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HomeProductsPower Supplies - (Board Mount)DC DC ConvertersVI-264-IV
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VI-264-IV - Vicor Corporation

Manufacturer Part Number
VI-264-IV
Manufacturer
Vicor
Allelco Part Number
32D-VI-264-IV
Warranty
1 Year Allelco Warranty - Find out more
Stock Status:
37,472 pcs available, New & Original
Parts Description
DC DC CONVERTER 48V 150W
Package
Full Brick
Data sheet
VI-264-IV.pdf

Environmental Information

Vicor REACH.pdf
RoHs Status
 
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In stock: 37472

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Specifications

VI-264-IV Tech Specifications
Vicor Corporation - VI-264-IV technical specifications, attributes, parameters and parts with similar specifications to Vicor Corporation - VI-264-IV

Product Attribute Attribute Value
Manufacturer Vicor
Voltage - Output 3 -
Voltage - Output 2 -
Voltage - Output 1 48V
Voltage - Isolation 3 kV
Voltage - Input (Min) 200V
Voltage - Input (Max) 400V
Type Isolated Module
Size / Dimension 4.60' L x 2.40' W x 0.50' H (116.8mm x 61.0mm x 12.7mm)
Series VI-200™ (150W)
Power (Watts) 150 W
Product Attribute Attribute Value
Package / Case Full Brick
Package Bulk
Operating Temperature -40°C ~ 85°C
Number of Outputs 1
Mounting Type Through Hole
Features OCP, OTP, OVP, SCP
Efficiency 90%
Current - Output (Max) 3.13A
Base Product Number VI-264
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)

What are the key thermal and electrical performance characteristics of the VI-264-IV isolated DC-DC converter when operating at full load in a 400V input environment?
At full power output of 150W with an input voltage of 400V, the VI-264-IV maintains an efficiency of approximately 90%, resulting in about 15W of power dissipation. Given its full brick construction and through-hole mounting on a standard PCB, designers must ensure adequate airflow or conduction cooling across the 116.8mm × 61.0mm footprint to keep junction temperatures within the -40°C to +85°C operating range. The thermal resistance from case to ambient is not explicitly stated but can be inferred as moderate due to the package size; thus, derating above 70°C ambient may be necessary for long-term reliability.
How does the VI-264-IV compare to other modules in the VI-200 series regarding input voltage tolerance and isolation requirements?
While sharing the same mechanical form factor and power class as other members of the VI-200™ series, the VI-264-IV uniquely supports a 200–400V input range, making it suitable for high-voltage industrial or telecom backplane applications. Unlike lower-voltage variants that may accept inputs down to 36V or 75V, this unit lacks low-end voltage support, reflecting its focus on stable operation in systems where line transients or brownouts are rare. Its 3 kV isolation rating aligns with typical ITE safety standards, matching most series members, but its absence of RoHS compliance limits use in certain regulated environments where lead-free assembly is required.
Can the VI-264-IV safely operate with input voltages below 200V without damage or significant degradation in regulation?
No, the VI-264-IV is specified for operation only within a 200V to 400V input range. Operating below 200V violates the manufacturer's guaranteed performance envelope and risks unstable output regulation, increased dropout losses, and potential overheating due to reduced efficiency. Although internal protection circuits like OVP may trigger near the lower limit, sustained operation outside the datasheet range is not recommended and voids warranty conditions. For systems requiring lower input voltages, a different model such as the VI-J40 with 100–160V input capability would be more appropriate.
What design considerations apply when integrating the VI-264-IV into a system requiring compliance with international safety certifications?
The VI-264-IV carries a 3 kV galvanic isolation, which satisfies common creepage and clearance requirements for reinforced insulation in SELV (Safety Extra-Low Voltage) circuits under standards like IEC 60950-1 or IEC 62368-1. However, its non-RoHS status means it cannot be used in products targeting the European market unless exempted under legacy provisions. Designers must also account for the module’s full-brick footprint—occupying significant board real estate—and ensure sufficient spacing around adjacent components to meet pollution degree and altitude derating guidelines during certification testing.
How does the current output capability of the VI-264-IV scale relative to input voltage variations within its specified range?
Within the 200–400V input window, the VI-264-IV maintains a relatively constant 3.13A maximum output current, assuming no thermal derating. As input voltage increases, the duty cycle decreases slightly, improving efficiency marginally but not altering current delivery significantly. This behavior enables consistent power delivery across varying line conditions, which is advantageous in distributed power architectures where multiple converters share a common bus. Nevertheless, total output power remains capped at 150W, so exceeding 48V × 3.13A = 150W will trigger current limiting regardless of input level.
In what scenarios would the VI-264-IV be preferred over a non-isolated buck regulator for stepping down from 400V to 48V?
The VI-264-IV is ideal when electrical isolation between primary and secondary circuits is mandated by safety standards or required to suppress ground loops and EMI noise in sensitive measurement or control systems. Unlike non-isolated solutions that share a common reference, the VI-264-IV provides galvanic separation via its transformer-based topology, enhancing fault tolerance and protecting downstream loads from high-voltage transients. Additionally, its high-efficiency design minimizes heat generation compared to linear regulators, making it more practical than inefficient pass elements in high-power-density designs.
What are the implications of the VI-264-IV’s bulk packaging format for procurement and inventory management in production environments?
Bulk packaging reduces per-unit cost but requires careful handling to avoid ESD damage and moisture exposure before soldering. Since the MSL rating is listed as Not Applicable, the component is likely insensitive to humidity-induced delamination, but best practices still recommend dry storage in sealed bags until use. For high-volume manufacturing, bulk supply may simplify logistics but demands robust warehouse controls to prevent shelf-life issues. Suppliers typically offer minimum order quantities (MOQs), so engineers should verify availability against forecasted demand cycles to avoid stockouts.
How does the efficiency curve of the VI-264-IV behave at partial loads, and what impact does this have on system-level thermal budgeting?
While peak efficiency is quoted at 90% under full-load conditions, typical VI-200 series modules exhibit flat efficiency curves across mid-to-high load ranges, often maintaining >85% efficiency even at 50% load. This characteristic reduces dynamic power losses in variable-load applications and simplifies thermal planning, as peak heat dissipation occurs predictably near maximum output. However, at very light loads, switching losses dominate, potentially dropping efficiency to 70–75%. Designers should simulate worst-case steady-state profiles to estimate average power loss and select heatsinks accordingly, especially if the converter spends extended periods near idle conditions.
Can multiple VI-264-IV units be paralleled to increase total output current while maintaining balance?
Paralleling the VI-264-IV is generally not recommended without external current-sharing circuitry, as internal feedback mechanisms are designed for standalone operation. Without active load balancing, one module may carry disproportionate current due to slight mismatches in V-I characteristics, leading to uneven aging or premature failure. Vicor offers proprietary solutions like the Factor System for modular power stacks, but direct parallel connection of discrete VI-264-IV units introduces risk. If higher current is needed, a single unit already delivers the maximum rated 3.13A at 48V, so redesigning the output stage may be preferable.
What environmental and regulatory constraints limit the global deployment of the VI-264-IV despite its robust technical specifications?
The primary constraint is its RoHS non-compliance, which restricts use in regions enforcing strict hazardous substance regulations, including most of the EU and California. Although exempt under certain legacy clauses, OEMs seeking CE marking or California Proposition 65 compliance must either substitute with a compliant variant or obtain formal exemption documentation. Additionally, REACH status indicates no SVHC concerns, and ECCN/EAR99 classification simplifies export controls, but RoHS remains a critical barrier for consumer-facing or globally distributed ITE equipment.
How does the VI-264-IV’s physical dimensions affect PCB layout density and compatibility with industry-standard backplanes?
With dimensions of 116.8mm × 61.0mm × 12.7mm, the VI-264-IV occupies a full-brick profile compatible with DIN rail or chassis-mounted backplane systems common in telecom racks and industrial controllers. Its through-hole pins allow secure mechanical attachment, reducing vibration-induced fatigue in harsh environments. However, the large footprint consumes significant board area—roughly equivalent to two standard SOIC packages end-to-end—which may challenge space-constrained designs. Careful placement away from heat-sensitive components and adherence to minimum clearance distances per isolation voltage are essential during layout review.
Are there any hidden costs or lifecycle risks associated with selecting the VI-264-IV beyond its upfront price and performance metrics?
Yes. Due to its RoHS exclusion, long-term sourcing could become problematic as manufacturers phase out non-compliant parts. End-of-life notices may arrive abruptly, disrupting supply chains. Furthermore, while the module itself is rugged, integration complexity increases: designers must implement proper snubbing networks for high-voltage transients, manage input capacitance carefully to avoid inrush surges, and validate EMI performance early in development. These factors add validation time and potential rework costs, offsetting initial savings from choosing a high-performance off-the-shelf module.

