My Inquiry
My Account
Taiwan Semiconductor Corporation SK82CHR7G
- Part No.:
- SK82CHR7G
- Manufacturer:
- Taiwan Semiconductor Corporation
- Category:
- Single Diodes
- Package:
- DO-214AB, SMC
- Datasheet:
-
SK82CHR7G.pdf
- Description:
- DIODE SCHOTTKY 20V 8A DO214AB
- Quantity:
- Payment:
- Shipping:
Inventory:2,736
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
SK82CHR7G from Taiwan Semiconductor is an 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 serves as a high-efficiency output rectifier in compact AC/DC adapters and DC/DC converters.
For engineers reviewing the SK82CHR7G datasheet, SK82CHR7G pinout, SK82CHR7G application, or SK82CHR7G 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.
Technical Context
This Schottky rectifier uses a single-die construction with guard ring overvoltage protection and matte tin-plated leads compliant with J-STD-002 solderability. Its 10,000 V/µs critical dV/dt rating supports fast-switching topologies without parasitic turn-on.
Thermal performance is defined by a junction-to-ambient thermal resistance of 20 °C/W under standard PCB mounting conditions. The device operates across –55°C to +125°C junction temperature range and meets UL 94V-0 flammability requirements for the molding compound.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VRRM | 20 V - Maximum repetitive reverse blocking voltage; sets minimum input/output isolation margin in 12–24 V output SMPS designs |
| IF | 8 A - Continuous average forward current; defines steady-state conduction capability at rated case temperature |
| VF @ 8 A, 25°C | 0.55 V - Low conduction loss enabling >92% efficiency in 5–24 V output converters |
| IFSM | 150 A - Non-repetitive surge rating; withstands inrush and transient overload without bond-wire failure |
| RθJA | 20 °C/W - Thermal resistance defining required copper area and via count for thermal management on FR-4 PCB |
| IR @ 20 V, 25°C | 0.5 mA - Reverse leakage limiting standby power loss in always-on auxiliary supplies |
| MSL | Level 1 per J-STD-020 - No floor life limitation; suitable for direct placement without baking |
Pinout & Package
Package: DO-214AB (SMC), surface-mount, cathode indicated by band. Weight: 0.210 g. Molding compound: UL 94V-0 rated. Leads: Matte tin plated, J-STD-002 compliant.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Input current terminal | Connected to switching node or transformer secondary; must handle full load current and high di/dt |
| Cathode | Output current terminal | Connected to output capacitor and load; marked by visible band; polarity-critical for correct rectification |
Key Features
| Feature | Design Value |
|---|---|
| Guard ring structure | Prevents edge breakdown at rated VRRM, improving reliability under voltage transients |
| High surge current capability (150 A) | Supports repeated cold-start and short-circuit events without degradation |
| Moisture sensitivity level 1 | Eliminates pre-bake requirement, reducing SMT line downtime and handling cost |
| Halogen-free per IEC 61249-2-21 | Meets environmental compliance for industrial and consumer end-equipment |
Applications
| AC/DC Adapters | DC/DC Converters |
|---|---|
Use Scenario: 12 V/5 A wall adapter for networking equipment with 65 kHz flyback topology. IC Role / Device Role / Timing Role: Output rectifier replacing conventional PN diodes to reduce conduction loss and improve light-load efficiency. Use Value: 0.55 V VF lowers output stage power dissipation by ~2.2 W vs. 0.8 V diode, reducing heatsink need and enabling smaller form factor. | Use Scenario: 5 V/6 A isolated buck-derived converter in industrial PLC I/O module. IC Role / Device Role / Timing Role: Secondary-side synchronous rectifier alternative where gate drive complexity is undesirable. Use Value: Enables >90% full-load efficiency without control IC or MOSFET driver, simplifying BOM and layout. |
| LED Drivers | Telecom Power Supplies |
Use Scenario: Constant-current LED driver for street lighting using quasi-resonant flyback with 24 V output. IC Role / Device Role / Timing Role: High-frequency rectifier in output stage subjected to 100 kHz+ switching and thermal cycling. Use Value: 125°C TJ max and 20 °C/W RθJA allow operation at 75°C ambient without derating, supporting sealed outdoor enclosures. | Use Scenario: -48 V telecom rectifier module with redundant 20 V output rails feeding hot-swap controllers. IC Role / Device Role / Timing Role: Input-stage OR-ing diode providing reverse-polarity and fault isolation between parallel power feeds. Use Value: 150 A IFSM sustains multiple hot-swap events; cathode-band marking ensures unambiguous orientation during manual repair. |
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-8EWH02-M3/45 | Same 20 V VRRM, 8 A IF, but TO-277 package (smaller footprint, higher RθJA = 25 °C/W) | Preferred where board space is constrained but thermal budget allows higher junction rise | Select when minimizing PCB area outweighs thermal performance trade-off |
| ON Semiconductor SB820 | 20 V VRRM, 8 A IF, DO-214AB package, but VF = 0.62 V (max) at 8 A - 13% higher conduction loss | Suitable for cost-sensitive, non-thermally constrained applications with relaxed efficiency targets | Choose when BOM cost priority exceeds 0.07 V VF advantage of SK82CHR7G |
Compared with VS-8EWH02-M3/45 and SB820, SK82CHR7G delivers the lowest VF (0.55 V typ) in DO-214AB while maintaining industry-standard MSL Level 1 and guard ring protection - making it optimal for thermally dense, high-efficiency 20 V output supplies.
Availability
SK82CHR7G is available at Aetrix Electronics and suitable for AC/DC adapters, DC/DC converters, and LED drivers requiring stable component supply, long-term manufacturability, and RoHS-compliant sourcing.
