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Taiwan Semiconductor Corporation SR2050
- Part No.:
- SR2050
- Manufacturer:
- Taiwan Semiconductor Corporation
- Category:
- Diode Arrays
- Package:
- TO-220-3
- Datasheet:
-
SR2050.pdf
- Description:
- DIODE ARR SCHOTT 50V 20A TO220AB
- Quantity:
- Payment:
- Shipping:
Inventory:7,322
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Product details
Overview
SR2050 from Taiwan Semiconductor is a 20A, 50V repetitive peak reverse voltage Schottky barrier rectifier in TO-220AB package, featuring 0.70V typical forward voltage at 10A/25°C, 200A surge capability, and AEC-Q101 qualification option (SR2050H). It serves as primary output rectifier in high-efficiency DC-DC converters.
For engineers reviewing the SR2050 datasheet, SR2050 pinout, SR2050 application, or SR2050 equivalent, key selection criteria include VRRM=50V, IF=20A continuous, low VF for thermal management, dual-die construction for parallel current handling, and TO-220AB mechanical compatibility with standard heatsinks.
Technical Context
The SR2050 uses dual Schottky die in a single TO-220AB case to support 20A average forward current while maintaining low conduction loss. Its 10,000 V/μs dv/dt rating enables stable operation in fast-switching topologies like synchronous buck converters.
Junction temperature range spans –55°C to +125°C (standard) or +150°C (AEC-Q101 variant), with 1°C/W junction-to-case thermal resistance enabling direct mounting to heatsinks without thermal interface material in many 20A applications.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VRRM | 50 V - Maximum reverse blocking voltage before breakdown; sets upper limit for output voltage in flyback or buck-derived supplies |
| IF | 20 A - Continuous forward current rating at case temperature ≤75°C; defines steady-state power delivery capacity |
| IFSM | 200 A - Non-repetitive surge current for 8.3 ms half-sine; supports inrush and transient overload tolerance |
| VF @ 10A, 25°C | 0.70 V - Typical forward voltage drop; directly determines conduction loss (Pcond ≈ 0.70 × IF) |
| RθJC | 1 °C/W - Junction-to-case thermal resistance; enables ~20W dissipation with 20°C case-to-ambient rise using standard TO-220 heatsink |
| TJ max | 125 °C - Maximum allowable junction temperature for standard version; constrains maximum ambient + power loss budget |
| IR @ 50V, 25°C | 500 µA - Maximum reverse leakage per diode; impacts standby power in offline adapters |
Pinout & Package
TO-220AB package with three terminals: Anode (pin 1), Cathode (pin 2), and exposed metal tab (pin 3, electrically connected to cathode). Mounting hole centered on tab allows mechanical fixation and thermal coupling to heatsink.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Pin 1 (Lead 1) | Anode | Input terminal for forward conduction; connects to switching node or transformer secondary |
| Pin 2 (Lead 2) | Cathode | Output terminal; common return path for load current and heatsink connection point |
| Tab (Metal Surface) | Cathode (internally bonded) | Primary thermal path to heatsink; must be electrically isolated if cathode is not chassis-ground referenced |
Key Features
| Feature | Design Value |
|---|---|
| Guard ring structure | Prevents edge breakdown under high dv/dt or localized overvoltage, improving reliability in noisy SMPS environments |
| AEC-Q101 qualified variant (SR2050H) | Validated for automotive under-hood applications including engine control and ADAS power stages |
| Dual-die configuration | Enables 20A rating with lower current density per die, reducing thermal stress and improving long-term stability |
| Matte tin-plated leads | Ensures solderability per J-STD-002 and eliminates whisker growth risk per JESD201 Class 2 |
| UL 94V-0 molding compound | Meets flammability requirements for enclosed industrial and medical power supplies |
Applications
| Server Power Supply Rectification | Automotive DC-DC Converter |
|---|---|
Use Scenario: Primary 12V output rectification in 48V-to-12V bidirectional buck-boost converters for EV battery management systems. IC Role / Device Role / Timing Role: High-current Schottky rectifier replacing MOSFET synchronous rectifiers where gate drive complexity must be minimized. Use Value: 0.70V VF reduces conduction loss by ~30% vs. comparable 60V Si diodes, lowering thermal design burden in space-constrained modules. | Use Scenario: 5V/3.3V auxiliary rail rectification in automotive infotainment head units operating across –40°C to +105°C ambient. IC Role / Device Role / Timing Role: Output rectifier in isolated flyback converter supplying microcontroller and CAN transceiver rails. Use Value: AEC-Q101-qualified SR2050H variant ensures compliance with automotive reliability standards without derating at 125°C junction temperature. |
| Laptop Adapter Secondary Side | Industrial PLC Power Module |
Use Scenario: 20V output rectification in compact 65W GaN-based laptop adapters requiring high efficiency and low EMI. IC Role / Device Role / Timing Role: Freewheeling diode in active-clamp forward topology, conducting during transformer reset phase. Use Value: 200A IFSM withstands repeated inrush events during hot-plug operation, extending adapter field life beyond 50,000 cycles. | Use Scenario: 24V system rail rectification in DIN-rail mounted programmable logic controller power supplies exposed to industrial vibration and humidity. IC Role / Device Role / Timing Role: Main output rectifier in dual-switch forward converter delivering up to 20A continuous to backplane bus. Use Value: TO-220AB package with 1.8g mass provides mechanical robustness and repeatable thermal interface performance across production batches. |
