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Taiwan Semiconductor Corporation SK515CH
- Part No.:
- SK515CH
- Manufacturer:
- Taiwan Semiconductor Corporation
- Category:
- Single Diodes
- Package:
- DO-214AB, SMC
- Datasheet:
-
SK515CH.pdf
- Description:
- DIODE SCHOTTKY 150V 5A DO214AB
- Quantity:
- Payment:
- Shipping:
Inventory:6,337
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Product details
Overview
SK515CH from Taiwan Semiconductor is a 5A, 150V Schottky barrier surface-mount rectifier in DO-214AB (SMC) package, designed for low-loss DC/DC conversion and reverse battery protection in automotive lighting systems. It features 0.95V forward voltage at 5A/25°C, 0.3mA reverse leakage at 150V/25°C, and 120A surge capability.
For engineers reviewing the SK515CH datasheet, SK515CH pinout, SK515CH application, or SK515CH equivalent, key selection criteria include its AEC-Q101 qualification, junction-to-lead thermal resistance of 13°C/W, moisture sensitivity level 1 rating, and suitability for high-frequency freewheeling in constrained automotive PCB layouts.
Technical Context
The SK515CH operates as a single-die Schottky rectifier with guard ring overvoltage protection and matte tin-plated leads compliant with J-STD-002 solderability. Its 150V VRRM and 10,000 V/µs dV/dt rating support robust operation in noisy automotive power rails.
Thermal performance is characterized by RθJL = 13°C/W and RθJA = 53°C/W on a 16mm × 16mm Cu pad test board. The device maintains stable reverse leakage ≤5mA up to 125°C junction temperature, enabling reliable use in under-hood environments.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VRRM | 150 V - Maximum repetitive reverse voltage; defines safe blocking capability in 12–48V automotive systems with transient spikes. |
| IF | 5 A - Continuous forward current; supports sustained power delivery in compact DC/DC converters without forced cooling. |
| VF @ 5A, 25°C | 0.95 V - Low conduction loss; reduces power dissipation to ~4.75W at full load, easing thermal management. |
| IR @ 150V, 25°C | 0.3 mA - Minimal reverse leakage; preserves system efficiency during standby and sleep modes. |
| IFSM | 120 A - Peak surge current (8.3ms half-sine); withstands load dump and jump-start transients per ISO 7637-2. |
| TJ max | 150 °C - Maximum junction temperature; enables operation in high-ambient under-hood locations. |
| RθJL | 13 °C/W - Junction-to-lead thermal resistance; allows direct heat transfer to PCB copper, supporting compact heatsinking. |
Pinout & Package
Package: DO-214AB (SMC), surface-mount plastic case with cathode band polarity indicator; dimensions 7.75 × 6.25 × 2.45 mm (L × W × H); weight ≈ 0.210 g.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Forward current input terminal | Connected to source-side of switching node; requires low-inductance layout to minimize switching losses. |
| Cathode | Forward current output / reverse voltage reference terminal | Marked by molded band; ties to ground or return path; must maintain clean low-impedance connection for EMI control. |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualified | Validated for automotive-grade reliability including temperature cycling, humidity bias, and mechanical shock testing. |
| Guard ring structure | Enhances edge termination robustness against localized overvoltage stress and improves long-term stability in transient-prone circuits. |
| Moisture sensitivity level 1 | Eliminates bake requirements before reflow; compatible with standard SMT assembly lines without special handling. |
| Halogen-free & RoHS compliant | Meets automotive environmental compliance mandates (e.g., ELV, IMDS) and supports lead-free reflow profiles up to 260°C. |
| High IFSM/IF ratio (24×) | Enables robust fault tolerance-survives repeated 120A surges while maintaining 5A continuous rating for cost-effective system protection. |
Applications
| Automotive LED Headlamp Driver | 12V Automotive DC/DC Buck Converter |
|---|---|
Use Scenario: High-brightness LED array powered from vehicle battery with PWM dimming and thermal foldback. IC Role / Device Role / Timing Role: Freewheeling diode in synchronous buck topology, conducting during low-side switch off-time. Use Value: 0.95V VF minimizes conduction loss at 5A peak current, improving driver efficiency by >2% versus higher-VF alternatives. |
Use Scenario: Step-down converter supplying 5V/3A to infotainment microcontroller from 12V rail. IC Role / Device Role / Timing Role: Output rectifier in non-synchronous buck stage, handling continuous 5A output current. Use Value: 13°C/W RθJL enables direct thermal coupling to PCB copper, reducing need for external heatsinks in space-constrained modules. |
| Reverse Battery Protection Circuit | Start-Stop System Power Path |
Use Scenario: Preventing damage when battery terminals are accidentally reversed during service or jump-start. IC Role / Device Role / Timing Role: Series-connected Schottky diode blocking reverse polarity current flow. Use Value: 150V VRRM exceeds ISO 7637-2 pulse 5a (110V) requirement, ensuring fail-safe blocking during reverse connection events. |
Use Scenario: Managing power routing between starter battery and auxiliary AGM battery in engine start-stop systems. IC Role / Device Role / Timing Role: OR-ing diode in dual-battery power path, enabling seamless switchover during cranking. Use Value: 0.3mA IR at 25°C limits quiescent drain to <1µA per diode, preserving battery charge during extended vehicle-off periods. |
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-50SQ150 | Same 150V VRRM, 5A IF, but VF = 0.89V @ 5A; TO-277 package (smaller footprint, no leads). | Lacks AEC-Q101 qualification; not validated for automotive temperature cycling or humidity bias stress. | Preferred where board space is critical and automotive qualification is not required. |
| ON Semiconductor SB5150 | 150V VRRM, 5A IF, VF = 0.92V @ 5A; DO-214AB package; AEC-Q101 qualified. | Slightly lower IFSM (100A vs. 120A); RθJL = 15°C/W (vs. 13°C/W). | Balances qualification and thermal performance where 20A surge margin is acceptable. |
Compared with VS-50SQ150 and SB5150, the SK515CH delivers superior surge robustness (120A), best-in-class thermal resistance (13°C/W), and full AEC-Q101 validation-making it optimal for safety-critical automotive power paths where reliability under transient stress is non-negotiable.
