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Taiwan Semiconductor Corporation SK52C V6G
- Part No.:
- SK52C V6G
- Manufacturer:
- Taiwan Semiconductor Corporation
- Category:
- Single Diodes
- Package:
- DO-214AB, SMC
- Datasheet:
-
SK52C V6G.pdf
- Description:
- DIODE SCHOTTKY 20V 5A DO214AB
- Quantity:
- Payment:
- Shipping:
Inventory:8,805
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Product details
Overview
SK52C from Taiwan Semiconductor is a 5A, 20V Schottky barrier surface-mount rectifier in DO-214AB (SMC) package, optimized for high-efficiency switching power supplies with low forward voltage (0.55 V at 5 A, 25°C), high surge capability (120 A IFSM), and junction temperature up to 150°C. It serves as primary output rectification in compact AC/DC adapters and DC/DC converters.
For engineers reviewing the SK52C datasheet, SK52C pinout, SK52C application, or SK52C equivalent, key selection criteria include its 20 V repetitive peak reverse voltage, 13°C/W junction-to-lead thermal resistance, moisture sensitivity level 1 compliance, RoHS/halogen-free status, and cathode-band polarity marking - all critical for thermal reliability and automated SMT assembly.
Technical Context
The SK52C employs a single-die Schottky structure with guard ring overvoltage protection, enabling fast recovery (no reverse recovery time specified, inherent to Schottky) and stable operation under repetitive surge conditions. Its 0.55 V forward voltage at 5 A and 25°C directly reduces conduction loss in high-frequency SMPS topologies.
Thermal performance is defined for PCB mounting on a 16 mm × 16 mm copper pad: RθJL = 13°C/W and RθJA = 53°C/W. The device operates across –55°C to +150°C junction range and meets JESD201 Class 2 whisker resistance and J-STD-020 Level 1 moisture sensitivity requirements.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Forward current (IF) | 5 A continuous - supports medium-power output stages without forced air cooling |
| Repetitive peak reverse voltage (VRRM) | 20 V - suitable for 12 V-output SMPS with margin against transient overshoot |
| Forward voltage (VF) | 0.55 V max at 5 A, 25°C - enables >92% efficiency in 12 V → 5 V buck converters |
| Surge peak forward current (IFSM) | 120 A (8.3 ms half-sine) - withstands cold-start inrush and line transients |
| Junction temperature (TJ) | –55°C to +150°C - rated for industrial ambient environments with derating above 75°C |
| Junction-to-lead thermal resistance (RθJL) | 13°C/W - allows direct thermal coupling to PCB copper for passive heat dissipation |
| Moisture sensitivity level | Level 1 per J-STD-020 - no bake required before reflow, compatible with standard SMT lines |
Pinout & Package
Package: DO-214AB (SMC), surface-mount plastic case with matte tin-plated leads, cathode indicated by band. Weight: 0.210 g.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Input terminal for forward conduction | Connected to transformer secondary or switch node; accepts 5 A continuous current |
| Cathode | Output terminal for forward conduction | Marked by band; delivers regulated DC output; low VF minimizes drop in output path |
Key Features
| Feature | Design Value |
|---|---|
| Guard ring structure | Enhances ruggedness against voltage transients and improves long-term reliability in unregulated input rails |
| Low forward voltage (0.55 V) | Reduces conduction loss by ~35% versus comparable 20 V Si diodes, lowering thermal stress in dense layouts |
| High surge current (120 A) | Eliminates need for external surge limiting in adapter front-end designs with minimal BOM impact |
| Halogen-free & RoHS compliant | Meets IPC-1752A material declaration requirements for global commercial and industrial shipments |
| Automated placement compatibility | DO-214AB outline and lead coplanarity support high-yield pick-and-place at ≥25,000 UPH |
Applications
| AC/DC Adapters | LED Drivers |
|---|---|
Use Scenario: 12 V, 36 W wall-mounted adapter for consumer electronics with universal AC input. IC Role / Device Role / Timing Role: Output rectifier in flyback secondary synchronous or quasi-resonant topology. Use Value: 0.55 V VF enables >89% full-load efficiency at 230 VAC input, meeting DOE VI and CoC Tier 2 standards. |
Use Scenario: Constant-current LED driver for indoor architectural lighting (24 V output, 700 mA). IC Role / Device Role / Timing Role: Secondary-side freewheeling rectifier in buck-boost LED controller stage. Use Value: Low VF minimizes heat generation near LEDs, avoiding thermal derating of lumen output over lifetime. |
| Industrial DC/DC Converters | USB PD Power Delivery Modules |
Use Scenario: 24 V input to 5 V/3 A isolated converter for PLC I/O modules operating at 70°C ambient. IC Role / Device Role / Timing Role: Primary output rectifier in forward-converter secondary winding. Use Value: 150°C TJ rating and 13°C/W RθJL allow operation without heatsink at full load in sealed enclosures. |
Use Scenario: 20 V PPS output stage in 65 W USB PD 3.1 EPR adapter with dual-C port architecture. IC Role / Device Role / Timing Role: Clamp rectifier in programmable power supply (PPS) output filter stage. Use Value: 20 V VRRM provides 2× margin over 10 V PPS minimum, while low IR (<0.5 mA @ 25°C) prevents standby leakage. |
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 = 0.45 V @ 5 A - lower VF but higher reverse voltage rating | Better suited for 24 V-output systems requiring tighter voltage margin; not ideal for 12 V designs where 20 V rating suffices | Select when lowest possible conduction loss is prioritized and 30 V rating aligns with system overvoltage design |
| ON Semiconductor SB520-E3/54 | 20 V VRRM, 5 A IF, VF = 0.52 V @ 5 A - slightly lower VF, same voltage rating, DO-214AA (SMA) package | Smaller footprint (SMA vs SMC) limits thermal mass; requires tighter layout control for thermal management | Choose for space-constrained boards where 16 mm² Cu pad area is unavailable, accepting reduced surge robustness |
Compared with VS-50WQ03FNTR-M3 and SB520-E3/54, the SK52C offers optimal balance of 20 V rating precision, 120 A surge headroom, and DO-214AB thermal performance - making it preferred for cost-sensitive, thermally demanding 12 V adapter and industrial converter designs.
