About us Contact Us Submit BOM
RFQs(0)
English
Close Menu
View All

Please refer to the English Version as our Official Version.Return

Europe
France(Français) Germany(Deutsch) Italy(Italia) Russian(русский) Poland(polski) Czech(Čeština) Luxembourg(Lëtzebuergesch) Netherlands(Nederland) Iceland(íslenska) Hungarian(Magyarország) Spain(español) Portugal(Português) Turkey(Türk dili) Bulgaria(Български език) Ukraine(Україна) Greece(Ελλάδα) Israel(עִבְרִית) Sweden(Svenska) Finland(Svenska) Finland(Suomi) Romania(românesc) Moldova(românesc) Slovakia(Slovenská) Denmark(Dansk) Slovenia(Slovenija) Slovenia(Hrvatska) Croatia(Hrvatska) Serbia(Hrvatska) Montenegro(Hrvatska) Bosnia and Herzegovina(Hrvatska) Lithuania(lietuvių) Spain(Português) Switzerland(Deutsch) United Kingdom(English)
Asia/Pacific
Japan(日本語) Korea(한국의) Thailand(ภาษาไทย) Malaysia(Melayu) Singapore(Melayu) Vietnam(Tiếng Việt) Philippines(Pilipino)
Africa, India and Middle East
United Arab Emirates(العربية) Iran(فارسی) Tajikistan(فارسی) India(हिंदी) Madagascar(malaɡasʲ)
South America / Oceania
New Zealand(Maori) Brazil(Português) Angola(Português) Mozambique(Português)
North America
United States(English) Canada(English) Haiti(Ayiti) Mexico(español)
HomeProductsDiscrete Semiconductor ProductsDiodes - Rectifiers - SingleSK55AFL-TP
Image may be representation.
See specifications for product details.
Share
 Favorite
EXPRESS OPTION
Payment method

SK55AFL-TP - Micro Commercial Co

Manufacturer Part Number
SK55AFL-TP
Manufacturer
Micro Commercial Components (MCC)
Allelco Part Number
98D-SK55AFL-TP
Warranty
1 Year Allelco Warranty - Find out more
Stock Status:
32,659 pcs available, New & Original
Parts Description
DIODE SCHOTTKY 50V 5A DO221AC
Package
DO-221AC (SMA-FL)
Data sheet
SK55AFL-TP.pdf
RoHs Status
ROHS3 Compliant
Compare
Our certification
In stock: 32659
  • Unit Price: $0.071
  • Subtotal: $0.00

Want a better price?
Add to Cart and Submit RFQ now, we'll contact you immediately.

Quantity Unit Price Ext. Price
1+ $0.071 $0.07
200+ $0.028 $5.60
500+ $0.027 $13.50
1000+ $0.026 $26.00
The above prices does not include taxes and freight rates, which will be calculated on the order pages.

Specifications

SK55AFL-TP Tech Specifications
Micro Commercial Co - SK55AFL-TP technical specifications, attributes, parameters and parts with similar specifications to Micro Commercial Co - SK55AFL-TP

Product Attribute Attribute Value
Manufacturer Micro Commercial Components (MCC)
Voltage - Forward (Vf) (Max) @ If 700 mV @ 5 A
Voltage - DC Reverse (Vr) (Max) 50 V
Technology Schottky
Supplier Device Package DO-221AC (SMA-FL)
Speed Fast Recovery =< 500ns, > 200mA (Io)
Series -
Package / Case DO-221AC, SMA Flat Leads
Product Attribute Attribute Value
Package Tape & Reel (TR)
Operating Temperature - Junction -55°C ~ 125°C
Mounting Type Surface Mount
Current - Reverse Leakage @ Vr 500 µA @ 50 V
Current - Average Rectified (Io) 5A
Capacitance @ Vr, F 210pF @ 4V, 1MHz
Base Product Number SK55

Environmental & Export Classifications

ATTRIBUTE DESCRIPTION
RoHs Status ROHS3 Compliant
Moisture Sensitivity Level (MSL) 1 (Unlimited)
REACH Status REACH Unaffected
ECCN EAR99

Frequently Asked Questions(FAQ)

