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Taiwan Semiconductor Corporation SRS2020
- Part No.:
- SRS2020
- Manufacturer:
- Taiwan Semiconductor Corporation
- Category:
- Diode Arrays
- Package:
- TO-263-3, D2PAK (2 Leads + Tab), TO-263AB
- Datasheet:
-
SRS2020.pdf
- Description:
- DIODE ARR SCHOTT 20V 20A TO263AB
- Quantity:
- Payment:
- Shipping:
Inventory:7,290
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Product details
Overview
SRS2020 from Taiwan Semiconductor is a 20A, 20V repetitive peak reverse voltage Schottky barrier rectifier in TO-263AB (D2PAK) package, featuring 0.55V forward voltage at 10A/25°C, 200A surge capability, and junction-to-case thermal resistance of 1.5°C/W - deployed in high-efficiency SMPS outputs and DC-DC converter secondary-side rectification.
For engineers reviewing the SRS2020 datasheet, SRS2020 pinout, SRS2020 application, or SRS2020 equivalent, key selection criteria include its 20V VRRM, dual-die configuration, moisture sensitivity level 1 rating, JESD201 Class 2 whisker compliance, and UL 94V-0 molding compound - all critical for automated SMT assembly and thermally constrained power stages.
Technical Context
The SRS2020 operates as a single-anode, dual-cathode Schottky rectifier with integrated guard ring for transient overvoltage protection. Its 20A continuous forward current rating and 200A non-repetitive surge capacity support high-duty-cycle switching topologies without thermal runaway under transient load conditions.
Thermal performance is defined by RθJC = 1.5°C/W and maximum junction temperature of 125°C (derated above 25°C ambient), enabling direct heatsink mounting via the exposed cathode tab in TO-263AB. Reverse leakage remains ≤500 µA at 25°C and ≤15 mA at 100°C, ensuring low standby loss in energy-sensitive converters.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VRRM | 20 V - Maximum reverse blocking voltage before breakdown; sets upper limit for output voltage in flyback or forward converters |
| IF | 20 A - Continuous forward current rating at case temperature ≤75°C; defines steady-state conduction capability |
| IFSM | 200 A - Peak non-repetitive surge current (8.3 ms half-sine); supports inrush and fault-current handling |
| VF | 0.55 V @ 10 A, 25°C - Low forward drop reduces conduction loss and improves efficiency in 12V/24V output rails |
| RθJC | 1.5 °C/W - Thermal resistance from junction to case; enables direct thermal path to heatsink without thermal interface material |
| TJ max | 125 °C - Maximum allowable junction temperature; constrains PCB layout and airflow requirements |
| MSL | Level 1 (J-STD-020) - No floor life limitation; suitable for standard reflow without dry-packaging or baking |
Pinout & Package
TO-263AB (D2PAK) surface-mount package with exposed cathode tab (pin 2/3 shorted internally), anode on lead 1. Molding compound meets UL 94V-0; matte tin-plated leads comply with J-STD-002 solderability.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Lead 1 | Anode | Main input terminal for forward conduction; connects to transformer secondary or switch node |
| Leads 2 & 3 (shorted) | Cathode | Common output terminal and thermal interface; mounted directly to copper pour or heatsink |
Key Features
| Feature | Design Value |
|---|---|
| Guard ring structure | Enhances ruggedness against transient overvoltage events without external snubbers in SMPS flyback designs |
| Dual-die configuration | Improves current sharing and thermal distribution across the die area, supporting 20A continuous operation |
| Moisture sensitivity level 1 | Eliminates pre-bake requirement prior to reflow, reducing manufacturing cycle time and cost |
| JESD201 Class 2 whisker resistance | Prevents tin whisker growth under thermal cycling, ensuring long-term reliability in industrial environments |
| UL 94V-0 molding compound | Meets flame-retardancy requirements for end equipment safety certification (e.g., UL62368-1) |
Applications
