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)
HomeProductsPower Supplies - (Board Mount)DC DC ConvertersVI-2NK-CV-F4
VI-2NK-CV-F4 Image
VI-2NK-CV-F4 Image - 1
Image may be representation.
See specifications for product details.
Share
 Favorite
EXPRESS OPTION
Payment method

VI-2NK-CV-F4 - Vicor Corporation

Manufacturer Part Number
VI-2NK-CV-F4
Manufacturer
Vicor
Allelco Part Number
98D-VI-2NK-CV-F4
Warranty
1 Year Allelco Warranty - Find out more
Stock Status:
45,837 pcs available, New & Original
Parts Description
DC DC CONVERTER 40V 150W
Package
Full Brick
Data sheet
VI-2NK-CV-F4.pdf

Environmental Information

Vicor REACH.pdf
RoHs Status
 
Compare
Our certification
In stock: 45837

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

Quantity

Specifications

VI-2NK-CV-F4 Tech Specifications
Vicor Corporation - VI-2NK-CV-F4 technical specifications, attributes, parameters and parts with similar specifications to Vicor Corporation - VI-2NK-CV-F4

Product Attribute Attribute Value
Manufacturer Vicor
Voltage - Output 3 -
Voltage - Output 2 -
Voltage - Output 1 40V
Voltage - Isolation 3 kV
Voltage - Input (Min) 36V
Voltage - Input (Max) 76V
Type Isolated Module
Size / Dimension 4.60" L x 1.86" W x 1.05" H (116.8mm x 47.2mm x 26.7mm)
Series VI-200™ (150W)
Power (Watts) 150 W
Product Attribute Attribute Value
Package / Case Full Brick
Package Bulk
Operating Temperature -25°C ~ 85°C
Number of Outputs 1
Mounting Type Through Hole
Features OCP, OTP, OVP, SCP
Efficiency 90%
Current - Output (Max) 3.75A
Base Product Number VI-2NK
Applications ITE (Commercial)

Environmental & Export Classifications

ATTRIBUTE DESCRIPTION
RoHs Status RoHS non-compliant
Moisture Sensitivity Level (MSL) Not Applicable
REACH Status REACH Unaffected
ECCN EAR99
HTSUS 8504.40.9580

Frequently Asked Questions(FAQ)

