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 - SingleLFUSCD04065A
Image may be representation.
See specifications for product details.
Share
 Favorite
EXPRESS OPTION
Payment method

LFUSCD04065A - Littelfuse Inc.

Manufacturer Part Number
LFUSCD04065A
Manufacturer
Littelfuse
Allelco Part Number
98D-LFUSCD04065A
Warranty
1 Year Allelco Warranty - Find out more
Stock Status:
4,074 pcs available, New & Original
Parts Description
DIODE SIL CARB 650V 4A TO220AC
Package
TO-220AC
Data sheet
LFUSCD04065A.pdf
RoHs Status
ROHS3 Compliant
Compare
Our certification
In stock: 4074

Required fields are indicated by an asterisk (*)
Please send RFQ, we will respond immediately.

Quantity

Specifications

LFUSCD04065A Tech Specifications
Littelfuse Inc. - LFUSCD04065A technical specifications, attributes, parameters and parts with similar specifications to Littelfuse Inc. - LFUSCD04065A

Product Attribute Attribute Value
Manufacturer Littelfuse
Voltage - Forward (Vf) (Max) @ If 1.7 V @ 4 A
Voltage - DC Reverse (Vr) (Max) 650 V
Technology SiC (Silicon Carbide) Schottky
Supplier Device Package TO-220AC
Speed No Recovery Time > 500mA (Io)
Series -
Reverse Recovery Time (trr) 0 ns
Product Attribute Attribute Value
Package / Case TO-220-2
Package Tube
Operating Temperature - Junction 175°C (Max)
Mounting Type Through Hole
Current - Reverse Leakage @ Vr 170 µA @ 650 V
Current - Average Rectified (Io) 4A
Capacitance @ Vr, F 125pF @ 1V, 1MHz

Environmental & Export Classifications

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

Frequently Asked Questions(FAQ)

What are the key performance advantages of the LFUSCD04065A silicon carbide (SiC) Schottky diode over traditional silicon rectifiers in high-efficiency power conversion applications?
The LFUSCD04065A leverages SiC technology to deliver significantly lower forward voltage drop—1.7 V at 4 A—compared to typical silicon diodes, which often exceed 2.0 V under similar conditions. This reduction directly translates into lower conduction losses and improved system efficiency, especially in continuous current paths. Additionally, its zero reverse recovery time eliminates switching losses during turn-off, a major source of inefficiency in hard-switched topologies like boost or buck converters. These characteristics make it ideal for applications such as solar inverters, motor drives, and battery chargers where thermal management and energy savings are critical.
How does the LFUSCD04065A compare to standard silicon Schottky diodes like the STPSC4H065D in terms of leakage current and thermal stability?
Unlike silicon Schottky devices such as the STPSC4H065D, the LFUSCD04065A exhibits a reverse leakage current of only 170 µA at 650 V, which is orders of magnitude lower than silicon counterparts that can exceed several mA at elevated temperatures. This minimal leakage reduces power dissipation in high-voltage blocking states, particularly beneficial in high-temperature environments. Furthermore, the LFUSCD04065A maintains stable electrical performance up to a junction temperature of 175°C, whereas silicon Schottkys typically degrade significantly above 125°C due to increased intrinsic carrier concentration, making the SiC device more reliable in thermally demanding designs.
In what scenarios would replacing the LFUSCD04065A with a higher-capacitance alternative compromise switching performance in resonant or soft-switching circuits?
While the LFUSCD04065A offers a junction capacitance of just 125 pF at 1 V and 1 MHz, selecting a diode with substantially higher capacitance—such as some planar-junction silicon types—can introduce unacceptable parasitic effects in resonant half-bridge or LLC converter topologies. Increased charge storage during reverse bias transitions leads to longer dead times and degraded ZVS (zero-voltage switching) margins. For example, doubling the capacitance could increase switching loss by up to 30% in a 200 kHz design, negating the benefits of low trr. Therefore, maintaining low Qrr and Cj is essential for preserving resonance quality factor and overall efficiency.
Can the LFUSCD04065A be used interchangeably with the C3D10065A in a TO-220AC footprint without modifications to thermal or electrical design?
Although both the LFUSCD04065A and C3D10065A are 650 V, 4 A SiC Schottky diodes in a TO-220AC package, they differ in critical parameters. The C3D10065A typically has a higher forward voltage drop (around 1.9–2.1 V @ 4 A) and may exhibit slightly elevated leakage at high temperatures. Replacing one for the other without reevaluating PCB copper area, heatsink attachment, and layout parasitics risks exceeding thermal limits or reducing efficiency. Careful validation of junction temperature rise under worst-case load and ambient conditions is necessary before assuming interchangeability.
What impact does the LFUSCD04065A’s extremely low reverse recovery time have on EMI performance in PWM-based DC-DC converters?
The LFUSCD04065A’s trr of 0 ns eliminates reverse recovery spikes that generate high-frequency noise bursts during commutation. These spikes are common in silicon rectifiers and contribute significantly to conducted and radiated EMI near switching edges. By minimizing discontinuous current transitions, the LFUSCD04065A helps reduce peak dv/dt and di/dt stresses on adjacent components, easing compliance with standards such as CISPR 22/25. However, proper PCB grounding and filtering remain essential, as other factors—like parasitic inductance in traces—still dominate EMI behavior at frequencies above 10 MHz.
Is the LFUSCD04065A suitable for operation in environments with frequent thermal cycling, given its Moisture Sensitivity Level (MSL) rating?
Yes, the LFUSCD04065A carries an MSL rating of 1, indicating unlimited shelf life and no requirement for drying prior to reflow or wave soldering. This makes it robust against moisture-induced defects during assembly. Its ceramic-free construction and robust metallization also enhance reliability under thermal cycling between -55°C and +175°C, provided mechanical stress from differential expansion is minimized through proper mounting practices—such as using thermal interface material and avoiding overtightening.
How should the LFUSCD04065A be evaluated when substituting it into legacy systems originally designed around fast-recovery silicon diodes like UF4007?
Direct substitution of the LFUSCD04065A for a UF4007 may improve efficiency due to lower Vf and zero trr, but requires reassessment of circuit dynamics. Legacy controllers relying on specific snubber networks or timing margins calibrated to silicon recovery behavior might experience instability. For instance, a flyback converter optimized for a 500 ns trr part could see improved transient response with the LFUSCD04065A, but EMI shielding and input filtering may need refinement to handle reduced high-frequency ringing. Full bench testing under load transients and variable line conditions is strongly advised.
What are the implications of the LFUSCD04065A’s RoHS3 compliance for global manufacturing and export considerations?
RoHS3 compliance ensures the LFUSCD04065A meets updated European Union restrictions on hazardous substances, including stricter limits on DEHP, BBP, DBP, and HBCDD. This facilitates unrestricted use across EU markets and simplifies supply chain documentation. Combined with an ECCN classification of EAR99 and HTSUS code 8541.10.0080, the component avoids complex export licensing requirements, supporting seamless integration into products destined for North America, Europe, and Asia without trade barriers.
Why might a designer choose the LFUSCD04065A over discrete solutions based on multiple series-connected silicon diodes despite its unit cost?
While multiple silicon diodes in series can approach 650 V ratings, achieving uniform current sharing demands precise matching and increases layout complexity. The LFUSCD04065A provides a single-device solution with guaranteed avalanche ruggedness, consistent Vf, and negligible leakage mismatch. At 4 A average current, even a 10% variation in series silicon diodes can cause localized heating and derating. In contrast, the LFUSCD04065A’s monolithic structure ensures balanced conduction, simplifying thermal design and improving Mean Time Between Failure (MTBF) in mission-critical systems.
How does the LFUSCD04065A perform under partial conduction or pulse-load conditions compared to continuous-rated alternatives?
The LFUSCD04065A is rated for 4 A average rectified current, but its fast switching and low thermal mass allow it to handle short-duration overloads common in pulsed loads—such as inductive kickback or startup surges—without degradation. However, designers must ensure that instantaneous power (Vf × Ipeak) does not exceed safe operating limits derived from SOA (Safe Operating Area) curves. For example, a 10 A spike lasting 50 µs may be acceptable if junction temperature remains below 150°C, but repeated pulses require careful duty cycle analysis and heatsinking.
What role does the junction-to-case thermal resistance play in determining maximum allowable power dissipation for the LFUSCD04065A in natural convection cooling?
Though not explicitly listed in the datasheet snippet, typical TO-220AC packages for SiC diodes have junction-to-case thermal resistance around 2.5–3.5°C/W. Coupled with the 175°C max junction temperature and 1.7 V forward drop, this implies a theoretical maximum power dissipation of approximately 40–50 W under perfect heat sinking. In natural convection, where case-to-ambient may be 50–80°C/W, the usable continuous current drops significantly—often to 1.5–2 A—emphasizing the need for active cooling or forced airflow in compact enclosures.
Are there any known limitations or failure modes associated with the LFUSCD04065A when subjected to rapid voltage transients beyond its 650 V rating?
While the LFUSCD04065A is specified for 650 V operation, exceeding this value—even briefly—can trigger avalanche breakdown. Although SiC devices are more robust than silicon in this regard, uncontrolled avalanche events without current limiting can lead to thermal runaway due to positive temperature coefficient of resistance in the drift region. Proper PCB layout, snubber circuits, and adherence to IEC 61000-4-5 surge immunity standards are essential to prevent catastrophic failure during lightning or switching surges.

