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Home > Products > Discrete Semiconductor Products > Diodes > Rectifiers > Single Diodes

Taiwan Semiconductor Corporation SK55C V7G

Name: SK55C V7G
Brand: Taiwan Semiconductor Corporation
SKU: SK55C V7G
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: SK55C V7G

Manufacturer:: Taiwan Semiconductor Corporation

Category:: Single Diodes

Package:: DO-214AB, SMC

Datasheet:: SK55C V7G.pdf

Description:: DIODE SCHOTTKY 50V 5A DO214AB

Quantity:: RFQ Add To RFQ list

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Inventory:3,077

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Product details

Overview

SK55C V7G from Taiwan Semiconductor is a 5A, 50V Schottky barrier surface-mount rectifier in DO-214AB (SMC) package, optimized for high-efficiency DC/DC conversion with low forward voltage (0.75 V at 5 A, 25°C), high surge capability (120 A), and junction temperature up to 150°C. It serves as the output rectifier in compact AC/DC adapters and offline SMPS.

For engineers reviewing the SK55C V7G datasheet, SK55C V7G pinout, SK55C V7G application, or SK55C V7G equivalent, key selection criteria include its 50 V repetitive peak reverse voltage, 0.75 V forward drop at rated current, 10 mA reverse leakage at 100°C, 13°C/W junction-to-lead thermal resistance, and DO-214AB mechanical compatibility with automated SMT assembly.

Technical Context

The SK55C V7G implements a single-die Schottky junction with guard ring structure for enhanced overvoltage ruggedness and meets JESD201 Class 2 whisker resistance. Its 50 V V_RRM and 35 V V_R(RMS) rating target mid-voltage secondary-side rectification where low conduction loss outweighs higher leakage trade-offs.

Thermal performance is defined for mounting on a 16 mm × 16 mm copper pad: R_θJL = 13°C/W enables reliable 5 A continuous operation without forced airflow, while dV/dt rating of 10,000 V/µs supports fast-switching topologies like active-clamp flyback and resonant LLC converters.

Key Specifications

Parameter	Value and Actual Design Meaning
V_RRM	50 V - Maximum repetitive reverse voltage before breakdown; sets upper limit for output rectifier selection in 36–48 V nominal systems.
V_F @ 5 A, 25°C	0.75 V - Low conduction loss reduces power dissipation by ~3.75 W at full load, improving efficiency in space-constrained adapters.
I_FSM	120 A - Withstands 8.3 ms half-sine surges; supports inrush current handling during cold-start in industrial power supplies.
I_R @ 50 V, 100°C	10 mA - Higher leakage than lower-voltage variants but acceptable for thermally managed designs with heatsinking or airflow.
R_θJL	13 °C/W - Enables direct thermal path to PCB copper; allows 5 A continuous current with ≤65°C temperature rise above ambient on standard FR4.
Junction temp range	−55°C to +150°C - Supports operation in extended-temperature industrial and outdoor lighting environments.

Pinout & Package

Package: DO-214AB (SMC), surface-mount, cathode indicated by band. Molding compound meets UL 94V-0; matte tin-plated leads comply with J-STD-002 solderability.

Pin/Terminal	Circuit Role	Design Meaning
Anode	Input terminal for forward conduction	Connected to transformer secondary or switch node; requires adequate copper area for thermal relief and current carrying.
Cathode	Output terminal for forward conduction	Connected to output capacitor and load; polarity marking ensures correct orientation during automated placement.

Key Features

Feature	Design Value
Guard ring structure	Improves transient overvoltage immunity without increasing forward voltage, enabling robust operation in noisy SMPS environments.
Moisture sensitivity level 1	Eliminates bake requirement prior to reflow, reducing manufacturing cost and cycle time for high-volume SMT lines.
Halogen-free & RoHS compliant	Meets global environmental compliance mandates including EU RoHS Directive 2011/65/EU and JEDEC J-STD-020 moisture classification.
High I_FSM/I_F ratio (24×)	Provides margin against line transients and startup surges, reducing need for external TVS or fusing in cost-sensitive consumer power designs.