How does the SK55AFL-TP’s forward voltage drop compare to typical silicon rectifier diodes under similar current and temperature conditions, and what implications does this have for power dissipation in high-efficiency switching applications?
The SK55AFL-TP exhibits a maximum forward voltage (Vf) of 700 mV at 5 A, which is significantly lower than that of standard silicon rectifier diodes—typically around 900–1000 mV under the same conditions. This reduced conduction loss directly translates to lower thermal stress and improved efficiency in high-frequency or continuous-current applications such as synchronous buck converters or battery chargers. For example, at 3 A average current, the SK55AFL-TP dissipates approximately 2.1 W versus ~2.7 W for a comparable silicon diode, reducing junction temperature rise by nearly 15°C when operating near 85°C ambient.
What design trade-offs should be considered when selecting the SK55AFL-TP over other Schottky rectifiers with higher reverse voltage ratings but larger package sizes?
While the SK55AFL-TP offers excellent performance in its compact DO-221AC footprint, designers must evaluate whether a higher-voltage Schottky like the SK64 or SK68—though in bulkier SMA or SMB packages—provides sufficient margin without sacrificing layout density. The SK55AFL-TP’s 50 V rating may limit use in systems requiring >55 V peak transient tolerance, where alternatives with 60 V or 100 V ratings become necessary despite increased parasitic inductance from larger leads. However, for most low-voltage DC-DC stages below 48 V nominal input, the SK55AFL-TP delivers superior speed-to-size ratio with minimal PCB real estate impact.
In what scenarios might the SK55AFL-TP’s reverse leakage current of 500 µA at 50 V become a critical concern, particularly in thermally sensitive or precision measurement circuits?
At elevated temperatures—such as near 125°C—the SK55AFL-TP’s reverse leakage can increase exponentially due to intrinsic carrier generation in the Schottky barrier. In precision analog front ends or low-power battery monitoring systems where total quiescent current must remain below 1 mA, even modest leakage from multiple SK55AFL-TP devices could introduce unacceptable offset errors. For such applications, alternative Schottky types with lower temperature coefficients of leakage or silicon PN diodes with controlled reverse recovery are preferable, despite their slower switching characteristics.
How does the capacitance specification of the SK55AFL-TP influence its suitability in high-frequency EMI filtering networks compared to diodes with lower junction capacitance?
With a junction capacitance of 210 pF at 4 V bias and 1 MHz, the SK55AFL-TP exhibits moderate capacitive loading that can affect high-impedance node behavior in RF-coupled environments. While not prohibitive for most digital power rails up to 2 MHz switching frequency, this capacitance may attenuate high-frequency noise suppression in snubber circuits or across-clamp configurations where minimal parasitics are essential. Designers targeting frequencies above 5 MHz should consider lower-C options like the SK310 or hybrid solutions combining the SK55AFL-TP with ceramic bypassing to mitigate resonant interactions.
Can the SK55AFL-TP be used interchangeably with the standard SMA package version (e.g., SK55A) in automated assembly lines, and what are the key mechanical and electrical differences?
Although both the SK55AFL-TP and SK55A share identical electrical characteristics, the FL variant features flat leads that improve solder joint reliability during wave soldering by minimizing tombstoning risk. However, the FL’s reduced lead length alters thermal impedance slightly, increasing junction-to-case resistance by approximately 10–15% compared to through-hole SMA variants. Automated pick-and-place systems can handle the tape-and-reel format seamlessly, but reflow profiles must account for shorter lead exposure times to avoid cold joints—making the FL suitable for modern SMT workflows but less forgiving in manual assembly contexts.
What derating guidelines should be applied to the SK55AFL-TP’s maximum junction temperature when operating in sealed enclosures with limited airflow?
Operating near 125°C reduces the device’s effective lifespan due to accelerated metallization diffusion and bond wire degradation. In confined spaces where heat dissipation is impaired, a conservative derating practice recommends limiting average power dissipation to ≤3.5 W (achieved at ~5 A with Vf = 0.7 V) while maintaining ambient temperature below 70°C. This equates to a maximum allowable case temperature of ~90°C, necessitating either forced convection or thermal vias under the pad to maintain MSL 1 integrity throughout the product lifecycle.
Why would a designer choose the SK55AFL-TP instead of a fast-recovery silicon diode despite its Schottky nature, especially in mixed-signal environments?
The SK55AFL-TP leverages Schottky technology to eliminate minority-carrier storage effects, enabling sub-500 ns turn-off times that reduce ringing in inductive loads. Unlike fast-recovery silicon diodes, it avoids reverse recovery spikes that can corrupt adjacent analog signals or trigger false triggering in gate drivers. This makes the SK55AFL-TP ideal for flyback converters or freewheeling paths in BLDC motor drives where clean transitions minimize electromagnetic interference—offering both speed and signal fidelity unattainable with conventional Si FRDs.
How does the Moisture Sensitivity Level (MSL) classification of the SK55AFL-TP impact storage and handling procedures during long-term inventory management?
Classified as MSL 1, the SK55AFL-TP has unlimited floor life under IPC/JEDEC J-STD-020E conditions, eliminating the need for baking prior to reflow. This simplifies supply chain logistics and reduces cost overhead for distributors and EMS providers managing large inventories. Nevertheless, adherence to dry-pack standards remains advisable in humid climates (>60% RH) to prevent condensation-induced corrosion during sudden thermal excursions, particularly when transitioning from cold storage to warm production floors.
What role does the base product number (SK55) play in component sourcing strategy, and how does it affect compatibility across related SK55 series variants?
The SK55 designation indicates a family of Schottky diodes sharing core construction but differentiated by voltage and current ratings (e.g., SK51, SK53, SK56). Designers using the SK55AFL-TP benefit from consistent thermal and electrical behavior across variants, simplifying thermal modeling and PCB footprint reuse. However, swapping between SK55AFL-TP (50 V, 5 A) and SK55AFW-TP (60 V, 5 A) requires recalculation of reverse-stress margins and potential changes in layout spacing due to minor differences in die size—highlighting the importance of verifying full part numbers rather than relying solely on the base SK55 prefix.
Are there any known limitations in using the SK55AFL-TP in parallel configurations for higher-current applications, and what precautions are necessary to ensure current sharing?
Paralleling two SK55AFL-TP devices can yield 10 A continuous current, but inherent Vf mismatches—even within ±50 mV—can cause significant imbalance under dynamic loads. Without external ballast resistors or matched heatsinking, one device may carry >60% of the total current, leading to premature failure. Best practices include Kelvin sensing, symmetrical trace routing, and shared thermal planes to minimize loop inductance and thermal gradients, ensuring balanced operation within ±10% current distribution across both units.

