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Taiwan Semiconductor Corporation SK83CH
- Part No.:
- SK83CH
- Manufacturer:
- Taiwan Semiconductor Corporation
- Category:
- Single Diodes
- Package:
- DO-214AB, SMC
- Datasheet:
-
SK83CH.pdf
- Description:
- DIODE SCHOTTKY 30V 8A DO214AB
- Quantity:
- Payment:
- Shipping:
Inventory:5,804
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Product details
Overview
SK83CH from Taiwan Semiconductor is a 30 V, 8 A Schottky barrier rectifier in DO-214AB (SMC) package, designed for high-efficiency DC/DC conversion and freewheeling in automotive lighting and reverse battery protection circuits. It features 150 A surge capability, 0.55 V forward voltage at 8 A/25°C, and AEC-Q101 qualification.
For engineers reviewing the SK83CH datasheet, SK83CH pinout, SK83CH application, or SK83CH equivalent, key selection criteria include its 30 V repetitive peak reverse voltage, 125°C maximum junction temperature, low VF for thermal efficiency, and DO-214AB mechanical compatibility with automated SMT assembly.
Technical Context
The SK83CH operates as a single-die Schottky rectifier with guard ring structure for over-voltage robustness and meets JESD201 Class 2 whisker resistance. Its 10,000 V/µs dV/dt rating supports fast-switching topologies without parasitic turn-on.
Thermally, it delivers 20°C/W junction-to-ambient resistance in standard PCB mounting, enabling sustained 8 A conduction at ≤125°C junction temperature under typical layout conditions. Moisture sensitivity level is rated at J-STD-020 Level 1.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VRRM | 30 V - Maximum repetitive reverse blocking voltage; defines safe operating range in 24 V automotive systems |
| IF | 8 A - Continuous forward current rating; supports high-current DC/DC output stages without derating at TA ≤ 75°C |
| VF @ 8A, 25°C | 0.55 V - Low conduction loss; reduces power dissipation to <4.4 W at full load |
| IFSM | 150 A - Non-repetitive surge current; withstands inrush and fault transients in automotive power rails |
| TJ max | 125°C - Maximum junction temperature; enables operation in engine bay environments with adequate heatsinking |
| IR @ 30V, 100°C | 15 mA - Reverse leakage at elevated temperature; impacts standby power in always-on vehicle modules |
| RθJA | 20°C/W - Thermal resistance; requires ≥1.5 cm² copper pour for 8 A continuous operation at ambient ≤ 70°C |
Pinout & Package
Package: DO-214AB (SMC), surface-mount, cathode-indicated by band, matte tin-plated leads, UL 94V-0 molding compound, 0.210 g typical weight.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Forward current input | Connected to switching node or input rail; low-resistance path minimizes conduction loss |
| Cathode | Forward current output / reverse-blocking terminal | Connected to output capacitor or load; polarity band ensures correct orientation during placement |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualified | Validated for automotive-grade reliability including temperature cycling, HTRB, and ESD per stress test requirements |
| Guard ring structure | Enhances edge termination robustness, improving VRRM consistency and reducing field-induced avalanche risk |
| Moisture sensitivity level 1 | Zero bake requirement before reflow; compatible with standard SMT lines without dry-pack handling |
| Halogen-free (IEC 61249-2-21) | Meets automotive environmental compliance mandates without compromising thermal or electrical performance |
| High dV/dt immunity (10,000 V/µs) | Prevents false triggering in high-di/dt synchronous rectifier or flyback applications |
Applications
| Automotive LED Headlamp Driver | 12 V → 5 V Automotive DC/DC 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 buck converter stage, conducting during low-side switch off-time. Use Value: 0.55 V VF minimizes heat generation in confined headlamp housing; AEC-Q101 ensures 15-year field life under thermal cycling. | Use Scenario: Power supply for infotainment MCU and CAN transceiver in start-stop vehicles. IC Role / Device Role / Timing Role: Output rectifier in synchronous or quasi-resonant flyback topology. Use Value: 150 A IFSM handles cold-crank surges; 30 V VRRM provides margin above nominal 28 V alternator output. |
| Reverse Battery Protection Circuit | Low-Voltage Inverter for HVAC Blower |
Use Scenario: Preventing damage when jumper cables are incorrectly connected during roadside assistance. IC Role / Device Role / Timing Role: Series-connected Schottky in high-side configuration, blocking reverse polarity while conducting forward. Use Value: Low VF avoids excessive voltage drop in 12 V power path; DO-214AB footprint supports high-current PCB traces. | Use Scenario: Variable-speed blower motor drive using 24 V DC input and 3-phase inverter bridge. IC Role / Device Role / Timing Role: Freewheeling diode across each IGBT gate driver supply rail. Use Value: 125°C TJ max allows operation near hot motor housing; 20°C/W RθJA enables compact heatsinkless layout. |
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-8EWH03FN-M3/45 | Same 30 V VRRM, 8 A IF, but TO-277 package (smaller footprint, higher RθJA = 25°C/W) | Better suited for space-constrained modules where thermal mass is limited | Select if board area is critical and thermal margin can be managed via forced air or copper flooding |
| ON Semiconductor MBR830CT | Dual common-cathode configuration, 30 V per diode, 8 A total; requires different PCB layout | Used in dual-output or redundant rectification schemes, not direct single-diode replacement | Choose only when dual-channel functionality is required; not a drop-in substitute for SK83CH |
Compared with VS-8EWH03FN-M3/45, SK83CH offers lower thermal resistance and proven AEC-Q101 qualification for under-hood use; versus MBR830CT, SK83CH provides simpler single-diode integration and tighter VF distribution across production lots.
