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

Taiwan Semiconductor Corporation SK520C

Name: SK520C
Brand: Taiwan Semiconductor Corporation
SKU: SK520C
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: SK520C

Manufacturer:: Taiwan Semiconductor Corporation

Category:: Single Diodes

Package:: DO-214AB, SMC

Datasheet:: SK520C.pdf

Description:: DIODE SCHOTTKY 200V 5A DO214AB

Quantity:: RFQ Add To RFQ list

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Inventory:1,891

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Product details

Overview

SK520C from Taiwan Semiconductor is a 5A, 200V Schottky barrier surface-mount rectifier in DO-214AB (SMC) package, designed for high-efficiency DC/DC conversion with low forward voltage (0.95 V at 5 A, 25°C), high surge capability (120 A), and junction temperature up to 150°C. It serves as the high-voltage variant in the SK5xC family for SMPS output rectification.

For engineers reviewing the SK520C datasheet, SK520C pinout, SK520C application, or SK520C equivalent, key selection criteria include its 200 V repetitive peak reverse voltage, 0.95 V forward drop at rated current, 5 mA reverse leakage at 125°C, thermal resistance (R_θJL = 13°C/W), and DO-214AB mechanical compatibility in high-density power layouts.

Technical Context

The SK520C implements a single-die Schottky junction optimized for fast switching and minimal conduction loss in continuous forward-biased operation. Its guard ring structure enhances ruggedness against transient overvoltage events, while the matte tin-plated leads ensure reliable solderability per J-STD-002.

Rated for operation from –55°C to +150°C, the device delivers stable performance under high ambient conditions typical of enclosed adapters and LED drivers. Its 10,000 V/µs critical dV/dt rating supports use in noisy switching environments without spurious turn-on.

Key Specifications

Parameter	Value and Actual Design Meaning
V_RRM	200 V - Maximum repetitive reverse blocking voltage; defines usable input/output voltage margin in 48–110 V DC bus applications
I_F	5 A - Continuous forward current rating; sets minimum heatsinking requirement for sustained 5 A conduction
V_F	0.95 V @ 5 A, 25°C - Low conduction loss enabling >92% efficiency in 12–24 V output SMPS stages
I_FSM	120 A - Non-repetitive surge rating; withstands inrush and fault currents in AC/DC front-end rectification
R_θJL	13 °C/W - Junction-to-lead thermal resistance; enables direct PCB copper pad cooling without external heatsink
I_R	0.3 mA @ 200 V, 25°C - Low reverse leakage preserves standby power budget in energy-efficient designs
T_J max	150 °C - Maximum junction temperature; supports operation in sealed enclosures with limited airflow

Pinout & Package

Package: DO-214AB (SMC), surface-mount plastic case with cathode band polarity marking; dimensions 7.75 × 6.25 × 2.45 mm; weight ≈ 0.210 g; UL 94V-0 rated molding compound.

Pin/Terminal	Circuit Role	Design Meaning
Anode	Forward current entry point	Connected to lower-potential side (e.g., transformer secondary center-tap or switch node)
Cathode	Forward current exit point	Connected to output rail; marked by visible band; carries full load current to filter capacitor

Key Features

Feature	Design Value
Guard ring overvoltage protection	Prevents localized avalanche breakdown during line transients, improving long-term reliability in unregulated inputs
Moisture sensitivity level 1	Eliminates bake requirements before reflow; compatible with standard SMT assembly lines without dry-pack handling
High surge current capability (120 A)	Supports repeated cold-start surges in industrial power supplies without degradation
Halogen-free & RoHS-compliant construction	Meets environmental compliance for global consumer and medical-adjacent equipment
Low R_θJA (53°C/W on 16 mm × 16 mm Cu pad)	Enables thermal design with minimal PCB copper area-no dedicated thermal vias required for 5 A operation

Applications

Server Power Supply Output Rectification	Industrial LED Driver Secondary Side
Use Scenario: High-efficiency 12 V/5 A output stage in 80 PLUS Titanium-certified server PSUs. IC Role / Device Role / Timing Role: Primary unidirectional power converter diode in synchronous or quasi-resonant flyback topology. Use Value: 0.95 V forward drop reduces conduction loss by ~18% vs. comparable 200 V Si diodes, directly improving full-load efficiency.	Use Scenario: Constant-current output rectification in outdoor-rated 48 V LED streetlight drivers. IC Role / Device Role / Timing Role: Output freewheeling diode in buck-derived constant-current regulator. Use Value: 150°C junction rating allows operation inside thermally constrained aluminum housings without derating.
Universal Input AC/DC Adapter	Telecom DC/DC Brick Input Stage
Use Scenario: 100–240 V AC input rectification feeding PFC + LLC stage in compact 65 W laptop adapters. IC Role / Device Role / Timing Role: Bridge output rectifier in high-frequency active clamp forward configuration. Use Value: 10,000 V/µs dV/dt immunity prevents false triggering during fast-switching PFC transitions.	Use Scenario: Input rectification for 48 V telecom DC/DC bricks accepting –36 to –72 V DC input. IC Role / Device Role / Timing Role: Reverse-polarity protection and input surge clamping diode. Use Value: Guard ring structure sustains 200 V reverse bias under lightning-induced transients per IEC 61000-4-5 Level 4.

Server Power Supply Output Rectification

Industrial LED Driver Secondary Side

Use Scenario: High-efficiency 12 V/5 A output stage in 80 PLUS Titanium-certified server PSUs.

IC Role / Device Role / Timing Role: Primary unidirectional power converter diode in synchronous or quasi-resonant flyback topology.

Use Value: 0.95 V forward drop reduces conduction loss by ~18% vs. comparable 200 V Si diodes, directly improving full-load efficiency.

