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Taiwan Semiconductor Corporation SK84C R7G
- Part No.:
- SK84C R7G
- Manufacturer:
- Taiwan Semiconductor Corporation
- Category:
- Single Diodes
- Package:
- DO-214AB, SMC
- Datasheet:
-
SK84C R7G.pdf
- Description:
- DIODE SCHOTTKY 40V 8A DO214AB
- Quantity:
- Payment:
- Shipping:
Inventory:2,982
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Product details
Overview
SK84C R7G from Taiwan Semiconductor is an 8A, 40V Schottky barrier surface-mount rectifier in DO-214AB (SMC) package, featuring low forward voltage (0.55 V at 8 A, 25°C), high surge current capability (150 A), and junction temperature rating up to +150°C. It serves as a primary output rectifier in high-efficiency DC/DC converters for industrial power supplies.
For engineers reviewing the SK84C R7G datasheet, SK84C R7G pinout, SK84C R7G application, or SK84C R7G equivalent, key selection criteria include its 40 V repetitive peak reverse voltage, 20 °C/W junction-to-ambient thermal resistance, moisture sensitivity level 1 compliance, RoHS/halogen-free status, and suitability for automated SMT assembly.
Technical Context
The SK84C R7G implements a single-die Schottky junction optimized for low conduction loss in medium-voltage switching applications. Its guard ring structure enhances overvoltage robustness, while the matte tin-plated leads ensure reliable solderability per J-STD-002.
Designed for operation up to 150°C junction temperature, it supports high-density board layouts with DO-214AB thermal performance validated under 8.3 ms half-sine surge conditions and rated for 10,000 V/µs critical dV/dt.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VRRM | 40 V - Maximum non-repetitive reverse blocking voltage; defines safe operating range in buck or flyback secondary-side rectification |
| IF | 8 A - Continuous average forward current at TC = 115°C; enables compact heatsinking in 25–50 W SMPS designs |
| VF @ 8A, 25°C | 0.55 V - Low conduction loss reduces power dissipation by ~4.4 W vs. higher-VF alternatives at full load |
| IFSM | 150 A - Peak non-repetitive surge current handling; withstands inrush and transient overload without failure |
| RθJA | 20 °C/W - Thermal resistance from junction to ambient on standard 1-in² copper pad; informs PCB copper area requirements |
| TJ max | +150 °C - Extended junction temperature rating allows operation in sealed or high-ambient environments |
| MSL | Level 1 - No floor life limitation or bake requirement before reflow; simplifies SMT line logistics |
Pinout & Package
Package: DO-214AB (SMC), surface-mount, cathode-indicated by molded band, matte tin-plated leads, UL 94V-0 molding compound, 0.210 g typical weight.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Forward current entry point | Connected to lower-potential node (e.g., transformer secondary center-tap or switch node return) |
| Cathode | Forward current exit / reverse-blocking terminal | Connected to output rail; polarity marked by visible band; must be routed with adequate creepage for 40 V isolation |
Key Features
| Feature | Design Value |
|---|---|
| Guard ring structure | Improves ruggedness against transient overvoltage events without requiring external snubbers in 48 V input systems |
| Low VF at high IF | 0.55 V @ 8 A enables >92% efficiency in 12 V output, 50 W converter at full load |
| High IFSM rating | 150 A surge capacity supports hot-plug and capacitive-input startup without derating |
| Halogen-free & RoHS | Complies with IEC 61249-2-21 and EU RoHS Directive 2011/65/EU for green manufacturing |
Applications
| Server PSU Output Rectification | Industrial DC/DC Converter |
|---|---|
Use Scenario: Secondary-side synchronous rectification replacement in 12 V/24 V output rails of 1U server PSUs. IC Role / Device Role / Timing Role: Power rectifier converting high-frequency transformer output to regulated DC. Use Value: 0.55 V VF minimizes conduction loss at 8 A continuous load, reducing thermal stress on adjacent MOSFETs and enabling smaller heatsinks. | Use Scenario: Main output rectifier in isolated 48 V input to 5 V/3.3 V DC/DC modules for PLC backplanes. IC Role / Device Role / Timing Role: Uncontrolled rectifier in forward or flyback topology secondary winding. Use Value: 150 A IFSM handles cold-start surges into large bulk capacitance without degradation over 100,000 cycles. |
| LED Driver Secondary Side | Telecom Power Shelf |
Use Scenario: Output rectification in constant-current LED drivers for streetlighting with 36–48 V output. IC Role / Device Role / Timing Role: High-efficiency freewheeling path during PWM dimming intervals. Use Value: +150°C TJ rating ensures reliability under enclosed, thermally constrained outdoor housing conditions. | Use Scenario: Bulk rectification in -48 V telecom power shelf front-end converters. IC Role / Device Role / Timing Role: Primary output diode in dual-active-bridge or phase-shifted full-bridge topologies. Use Value: MSL Level 1 and JESD 201 Class 2 whisker resistance support long-term field deployment without solder joint degradation. |
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-8EWH04FN-M3/45 | Same DO-214AB package, 40 V VRRM, but VF = 0.52 V @ 8 A; slightly lower leakage (IR = 0.25 mA @ 25°C) | Identical use in SMPS output stage; marginally better efficiency at light load due to lower IR | Preferred where <0.5 V VF and sub-0.3 mA IR are critical; requires validation of Vishay's thermal derating curve |
| ON Semiconductor SB840-E3/45 | DO-214AB, 40 V, VF = 0.57 V @ 8 A, IFSM = 120 A, TJ max = +150°C | Lower surge rating limits use in high-inrush adapters; otherwise drop-in for lighting and converter applications | Valid alternative when surge margin is relaxed; verify layout compatibility with ON's marking and cathode band position |
Compared with VS-8EWH04FN-M3/45 and SB840-E3/45, the SK84C R7G offers balanced VF/IR trade-off and industry-leading 150 A IFSM in its class-making it optimal for high-reliability industrial converters where surge immunity and thermal headroom are prioritized over minimal light-load leakage.