Parts with Similar Specifications

The three parts on the right have similar specifications to Littelfuse Inc. LFUSCD04065A

Product Attribute LFUSCD06065A LFUSCD10065A LFUSCD08065A LFUSCD20065B
Part Number LFUSCD06065A LFUSCD10065A LFUSCD08065A LFUSCD20065B
Manufacturer Hamlin / Littelfuse Littelfuse Inc. Littelfuse Inc. Littelfuse Inc.
Speed - - - -
Supplier Device Package - 196-NFBGA (12x12) 16-PDIP 64-VQFN (9x9)
Technology - - - -
Reverse Recovery Time (trr) - - - -
Package - Tape & Reel (TR) Tube Tape & Reel (TR)
Voltage - DC Reverse (Vr) (Max) - - - -
Voltage - Forward (Vf) (Max) @ If - - - -
Current - Reverse Leakage @ Vr - - - -
Mounting Type - Surface Mount Through Hole Surface Mount
Package / Case - 196-LFBGA 16-DIP (0.300', 7.62mm) 64-VFQFN Exposed Pad
Capacitance @ Vr, F - - - -
Operating Temperature - Junction - - - -
Series - - - -
Current - Average Rectified (Io) - - - -

LFUSCD04065A Datasheet PDF

Download LFUSCD04065A pdf datasheets and Littelfuse Inc. documentation for LFUSCD04065A - Littelfuse Inc..

Datasheets
LFUSCD04065A Datasheet.pdf

Customers Also Interested in

Recommended Products

Customer Reviews

Evaluation: 10 Articles

  • Nikh***ech
    Aug 13, 2026

    Great low-power MCU for portable equipment. Flash programming was simple and current consumption matched the datasheet.

  • 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.

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
Littelfuse Inc.

LFUSCD04065A

Littelfuse Inc.
98D-LFUSCD04065A

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