Supply support for SK82CHR7G 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 electronics markets since 1979.
The SK8xC series is designed specifically for high-current, low-VF Schottky rectification in space-constrained, thermally demanding power conversion stages - emphasizing ruggedness, consistency, and ease of automated assembly.
FAQ
What is the maximum junction temperature rating for SK82CHR7G?
The SK82CHR7G has a maximum junction temperature (TJ) rating of +125°C. This rating applies under continuous operation with proper thermal management on a standard FR-4 PCB. The device is not rated for 150°C operation - that specification applies only to higher-voltage variants like SK810C. Exceeding +125°C risks parametric shift and accelerated degradation of the SK82CHR7G.
Does SK82CHR7G have a guard ring structure?
Yes, SK82CHR7G incorporates a guard ring structure explicitly stated in its official datasheet features. This design enhances edge termination robustness, preventing premature avalanche breakdown at the silicon periphery and improving reliability under repetitive voltage transients - a key differentiator versus basic Schottky rectifiers without guard rings.
Is SK82CHR7G compatible with lead-free reflow soldering processes?
Yes, SK82CHR7G is fully compatible with lead-free reflow soldering. Its matte tin-plated leads meet J-STD-002 solderability requirements, and the device is rated for peak reflow temperatures up to 260°C per JEDEC J-STD-020. No special pre-conditioning is needed due to its J-STD-020 Moisture Sensitivity Level 1 classification.
What is the reverse leakage current of SK82CHR7G at 100°C?
At TJ = 100°C and VR = 20 V, the reverse leakage current (IR) of SK82CHR7G is rated at a maximum of 15 mA. This value is confirmed in the Electrical Specifications table for SK82C–SK84C variants. Higher leakage at elevated temperature is inherent to Schottky physics and must be accounted for in low-power standby circuit design.
Can SK82CHR7G be used as a drop-in replacement for SK82C?
Yes, SK82CHR7G is a direct variant of the SK82C family - the "R7G" suffix denotes tape-and-reel packaging (3,000 pcs/reel) and green compound (halogen-free), with identical electrical, thermal, and mechanical specifications. All parameters including VRRM, IF, VF, IFSM, and DO-214AB package dimensions match SK82C exactly.
SK82CHR7G 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
SK82CHR7G FAQ
1.How can I place an order for SK82CHR7G through Aetrix?
Please submit a Request for Quotation (RFQ) for SK82CHR7G 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 SK82CHR7G reliable?
The price and inventory of SK82CHR7G are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SK82CHR7G is usually 5 days.
3.What payment methods are accepted for SK82CHR7G?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SK82CHR7G transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SK82CHR7G?
SK82CHR7G orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SK82CHR7G 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 SK82CHR7G?
For technical support, including SK82CHR7G datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SK82CHR7G requirements.
6.How does Aetrix verify that SK82CHR7G is sourced from the original manufacturer or authorized distributors?
All SK82CHR7G 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 SK82CHR7G meets industry standards.
7.What is the process for return or replacement of SK82CHR7G?
All SK82CHR7G units undergo pre-shipment inspection (PSI). If there is an issue with SK82CHR7G, 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 SK82CHR7G part is unused and in its original packaging.
Return procedure for SK82CHR7G:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SK82CHR7G Tags
-
1N4448X-TP
Micro Commercial Co
-
1N4148WX-TP
Micro Commercial Co
-
1N4148TR
onsemi
-
MMSD4148T1G
onsemi
-
MMBD914LT3G
onsemi
-
BAS16HT1G
onsemi
-
1N914BWT
onsemi
-
BAS21LT1G
onsemi
-
LL4148
onsemi
-
BAS16LT1G
onsemi
-
MMSD914T1G
onsemi
-
BAV21W-7-F
Diodes Incorporated
Tech Hub
Counterfeit components can hide behind convincing markings and passing basic function tests. This engineering reference covers source traceability, external inspection, X-ray, XRF, electrical testing, …
A practical engineering and sourcing framework covering lifecycle verification, lifetime-buy calculations, replacement qualification, supplier checks and counterfeit-risk controls.
TTL and CMOS logic families differ in thresholds, loading, output drive, power and timing. This engineering guide compares 74HC and 74HCT, calculates noise margins and checks 3.3 V/5 V compatibility.
A practical engineering guide to 3.3V and 5V logic compatibility, input thresholds, resistor dividers, translator ICs, MOSFET level shifting, I2C pull-ups, timing limits and power-sequencing risks.
The 74HC595 uses push-pull logic outputs, while the TPIC6B595 uses 50 V open-drain DMOS sinks for higher-power loads. This guide compares timing, current limits, 3.3 V interfacing, load wiring, thermal…
The 74HC595 converts serial data into eight stable parallel outputs. This guide covers pin functions, shift and storage timing, OE and MR behavior, drive-current limits, cascading, voltage compatibilit…
A technical comparison of level-sensitive latches and edge-triggered flip-flops, covering timing windows, setup and hold limits, master–slave operation, time borrowing, race-through, HDL inference and…
A D latch stores one bit while Enable controls when data can pass. This reference covers gate-level operation, truth tables, transparency, setup and hold timing, LE versus OE, common ICs and practical …
An SR latch stores one bit through cross-coupled feedback. This engineering reference covers NOR and NAND implementations, truth tables, forbidden-state recovery, gated operation, switch debouncing, fa…
Latch circuits retain one bit through feedback. This technical reference covers SR and D latches, truth tables, transparency, timing limits, latch-versus-flip-flop behavior, applications and common log…
