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HomeProductsPower Supplies - (Board Mount)DC DC ConvertersV300B48T250BS
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V300B48T250BS - Vicor Corporation

Manufacturer Part Number
V300B48T250BS
Manufacturer
Vicor
Allelco Part Number
98D-V300B48T250BS
Warranty
1 Year Allelco Warranty - Find out more
Stock Status:
39,267 pcs available, New & Original
Parts Description
DC DC CONVERTER 48V 250W
Package
9-DIP Module
Data sheet
V300B48T250BS.pdf

Environmental Information

Vicor REACH.pdf Vicor RoHS Cert.pdf
RoHs Status
 
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In stock: 39267

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Specifications

V300B48T250BS Tech Specifications
Vicor Corporation - V300B48T250BS technical specifications, attributes, parameters and parts with similar specifications to Vicor Corporation - V300B48T250BS

Product Attribute Attribute Value
Manufacturer Vicor
Voltage - Output 3 -
Voltage - Output 2 -
Voltage - Output 1 48V
Voltage - Isolation 3 kV
Voltage - Input (Min) 180V
Voltage - Input (Max) 375V
Type Isolated Module
Size / Dimension 2.28" L x 2.20" W x 0.50" H (57.9mm x 55.9mm x 12.7mm)
Series MINI (250W)
Power (Watts) 250 W
Product Attribute Attribute Value
Package / Case 9-DIP Module
Package Bulk
Operating Temperature -40°C ~ 100°C
Number of Outputs 1
Mounting Type Through Hole
Features OVP, UVLO
Efficiency 89%
Current - Output (Max) 5.21A
Base Product Number V300B
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 V300B48T250BS compare to other 250W isolated DC-DC converters in terms of input voltage range and efficiency under full load?
The V300B48T250BS supports an input voltage range of 180V to 375V, which is suitable for high-voltage industrial and telecom applications where stable conversion from bus voltages above 200V is required. With a maximum output of 250W at 48V and 5.21A, it achieves 89% efficiency at full load, placing it among the more efficient 250W isolated modules. When compared to similar Vicor MINI-series models like the V300B12T250BS (12V output), the V300B48T250BS maintains comparable efficiency while delivering a higher output voltage, making it preferable when 48V rail requirements exist without needing multiple converters.
What are the thermal and mounting considerations when integrating the V300B48T250BS into a PCB design operating at elevated ambient temperatures?
The V300B48T250BS operates over -40°C to +100°C, but peak power dissipation occurs under full load. At 250W output and 89% efficiency, approximately 31.6W is dissipated as heat. Given its through-hole mounting in a 9-DIP module measuring 57.9mm x 55.9mm x 12.7mm, thermal vias or a heatsink may be necessary in compact systems to maintain junction temperature within safe limits. Its large footprint allows for adequate airflow, but designers must ensure that adjacent components do not restrict convective cooling, particularly in sealed enclosures.
Can the V300B48T250BS be used in redundant power architectures, and what isolation features support fault tolerance?
While the V300B48T250BS is a single-output isolated module, its 3 kV electrical isolation between input and output provides critical safety and noise suppression in systems requiring galvanic separation. This feature supports use in distributed architectures where multiple converters feed separate loads, reducing ground loop risks. However, true redundancy would require additional circuitry or parallel operation with OR-ing diodes or active controllers, as this model does not inherently support N+1 configuration.
Is the V300B48T250BS compliant with modern environmental regulations, and what are the implications for global deployment?
The V300B48T250BS is RoHS non-compliant, which restricts its use in certain markets such as the European Union where RoHS mandates strict limits on hazardous substances. Although it is REACH unaffected and ECCN EAR99, indicating no export control concerns, the lack of RoHS compliance may require exemption documentation or alternative sourcing for EU-based designs. This limitation makes it less suitable for new consumer or commercial ITE products targeting regulated regions without significant redesign or approval processes.
How does the voltage regulation and transient response of the V300B48T250BS perform under rapid load changes typical in communication equipment?
The V300B48T250BS maintains tight regulation across its full operating range due to internal feedback and compensation networks optimized for industrial environments. While exact transient response data is proprietary, Vicor’s MINI series is designed for low output impedance and fast response to step loads up to full current (5.21A). In communication systems with pulsed loads, the combination of 3 kV isolation and robust EMI performance helps maintain stable 48V rails, though external bulk capacitance may still be recommended to dampen voltage dips during sudden transitions.
What protection mechanisms are integrated into the V300B48T250BS, and how do OVP and UVLO functions influence system reliability?
The V300B48T250BS includes Overvoltage Protection (OVP) and Undervoltage Lockout (UVLO) as standard features. UVLO ensures the converter only operates when input voltage exceeds 180V, preventing operation in marginal conditions that could lead to unstable output. OVP protects downstream circuits by shutting down or clamping output if internal faults cause excessive voltage spikes. These protections enhance reliability in harsh environments but may require coordination with upstream power management to avoid nuisance shutdowns during legitimate line transients.
What are the key differences between the V300B48T250BS and surface-mount alternatives in terms of mechanical durability and repairability?
Unlike surface-mount DC-DC converters, the V300B48T250BS uses through-hole mounting, providing superior mechanical strength and resistance to vibration—critical in industrial and telecom equipment. This also simplifies rework and field replacement compared to SMD parts, which are harder to desolder and reflow manually. However, through-hole design consumes more board space, which may limit integration in compact form factors. For high-reliability systems where serviceability matters, this trade-off often favors the V300B48T250BS despite its larger footprint.
Can the V300B48T250BS operate continuously at full power without derating, and what are the long-term implications for component lifespan?
