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Taiwan Semiconductor Corporation SK520C R7G
- Part No.:
- SK520C R7G
- Manufacturer:
- Taiwan Semiconductor Corporation
- Category:
- Single Diodes
- Package:
- DO-214AB, SMC
- Datasheet:
-
SK520C R7G.pdf
- Description:
- DIODE SCHOTTKY 200V 5A DO214AB
- Quantity:
- Payment:
- Shipping:
Inventory:4,892
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Product details
Overview
SK520C R7G from Taiwan Semiconductor is a 5A, 200V Schottky barrier surface-mount rectifier in DO-214AB (SMC) package, optimized for high-efficiency switching power supplies. It delivers low forward voltage (0.95 V at 5 A, 25°C), ultra-low reverse leakage (0.3 mA at 200 V, 25°C), and high surge capability (120 A IFSM), enabling compact, thermally robust SMPS designs in adapters and LED drivers.
For engineers reviewing the SK520C R7G datasheet, SK520C R7G pinout, SK520C R7G application, or SK520C R7G equivalent, key selection criteria include its 200 V VRRM rating, 0.95 V VF at full load, 13 °C/W junction-to-lead thermal resistance, moisture sensitivity level 1 compliance, and RoHS/halogen-free construction - all critical for high-reliability, automated SMT deployment.
Technical Context
The SK520C R7G is a single-die Schottky rectifier engineered for fast recovery and minimal conduction loss in DC-DC conversion stages. Its guard ring structure provides overvoltage protection, while the matte tin-plated leads ensure reliable solderability per J-STD-002 and whisker resistance per JESD 201 Class 2.
Thermal performance is validated on a 16 mm × 16 mm copper pad PCB: RθJA = 53 °C/W, RθJC = 16 °C/W, and RθJL = 13 °C/W. Reverse leakage remains ≤5 mA up to 125°C junction temperature, supporting operation in thermally constrained environments.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VRRM | 200 V - Maximum repetitive reverse voltage; defines safe blocking capability in 200 V-rated power rails |
| IF | 5 A - Continuous forward current rating; supports sustained output delivery in mid-power SMPS |
| VF @ 5 A, 25°C | 0.95 V - Low conduction loss reduces heat generation and improves system efficiency |
| IR @ 200 V, 25°C | 0.3 mA - Minimal leakage preserves efficiency during off-state in high-voltage topologies |
| IFSM (8.3 ms) | 120 A - Withstands transient inrush currents without degradation, e.g., during cold-start |
| TJ max | +150 °C - Enables operation in high-ambient industrial or enclosed lighting environments |
| RθJL | 13 °C/W - Efficient heat transfer to PCB leads, reducing need for oversized copper pours |
Pinout & Package
Package: DO-214AB (SMC), surface-mount, cathode indicated by band. Weight: 0.210 g. Meets UL 94V-0 flammability rating and J-STD-020 moisture sensitivity level 1.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Input current entry point | Connected to source-side of switching node; accepts pulsed or continuous forward current up to 5 A |
| Cathode | Output current exit point | Marked with band; ties to output rail or ground return path; carries full load current with minimal VF drop |
Key Features
| Feature | Design Value |
|---|---|
| Guard ring overvoltage protection | Enhances ruggedness against voltage transients without external snubbers in flyback or boost converters |
| Moisture sensitivity level 1 | Eliminates bake requirements before reflow, streamlining high-volume automated assembly |
| Matte tin-plated leads | Ensures consistent wetting and joint reliability per J-STD-002, reducing voiding risk |
| RoHS and halogen-free | Meets global environmental compliance mandates without compromising thermal or electrical performance |
Applications
| Laptop Adapter Power Stage | LED Driver Secondary Rectification |
|---|---|
Use Scenario: High-frequency secondary-side rectification in 65 W laptop AC/DC adapters operating at 100–130 kHz. IC Role / Device Role / Timing Role: Schottky rectifier replacing conventional diodes to minimize conduction loss and improve efficiency above 88%. Use Value: 0.95 V VF at 5 A reduces power dissipation by ~0.4 W vs. silicon diodes, lowering heatsink requirements and improving thermal margin. |
Use Scenario: Output rectification in constant-current LED drivers for commercial downlights (24–48 V output, 0.7–1.5 A). IC Role / Device Role / Timing Role: Primary output rectifier handling continuous DC current with minimal ripple-induced heating. Use Value: 0.3 mA IR at 200 V ensures stable regulation under light-load conditions, preventing output voltage drift. |
| Industrial SMPS Auxiliary Supply | USB-C PD Charger Output Stage |
Use Scenario: +12 V auxiliary rail rectification in industrial PLC power modules requiring -40°C to +85°C ambient operation. IC Role / Device Role / Timing Role: High-reliability rectifier with guaranteed 150°C TJ max and 120 A surge rating for fault tolerance. Use Value: 13 °C/W RθJL enables direct thermal coupling to PCB ground plane, eliminating discrete thermal pads. |
Use Scenario: Synchronous rectification replacement in 45–65 W USB-C PD chargers using QR flyback topology. IC Role / Device Role / Timing Role: Fast-recovery, low-VF rectifier minimizing losses during high-duty-cycle conduction phases. Use Value: Guard ring structure withstands 10,000 V/µs dV/dt, preventing false turn-on during rapid voltage transitions in QR control. |
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-50WQ03FNTR-M3 | 30 V VRRM, 5 A IF, VF = 0.42 V @ 5 A - lower voltage, significantly lower VF | Not suitable for 200 V blocking; limited to ≤30 V output rails | Select only for low-voltage, ultra-low-loss applications where VRRM ≤30 V suffices |
| ON Semiconductor SB5200-E3/54 | 200 V VRRM, 5 A IF, VF = 0.92 V @ 5 A, RθJA = 60 °C/W - slightly lower VF but higher thermal resistance | Requires larger PCB copper area for equivalent thermal performance | Prefer when legacy footprint compatibility with SMB package is required; not pin-compatible with DO-214AB |
Compared with VS-50WQ03FNTR-M3 and SB5200-E3/54, the SK520C R7G uniquely balances 200 V blocking, 0.95 V VF, and 13 °C/W RθJL in DO-214AB - offering superior thermal efficiency in space-constrained 200 V SMPS without sacrificing surge robustness.
