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Taiwan Semiconductor Corporation SK82C
- Part No.:
- SK82C
- Manufacturer:
- Taiwan Semiconductor Corporation
- Category:
- Single Diodes
- Package:
- DO-214AB, SMC
- Datasheet:
-
SK82C.pdf
- Description:
- DIODE SCHOTTKY 20V 8A DO214AB
- Quantity:
- Payment:
- Shipping:
Inventory:8,680
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Product details
Overview
SK82C from Taiwan Semiconductor is a 20V, 8A surface-mount Schottky barrier rectifier in DO-214AB (SMC) package, featuring 0.55V forward voltage at 8A/25°C, 150A surge capability, and junction temperature rating up to +125°C. It serves as a high-efficiency output rectifier in low-voltage DC-DC converters and AC-DC adapters.
For engineers reviewing the SK82C datasheet, SK82C pinout, SK82C application, or SK82C equivalent, key selection criteria include its 20V VRRM, low VF performance at high IF, thermal resistance of 20°C/W, cathode-band polarity marking, and J-STD-020 Level 1 moisture sensitivity.
Technical Context
The SK82C employs a single-die Schottky structure optimized for low forward conduction loss and fast switching recovery-critical for high-frequency SMPS operation. Its 10,000 V/µs dV/dt rating supports robust noise immunity in noisy power rail environments.
Thermally, it delivers 20°C/W junction-to-ambient resistance in standard PCB mounting, enabling sustained 8A DC operation with appropriate copper area. The device operates across –55°C to +125°C junction range and meets JESD201 Class 2 whisker resistance and RoHS/halogen-free compliance.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VRRM | 20 V - Maximum repetitive reverse blocking voltage; defines safe operating ceiling in 12–15V output rails |
| IF | 8 A - Continuous forward current rating at TA = 25°C; derates linearly above ambient per Fig.1 |
| VF | 0.55 V max @ 8A, 25°C - Directly reduces conduction loss and improves efficiency in low-VOUT supplies |
| IFSM | 150 A - Non-repetitive surge current handling for startup/inrush events without failure |
| RθJA | 20 °C/W - Enables thermal design with standard 1-in² 2-oz copper pad for full 8A operation |
| TJ max | +125 °C - Specifies maximum allowable junction temperature; limits usable ambient range under load |
| Mechanical Package | DO-214AB (SMC) - Standardized SMT outline with cathode band polarity; compatible with automated pick-and-place |
Pinout & Package
DO-214AB (SMC) package: two-terminal surface-mount device with cathode indicated by molded band on body. No internal leads or multi-pin configuration.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Forward current entry point | Connected to lower-potential node (e.g., transformer secondary center-tap or switch node) |
| Cathode | Forward current exit / reverse-blocking terminal | Marked by visible band; ties to output filter capacitor positive rail |
Key Features
| Feature | Design Value |
|---|---|
| Guard ring structure | Enhances edge termination reliability and prevents premature avalanche breakdown under transient overvoltage |
| Low VF at high IF | 0.55V max at 8A enables >92% efficiency in 5V/8A buck converter designs at 500kHz |
| J-STD-020 Level 1 MSL | Zero bake requirement before reflow; supports standard lead-free solder profiles without moisture damage risk |
| Matte tin-plated leads | Ensures consistent wetting and void-free solder joints per J-STD-002 qualification |
Applications
| Server VRM Output Rectification | USB-C PD Adapter Secondary Side |
|---|---|
Use Scenario: High-current, low-voltage DC-DC conversion delivering 3.3V/5V/12V from 48V intermediate bus in rack-mounted servers. IC Role / Device Role / Timing Role: Primary output rectifier replacing synchronous MOSFETs where simplicity and cost outweigh marginal efficiency gain. Use Value: 0.55V VF minimizes conduction loss at 8A, reducing heatsink requirements versus higher-VF alternatives. | Use Scenario: Secondary-side rectification in compact 65W USB-C Power Delivery adapters with 20V input and 5–20V programmable output. IC Role / Device Role / Timing Role: Unidirectional current path after high-frequency transformer; handles 8A continuous output with minimal voltage drop. Use Value: DO-214AB footprint allows dense layout; 150A IFSM withstands repeated hot-plug surges without degradation. |
| LED Driver Constant-Current Loop | Industrial 24V DC Power Supply |
Use Scenario: Constant-current regulation for high-brightness LED strings in architectural lighting fixtures with 20–36V input range. IC Role / Device Role / Timing Role: Freewheeling diode in buck-based constant-current controller IC feedback loop. Use Value: Fast recovery and low VF prevent thermal runaway during PWM dimming cycles at 100–1000Hz. | Use Scenario: Input rectification stage in DIN-rail mounted 24V/10A industrial power supplies feeding PLC I/O modules. IC Role / Device Role / Timing Role: Bridge leg component in full-wave rectifier configuration feeding bulk capacitor. Use Value: 20°C/W RθJA enables stable operation at full load in enclosed enclosures without forced air. |
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-8EWH02FN-M3/45 | 20V VRRM, 8A IF, VF = 0.49V typ @ 8A - lower conduction loss but higher leakage (1.0mA @ 25°C) | Better efficiency in thermally constrained spaces; less suitable for high-temperature hold conditions due to IR drift | Prefer when peak efficiency >94% is required and board space allows tighter thermal management |
| ON Semiconductor SB820 | 20V VRRM, 8A IF, VF = 0.57V max @ 8A - slightly higher VF, RθJA = 22°C/W, same DO-214AB package | Nearly identical thermal and electrical envelope; minor efficiency penalty (~0.1W extra loss at 8A) | Select when dual-sourcing is needed and minor VF trade-off is acceptable for supply chain flexibility |
Compared with VS-8EWH02FN-M3/45 and SB820, the SK82C offers balanced VF/IR performance, superior surge robustness (150A vs. 120A), and industry-leading moisture resilience (MSL Level 1), making it optimal for cost-sensitive, high-volume adapter and industrial power designs.