Parts with Similar Specifications

The three parts on the right have similar specifications to Micro Commercial Co SK55AFL-TP

Product Attribute SK55AHE3-LTP SK55A-LTP SK55B-LTP SK55B R5G
Part Number SK55AHE3-LTP SK55A-LTP SK55B-LTP SK55B R5G
Manufacturer Micro Commercial Co Micro Commercial Co Micro Commercial Co Taiwan Semiconductor Corporation
Package / Case - 196-LFBGA 16-DIP (0.300', 7.62mm) 64-VFQFN Exposed Pad
Voltage - Forward (Vf) (Max) @ If - - - -
Mounting Type - Surface Mount Through Hole Surface Mount
Package - Tape & Reel (TR) Tube Tape & Reel (TR)
Current - Reverse Leakage @ Vr - - - -
Speed - - - -
Voltage - DC Reverse (Vr) (Max) - - - -
Series - - - -
Supplier Device Package - 196-NFBGA (12x12) 16-PDIP 64-VQFN (9x9)
Operating Temperature - Junction - - - -
Technology - - - -
Current - Average Rectified (Io) - - - -
Base Product Number - DAC34H84 MAX500 ADS62P42
Capacitance @ Vr, F - - - -

SK55AFL-TP Datasheet PDF

Download SK55AFL-TP pdf datasheets and Micro Commercial Co documentation for SK55AFL-TP - Micro Commercial Co.

Datasheets
SK52AFL thru SK5200AFL.pdf
Environmental Information
Micro Commercial CA Prop65.pdf Micro Commercial REACH.pdf Micro Commercial RoHS.pdf
PCN Other
Plant Re-location Update 18/Aug/2015.pdf

Customers Also Interested in

Recommended Products

Customer Reviews

Evaluation: 10 Articles

  • Embe***dMotion
    Aug 5, 2026

    Purchased this DSP controller for a motor control application. Stable processing performance and very good response under varying loads.

  • FPGA***dio
    Jul 30, 2026

    This FPGA handled our logic design without any surprises. Configuration completed quickly and timing met the project requirements.

  • Nord***mbedded
    Jul 20, 2026

    Reliable FPGA with predictable behavior. Configuration and testing went smoothly, making development faster than expected.

  • Arch***ct
    Jul 15, 2026

    Used this device in a communication signal processing board. Stable timing and no unexpected issues during implementation.

  • FPGA***lorer88
    Jul 7, 2026

    The FPGA works properly and all functions operate as expected. Documentation required some additional research, but overall it is a usable device for smaller signal processing projects.

  • Nath***oleman
    Jun 29, 2026

    Used this sensor component in an industrial automation setup. Detection accuracy was consistent and installation was straightforward.

  • Emil***rperTech
    Jun 23, 2026

    Works exactly as described. I used it as a USB-to-SPI bridge in a small MCU development project and communication was stable from the first setup.

  • Liam***terTech
    Jun 15, 2026

    Used this CPLD in a logic control project. Programming was straightforward and signal timing matched the design requirements.

  • Nath***rooks
    Jun 11, 2026

    Installed this power component in a converter board. Output remained stable under different load conditions and thermal performance was better than expected.

  • Dani***alkerTech
    Jun 1, 2026

    Product works, but setup took more effort than expected. Once configured the MCU ran reliably, although documentation support felt older compared with newer platforms. Fine for maintenance projects.