Availability
SK520C R7G is available at Aetrix Electronics and suitable for switching mode power supplies, LED lighting drivers, and AC/DC adapters requiring stable component supply, JEDEC-compliant packaging, and RoHS/halogen-free manufacturing.
Supply support for SK520C R7G 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 devices, and MOSFETs.
The SK520C R7G belongs to TSC's SK5xC Schottky rectifier family, designed specifically for high-efficiency, high-reliability secondary-side rectification in consumer and industrial switch-mode power supplies.
FAQ
What is the maximum junction temperature rating for the SK520C R7G?
The SK520C R7G has a maximum junction temperature (TJ) of +150°C, verified per absolute maximum ratings in the official TSC datasheet. This allows reliable operation in enclosed or high-ambient environments such as LED driver housings or industrial power modules. Derating curves confirm usable current capacity down to 0 A at 150°C ambient on standard PCB layouts. The SK520C R7G must be mounted on a 16 mm × 16 mm Cu pad to achieve specified thermal resistance values.
Does the SK520C R7G meet RoHS and halogen-free requirements?
Yes, the SK520C R7G is certified RoHS compliant and halogen-free per TSC's product documentation and material declarations. The molding compound meets UL 94V-0 flammability rating, and terminals use matte tin plating compliant with J-STD-002 solderability standards. These attributes are confirmed in the "Features" section of the SK52C–SK520C datasheet (Version S2311), making the SK520C R7G suitable for export to EU, Japan, and other regulated markets.
What is the forward voltage drop of the SK520C R7G at rated current?
The SK520C R7G exhibits a typical forward voltage (VF) of 0.95 V at 5 A and 25°C junction temperature, as specified in the Electrical Specifications table under "Forward voltage(1)" for SK515C/SK520C variants. This value is measured with 0.3 ms pulse width and is representative of conduction loss under real-world switching conditions. At 100°C, VF decreases slightly due to Schottky physics, remaining below 0.92 V.
Is the SK520C R7G suitable for high-surge applications like motor drive clamping?
The SK520C R7G supports a non-repetitive peak forward surge current (IFSM) of 120 A for an 8.3 ms half-sine wave, making it appropriate for transient energy absorption in flyback snubbers or input rectifier stages subject to line surges. However, it is not rated for repetitive clamping duty cycles; for motor drive freewheeling, dedicated fast-recovery or avalanche-rated diodes are recommended. The SK520C R7G's guard ring enhances single-event ruggedness but does not imply avalanche capability.
What is the moisture sensitivity level (MSL) of the SK520C R7G?
The SK520C R7G is rated MSL Level 1 per J-STD-020, meaning it may be stored indefinitely at ≤30°C/85% RH without baking prior to reflow. This eliminates pre-conditioning steps in high-volume SMT lines and simplifies inventory management. The DO-214AB (SMC) package construction and molding compound contribute to this robust moisture resistance, confirmed in the Mechanical Data section of the TSC datasheet.
SK520C R7G Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Taiwan Semiconductor Corporation
- Series:
- -
- Package/Case:
- DO-214AB, SMC
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Discontinued at Digi-Key
- Technology:
- Schottky
- Voltage - DC Reverse (Vr) (Max):
- 200 V
- Current - Average Rectified (Io):
- 5A
- Voltage - Forward (Vf) (Max) @ If:
- 950 mV @ 5 A
- Speed:
- Fast Recovery =< 500ns, > 200mA (Io)
- Reverse Recovery Time (trr):
- -
- Current - Reverse Leakage @ Vr:
- 300 µA @ 200 V
- Capacitance @ Vr, F:
- -
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- DO-214AB (SMC)
- Operating Temperature - Junction:
- -55°C ~ 150°C
SK520C R7G FAQ
1.How can I place an order for SK520C R7G through Aetrix?
Please submit a Request for Quotation (RFQ) for SK520C R7G 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 SK520C R7G reliable?
The price and inventory of SK520C R7G are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SK520C R7G is usually 5 days.
3.What payment methods are accepted for SK520C R7G?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SK520C R7G transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SK520C R7G?
SK520C R7G orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SK520C R7G 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 SK520C R7G?
For technical support, including SK520C R7G datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SK520C R7G requirements.
6.How does Aetrix verify that SK520C R7G is sourced from the original manufacturer or authorized distributors?
All SK520C R7G 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 SK520C R7G meets industry standards.
7.What is the process for return or replacement of SK520C R7G?
All SK520C R7G units undergo pre-shipment inspection (PSI). If there is an issue with SK520C R7G, 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 SK520C R7G part is unused and in its original packaging.
Return procedure for SK520C R7G:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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