Yes, the V300B48T250BS can deliver 250W continuously within its specified temperature range of -40°C to 100°C. However, operating near 100°C ambient increases internal junction temperatures significantly due to 31.6W of losses. Prolonged exposure to high temperatures accelerates aging of internal components, potentially reducing MTBF. Designers should monitor case temperature and consider thermal derating curves from Vicor to estimate lifetime; conservative thermal management improves long-term reliability, especially in mission-critical applications.
How does the efficiency curve of the V300B48T250BS vary across input voltage levels, and what impact does this have on total system energy consumption?
While peak efficiency is rated at 89% under nominal conditions, efficiency typically decreases slightly at lower input voltages (e.g., 180V) due to increased conduction losses. However, the wide input range ensures consistent performance across common bus rails. Over time, the higher efficiency reduces total power draw from the source, lowering operational costs in continuous-use environments like data centers or telecom hubs. For designs where input varies widely, simulating efficiency across the full range helps optimize overall system energy budget.
What are the recommended layout practices when placing the V300B48T250BS to minimize EMI and ensure proper thermal performance?
Due to its high isolation voltage and switching nature, the V300B48T250BS requires careful PCB layout. Input and output traces should be kept short and separated to reduce coupling. A solid ground plane beneath the module aids heat dissipation and minimizes loop inductance. High-current paths should be wide enough to handle 5.21A without excessive heating. Shielding or grounding the DIP module’s metal case may be needed in sensitive analog sections. Vicor typically recommends following their application notes for thermal vias and creepage distances given the 3 kV isolation requirement.
Is the V300B48T250BS suitable for use in automotive applications, and what limitations apply?
No, the V300B48T250BS is not designed for automotive use. It lacks AEC-Q100 qualification and is intended for ITE (Information Technology Equipment) applications with operating temperatures up to 100°C. Automotive environments demand stricter thermal cycling, shock, and humidity testing beyond what this module guarantees. Additionally, RoHS non-compliance further disqualifies it from most automotive supply chains, where regulatory compliance is mandatory regardless of performance.
How does the V300B48T250BS compare to switch-mode power supplies with similar power ratings in terms of size and weight for space-constrained designs?
With dimensions of 2.28" x 2.20" x 0.50", the V300B48T250BS occupies more board area than many modern planar or PCB-mount converters, but its integrated magnetics and high-density design achieve competitive volume-to-power ratios. Weighing approximately 100–120 grams, it is heavier than some ceramic-packaged alternatives but lighter than older brick-style converters. For systems where mechanical robustness and serviceability outweigh miniaturization needs, this module offers better durability at the cost of footprint efficiency.
What are the pinout considerations and compatibility issues when substituting the V300B48T250BS with another Vicor MINI-series converter?
All Vicor MINI-series converters share a compatible pinout and mechanical envelope, allowing interchangeability in many cases. However, the V300B48T250BS delivers 48V at 5.21A, so substituting with a lower-voltage variant like V300B12T250BS would require load redesign. Output current capacity is consistent across the series, so no overcurrent risk arises from swapping, but voltage matching is essential. Always verify input range, efficiency, and thermal profiles before substitution to avoid performance degradation.
Does the V300B48T250BS include remote sensing capabilities, and how can voltage accuracy be maintained over long cables?
Remote sensing is not explicitly listed as a feature for the V300B48T250BS. Therefore, voltage regulation assumes local feedback at the module output. For loads located far from the converter, voltage drop due to cable resistance can cause regulation errors. To compensate, designers may need to add external sensing lines or reduce load current, though this increases complexity. Alternatively, selecting a model with remote sense pins or adding post-regulation stages can improve accuracy in distributed systems.
What is the expected MTBF of the V300B48T250BS under typical operating conditions, and how reliable is it for mission-critical infrastructure?
While exact MTBF figures are not published publicly, Vicor estimates high reliability for their MINI series based on accelerated life testing. Operating the V300B48T250BS within specified parameters—especially maintaining case temperature below 85°C—significantly extends lifespan. Given its industrial-grade construction and lack of electrolytic capacitors, it is suitable for base stations, routers, and other telecom infrastructure where long service intervals are desired. Conservative thermal design enhances real-world reliability.
How does the input current ripple and output noise profile of the V300B48T250BS affect sensitive analog circuitry connected to the 48V rail?
The V300B48T250BS exhibits moderate input and output ripple typical of isolated converters in this class. Without specific spectral data, output noise is generally within acceptable limits for digital logic but may require filtering when feeding precision analog subsystems. Decoupling capacitors near the load and proper grounding help suppress conducted emissions. If the 48V rail powers sensors or amplifiers, additional LC filtering or LDO regulators may be needed to meet noise budgets.
Can the V300B48T250BS be paralleled to increase output current, and what synchronization challenges arise?
Parallel operation is not supported natively due to lack of droop control or master-slave timing. Attempting to parallel two V300B48T250BS units without external control can lead to current imbalance, reduced efficiency, and potential thermal runaway. For higher current demands, a single unit delivering 5.21A is typically sufficient; otherwise, a higher-rated converter or post-regulator solution should be considered. Vicor recommends using dedicated parallel kits for scalable power delivery.

