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Taiwan Semiconductor Corporation SK82CHM6G
- Part No.:
- SK82CHM6G
- Manufacturer:
- Taiwan Semiconductor Corporation
- Category:
- Single Diodes
- Package:
- DO-214AB, SMC
- Datasheet:
-
SK82CHM6G.pdf
- Description:
- DIODE SCHOTTKY 20V 8A DO214AB
- Quantity:
- Payment:
- Shipping:
Inventory:8,863
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Product details
Overview
SK82CHM6G from Taiwan Semiconductor is a single-die, 8A, 20V Schottky barrier surface-mount rectifier in DO-214AB (SMC) package, featuring low forward voltage (0.55 V at 8 A, 25°C), 150 A surge capability, and junction temperature rating up to +125°C. It is used in high-efficiency switching mode power supplies and AC/DC adapters where low conduction loss and fast recovery are critical.
For engineers reviewing the SK82CHM6G datasheet, SK82CHM6G pinout, SK82CHM6G application, or SK82CHM6G equivalent, key selection criteria include repetitive peak reverse voltage (20 V), thermal resistance (20 °C/W), moisture sensitivity level (J-STD-020 Level 1), RoHS/halogen-free compliance, and cathode-band polarity marking for reliable board-level assembly.
Technical Context
This Schottky rectifier operates with zero minority-carrier storage, enabling ultrafast switching and negligible reverse recovery time. Its guard ring structure enhances ruggedness against transient overvoltage events, while the matte tin-plated leads ensure solderability per J-STD-002 and whisker resistance per JESD 201 Class 2.
The device is rated for continuous forward current of 8 A at case temperature ≤ 75°C, derating linearly to zero at 125°C junction temperature. Reverse leakage remains ≤ 0.5 mA at 25°C and ≤ 15 mA at 100°C under rated 20 V reverse bias, supporting stable operation in thermally constrained converter designs.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VRRM | 20 V - Maximum non-repetitive reverse blocking voltage; defines safe operating range in flyback/clamp circuits |
| IF | 8 A - Continuous average forward current at TC = 75°C; determines heatsink sizing in SMPS output rectification |
| IFSM | 150 A - Peak non-repetitive surge current (8.3 ms half-sine); withstands inrush and fault transients without failure |
| VF | 0.55 V @ 8 A, 25°C - Low conduction loss directly reduces power dissipation and improves system efficiency |
| RθJA | 20 °C/W - Junction-to-ambient thermal resistance on standard FR-4 PCB; enables thermal modeling for layout validation |
| TJ max | +125°C - Maximum junction temperature; sets upper limit for thermal design margin in sealed enclosures |
| MSL | Level 1 (per J-STD-020) - No floor life limitation; supports unlimited exposure before reflow soldering |
Pinout & Package
Package: DO-214AB (SMC), surface-mount, single-anode/single-cathode configuration. Cathode identified by molded band on body.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode (lead 1) | Forward current entry point | Connected to transformer secondary or switch node; must handle full 8 A DC + ripple |
| Cathode (lead 2) | Forward current exit / reverse blocking terminal | Marked with band; ties to output capacitor negative or common rail; blocks 20 V reverse during off-state |
Key Features
| Feature | Design Value |
|---|---|
| Guard ring structure | Improves dv/dt ruggedness to 10,000 V/µs, preventing premature breakdown during fast-switching transitions |
| Low VF Schottky junction | Reduces conduction loss by ~40% vs. comparable PN rectifiers, lowering thermal stress in compact adapters |
| Matte tin-plated leads | Ensures consistent wetting and joint integrity per J-STD-002, critical for automated SMT line yield |
| UL 94V-0 molding compound | Meets flame-retardancy requirements for end-equipment safety certifications (e.g., UL 62368-1) |
| Halogen-free (IEC 61249-2-21) | Supports environmental compliance for EU RoHS and China RoHS without compromising mechanical robustness |
Applications
| AC/DC Adapters | LED Drivers |
|---|---|
Use Scenario: Secondary-side rectification in 12–24 W wall-mounted USB-C PD adapters with <15 mm height constraint. IC Role / Device Role / Timing Role: Primary output rectifier replacing PN diodes to minimize heat buildup and meet CoC Tier 2 efficiency targets. Use Value: 0.55 V forward drop cuts conduction loss by >0.4 W vs. legacy 1N5822, enabling passive cooling and smaller heatsinks. | Use Scenario: Constant-current output rectification in isolated offline LED drivers for commercial downlights (30–50 Vout, 350–700 mA). IC Role / Device Role / Timing Role: High-frequency synchronous rectifier alternative in quasi-resonant flyback topologies operating at 65–130 kHz. Use Value: Near-zero reverse recovery eliminates switching spikes, reducing EMI filter component count and easing CISPR-15 compliance. |
| Industrial SMPS | DC-DC Converter Modules |
Use Scenario: Output rectification in 48 V input, 12 V/10 A industrial power modules deployed in control cabinets with ambient up to 70°C. IC Role / Device Role / Timing Role: Main secondary-side power diode handling continuous 8 A load with minimal derating due to 125°C TJ rating. Use Value: 20 °C/W RθJA allows direct mounting on copper pour without thermal vias, simplifying 4-layer PCB stackup. | Use Scenario: Input protection and reverse-polarity blocking in 5–12 V input, 3.3 V/5 A non-isolated buck modules for FPGA I/O rails. IC Role / Device Role / Timing Role: Low-loss series diode ensuring unidirectional current flow while minimizing voltage drop across input path. Use Value: 0.55 V VF preserves >98% of input voltage headroom, avoiding brownout in noise-sensitive digital subsystems. |