Availability
SK83CH is available at Aetrix Electronics and suitable for automotive lighting, DC/DC converters, and reverse battery protection requiring stable component supply across extended temperature and high-reliability environments.
Supply support for SK83CH 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 SK8xCH series was developed specifically for AEC-Q101-compliant automotive power conversion, emphasizing low VF, high surge tolerance, and robust packaging for under-hood deployment.
FAQ
What is the maximum junction temperature rating for SK83CH?
The SK83CH has a maximum junction temperature (TJ max) of 125°C, verified per AEC-Q101 stress testing. This rating applies under continuous 8 A forward conduction with proper PCB thermal design. Operation beyond this limit risks parametric shift and long-term reliability degradation. Always verify actual TJ using thermal simulation or IR measurement in final layout.
Is SK83CH pin-compatible with SK82CH or SK84CH?
Yes - SK83CH shares identical DO-214AB (SMC) package dimensions, pinout, and solder pad layout with SK82CH and SK84CH. Only VRRM differs (20 V, 30 V, 40 V respectively); all share same VF, IFSM, RθJA, and thermal derating curves. Board-level substitution is mechanically and electrically valid when voltage margin permits.
Does SK83CH require moisture baking before reflow soldering?
No - SK83CH is rated at Moisture Sensitivity Level (MSL) 1 per J-STD-020, meaning it may be stored indefinitely at ≤30°C/60% RH and placed directly into reflow without pre-bake. This simplifies SMT line logistics and eliminates yield loss from moisture-related popcorning.
What is the forward voltage specification for SK83CH at 8 A and 125°C junction temperature?
The datasheet specifies VF only at 25°C (0.55 V max). At 125°C, VF decreases approximately 2 mV/°C - extrapolating yields ~0.35 V at 125°C. However, TSC does not guarantee this value; system-level validation is required for high-temperature conduction accuracy. SK83CH's thermal stability ensures consistent low VF across its full operating range.
Can SK83CH be used in place of a standard PN junction rectifier in a 12 V automotive circuit?
Yes - SK83CH replaces PN rectifiers in 12 V systems where efficiency and speed matter. Its Schottky architecture eliminates minority-carrier storage delay, enabling faster switching and lower VF (0.55 V vs. ~0.9 V for PN). This reduces conduction loss by >40% and eliminates reverse recovery noise, making SK83CH ideal for high-frequency DC/DC and EMI-sensitive applications.
SK83CH 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):
- 30 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 @ 30 V
- Capacitance @ Vr, F:
- -
- Grade:
- Automotive
- Qualification:
- AEC-Q101
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- DO-214AB (SMC)
- Operating Temperature - Junction:
- -55°C ~ 125°C
SK83CH FAQ
1.How can I place an order for SK83CH through Aetrix?
Please submit a Request for Quotation (RFQ) for SK83CH 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 SK83CH reliable?
The price and inventory of SK83CH are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SK83CH is usually 5 days.
3.What payment methods are accepted for SK83CH?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SK83CH transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SK83CH?
SK83CH orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SK83CH 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 SK83CH?
For technical support, including SK83CH datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SK83CH requirements.
6.How does Aetrix verify that SK83CH is sourced from the original manufacturer or authorized distributors?
All SK83CH 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 SK83CH meets industry standards.
7.What is the process for return or replacement of SK83CH?
All SK83CH units undergo pre-shipment inspection (PSI). If there is an issue with SK83CH, 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 SK83CH part is unused and in its original packaging.
Return procedure for SK83CH:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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