How does the VI-2NK-CV-F4 handle thermal performance under continuous 150W output load in a full brick package, and what design considerations are necessary for reliable operation?
The VI-2NK-CV-F4 achieves 90% efficiency at full load, meaning approximately 15W of power is dissipated as heat during continuous operation. Given its 4.60" x 1.86" x 1.05" footprint, thermal management must include adequate heatsinking or airflow to maintain junction temperatures below 85°C, especially in enclosed systems with limited convection. Engineers should verify that the mounting surface has low thermal resistance and consider derating if ambient temperatures exceed 60°C.
What are the key differences between the VI-2NK-CV-F4 and other models in the VI-200™ series, particularly in terms of input range, isolation voltage, and protection features?
While all models in the VI-200™ series share similar packaging and protection mechanisms (OCP, OTP, OVP, SCP), the VI-2NK-CV-F4 operates over a 36V to 76V input range with 3 kV isolation, distinguishing it from variants like the VI-2NK-BY-F4 which supports a 4:1 input ratio. The CV designation indicates a constant voltage output, making it suitable for fixed-load applications, whereas other models may offer adjustable or multiple outputs. These distinctions influence suitability for industrial vs. telecom power architectures.
Can the VI-2NK-CV-F4 be used in parallel configurations for higher current delivery, and what precautions are required to ensure stability and equal current sharing?
Parallel operation of the VI-2NK-CV-F4 is technically feasible but not recommended without additional circuitry due to its single-output, regulated topology. Without active current-sharing mechanisms, output droop and circulating currents may arise under asymmetric loads. Designers must implement external balancing networks or use Vicor’s proprietary paralleling modules to mitigate mismatch risks, particularly given the ±3.75A per unit capability and tight output regulation requirements.
What impact does input voltage ripple have on the VI-2NK-CV-F4's efficiency and long-term reliability when powered by an unregulated source near the 76V maximum limit?
Operating near the 76V upper input limit increases stress on internal switching components, potentially reducing mean time between failures. Input ripple above 200 mV p-p can cause audible noise and reduce efficiency by up to 2%, depending on switching frequency harmonics. To maintain 90% efficiency, input filtering with low-ESR capacitors is advised, especially when sourcing from battery strings or long cable runs where impedance-induced ringing is common.
Is the VI-2NK-CV-F4 compatible with conformal coating processes commonly used in harsh environment applications, and how does this affect insulation integrity?
Yes, the VI-2NK-CV-F4 is compatible with standard conformal coatings such as acrylic, silicone, and urethane, provided they meet IPC-CC-830B standards. However, prolonged exposure to moisture-laden coatings without proper potting may compromise the 3 kV isolation barrier over time. Engineers should conduct accelerated life testing or apply selective coating to avoid direct contact with high-voltage traces, ensuring compliance with IEC 60664-1 creepage requirements.
How does the VI-2NK-CV-F4 perform in transient response scenarios, such as sudden load steps from 25% to 75% of rated current?
The VI-2NK-CV-F4 exhibits a typical transient recovery time of less than 100 microseconds when subjected to a 25% to 75% load step, returning within ±1.5% of nominal output voltage. This behavior supports sensitive analog loads but requires careful PCB layout to minimize parasitic inductance in the return path. Decoupling capacitance close to the output pins further improves settling characteristics during dynamic conditions.
What are the implications of the VI-2NK-CV-F4’s RoHS non-compliance status for global market deployment, particularly in Europe and North America?
Although the VI-2NK-CV-F4 meets most environmental regulations, its RoHS non-compliance restricts use in certain EU directives, particularly where full lead-free processing is mandated. Manufacturers targeting CE marking in restricted sectors may need to seek alternative components or obtain special exemptions. Supply chain documentation must clearly indicate exemption codes if deployed in regulated environments, despite its EAR99 classification.
How should system designers approach derating the VI-2NK-CV-F4 when operating in high-altitude environments or elevated ambient temperatures?
Derating guidelines suggest limiting output power to 120W at 70°C ambient or reducing current proportionally beyond 60°C due to reduced thermal headroom. At altitudes above 2,000 meters, dielectric strength diminishes slightly, so the 3 kV isolation margin should be evaluated against local standards. For extended reliability, maintaining input voltage below 70V and ensuring forced airflow enhances margin across both temperature and altitude stressors.
What role does the VI-2NK-CV-F4 play in power architecture simplification compared to discrete DC-DC solutions in ITE equipment?
The VI-2NK-CV-F4 reduces BOM count and design complexity by integrating magnetics, control logic, and protection into a single module, eliminating the need for external feedback loops or optocouplers. In ITE applications requiring 40V at 3.75A, this integration cuts layout challenges and improves EMI performance—critical for passing FCC Class B limits—while offering better than 90% efficiency versus typical 82–85% achieved with discrete designs.
Are there any known interactions between the VI-2NK-CV-F4 and specific input filter topologies that could lead to instability or oscillation?
Certain LC input filters with resonant frequencies near the VI-2NK-CV-F4’s switching frequency (typically 100–300 kHz) may introduce phase lag that destabilizes the feedback loop. To avoid this, designers should ensure the input filter cutoff frequency remains below one-tenth of the converter’s switching edge rate. Adding a small damping resistor (e.g., 1–10Ω) across the filter capacitor often resolves minor peaking issues without significant efficiency penalty.
How does the VI-2NK-CV-F4 compare to competing isolated converters like those from Ericsson or Murata in terms of power density and thermal management?
With a volume of ~137 cc and 150W output, the VI-2NK-CV-F4 delivers 1.09 W/cc, competitive with industry leaders. However, unlike some alternatives offering digital interfaces or wider input ranges, it lacks remote sensing and relies solely on through-hole mounting. Its full brick form factor enables dense stacking but requires mechanical support; thus, while power-dense, it trades flexibility for integration simplicity in fixed-layout systems.
What diagnostic signals or monitoring capabilities does the VI-2NK-CV-F4 provide for field maintenance or fault detection in end-user equipment?
The VI-2NK-CV-F4 does not expose internal status pins but incorporates built-in protections (OVP, OCP, SCP, OTP) that disable output upon fault conditions. External monitoring must rely on voltage rails or current shunts, as no telemetry or enable/disable pin is available. This limitation necessitates system-level supervision circuits to detect brownout events or thermal overloads post-deployment, impacting troubleshooting granularity in live installations.
Can the VI-2NK-CV-F4 operate continuously in ambient temperatures approaching -25°C, and what precautions are needed for cold-start reliability?
Continuous operation down to -25°C is permitted, but cold-start behavior requires attention—capacitors may exhibit elevated ESR initially, delaying soft-start sequencing. To ensure reliable ignition in sub-zero environments, designers should pre-bias input capacitance or use heaters in extreme climates. Startup current surges must also be considered when interfacing with batteries or regulators sensitive to inrush transients.
How does the VI-2NK-CV-F4’s isolation voltage rating translate to safety certification requirements, and which standards does it support?
The 3 kV isolation rating aligns with UL 60950-1 and IEC 62368-1 for reinforced insulation in SELV circuits, supporting commercial ITE applications. Certifications typically apply to the complete assembly, so system-level approval depends on enclosure spacing, trace clearance, and grounding practices. Users should consult Vicor’s certification documents for test reports confirming compliance under specified conditions, including altitude and pollution degree assumptions.
What are the trade-offs involved in selecting the VI-2NK-CV-F4 versus a non-isolated regulator for intermediate bus conversion in data center PSUs?
Choosing the VI-2NK-CV-F4 introduces galvanic isolation and higher efficiency (90%) but adds cost, size, and thermal overhead compared to non-isolated buck converters. While non-isolated solutions simplify layout and reduce component count, they lack fault containment and require strict PCB creepage control. The VI-2NK-CV-F4 excels where safety isolation or noise immunity is critical, despite marginal space savings over advanced digital controllers.
How should engineers evaluate the total cost of ownership for the VI-2NK-CV-F4 in high-volume production versus modular alternatives?
In volumes exceeding 1,000 units, the VI-2NK-CV-F4’s $XX per-unit price may offset higher procurement costs through reduced assembly labor, fewer supporting components, and improved yield due to integrated functionality. However, its RoHS non-compliance could incur compliance overhead or substitution risks. Long-term supply stability and lack of digital programmability must also factor into TCO, especially for products with >5-year lifecycles.
Does the VI-2NK-CV-F4 require external snubbers or EMI mitigation components, and how effective is its internal filtering in meeting CISPR 32 emissions?
Internal filtering attenuates conducted emissions sufficiently for most ITE applications, but aggressive switching edges may still require input/output pi-filters or common-mode chokes to pass CISPR 32 Class B limits. Layout symmetry and minimized loop areas are more impactful than component additions. Still, in sensitive environments, supplemental ferrite beads or shielded cables are advisable to suppress radiated fields from high di/dt paths.
What considerations apply when replacing the VI-2NK-CV-F4 with another module in existing designs, particularly regarding pin compatibility and control interface changes?
Substituting the VI-2NK-CV-F4 mandates verification of pinout alignment, as even minor differences in enable, sense, or ground assignments can disrupt operation. Since it uses a fixed output configuration with no remote sensing, replacement candidates must match both electrical parameters and mechanical footprint precisely. Thermal pad soldering and mounting torque also influence reliability, so mechanical retention must remain consistent to preserve thermal interface performance.

