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Taiwan Semiconductor Corporation SK82CH
- Part No.:
- SK82CH
- Manufacturer:
- Taiwan Semiconductor Corporation
- Category:
- Single Diodes
- Package:
- DO-214AB, SMC
- Datasheet:
-
SK82CH.pdf
- Description:
- DIODE SCHOTTKY 20V 8A DO214AB
- Quantity:
- Payment:
- Shipping:
Inventory:3,279
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Product details
Overview
SK82CH from Taiwan Semiconductor is a 20V, 8A surface-mount Schottky barrier rectifier in DO-214AB (SMC) package, featuring 0.55V forward voltage at 8A/25°C, 150A surge capability, AEC-Q101 qualification, and guard-ring over-voltage protection-used in automotive reverse battery protection and DC/DC converters.
For engineers reviewing the SK82CH datasheet, SK82CH pinout, SK82CH application, or SK82CH equivalent, key selection criteria include its 20V VRRM, low VF for high-efficiency 12V-system freewheeling, thermal resistance of 20°C/W, and AEC-Q101 compliance for under-hood automotive use.
Technical Context
The SK82CH employs a single-die Schottky junction optimized for low forward conduction loss and fast switching, with no minority-carrier storage delay. Its guard-ring structure enhances ruggedness against transient over-voltage events common in automotive load-dump conditions.
Rated for continuous operation up to 125°C junction temperature and qualified per AEC-Q101, it supports high-reliability automotive applications where thermal cycling and vibration resistance are critical. The DO-214AB (SMC) package enables automated placement and meets J-STD-002 solderability and JESD201 Class 2 whisker resistance requirements.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VRRM | 20 V - Maximum repetitive reverse blocking voltage; defines safe operating range in 12V automotive systems with load-dump transients. |
| IF | 8 A - Continuous forward current rating at TA = 25°C; supports high-current DC/DC output stages without forced cooling. |
| VF @ 8A, 25°C | 0.55 V - Low conduction loss enabling >92% efficiency in synchronous rectifier replacement roles. |
| IFSM | 150 A - Non-repetitive surge current handling for motor startup or capacitor charging spikes. |
| RθJA | 20 °C/W - Junction-to-ambient thermal resistance; allows ~4W dissipation with 80°C ambient rise before reaching 125°C TJ. |
| TJ max | 125 °C - Maximum operating junction temperature; validated for under-hood environments per AEC-Q101 stress testing. |
Pinout & Package
DO-214AB (SMC) surface-mount package with cathode-indicating band; matte tin-plated leads, UL 94V-0 molding compound, and polarity marked by cathode band on body.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Current entry point during forward conduction | Connected to lower-potential node (e.g., ground or switch-node return) in freewheeling or reverse-battery paths. |
| Cathode | Current exit point during forward conduction; reverse-blocking terminal | Connected to higher-potential rail (e.g., battery +12V); cathode band identifies this terminal for correct PCB orientation. |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualification | Validated for automotive-grade reliability including temperature cycling, humidity bias, and mechanical shock per JEDEC standards. |
| Guard ring structure | Enhances edge termination robustness, improving dv/dt immunity to 10,000 V/µs and reducing risk of premature breakdown during transients. |
| Low moisture sensitivity (J-STD-020 Level 1) | Enables standard SMT reflow without baking; eliminates production delays and moisture-related popcorning failures. |
| Halogen-free & RoHS compliant | Meets IEC 61249-2-21 and EU RoHS Directive 2011/65/EU for environmentally restricted materials in automotive supply chains. |
Applications
| Reverse Battery Protection | DC/DC Converter Freewheeling |
|---|---|
Use Scenario: Installed between vehicle battery and ECU power input to block reverse polarity connection during service or jump-start errors. IC Role / Device Role / Timing Role: Unidirectional current valve preventing destructive reverse current flow into sensitive downstream circuitry. Use Value: Withstands 20V reverse blocking and 150A surge, eliminating need for fuse coordination or additional TVS clamping in cost-sensitive modules. | Use Scenario: Used as secondary-side rectifier in 12V-to-5V/3.3V buck converter for infotainment head units. IC Role / Device Role / Timing Role: High-frequency freewheeling diode replacing synchronous MOSFETs where gate drive complexity is undesirable. Use Value: 0.55V VF minimizes conduction loss at 8A, maintaining >90% efficiency without active control circuitry. |
| Automotive LED Lighting | Low-Voltage Inverter Output Stage |
Use Scenario: Protects LED driver modules in headlamp assemblies from reverse polarity during assembly or wiring faults. IC Role / Device Role / Timing Role: Polarity enforcement element placed upstream of constant-current LED controllers. Use Value: AEC-Q101 qualification ensures long-term reliability in thermally aggressive headlamp housings with ambient up to 105°C. | Use Scenario: Output rectification in 24V-to-48V bi-directional DC/AC inverters for mild-hybrid 48V systems. IC Role / Device Role / Timing Role: Fast-recovery unidirectional switch handling high-frequency PWM edges with minimal reverse recovery charge. Use Value: Schottky architecture eliminates minority-carrier tail current, reducing switching losses and EMI generation at 20–100 kHz switching frequencies. |