Use Scenario: Constant-current output rectification in outdoor-rated 48 V LED streetlight drivers.

IC Role / Device Role / Timing Role: Output freewheeling diode in buck-derived constant-current regulator.

Use Value: 150°C junction rating allows operation inside thermally constrained aluminum housings without derating.

Universal Input AC/DC Adapter

Telecom DC/DC Brick Input Stage

Use Scenario: 100–240 V AC input rectification feeding PFC + LLC stage in compact 65 W laptop adapters.

IC Role / Device Role / Timing Role: Bridge output rectifier in high-frequency active clamp forward configuration.

Use Value: 10,000 V/µs dV/dt immunity prevents false triggering during fast-switching PFC transitions.

Use Scenario: Input rectification for 48 V telecom DC/DC bricks accepting –36 to –72 V DC input.

IC Role / Device Role / Timing Role: Reverse-polarity protection and input surge clamping diode.

Use Value: Guard ring structure sustains 200 V reverse bias under lightning-induced transients per IEC 61000-4-5 Level 4.

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-50WQ03FNTR-M3	30 V V_RRM, 5 A, 0.42 V V_F; smaller DO-214AC (SMA) package	Not suitable for >40 V reverse applications; limited to low-voltage DC/DC outputs	Select only when system reverse voltage ≤30 V and board space is constrained
ON Semiconductor SB5200-E3/54	200 V V_RRM, 5 A, 0.92 V V_F; DO-201AD axial lead, not SMD	Requires through-hole assembly; incompatible with automated SMT placement	Choose only for legacy through-hole designs where rework to SMD is impractical

Compared with VS-50WQ03FNTR-M3 and SB5200-E3/54, the SK520C uniquely combines 200 V blocking, SMD DO-214AB footprint, and 0.95 V forward drop-enabling compact, high-efficiency, fully automated production of mid-voltage power supplies without layout or process compromise.

Availability

SK520C is available at Aetrix Electronics and suitable for switching mode power supplies, LED lighting drivers, and telecom DC/DC converters requiring stable component supply, consistent parametric performance, and long-term manufacturing continuity.

Supply support for SK520C 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 rectifiers, TVS devices, and MOSFETs for industrial and consumer markets.

The SK5xC series was developed specifically for high-reliability, high-volume surface-mount power conversion-emphasizing low V_F, robust surge tolerance, and JEDEC-compliant packaging for automated manufacturing.

FAQ

What is the maximum junction temperature rating for the SK520C?

The SK520C has a maximum junction temperature (T_J) rating of +150°C, verified per absolute maximum ratings table in the official TSC datasheet revision S2311. This allows uninterrupted operation in thermally demanding environments such as enclosed LED drivers or sealed telecom power modules. The SK520C must be mounted on a PCB with adequate copper area to maintain T_J ≤ 150°C under full 5 A load.

Does the SK520C have a specified reverse recovery time (t_rr)?

No-the SK520C is a Schottky barrier rectifier and does not specify reverse recovery time (t_rr) because it operates via majority-carrier conduction with no minority-carrier storage delay. Its near-zero t_rr eliminates switching losses associated with conventional PN-junction diodes, making the SK520C especially effective in high-frequency SMPS topologies above 100 kHz.

What is the forward voltage (V_F) of the SK520C at 5 A and 125°C?

The SK520C forward voltage at 5 A and 125°C is not explicitly tabulated in the datasheet, but curve Fig.10 shows typical V_F ≈ 0.82 V under those conditions. This value is derived from the published forward characteristics plot for SK515–520C group at TJ = 125°C, confirming reduced conduction loss at elevated temperatures versus room-temperature measurement.

Is the SK520C halogen-free and RoHS compliant?

Yes-the SK520C is both halogen-free and RoHS compliant, as confirmed in the "Features" section of the TSC datasheet (Version S2311). These compliance statements apply specifically to the SK520C ordering variant and are validated per IEC 61249-2-21 and EU Directive 2011/65/EU, supporting export to EU, Japan, and other regulated markets.

What is the moisture sensitivity level (MSL) of the SK520C?

The SK520C has a moisture sensitivity level (MSL) of Level 1 per J-STD-020, meaning it may be stored indefinitely at ≤30°C/60% RH and requires no baking prior to reflow soldering. This MSL rating applies to the DO-214AB (SMC) packaged SK520C and simplifies SMT line integration without dry-pack or floor-life tracking.

SK520C 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):: 200 V

Current - Average Rectified (Io):: 5A

Voltage - Forward (Vf) (Max) @ If:: 950 mV @ 5 A

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

Reverse Recovery Time (trr):: -

Current - Reverse Leakage @ Vr:: 300 µA @ 200 V

Capacitance @ Vr, F:: -

Grade:: -

Qualification:: -

Mounting Type:: Surface Mount

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

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

SK520C FAQ

1.How can I place an order for SK520C through Aetrix?

Please submit a Request for Quotation (RFQ) for SK520C 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 SK520C reliable?

The price and inventory of SK520C are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SK520C is usually 5 days.

3.What payment methods are accepted for SK520C?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SK520C transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for SK520C?

SK520C orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your SK520C 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 SK520C?

For technical support, including SK520C datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SK520C requirements.

6.How does Aetrix verify that SK520C is sourced from the original manufacturer or authorized distributors?

All SK520C 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 SK520C meets industry standards.

7.What is the process for return or replacement of SK520C?

All SK520C units undergo pre-shipment inspection (PSI). If there is an issue with SK520C, 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 SK520C part is unused and in its original packaging.

Return procedure for SK520C:

1.Submit a request within 90 days.

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

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