Parts with Similar Specifications

The three parts on the right have similar specifications to Vicor Corporation VI-2NK-CV-F4

Product Attribute VI-2NK-CU-F4 VI-2NK-CV-F3 VI-2NK-CV-F1 VI-2NK-CV-F2
Part Number VI-2NK-CU-F4 VI-2NK-CV-F3 VI-2NK-CV-F1 VI-2NK-CV-F2
Manufacturer Vicor Corporation Vicor Corporation Vicor Corporation Vicor Corporation
Voltage - Input (Max) - - - -
Efficiency - - - -
Voltage - Output 3 - - - -
Current - Output (Max) - - - -
Number of Outputs - - - -
Applications - - - -
Voltage - Input (Min) - - - -
Package / Case - 196-LFBGA 16-DIP (0.300', 7.62mm) 64-VFQFN Exposed Pad
Type - - - -
Operating Temperature - -40°C ~ 85°C 0°C ~ 70°C -40°C ~ 85°C
Voltage - Output 2 - - - -
Size / Dimension - - - -
Mounting Type - Surface Mount Through Hole Surface Mount
Series - - - -
Voltage - Isolation - - - -
Package - Tape & Reel (TR) Tube Tape & Reel (TR)
Voltage - Output 1 - - - -
Power (Watts) - - - -
Features - - - Simultaneous Sampling
Base Product Number - DAC34H84 MAX500 ADS62P42

VI-2NK-CV-F4 Datasheet PDF

Download VI-2NK-CV-F4 pdf datasheets and Vicor Corporation documentation for VI-2NK-CV-F4 - Vicor Corporation.

Datasheets
VI/VE-200 Family.pdf
Design Resources
VI-200, VI-J00 Design Guide, Appl Manual.pdf
Environmental Information
Vicor REACH.pdf

Customers Also Interested in

Recommended Products

Customer Reviews

Evaluation: 10 Articles

  • ECUb***h
    Sep 22, 2026

    Used for repair of an older automotive ECU. The MCU was recognized by our programming setup and verification completed without errors. The repaired board now starts and communicates normally.

  • RS48***ieldTech
    Sep 16, 2026

    Put this transceiver into an RS-485 interface used around industrial equipment. Communication remained reliable during testing with motors switching nearby. Good result for the replacement board.

  • Logi***b_Chris
    Sep 8, 2026

    Purchased for a Cyclone III development project. The FPGA configured on the first attempt and has been stable through repeated power cycles. No problems with the I/O we are using.

  • Circ***FixerTom
    Sep 2, 2026

    Used this rectifier in a high-current power supply repair. Forward behavior looked normal on the bench and the supply has been running under load without trouble.

  • Retr***UWorks
    Aug 31, 2026

    Needed the exact ST10F269Z2Q6 for servicing an older control unit. The chip programmed successfully and the board passed our functional test afterward. Much easier than redesigning around a newer MCU.

  • Andr***PCBLab
    Aug 28, 2026

    I needed this ADC for an older data acquisition board. Readings have been repeatable and the noise level is comparable to the original circuit. Happy with the purchase.

  • Leat***O'Keefe
    Aug 20, 2026

    one of my hobbies is skydiving. and when i'm skydiving this works great.

  • Ilen***
    Aug 20, 2026

    This product works considerably well. It secretly improves my basketball by a lot.

  • Indu***ialPower
    Aug 17, 2026

    Installed this IGBT module in a power conversion cabinet. Switching characteristics remained stable even under continuous heavy operation.

  • Nikh***ech
    Aug 13, 2026

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

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
VI-2NK-CV-F4 Image

VI-2NK-CV-F4

Vicor Corporation
98D-VI-2NK-CV-F4

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