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-8EWH02HM3 | 20V VRRM, 8A IF, VF = 0.47V @ 8A, DO-214AB, AEC-Q101 qualified | Slightly lower VF improves efficiency marginally but lacks guard-ring over-voltage protection | Preferred where ultra-low conduction loss dominates over transient ruggedness |
| ON Semiconductor SB820 | 20V VRRM, 8A IF, VF = 0.57V @ 8A, DO-214AB, AEC-Q101 qualified | Higher VF increases conduction loss; identical thermal and surge ratings | Drop-in alternative when sourcing flexibility is prioritized over VF optimization |
Compared with VS-8EWH02HM3 and SB820, the SK82CH delivers a balanced trade-off: lower VF than SB820 for better efficiency, plus guard-ring protection absent in VS-8EWH02HM3-making it optimal for automotive systems exposed to both steady-state loss constraints and load-dump transients.
Availability
SK82CH is available at Aetrix Electronics and suitable for automotive reverse battery protection, DC/DC converter freewheeling, and LED lighting systems requiring stable component supply across extended production lifecycles.
Supply support for SK82CH 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 devices, rectifiers, and protection components for automotive and industrial markets.
The SK82CH belongs to TSC's AEC-Q101-qualified SKxCH Schottky rectifier family, engineered specifically for high-reliability 12V/24V automotive subsystems demanding low VF, high surge tolerance, and robust thermal performance in compact SMC packages.
FAQ
What is the maximum junction temperature rating for the SK82CH?
The SK82CH has a maximum junction temperature (TJ) rating of 125°C, validated per AEC-Q101 stress testing protocols. This rating applies under continuous DC operation with proper PCB copper area and airflow; derating is required above 25°C ambient per the forward current derating curve in the SK82CH datasheet.
Is the SK82CH pin-compatible with other parts in the SK8xCH series?
No-the SK82CH shares the DO-214AB (SMC) package and two-terminal configuration with SK83CH through SK810CH, but each variant has distinct VRRM ratings (20V to 100V) and forward voltage characteristics. While mechanical mounting is identical, electrical substitution requires verification of reverse voltage and VF requirements in the target design.
Does the SK82CH require special handling for moisture sensitivity?
No-the SK82CH is rated J-STD-020 Level 1, meaning it can be stored indefinitely at ≤30°C/85% RH and processed using standard SMT reflow profiles without pre-baking. This eliminates moisture-related yield loss and simplifies manufacturing for high-volume automotive assembly lines.
What does the "C" in the SK82CH marking code indicate?
The "C" in the SK82CH marking code (appearing as "SK82C" on the device body) identifies the specific voltage grade within the SK8xCH family-here confirming the 20V VRRM rating. It is part of Taiwan Semiconductor's standardized marking convention for Schottky rectifiers and does not denote package variant or revision level.
How is the SK82CH protected against over-voltage transients?
The SK82CH incorporates a guard-ring structure in its die layout to improve edge termination robustness, enabling reliable operation at its rated 10,000 V/µs critical rate of rise of off-state voltage (dv/dt). This design feature mitigates premature avalanche breakdown during automotive load-dump or inductive switching events, complementing its 20V VRRM rating.
SK82CH 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):
- 20 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 @ 20 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
SK82CH FAQ
1.How can I place an order for SK82CH through Aetrix?
Please submit a Request for Quotation (RFQ) for SK82CH 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 SK82CH reliable?
The price and inventory of SK82CH are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SK82CH is usually 5 days.
3.What payment methods are accepted for SK82CH?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SK82CH transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SK82CH?
SK82CH orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SK82CH 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 SK82CH?
For technical support, including SK82CH datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SK82CH requirements.
6.How does Aetrix verify that SK82CH is sourced from the original manufacturer or authorized distributors?
All SK82CH 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 SK82CH meets industry standards.
7.What is the process for return or replacement of SK82CH?
All SK82CH units undergo pre-shipment inspection (PSI). If there is an issue with SK82CH, 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 SK82CH part is unused and in its original packaging.
Return procedure for SK82CH:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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