Applications

AC/DC Adapters	LED Drivers
Use Scenario: 12–24 V output, 30–65 W wall-mounted adapters for laptops, monitors, and IoT gateways. IC Role / Device Role / Timing Role: Output rectifier in secondary-side synchronous or quasi-resonant flyback topology. Use Value: 0.75 V V_F minimizes conduction loss at 5 A, enabling >88% efficiency at full load without heatsink.	Use Scenario: Constant-current LED drivers for commercial downlights and streetlight modules operating at 36–48 V output. IC Role / Device Role / Timing Role: Secondary-side freewheeling diode in buck-derived or flyback-based constant-current regulators. Use Value: 150°C max junction temperature supports sealed fixture designs with limited airflow and high ambient temperatures.
Industrial SMPS	USB PD Power Delivery
Use Scenario: 24 V/5 A open-frame power supplies for PLC I/O modules and factory automation controllers. IC Role / Device Role / Timing Role: Main output rectifier in dual-switch forward or active-clamp forward converters. Use Value: 120 A I_FSM withstands repeated motor startup surges and ESD-coupled transients on shared DC bus lines.	Use Scenario: 20 V PPS (Programmable Power Supply) output stage in multi-port USB-C PD chargers delivering up to 100 W. IC Role / Device Role / Timing Role: Synchronous rectifier replacement in fixed 20 V output rails where Schottky offers simpler control than MOSFET drivers. Use Value: DO-214AB footprint matches common layout templates, enabling drop-in upgrade from SK54C without PCB revision.

AC/DC Adapters

LED Drivers

Use Scenario: 12–24 V output, 30–65 W wall-mounted adapters for laptops, monitors, and IoT gateways.

IC Role / Device Role / Timing Role: Output rectifier in secondary-side synchronous or quasi-resonant flyback topology.

Use Value: 0.75 V V_F minimizes conduction loss at 5 A, enabling >88% efficiency at full load without heatsink.

Use Scenario: Constant-current LED drivers for commercial downlights and streetlight modules operating at 36–48 V output.

IC Role / Device Role / Timing Role: Secondary-side freewheeling diode in buck-derived or flyback-based constant-current regulators.

Use Value: 150°C max junction temperature supports sealed fixture designs with limited airflow and high ambient temperatures.

Industrial SMPS

USB PD Power Delivery

Use Scenario: 24 V/5 A open-frame power supplies for PLC I/O modules and factory automation controllers.

IC Role / Device Role / Timing Role: Main output rectifier in dual-switch forward or active-clamp forward converters.

Use Value: 120 A I_FSM withstands repeated motor startup surges and ESD-coupled transients on shared DC bus lines.

Use Scenario: 20 V PPS (Programmable Power Supply) output stage in multi-port USB-C PD chargers delivering up to 100 W.

IC Role / Device Role / Timing Role: Synchronous rectifier replacement in fixed 20 V output rails where Schottky offers simpler control than MOSFET drivers.

Use Value: DO-214AB footprint matches common layout templates, enabling drop-in upgrade from SK54C without PCB revision.

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-50SQ040	40 V V_RRM, 0.52 V V_F @ 5 A, same DO-214AB package	Limited to ≤36 V output systems; lower V_F improves light-load efficiency but sacrifices voltage margin	Select when system V_OUT ≤ 36 V and lowest possible conduction loss is critical
ON Semiconductor SB550	50 V V_RRM, 0.72 V V_F @ 5 A, DO-214AB, 100°C I_R = 8 mA	Nearly identical electrical specs; slightly lower leakage and tighter V_F tolerance	Preferred for high-reliability industrial designs requiring AEC-Q200-aligned sourcing

Compared with VS-50SQ040 and SB550, the SK55C V7G provides balanced voltage margin and thermal robustness for 48 V-class outputs, with verified 10 mA leakage at 100°C enabling stable operation in thermally constrained enclosures without derating.

Availability

SK55C V7G is available at Aetrix Electronics and suitable for AC/DC adapters, LED drivers, and industrial SMPS requiring stable component supply, consistent DO-214AB packaging, and long-term production continuity.