Availability
SK82C is available at Aetrix Electronics and suitable for switching mode power supplies, USB-C PD adapters, LED drivers, and industrial 24V DC power supplies requiring stable component supply and long-term production continuity.
Supply support for SK82C 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 diodes, and MOSFETs since 1979.
The SK82C belongs to TSC's SK8x series of Schottky rectifiers engineered for high-current, low-voltage DC-DC and AC-DC conversion in consumer, industrial, and computing power systems.
FAQ
What is the maximum junction temperature rating for the SK82C?
The SK82C has a maximum junction temperature (TJ) rating of +125°C. This value is specified in the Absolute Maximum Ratings table and applies under continuous DC forward current conditions. Operation beyond this limit risks irreversible parametric shift or thermal runaway. Derating curves in the datasheet confirm usable current capacity drops to ~5.5A at 100°C ambient with standard PCB layout.
Does the SK82C have a defined pinout or terminal assignment?
Yes - the SK82C is a two-terminal DO-214AB (SMC) device with unambiguous polarity: the cathode is marked by a visible band on the molded case, and the anode is the opposite end. No internal pin numbering applies; circuit connection follows standard Schottky diode convention - anode to source, cathode to load.
Is the SK82C suitable for use in automotive applications?
No - the SK82C is not qualified to AEC-Q101 or automotive-grade reliability standards. Taiwan Semiconductor explicitly states in its notice that products in the SK82C–SK810C family are "not designed for use in medical, life-saving, or life-sustaining applications," and no automotive qualification data is published. For automotive 12V systems, consider AEC-Q101-certified alternatives like STTH8R02DJF.
What is the forward voltage specification for SK82C at elevated temperature?
The SK82C forward voltage increases with junction temperature: typical VF rises to ~0.48V at 100°C (vs. 0.55V max at 25°C). This positive temperature coefficient is inherent to Schottky diodes and ensures current sharing stability in parallel configurations. Full temperature-dependent VF data appears in Fig.4 of the SK82C–SK810C datasheet.
How does the SK82C compare to the SK83C in terms of reverse voltage rating?
The SK82C has a VRRM of 20V, while the SK83C is rated for 30V. Both share identical IF = 8A, IFSM = 150A, package, and thermal specs. Substituting SK83C for SK82C introduces unnecessary voltage margin in 12–15V output circuits and may increase VF slightly due to higher barrier height - confirmed by datasheet VF values (0.55V max for SK82C vs. 0.58V max for SK83C at 8A/25°C).
SK82C Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Taiwan Semiconductor Corporation
- Series:
- -
- Package/Case:
- DO-214AB, SMC
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Technology:
- Schottky
- Voltage - DC Reverse (Vr) (Max):
- 20 V
- Current - Average Rectified (Io):
- 8A
- Voltage - Forward (Vf) (Max) @ If:
- 550 mV @ 8 A
- Speed:
- Fast Recovery =< 500ns, > 200mA (Io)
- Reverse Recovery Time (trr):
- -
- Current - Reverse Leakage @ Vr:
- 500 µA @ 20 V
- Capacitance @ Vr, F:
- -
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- DO-214AB (SMC)
- Operating Temperature - Junction:
- -55°C ~ 125°C
SK82C FAQ
1.How can I place an order for SK82C through Aetrix?
Please submit a Request for Quotation (RFQ) for SK82C 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 SK82C reliable?
The price and inventory of SK82C are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SK82C is usually 5 days.
3.What payment methods are accepted for SK82C?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SK82C transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SK82C?
SK82C orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SK82C 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 SK82C?
For technical support, including SK82C datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SK82C requirements.
6.How does Aetrix verify that SK82C is sourced from the original manufacturer or authorized distributors?
All SK82C 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 SK82C meets industry standards.
7.What is the process for return or replacement of SK82C?
All SK82C units undergo pre-shipment inspection (PSI). If there is an issue with SK82C, 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 SK82C part is unused and in its original packaging.
Return procedure for SK82C:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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