| Server Power Supply Output Rectification | Laptop Adapter Secondary-Side Rectifier |
|---|---|
Use Scenario: High-density 48V–12V intermediate bus conversion in rack-mounted servers requiring >95% efficiency at full load. IC Role / Device Role / Timing Role: Primary synchronous rectifier replacing MOSFETs in LLC resonant converters; conducts during low-side switch conduction phase. Use Value: 0.55V VF minimizes conduction loss versus silicon diodes, directly improving system efficiency and reducing heatsink size. | Use Scenario: Compact 65W USB-C PD adapter with tight thermal envelope and no active cooling. IC Role / Device Role / Timing Role: Output rectifier in quasi-resonant flyback topology; handles 20A peak currents during burst-mode operation. Use Value: 200A IFSM withstands repeated inrush surges during plug insertion, extending product lifetime beyond 10,000 cycles. |
| Industrial DC-DC Converter Input Stage | Automotive Infotainment Power Module |
Use Scenario: 24V input to 5V/3.3V isolated DC-DC module for PLC I/O modules operating in -40°C to +85°C ambient. IC Role / Device Role / Timing Role: Input-side freewheeling diode in active clamp forward converter; clamps reset energy during main switch off-time. Use Value: 125°C TJ max and 1.5°C/W RθJC allow stable operation without derating at 70°C case temperature. | Use Scenario: Power supply for head-unit display backlight and audio amplifier in vehicles with stop-start systems. IC Role / Device Role / Timing Role: Secondary-side rectifier in buck-derived isolated supply; handles load dump transients up to ±100V. Use Value: Integrated guard ring suppresses avalanche-induced failure during ISO 7637-2 pulse 5a events, eliminating need for external TVS. |
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-20BQ020TRPBF | Same 20V VRRM, 20A IF, but TO-220AC package; RθJC = 2.5°C/W; VF = 0.52V @ 10A | Requires through-hole mounting and larger heatsink; unsuitable for ultra-thin adapters | Select when board space allows through-hole assembly and lower VF outweighs thermal penalty |
| ON Semiconductor SB2020 | 20V VRRM, 20A IF, TO-263AB package; RθJC = 1.6°C/W; VF = 0.57V @ 10A; MSL Level 1 | Nearly identical thermal and packaging specs; slightly higher forward drop increases conduction loss by ~3.6% | Drop-in alternative where Taiwan Semiconductor supply constraints exist; verify marking and date code traceability |
Compared with VS-20BQ020TRPBF and SB2020, the SRS2020 offers optimal balance of low VF, superior thermal resistance, and surface-mount compatibility - making it preferred for high-power-density, reflow-only production of consumer and industrial power supplies.
Availability
SRS2020 is available at Aetrix Electronics and suitable for switching mode power supplies, laptop adapters, and industrial DC-DC converters requiring stable component supply, RoHS/halogen-free compliance, and J-STD-020 Level 1 moisture handling.
Supply support for SRS2020 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 power semiconductor manufacturer headquartered in Hsinchu, Taiwan, specializing in rectifiers, TVS diodes, and MOSFETs for industrial and computing applications.
The SRS series targets high-efficiency AC-DC and DC-DC power conversion, emphasizing ruggedness, thermal performance, and automated assembly readiness for global contract manufacturers.
FAQ
What is the maximum junction temperature rating for the SRS2020?
The SRS2020 has a maximum junction temperature (TJ) rating of 125°C under continuous operation. This value is specified in the Absolute Maximum Ratings table and applies when the device is operated within its rated forward current and thermal boundary conditions. Exceeding 125°C risks irreversible degradation of the Schottky junction. The SRS2020 datasheet confirms this limit explicitly for the SRS2020 variant - not the higher-temperature SRS20x100/150 variants which are rated to 150°C.
Does the SRS2020 have a guard ring, and what function does it serve?