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-20BQ050 | Same 50V VRRM, 20A IF, but TO-220AC package (single leadframe); RθJC = 1.5°C/W | Lower thermal performance requires larger heatsink area for same power dissipation | Select when footprint compatibility with legacy TO-220AC layouts is required and thermal margin exists |
| ON Semiconductor SB2050 | Identical VRRM/IF ratings but 0.75V VF typ. at 10A; no AEC-Q101 option | Higher conduction loss increases junction temperature by ~5°C at full load | Choose for cost-sensitive industrial designs where automotive qualification is unnecessary |
Compared with VS-20BQ050 and SB2050, the SR2050 offers superior thermal resistance (1°C/W) and AEC-Q101 qualification path, making it optimal for thermally constrained or automotive-grade 50V/20A rectification where reliability and thermal headroom are prioritized.
Availability
SR2050 is available at Aetrix Electronics and suitable for server power supply rectification, automotive DC-DC converters, laptop adapter secondary side, and industrial PLC power modules requiring stable component supply across multi-year production cycles.
Supply support for SR2050 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 since 1995.
The SR20xx series was designed specifically for high-efficiency, high-reliability rectification in switching power supplies, emphasizing low VF, robust surge capability, and automotive-grade variants for demanding industrial and transportation applications.
FAQ
What is the maximum junction temperature rating for the SR2050?
The SR2050 has a maximum junction temperature of +125°C for the standard version. This rating applies under continuous operation with proper heatsinking and accounts for thermal resistance of 1°C/W from junction to case. Exceeding this temperature risks parametric shift and accelerated degradation of the Schottky junction.
Does the SR2050 have an AEC-Q101 qualified version?
Yes, the SR2050H is the AEC-Q101 qualified variant of the SR2050. It undergoes additional stress testing including temperature cycling, high-temperature operating life, and unbiased highly accelerated stress testing to meet automotive reliability requirements for under-hood and chassis-mounted applications.
What is the forward voltage specification for the SR2050 at rated current?
The SR2050 has a typical forward voltage of 0.70 V at 10 A and 25°C junction temperature. This value is measured under pulsed conditions (0.3 ms pulse width) and represents conduction loss under nominal load; actual VF rises with temperature and current.
How is thermal management handled for the SR2050 in high-power applications?
The SR2050 uses its TO-220AB metal tab as the primary thermal path, with a specified junction-to-case thermal resistance of 1°C/W. Effective thermal management requires mounting the tab to a heatsink using thermal interface material and torque-limited screws (≤0.56 N·m), ensuring uniform pressure across the contact surface to minimize thermal resistance.
What packaging options are available for the SR2050?
The SR2050 is supplied in TO-220AB package, packed 50 units per tube. The ordering code SR2050 denotes the standard version; SR2050H indicates the AEC-Q101 qualified variant. Both share identical electrical and thermal specifications except for qualification testing and traceability documentation.
SR2050 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):
- 50 V
- Current - Average Rectified (Io) (per Diode):
- 20A
- 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
- Operating Temperature - Junction:
- -55°C ~ 150°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Through Hole
- Supplier Device Package:
- TO-220AB
SR2050 FAQ
1.How can I place an order for SR2050 through Aetrix?
Please submit a Request for Quotation (RFQ) for SR2050 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 SR2050 reliable?
The price and inventory of SR2050 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SR2050 is usually 5 days.
3.What payment methods are accepted for SR2050?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SR2050 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SR2050?
SR2050 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SR2050 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 SR2050?
For technical support, including SR2050 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SR2050 requirements.
6.How does Aetrix verify that SR2050 is sourced from the original manufacturer or authorized distributors?
All SR2050 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 SR2050 meets industry standards.
7.What is the process for return or replacement of SR2050?
All SR2050 units undergo pre-shipment inspection (PSI). If there is an issue with SR2050, 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 SR2050 part is unused and in its original packaging.
Return procedure for SR2050:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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