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Taiwan Semiconductor Corporation SK56CH
- Part No.:
- SK56CH
- Manufacturer:
- Taiwan Semiconductor Corporation
- Category:
- Single Diodes
- Package:
- DO-214AB, SMC
- Datasheet:
-
SK56CH.pdf
- Description:
- DIODE SCHOTTKY 60V 5A DO214AB
- Quantity:
- Payment:
- Shipping:
Inventory:9,806
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Product details
Overview
SK56CH from Taiwan Semiconductor is a 5A, 60V AEC-Q101-qualified Schottky barrier rectifier in DO-214AB (SMC) package, featuring 0.75V forward voltage at 5A/25°C, 120A surge capability, and 13°C/W junction-to-lead thermal resistance. It serves as a freewheeling or reverse-battery protection diode in automotive DC/DC converters.
For engineers reviewing the SK56CH datasheet, SK56CH pinout, SK56CH application, or SK56CH equivalent, key selection criteria include its 60V VRRM, low VF for high-efficiency 12V–48V systems, AEC-Q101 qualification for under-hood use, and DO-214AB thermal performance on standard PCB copper pads.
Technical Context
The SK56CH uses a single-die Schottky structure with guard ring overvoltage protection and matte tin-plated leads compliant with J-STD-002 solderability. Its 10,000 V/µs dV/dt rating supports fast-switching topologies without parasitic turn-on.
Thermal design relies on RθJL = 13°C/W and RθJA = 53°C/W (measured on 16mm × 16mm Cu pad), enabling sustained 5A operation up to 150°C junction temperature with appropriate board layout.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VRRM | 60 V - Maximum repetitive reverse voltage; defines safe operating range in 48V automotive bus clamping |
| VF @ 5A, 25°C | 0.75 V - Low conduction loss enabling >92% efficiency in 12V–48V buck converters |
| IFSM | 120 A - Withstands 8.3ms half-sine surge; supports load dump and jump-start transient immunity |
| IR @ 60V, 25°C | 0.5 mA - Low leakage preserves battery standby life in always-on vehicle modules |
| TJ max | 150 °C - Enables under-hood deployment without derating in ambient up to 105°C |
| RθJL | 13 °C/W - Enables direct thermal coupling to PCB copper; simplifies heatsinking in space-constrained modules |
Pinout & Package
Package: DO-214AB (SMC), surface-mount, cathode indicated by band. Weight: 0.210 g. Moisture sensitivity level: J-STD-020 Level 1.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Input current terminal | Connected to source side (e.g., battery positive or switch node); accepts 5A continuous forward current |
| Cathode | Output current terminal | Connected to load or ground return; polarity marked by molded band; carries full forward current with 0.75V drop |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualified | Validated for automotive powertrain and body electronics per stress test requirements (HTOL, TC, HTRB) |
| Guard ring structure | Prevents edge breakdown at rated VRRM, ensuring stable reverse blocking in noisy 12V/48V systems |
| Low VF / high IF ratio | Delivers 5A output with minimal self-heating-critical for sealed LED headlamp and ADAS ECU designs |
| J-STD-020 Level 1 MSL | Zero bake requirement before reflow; compatible with standard SMT assembly lines without moisture preconditioning |
Applications
| Automotive DC/DC Converters | Reverse Battery Protection |
|---|---|
Use Scenario: Step-down conversion from 12V/48V battery to 3.3V/5V rails in infotainment and domain controllers. IC Role / Device Role / Timing Role: Freewheeling diode in synchronous or asynchronous buck topology. Use Value: 0.75V VF reduces conduction loss by ~35% vs. comparable 60V Si diodes, improving thermal margin at 5A load. |
Use Scenario: Preventing damage during incorrect battery connection in telematics and gateway modules. IC Role / Device Role / Timing Role: Series-blocking diode in main power input path. Use Value: 120A IFSM withstands momentary short-circuit currents during miswiring events without failure. |
| LED Headlamp Drivers | Start-Stop System Rectification |
Use Scenario: High-current supply path for adaptive front-lighting systems with PWM dimming. IC Role / Device Role / Timing Role: Output rectifier in boost or buck-boost LED driver stage. Use Value: 150°C TJ max and 13°C/W RθJL allow reliable 5A operation inside thermally constrained lamp housings. |
Use Scenario: Maintaining stable MCU and sensor power during engine cranking voltage dips. IC Role / Device Role / Timing Role: Hold-up rectifier in auxiliary power supply for start-stop ECUs. Use Value: AEC-Q101 qualification ensures functional reliability across 1,000+ cold-crank cycles with <100ms 3V transients. |
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-50SQ060 | Same 60V VRRM, 5A IF, but TO-277 package (RθJA = 60°C/W vs. SK56CH's 53°C/W); VF = 0.72V @ 5A | Higher thermal resistance requires larger copper area; not AEC-Q101 qualified | Select when legacy TO-277 footprint exists and automotive qualification is not required |
| ON Semiconductor SB560 | 60V VRRM, 5A IF, DO-214AA (SMA) package; VF = 0.72V @ 5A; no AEC-Q101 status stated | Smaller package limits power handling; lower surge rating (100A vs. 120A) | Select for cost-sensitive non-automotive consumer power supplies where space is critical |
Compared with VS-50SQ060 and SB560, the SK56CH provides superior thermal performance in DO-214AB, AEC-Q101 validation for automotive use, and higher surge robustness-making it the preferred choice for under-hood DC/DC and reverse-protection circuits requiring long-term reliability.