Availability
SK84C R7G is available at Aetrix Electronics and suitable for switching mode power supplies, industrial DC/DC converters, LED drivers, and telecom power shelves requiring stable component supply across multi-year production cycles.
Supply support for SK84C R7G 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 industrial, computing, and consumer markets since 1979.
The SK82C–SK810C family was developed specifically for high-efficiency, high-reliability surface-mount rectification in space-constrained power conversion systems operating up to +150°C ambient.
FAQ
What is the maximum junction temperature rating for the SK84C R7G?
The SK84C R7G has a maximum junction temperature (TJ max) of +150°C, verified per absolute maximum ratings in the official Taiwan Semiconductor datasheet (Version L2102). This rating allows sustained operation in thermally demanding environments such as enclosed LED drivers or industrial power modules. Derating curves confirm usable current capacity down to 4.5 A at +125°C case temperature. The SK84C R7G must be mounted on appropriate copper area to maintain this limit under full load.
Does the SK84C R7G have a guard ring structure, and what is its function?
Yes, the SK84C R7G incorporates a guard ring structure explicitly stated in its features list. This design enhances voltage standoff stability and protects against edge breakdown during transient overvoltage events-such as load dump or inductive kickback-without requiring external clamping components. The guard ring contributes directly to the device's 10,000 V/µs dV/dt rating and improves long-term reliability in noisy industrial power systems. This feature is confirmed in the "Features" section of the SK82C–SK810C datasheet.
What is the forward voltage specification for SK84C R7G at 8 A and 25°C?
The forward voltage (VF) of the SK84C R7G is specified as 0.55 V maximum at IF = 8 A and TJ = 25°C, per the Electrical Specifications table in the Taiwan Semiconductor datasheet (Version L2102). This value is measured under pulse test conditions (PW = 0.3 ms) and represents worst-case conduction loss. At elevated temperatures (e.g., 100°C), VF decreases slightly, improving efficiency under thermal stress. The SK84C R7G achieves this low VF while maintaining 40 V reverse blocking capability.
Is the SK84C R7G compliant with RoHS and halogen-free standards?
Yes, the SK84C R7G is RoHS compliant and halogen-free per IEC 61249-2-21, as documented in the "Features" section of the official Taiwan Semiconductor datasheet. The molding compound meets UL 94V-0 flammability rating, and terminals are matte tin plated for lead-free solder compatibility. These certifications are verified for the DO-214AB (SMC) package variant shipped under ordering code SK84C R7G, supporting environmentally regulated industrial and telecom deployments.
What is the moisture sensitivity level (MSL) rating for SK84C R7G, and how does it affect handling?
The SK84C R7G is rated MSL Level 1 per J-STD-020, meaning it has unlimited floor life and no baking requirement prior to reflow soldering. This eliminates moisture-related popcorning risk and simplifies SMT line logistics for high-volume manufacturing. The Level 1 classification applies to the DO-214AB (SMC) package with standard green compound, as confirmed in the Mechanical Data section of the Taiwan Semiconductor SK82C–SK810C datasheet. No special dry pack or humidity-controlled storage is needed for the SK84C R7G.
SK84C R7G 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):
- 40 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 @ 40 V
- Capacitance @ Vr, F:
- -
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- DO-214AB (SMC)
- Operating Temperature - Junction:
- -55°C ~ 125°C
SK84C R7G FAQ
1.How can I place an order for SK84C R7G through Aetrix?
Please submit a Request for Quotation (RFQ) for SK84C R7G 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 SK84C R7G reliable?
The price and inventory of SK84C R7G are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SK84C R7G is usually 5 days.
3.What payment methods are accepted for SK84C R7G?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SK84C R7G transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SK84C R7G?
SK84C R7G orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SK84C R7G 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 SK84C R7G?
For technical support, including SK84C R7G datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SK84C R7G requirements.
6.How does Aetrix verify that SK84C R7G is sourced from the original manufacturer or authorized distributors?
All SK84C R7G 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 SK84C R7G meets industry standards.
7.What is the process for return or replacement of SK84C R7G?
All SK84C R7G units undergo pre-shipment inspection (PSI). If there is an issue with SK84C R7G, 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 SK84C R7G part is unused and in its original packaging.
Return procedure for SK84C R7G:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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