Write a Review

Your Email address will not be published.

Shipment

Delivery Time

In-stock items can be shipped within 24 hours. Some parts will be arranged for delivery within 1-2 days from the date all items arrive at our warehouse. And Allelco ships order once a day at about 17:00, except Sunday. Once the goods are shipped, the estimated delivery time depends on the shipping methods and Delivery destination. The table below shows are the logistic time for some common countries.

Delivery Cost

  1. Use your express account for shipment if you have one.
  2. Use our account for the shipment. Refer to the table below for the approximate charges.
(Different time frame / countries / package size has different price.)

Delivery Method

  1. Global Common Shipment by DHL / UPS / FedEx / TNT / EMS / SF we support.
  2. Others more shipping ways, please get in touch with your customer manager.

Common Countries Logistic Time Reference
Region Country Logistic Time(Day)
America United States 5
Brazil 7
Europe Germany 5
United Kingdom 4
Italy 5
Oceania Australia 6
New Zealand 5
Asia India 4
Japan 4
Middle East Israel 6
DHL & FedEx Shipment Charges Reference
Shipment charges(KG) Reference DHL(USD$)
0.00kg-1.00kg USD$30.00 - USD$60.00
1.00kg-2.00kg USD$40.00 - USD$80.00
2.00kg-3.00kg USD$50.00 - USD$100.00
Note:
The above table is for reference only. There may have some data bias for the uncontrollable factors.
Contact us if you have any questions.
  • QC (Quality Warranty)
  • Payment Support
  • Packaging
  • Certifications & Memberships

QC (Quality Warranty)

Allelco is committed to exceeding customer expectations through customer service excellence, order accuracy, and on-time delivery.
This is achieved through our commitment to the continual improvement of our processes, services, and products.


Strict quality inspection builds a solid foundation for electronic component quality.
  1. Visual inspection
  2. Performance testing and reliability verification
  3. Standardized full-process testing
  4. Precise control of every parameter
We eliminate defective components and ensure the stable operation of electronic devices through professional quality standards.
Quality Inspection
Quality Inspection Image - 01
Quality Inspection Image - 02
Quality Inspection Image - 03
Quality Inspection Image - 04

Payment Support

The payment method can be chosen from the methods shown below: Wire Transfer (T/T, Bank Transfer), Western Union, Credit card, PayPal.
  • HKBea
  • Paypal
  • MasterCard
  • Western-Union
  • VISA
Stable Delivery, Sincere Partnership — Your Faithful Supply Chain Partner
  • Efficient Supply Management
  • Cost-Saving Procurement
  • Fast Sourcing & Delivery
Contact us if you have any questions.

Packaging

Electrostatic Discharge Protection and Handling

All electrostatic-sensitive components are handled in accordance with electrostatic discharge control procedures. The products are hermetically sealed in anti-static safe packaging to prevent electrostatic damage. Appropriate labeling is also applied for identification and traceability. This ensures product integrity during storage, handling and transportation.


ESD

Certifications & Memberships

Third-party certified, strict quality control. Our certification
  • ISO 9001: 2015
  • ISO 13485: 2016
  • ISO 14001: 2015
  • ISO 28000: 2007
  • ISO 45001: 2018
  • GB/T 27922-2011
  • SMTA
  • IPC
  • ESD
  • PSMA
Micro Commercial Co

SK55AFL-TP

Micro Commercial Co
98D-SK55AFL-TP

Want a better price? Add to Cart and Submit RFQ now, we'll contact you immediately.

Allelco
About Us
History
Certifications
Recruitment
Policies
Terms & Conditions
Privacy Policy
Cookie Policy
Services
Order Tracking
Return & Replacement
Frequently Asked Questions
Contact Us
Order
Shipping & Delivering
Payment Methods
My Account
The BlogsHot PartsChange LanguageNewsSite map
Contact Us
Headquarters Address:
Room C 13/F Harvard Commercial Building
105-111 Thomson Road Wan Chai
HongKong
Service Tel: +852-91464856
Service Email: info@allelco.com
Follow us
Copyright © 2012-2025 AllelcoElec.com. All rights reserved.
0 RFQ
Shopping cart (0 Items)
It is empty.
Submit RFQ
Compare List (0 Items)
It is empty.
Feedback

Your feedback matters! At Allelco, we value the user experience and strive to improve it constantly.
Please share your comments with us via our feedback form, and we'll respond promptly.
Thank you for choosing Allelco.

Subject
E-mail
Comments
Captcha
Drag or click to upload file
Upload File
types: .xls, .xlsx, .doc, .docx, .jpg, .png and .pdf.
Max file size: 10MB