Supply support for SK55C V7G 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 SK52C–SK520C family delivers standardized Schottky rectifiers across 20–200 V ratings, designed specifically for cost-sensitive, high-volume switching power supplies where reliability, thermal performance, and SMT manufacturability are prioritized.

FAQ

What is the maximum junction temperature rating for SK55C V7G?

The SK55C V7G has a maximum junction temperature (T_J) of +150°C, validated per absolute maximum ratings in the official TSC datasheet Version S2311. This rating allows continuous 5 A operation in enclosed LED drivers or industrial SMPS with ambient temperatures up to 85°C when mounted on a 16 mm × 16 mm Cu pad. Thermal design must respect R_θJL = 13°C/W to avoid exceeding this limit.

Does SK55C V7G meet RoHS and halogen-free requirements?

Yes, SK55C V7G is RoHS compliant and halogen-free per TSC's official documentation (Version S2311). The molding compound satisfies UL 94V-0 flammability rating, and terminals are matte tin plated to meet J-STD-002 solderability standards. These certifications are confirmed in the Mechanical Data and Features sections of the datasheet.

What is the forward voltage of SK55C V7G at 5 A and 125°C?

The forward voltage (V_F) of SK55C V7G is not explicitly specified at 125°C in the TSC datasheet Version S2311. However, typical V_F increases with temperature; based on Fig.6 (Typical Forward Characteristics), V_F at 5 A rises approximately 0.1–0.15 V above the 25°C value of 0.75 V, yielding an estimated range of 0.85–0.90 V at 125°C under pulsed conditions.

Is SK55C V7G suitable for use in USB PD 3.0 applications?

Yes, SK55C V7G is suitable for fixed 20 V or programmable 28–36 V output rails in USB PD 3.0 chargers. Its 50 V V_RRM provides sufficient margin against voltage overshoot during dynamic load steps, and its DO-214AB footprint aligns with common layout practices for secondary-side rectification in multi-port PD designs.

What is the moisture sensitivity level (MSL) of SK55C V7G?

The SK55C V7G has a moisture sensitivity level (MSL) of Level 1 per J-STD-020, meaning it can be stored indefinitely at ≤30°C/60% RH without baking prior to reflow soldering. This eliminates pre-reflow bake cycles in high-volume SMT lines, reducing process complexity and cost for manufacturers using SK55C V7G in adapters and lighting products.

SK55C V7G 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):: 50 V

Current - Average Rectified (Io):: 5A

Voltage - Forward (Vf) (Max) @ If:: 750 mV @ 5 A

Speed:: Fast Recovery =< 500ns, > 200mA (Io)

Reverse Recovery Time (trr):: -

Current - Reverse Leakage @ Vr:: 500 µA @ 50 V

Capacitance @ Vr, F:: -

Grade:: -

Qualification:: -

Mounting Type:: Surface Mount

Supplier Device Package:: DO-214AB (SMC)

Operating Temperature - Junction:: -55°C ~ 150°C

SK55C V7G FAQ

1.How can I place an order for SK55C V7G through Aetrix?

Please submit a Request for Quotation (RFQ) for SK55C V7G 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 SK55C V7G reliable?

The price and inventory of SK55C V7G are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SK55C V7G is usually 5 days.

3.What payment methods are accepted for SK55C V7G?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SK55C V7G transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for SK55C V7G?

SK55C V7G orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your SK55C V7G 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 SK55C V7G?

For technical support, including SK55C V7G datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SK55C V7G requirements.

6.How does Aetrix verify that SK55C V7G is sourced from the original manufacturer or authorized distributors?

All SK55C V7G 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 SK55C V7G meets industry standards.

7.What is the process for return or replacement of SK55C V7G?

All SK55C V7G units undergo pre-shipment inspection (PSI). If there is an issue with SK55C V7G, 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 SK55C V7G part is unused and in its original packaging.

Return procedure for SK55C V7G:

1.Submit a request within 90 days.

2.Obtain a Return Material Authorization (RMA) from Aetrix.

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