Yes, the SRS2020 incorporates an integrated guard ring structure. As stated in the official features list, this design element provides overvoltage protection by controlling electric field distribution at the die edge. It enhances ruggedness against transient voltage spikes - such as those occurring during switching transitions in flyback converters - thereby reducing susceptibility to avalanche-induced failure without requiring external snubber networks. This feature is confirmed for the SRS2020 in the product documentation.
Is the SRS2020 RoHS and halogen-free compliant?
Yes, the SRS2020 is both RoHS compliant and halogen-free per IEC 61249-2-21. These compliance statements appear in the official FEATURES section of the datasheet. The halogen-free status applies to the molding compound and plating materials, and RoHS compliance covers restriction of lead, mercury, cadmium, hexavalent chromium, PBB, and PBDE. No exemptions are cited; full compliance is declared for the SRS2020 part number.
What is the forward voltage specification for the SRS2020 at 10A and 25°C?
The forward voltage (VF) for the SRS2020 is specified as a maximum of 0.55 V at IF = 10 A and junction temperature TJ = 25°C. This value is listed in the ELECTRICAL SPECIFICATIONS table under "Forward voltage per diode" for the SRS2020 row. The test condition uses a 0.3 ms pulse width, consistent with standard Schottky diode characterization methodology. This VF value directly impacts conduction loss in power stage design.
What packaging and reel quantity is used for the SRS2020?
The SRS2020 is supplied in TO-263AB (D2PAK) package on tape-and-reel format, with 800 units per reel. This information is explicitly stated in the ORDERING INFORMATION section of the datasheet. The "SRS20x" ordering code maps to this package and packing configuration, and the "x" suffix is confirmed as "20" for the SRS2020 variant. No alternate packaging options (e.g., tube or tray) are listed for this part number.
SRS2020 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Taiwan Semiconductor Corporation
- Series:
- -
- Package/Case:
- TO-263-3, D2PAK (2 Leads + Tab), TO-263AB
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Diode Configuration:
- 1 Pair Common Cathode
- Technology:
- Schottky
- Voltage - DC Reverse (Vr) (Max):
- 20 V
- Current - Average Rectified (Io) (per Diode):
- 20A
- Voltage - Forward (Vf) (Max) @ If:
- 550 mV @ 10 A
- Speed:
- Fast Recovery =< 500ns, > 200mA (Io)
- Reverse Recovery Time (trr):
- -
- Current - Reverse Leakage @ Vr:
- 500 µA @ 20 V
- Operating Temperature - Junction:
- -55°C ~ 125°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- TO-263AB (D2PAK)
SRS2020 FAQ
1.How can I place an order for SRS2020 through Aetrix?
Please submit a Request for Quotation (RFQ) for SRS2020 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 SRS2020 reliable?
The price and inventory of SRS2020 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SRS2020 is usually 5 days.
3.What payment methods are accepted for SRS2020?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SRS2020 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SRS2020?
SRS2020 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SRS2020 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 SRS2020?
For technical support, including SRS2020 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SRS2020 requirements.
6.How does Aetrix verify that SRS2020 is sourced from the original manufacturer or authorized distributors?
All SRS2020 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 SRS2020 meets industry standards.
7.What is the process for return or replacement of SRS2020?
All SRS2020 units undergo pre-shipment inspection (PSI). If there is an issue with SRS2020, 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 SRS2020 part is unused and in its original packaging.
Return procedure for SRS2020:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SRS2020 Tags
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BAV99-7-F
Diodes Incorporated
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BAT54C-7-F
Diodes Incorporated
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BAV99,215
Nexperia USA Inc.
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onsemi
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BAV70LT1G
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BAT54CLT1G
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BAT54S-7-F
Diodes Incorporated
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BAV99LT1G
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BAT54S,215
Nexperia USA Inc.
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BAS40-04LT1G
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MMBD1503-TP
Micro Commercial Co
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onsemi
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