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HomeProductsPower Supplies - (Board Mount)DC DC ConvertersVI-2NK-CW-F2
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VI-2NK-CW-F2 - Vicor Corporation

Manufacturer Part Number
VI-2NK-CW-F2
Manufacturer
Vicor
Allelco Part Number
98D-VI-2NK-CW-F2
Warranty
1 Year Allelco Warranty - Find out more
Stock Status:
43,673 pcs available, New & Original
Parts Description
DC DC CONVERTER 40V 100W
Package
Full Brick
Data sheet
VI-2NK-CW-F2.pdf

Environmental Information

Vicor REACH.pdf
RoHs Status
 
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In stock: 43673

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Specifications

VI-2NK-CW-F2 Tech Specifications
Vicor Corporation - VI-2NK-CW-F2 technical specifications, attributes, parameters and parts with similar specifications to Vicor Corporation - VI-2NK-CW-F2

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™ (100W)
Power (Watts) 100 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) 2.5A
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-CW-F2 compare to other 100W isolated DC-DC converters in terms of input voltage range and efficiency under full load conditions?
The VI-2NK-CW-F2 offers a relatively narrow input voltage range of 36V to 76V, which limits its applicability in systems requiring wider input tolerances. In contrast, many competitive 100W isolated modules support inputs as low as 24V or as high as 100V+. However, within this constrained input band, it achieves 90% efficiency at full 100W output—a strong figure for brick-format converters. This efficiency is critical when evaluating thermal management and power loss budgets, especially in space-constrained industrial or telecom applications where heat dissipation must be minimized.
What are the key isolation and safety features of the VI-2NK-CW-F2, and how do they impact system-level reliability in commercial ITE environments?
The VI-2NK-CW-F2 provides 3 kV of electrical isolation between input and output, meeting stringent safety requirements for information technology equipment (ITE). Combined with built-in protections such as overcurrent (OCP), overtemperature (OTP), overvoltage (OVP), and short-circuit protection (SCP), these features significantly reduce risk during fault events. In real-world deployments, this level of protection enables safe integration into non-isolated primary rails without compromising fault containment, reducing the need for additional external circuitry while maintaining compliance with UL and IEC standards in commercial settings.
Can the VI-2NK-CW-F2 operate reliably across the full -25°C to 85°C temperature range under sustained 100W output, and what derating considerations should engineers apply?
While the datasheet specifies an operating temperature range of -25°C to 85°C, continuous operation at 100W may require careful attention to ambient airflow and heatsinking due to efficiency losses (~11W at 90% efficiency). At elevated ambient temperatures near 85°C, internal component stress increases, potentially accelerating aging. Therefore, even within the stated range, long-term reliability at full power often necessitates thermal modeling and empirical validation under actual system conditions rather than relying solely on datasheet parameters.
How does the physical footprint and mounting style of the VI-2NK-CW-F2 affect board layout complexity compared to surface-mount alternatives?
The VI-2NK-CW-F2 uses a Full Brick package measuring 116.8mm x 47.2mm x 26.7mm and is through-hole mounted—a legacy form factor that simplifies mechanical attachment but consumes significant PCB real estate. Modern SMD alternatives often use smaller formats like quarter-brick or half-brick with higher power density. For designs prioritizing modularity and ease of replacement, the through-hole design can reduce assembly labor, but at the cost of increased board area and reduced flexibility in compact layouts.
Is the VI-2NK-CW-F2 suitable for use in battery-powered systems or renewable energy microinverters given its input and output characteristics?
No, the VI-2NK-CW-F2 is not ideal for battery-powered or solar microinverter applications. Its fixed 40V output and narrow 36–76V input window are incompatible with typical battery chemistries (e.g., Li-ion at 25–42V) or MPPT-derived voltages from PV panels. Instead, it targets fixed-voltage industrial or telecom backplanes where stable, regulated 40V rails are required. Engineers selecting this module must ensure their source voltage remains strictly within the specified range to avoid instability or shutdown.
What are the implications of the RoHS non-compliance status for the VI-2NK-CW-F2 in global manufacturing, particularly in the EU and China?
The VI-2NK-CW-F2’s RoHS non-compliance means it contains restricted substances such as lead or certain brominated flame retardants above regulatory thresholds. This restricts its use in new product designs destined for the European Union, Japan, South Korea, and other regions enforcing strict hazardous substance controls. Manufacturers planning mass production should verify whether existing inventory can be used before obsolescence or redesign, or consider newer RoHS-compliant variants if available.
How does the VI-2NK-CW-F2’s current output capability interact with transient response requirements in motor control or lighting applications?
With a maximum output current of 2.5A at 40V (100W), the VI-2NK-CW-F2 can sustain moderate current demands, but its transient response depends heavily on external bulk capacitance and load dynamics. In inductive loads like motors or LED drivers, sudden current steps may cause droop unless sufficient output capacitance is added. Unlike digital controllers with adaptive compensation, analog regulation in older Vicor designs like the VI-200 series may exhibit slower settling times, making it less suitable for fast-changing loads without careful stability analysis.
What design trade-offs should be considered when choosing between the VI-2NK-CW-F2 and alternative Vicor models such as the VI-2NK-CX-F2 for similar 40V output applications?
The primary difference lies in packaging and environmental ratings. The CX variant typically features conformal coating for enhanced humidity resistance, whereas the CW version lacks this feature. For dry indoor environments like server racks or office equipment, the CW suffices; however, in humid or dusty industrial settings, the CX may offer better long-term reliability. Both share identical electrical performance, so selection hinges on environmental exposure rather than core functionality.

Parts with Similar Specifications

The three parts on the right have similar specifications to Vicor Corporation VI-2NK-CW-F2

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

VI-2NK-CW-F2 Datasheet PDF

Download VI-2NK-CW-F2 pdf datasheets and Vicor Corporation documentation for VI-2NK-CW-F2 - Vicor Corporation.

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

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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.

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America United States 5
Brazil 7
Europe Germany 5
United Kingdom 4
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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.
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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.


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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

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VI-2NK-CW-F2 Image

VI-2NK-CW-F2

Vicor Corporation
98D-VI-2NK-CW-F2

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