR2090 is available at Aetrix Electronics and suitable for server power supplies, automotive DC-DC converters, and industrial motor drive auxiliary supplies requiring stable component supply with traceable sourcing and long-term lifecycle support.
Supply support for SR2090 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, TVS diodes, and rectifiers since 1979.
The SR20xx series was designed specifically for high-current, medium-voltage Schottky rectification in automotive and industrial power conversion, emphasizing thermal robustness, surge resilience, and qualification-ready variants.
FAQ
What is the maximum junction temperature rating for SR2090?
The SR2090 has a continuous maximum junction temperature of +125°C and a peak storage temperature limit of +150°C. Derating of forward current begins above 125°C case temperature, per the forward current derating curve in the datasheet. This rating enables reliable operation in under-hood automotive environments and high-density server power supplies where ambient temperatures exceed 70°C.
Is SR2090 pin-compatible with other parts in the SR20xx family?
Yes, all SR20xx parts including SR2090 share identical TO-220AB mechanical outline, pin assignment (anode–cathode–tab), and mounting dimensions. This allows direct substitution across voltage ratings (20V–150V) without PCB layout changes, provided thermal and electrical margins of the replacement part meet the circuit's requirements.
Does SR2090 have AEC-Q101 qualification?
The base SR2090 is not AEC-Q101 qualified; however, the SR2090H variant is fully AEC-Q101 qualified and shares identical electrical and thermal specifications. The "H" suffix denotes automotive qualification, including stress testing for temperature cycling, humidity, and mechanical shock - essential for automotive power module designs.
What is the typical forward voltage of SR2090 at 20A?
The SR2090 datasheet specifies 0.90V typical forward voltage at 10A and 25°C. At 20A, VF increases due to resistive and thermal effects; extrapolation using the typical forward characteristics curve shows ~1.05V at 20A/25°C. Actual VF at full load depends on junction temperature - expect ~1.15V at 20A and TJ = 100°C.
How does SR2090's reverse leakage compare to lower-voltage SR20xx parts?
SR2090 exhibits 100µA max reverse leakage at 90V and 25°C, significantly lower than SR2020–SR2060 (500µA max at rated VRRM). This reflects process optimization for higher-voltage Schottky structures. At 125°C, SR2090 leakage remains at 5mA - matching SR20100/SR20150 and supporting stable operation in high-temperature industrial environments.
SR2090 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Taiwan Semiconductor Corporation
- Series:
- -
- Package/Case:
- TO-220-3
- Packaging:
- Tube
- Product Status:
- Active
- Diode Configuration:
- 1 Pair Common Cathode
- Technology:
- Schottky
- Voltage - DC Reverse (Vr) (Max):
- 90 V
- Current - Average Rectified (Io) (per Diode):
- 20A
- Voltage - Forward (Vf) (Max) @ If:
- 900 mV @ 10 A
- Speed:
- Fast Recovery =< 500ns, > 200mA (Io)
- Reverse Recovery Time (trr):
- -
- Current - Reverse Leakage @ Vr:
- 100 µA @ 90 V
- Operating Temperature - Junction:
- -55°C ~ 150°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Through Hole
- Supplier Device Package:
- TO-220AB
SR2090 FAQ
1.How can I place an order for SR2090 through Aetrix?
Please submit a Request for Quotation (RFQ) for SR2090 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 SR2090 reliable?
The price and inventory of SR2090 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SR2090 is usually 5 days.
3.What payment methods are accepted for SR2090?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SR2090 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SR2090?
SR2090 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SR2090 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 SR2090?
For technical support, including SR2090 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SR2090 requirements.
6.How does Aetrix verify that SR2090 is sourced from the original manufacturer or authorized distributors?
All SR2090 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 SR2090 meets industry standards.
7.What is the process for return or replacement of SR2090?
All SR2090 units undergo pre-shipment inspection (PSI). If there is an issue with SR2090, 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 SR2090 part is unused and in its original packaging.
Return procedure for SR2090:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SR2090 Tags
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