Availability
SK56CH is available at Aetrix Electronics and suitable for automotive DC/DC converters, reverse battery protection circuits, and LED headlamp drivers requiring stable component supply and AEC-Q101 compliance.
Supply support for SK56CH 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 automotive, industrial, and computing markets since 1979.
The SK56CH belongs to TSC's AEC-Q101-qualified Schottky rectifier family designed specifically for high-reliability 12V–48V automotive power systems, emphasizing low VF, high surge tolerance, and robust thermal behavior in surface-mount packages.
FAQ
What is the maximum junction temperature rating for the SK56CH?
The SK56CH has a maximum junction temperature (TJ) of +150°C, verified per absolute maximum ratings. This allows continuous 5A operation in ambient temperatures up to 105°C when mounted on a 16mm × 16mm copper pad, making it suitable for under-hood automotive environments where thermal management is constrained. The SK56CH must not exceed this limit to maintain reliability and AEC-Q101 compliance.
Is the SK56CH pin-compatible with other SK5xCH series devices?
Yes-the entire SK52CH through SK520CH series shares identical DO-214AB (SMC) package dimensions, anode/cathode pinout, and solder pad layout. Engineers may substitute SK56CH for SK55CH or SK59CH in existing designs without PCB changes, provided voltage and thermal requirements align. The SK56CH remains electrically and mechanically interchangeable within the family.
Does the SK56CH meet RoHS and halogen-free requirements?
Yes-the SK56CH is RoHS compliant and halogen-free per manufacturer documentation, using molding compound meeting UL 94V-0 flammability rating and matte tin-plated leads compliant with J-STD-002. These attributes support environmental compliance in automotive and industrial end equipment, and the SK56CH carries no substance restrictions beyond EU RoHS Annex II limits.
What is the reverse leakage current specification for the SK56CH at elevated temperature?
At rated 60V reverse voltage and 125°C junction temperature, the SK56CH exhibits a maximum reverse leakage current (IR) of 10 mA. At 150°C, leakage rises to 5 mA-lower than lower-voltage variants due to optimized doping. This controlled leakage ensures minimal standby power loss in always-on automotive modules powered by the SK56CH.
How does the guard ring feature improve reliability in automotive applications?
The guard ring in the SK56CH prevents premature edge breakdown under high dv/dt transients common in automotive switching circuits. By distributing electric field stress away from the active junction periphery, it maintains stable 60V reverse blocking during load dump or alternator ripple events-directly supporting the SK56CH's AEC-Q101 qualification and long-term reliability in harsh electrical environments.
SK56CH 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):
- 60 V
- Current - Average Rectified (Io):
- 5A
- Voltage - Forward (Vf) (Max) @ If:
- 750 mV @ 5 A
- Speed:
- Fast Recovery =< 500ns, > 200mA (Io)
- Reverse Recovery Time (trr):
- -
- Current - Reverse Leakage @ Vr:
- 500 µA @ 60 V
- Capacitance @ Vr, F:
- -
- Grade:
- Automotive
- Qualification:
- AEC-Q101
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- DO-214AB (SMC)
- Operating Temperature - Junction:
- -55°C ~ 150°C
SK56CH FAQ
1.How can I place an order for SK56CH through Aetrix?
Please submit a Request for Quotation (RFQ) for SK56CH 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 SK56CH reliable?
The price and inventory of SK56CH are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SK56CH is usually 5 days.
3.What payment methods are accepted for SK56CH?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SK56CH transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SK56CH?
SK56CH orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SK56CH 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 SK56CH?
For technical support, including SK56CH datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SK56CH requirements.
6.How does Aetrix verify that SK56CH is sourced from the original manufacturer or authorized distributors?
All SK56CH 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 SK56CH meets industry standards.
7.What is the process for return or replacement of SK56CH?
All SK56CH units undergo pre-shipment inspection (PSI). If there is an issue with SK56CH, 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 SK56CH part is unused and in its original packaging.
Return procedure for SK56CH:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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