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-8EWH02HM3/86A | Same DO-214AB package, 20 V VRRM, but rated 8 A at TC = 115°C; VF = 0.49 V typical at 8 A | Slightly lower VF improves efficiency in high-ambient environments (>60°C), but tighter thermal spec requires precise case temp monitoring | Preferred when junction temperature margin is constrained and layout permits accurate TC measurement |
| ON Semiconductor SB820 | DO-214AB, 20 V, 8 A, but VF = 0.58 V max at 8 A; RθJA = 22 °C/W; MSL Level 1 confirmed | Higher VF increases conduction loss by ~0.24 W at full load; identical footprint enables drop-in replacement with minor efficiency trade-off | Selected for supply chain diversification where 3% efficiency reduction is acceptable for dual-sourcing assurance |
Compared with VS-8EWH02HM3/86A and SB820, SK82CHM6G offers balanced thermal performance (20 °C/W), industry-standard 0.55 V VF, and guaranteed 125°C TJ rating-making it optimal for cost-sensitive, space-constrained adapter and lighting designs requiring proven reliability and J-STD-020 Level 1 handling.
Availability
SK82CHM6G is available at Aetrix Electronics and suitable for AC/DC adapters, LED drivers, and industrial SMPS requiring stable component supply, long-term manufacturability, and full compliance with RoHS and halogen-free standards.
Supply support for SK82CHM6G 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 and signal conditioning markets since 1979.
The SK82C–SK810C family was designed specifically for high-efficiency, surface-mount rectification in cost-sensitive consumer and industrial power supplies-emphasizing low VF, rugged surge capability, and seamless SMT integration.
FAQ
What is the maximum junction temperature rating for SK82CHM6G?
The SK82CHM6G has a maximum junction temperature (TJ) rating of +125°C, as specified in the Absolute Maximum Ratings table. This value applies across the full operating current range and is validated under steady-state conditions with proper thermal management. The SK82CHM6G must not exceed this limit during operation to ensure long-term reliability and avoid parametric shift or catastrophic failure.
Is SK82CHM6G compatible with lead-free reflow soldering profiles?
Yes, SK82CHM6G is fully compatible with standard lead-free reflow profiles (e.g., JEDEC J-STD-020 Rev D). Its matte tin-plated leads meet J-STD-002 solderability requirements, and its MSL Level 1 classification means no dry-pack or baking is required prior to assembly. The device's UL 94V-0 molding compound also withstands peak reflow temperatures up to 260°C.
Does SK82CHM6G have a specified reverse recovery time (trr)?
No, SK82CHM6G does not specify reverse recovery time because it is a Schottky barrier diode with majority-carrier conduction. Unlike PN junction diodes, it exhibits negligible stored charge and effectively zero reverse recovery time-confirmed by absence of trr in all electrical specifications and characteristic curves. This enables clean switching in high-frequency converters without snubber networks.
What is the cathode marking convention for SK82CHM6G?
The cathode of SK82CHM6G is marked by a distinct molded band on the body of the DO-214AB (SMC) package. This band aligns with lead 2 (cathode terminal) and is visible on the top surface of the device. Polarity orientation is further reinforced in the official TSC package outline drawing and suggested pad layout documentation for SK82CHM6G.
How does the 150 A IFSM rating translate to real-world surge tolerance?
The 150 A IFSM rating for SK82CHM6G corresponds to a single 8.3 ms half-sine surge waveform-matching the IEC 61000-4-5 line surge test condition. In practice, this allows the SK82CHM6G to survive repeated cold-start inrush currents in 24 W adapters and transient overloads in LED drivers without degradation, provided the surge duty cycle remains non-repetitive and junction temperature stays within limits.
SK82CHM6G 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):
- 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
SK82CHM6G FAQ
1.How can I place an order for SK82CHM6G through Aetrix?
Please submit a Request for Quotation (RFQ) for SK82CHM6G 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 SK82CHM6G reliable?
The price and inventory of SK82CHM6G are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SK82CHM6G is usually 5 days.
3.What payment methods are accepted for SK82CHM6G?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SK82CHM6G transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SK82CHM6G?
SK82CHM6G orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SK82CHM6G 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 SK82CHM6G?
For technical support, including SK82CHM6G datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SK82CHM6G requirements.
6.How does Aetrix verify that SK82CHM6G is sourced from the original manufacturer or authorized distributors?
All SK82CHM6G 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 SK82CHM6G meets industry standards.
7.What is the process for return or replacement of SK82CHM6G?
All SK82CHM6G units undergo pre-shipment inspection (PSI). If there is an issue with SK82CHM6G, 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 SK82CHM6G part is unused and in its original packaging.
Return procedure for SK82CHM6G:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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