Availability
SK52C is available at Aetrix Electronics and suitable for AC/DC adapters, LED drivers, and industrial DC/DC converters requiring stable component supply, J-STD-020 Level 1 handling, and halogen-free compliance.
Supply support for SK52C 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, serving global power electronics markets since 1979.
The SK52C belongs to TSC's SK5xC Schottky rectifier family, engineered specifically for high-efficiency, surface-mount secondary-side rectification in compact switching power supplies and lighting systems.
FAQ
What is the maximum junction temperature rating for the SK52C?
The SK52C has a maximum junction temperature (TJ) of +150°C, with operational range from –55°C to +150°C. This rating enables reliable use in enclosed industrial power supplies where ambient temperatures exceed 70°C, provided thermal design accounts for RθJL = 13°C/W and PCB copper area per datasheet guidelines. Derating begins above 75°C ambient.
Does the SK52C have a specified reverse recovery time (trr)?
No - the SK52C is a Schottky barrier rectifier, which inherently lacks minority-carrier storage and therefore has no defined reverse recovery time. Its switching behavior is governed by junction capacitance (typical 200 pF at 4 V, f = 1 MHz) and series resistance, making it suitable for high-frequency SMPS (>100 kHz) without reverse recovery losses.
Is the SK52C suitable for automotive applications?
The SK52C is not qualified to AEC-Q101 and is not recommended for automotive powertrain or safety-critical systems. It is designed for commercial and industrial applications including adapters, LED drivers, and DC/DC converters. For automotive-grade alternatives, consult TSC's AEC-Q101-certified Schottky portfolio.
What does the "C" suffix in SK52C indicate?
The "C" in SK52C denotes Taiwan Semiconductor's standard commercial-grade Schottky rectifier variant - indicating compliance with RoHS, halogen-free, and J-STD-020 Level 1 moisture sensitivity specifications. It distinguishes this version from legacy or industrial variants that may differ in marking, test flow, or packaging.
How is polarity identified on the SK52C package?
Polarity on the SK52C is indicated by a cathode band printed on the molded plastic body of the DO-214AB (SMC) package. The banded end is the cathode terminal; the opposite end is the anode. This marking is visible under standard optical inspection and compatible with automated optical recognition (AOI) systems in SMT lines.
SK52C V6G 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):
- 20 V
- Current - Average Rectified (Io):
- 5A
- Voltage - Forward (Vf) (Max) @ If:
- 550 mV @ 5 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 ~ 150°C
SK52C V6G FAQ
1.How can I place an order for SK52C V6G through Aetrix?
Please submit a Request for Quotation (RFQ) for SK52C V6G 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 SK52C V6G reliable?
The price and inventory of SK52C V6G are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SK52C V6G is usually 5 days.
3.What payment methods are accepted for SK52C V6G?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SK52C V6G transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SK52C V6G?
SK52C V6G orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SK52C V6G 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 SK52C V6G?
For technical support, including SK52C V6G datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SK52C V6G requirements.
6.How does Aetrix verify that SK52C V6G is sourced from the original manufacturer or authorized distributors?
All SK52C V6G 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 SK52C V6G meets industry standards.
7.What is the process for return or replacement of SK52C V6G?
All SK52C V6G units undergo pre-shipment inspection (PSI). If there is an issue with SK52C V6G, 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 SK52C V6G part is unused and in its original packaging.
Return procedure for SK52C V6G:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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