Parts with Similar Specifications

The three parts on the right have similar specifications to Vicor Corporation VI-264-IV

Product Attribute VI-264-IV-F1 VI-264-IV-B1 VI-264-IV-F2 VI-264-IV-F4
Part Number VI-264-IV-F1 VI-264-IV-B1 VI-264-IV-F2 VI-264-IV-F4
Manufacturer Vicor Corporation Vicor Corporation Vicor Corporation Vicor Corporation
Voltage - Input (Min) - - - -
Size / Dimension - - - -
Applications - - - -
Voltage - Output 1 - - - -
Package - Tape & Reel (TR) Tube Tape & Reel (TR)
Voltage - Output 2 - - - -
Features - - - Simultaneous Sampling
Current - Output (Max) - - - -
Base Product Number - DAC34H84 MAX500 ADS62P42
Efficiency - - - -
Voltage - Output 3 - - - -
Package / Case - 196-LFBGA 16-DIP (0.300', 7.62mm) 64-VFQFN Exposed Pad
Series - - - -
Power (Watts) - - - -
Operating Temperature - -40°C ~ 85°C 0°C ~ 70°C -40°C ~ 85°C
Voltage - Input (Max) - - - -
Voltage - Isolation - - - -
Number of Outputs - - - -
Type - - - -
Mounting Type - Surface Mount Through Hole Surface Mount

VI-264-IV Datasheet PDF

Download VI-264-IV pdf datasheets and Vicor Corporation documentation for VI-264-IV - 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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    Sep 22, 2026

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  • Retr***UWorks
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    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
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    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
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    one of my hobbies is skydiving. and when i'm skydiving this works great.

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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.
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VI-264-IV Image

VI-264-IV

Vicor Corporation
32D-VI-264-IV

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