Availability
SK515CH is available at Aetrix Electronics and suitable for automotive LED lighting, start-stop power management, and 12V/24V DC/DC converters requiring stable component supply across multi-year production cycles.
Supply support for SK515CH 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 consumer markets since 1979.
The SK515CH belongs to TSC's AEC-Q101-qualified Schottky rectifier family, engineered specifically for high-reliability automotive power conversion where low VF, high surge tolerance, and thermal resilience are mandatory.
FAQ
What is the maximum junction temperature rating for the SK515CH?
The SK515CH has a maximum junction temperature (TJ) rating of +150°C. This specification allows the device to operate reliably in under-hood automotive environments where ambient temperatures can exceed 105°C. Derating curves in the datasheet confirm usable current capacity down to 2.5A at 150°C ambient with appropriate PCB copper area, and the SK515CH maintains stable electrical characteristics-including reverse leakage ≤5mA at 125°C-within this range.
Is the SK515CH suitable for reverse battery protection in 24V commercial vehicles?
Yes, the SK515CH is suitable for reverse battery protection in 24V commercial vehicles. With a 150V VRRM, it exceeds the ISO 7637-2 Pulse 5a requirement (110V) for 24V systems and provides sufficient margin against load dump transients. Its AEC-Q101 qualification, 120A IFSM, and guard ring structure ensure robust blocking behavior during reverse connection events, making the SK515CH a validated choice for heavy-duty truck and bus electronic modules.
Does the SK515CH have halogen-free and RoHS-compliant construction?
Yes, the SK515CH uses halogen-free molding compound and complies with RoHS Directive 2011/65/EU. This is explicitly stated in the "Features" section of the official datasheet (Version C2311), and the device carries the "G" marking code indicating green compound. These attributes meet automotive environmental standards including ELV and IMDS reporting requirements, and support compatibility with lead-free reflow soldering profiles up to 260°C.
What is the forward voltage drop of the SK515CH at rated current and temperature?
The SK515CH exhibits a typical forward voltage (VF) of 0.95V at 5A forward current and 25°C junction temperature, as specified in the Electrical Specifications table. At elevated temperatures (e.g., 125°C), VF decreases slightly due to Schottky diode physics, remaining below 0.88V. This low, stable VF directly reduces conduction losses in the SK515CH, enabling higher efficiency in high-current DC/DC stages compared to higher-VF alternatives.
How does the SK515CH's thermal resistance compare to similar Schottky rectifiers in DO-214AB packages?
The SK515CH achieves a junction-to-lead thermal resistance (RθJL) of 13°C/W, measured on a 16mm × 16mm Cu pad test board-among the lowest in its class. For comparison, industry-standard equivalents typically range from 14.5°C/W to 16°C/W. This 10–15% improvement enhances thermal coupling to the PCB, allowing the SK515CH to sustain higher continuous current or operate at lower junction temperatures in thermally constrained designs such as LED driver modules.
SK515CH 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):
- 150 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 @ 150 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
SK515CH FAQ
1.How can I place an order for SK515CH through Aetrix?
Please submit a Request for Quotation (RFQ) for SK515CH 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 SK515CH reliable?
The price and inventory of SK515CH are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SK515CH is usually 5 days.
3.What payment methods are accepted for SK515CH?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SK515CH transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SK515CH?
SK515CH orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SK515CH 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 SK515CH?
For technical support, including SK515CH datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SK515CH requirements.
6.How does Aetrix verify that SK515CH is sourced from the original manufacturer or authorized distributors?
All SK515CH 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 SK515CH meets industry standards.
7.What is the process for return or replacement of SK515CH?
All SK515CH units undergo pre-shipment inspection (PSI). If there is an issue with SK515CH, 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 SK515CH part is unused and in its original packaging.
Return procedure for SK515CH:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SK515CH Tags
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