Parts with Similar Specifications

The three parts on the right have similar specifications to Vicor Corporation V300B48T250BS

Product Attribute V300B48T250BS2 V300B48T250BS3 V300B48T250BL2 V300B48T250BL
Part Number V300B48T250BS2 V300B48T250BS3 V300B48T250BL2 V300B48T250BL
Manufacturer Vicor Corporation Vicor Corporation Vicor Corporation Vicor Corporation
Series - - - -
Voltage - Input (Max) - - - -
Efficiency - - - -
Features - - - Simultaneous Sampling
Package / Case - 196-LFBGA 16-DIP (0.300', 7.62mm) 64-VFQFN Exposed Pad
Base Product Number - DAC34H84 MAX500 ADS62P42
Power (Watts) - - - -
Applications - - - -
Voltage - Isolation - - - -
Voltage - Input (Min) - - - -
Current - Output (Max) - - - -
Mounting Type - Surface Mount Through Hole Surface Mount
Voltage - Output 1 - - - -
Voltage - Output 3 - - - -
Package - Tape & Reel (TR) Tube Tape & Reel (TR)
Size / Dimension - - - -
Operating Temperature - -40°C ~ 85°C 0°C ~ 70°C -40°C ~ 85°C
Type - - - -
Voltage - Output 2 - - - -
Number of Outputs - - - -

V300B48T250BS Datasheet PDF

Download V300B48T250BS pdf datasheets and Vicor Corporation documentation for V300B48T250BS - Vicor Corporation.

Datasheets
V300 Input Mini Family.pdf
Environmental Information
Vicor REACH.pdf Vicor RoHS Cert.pdf

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Customer Reviews

Evaluation: 10 Articles

  • Jess***Jones
    Apr 17, 2026

    It offers good value for the price, and the specifications match the description. I’ve been using it for two days with no issues, and I’ll definitely buy it again if I need it in the future.

  • Mich***Smith
    Apr 17, 2026

    Shipping was on time, the component pins are neatly aligned, and I tested 10 of them with a multimeter—all readings were within the specified range. Highly recommended.

  • Aman***arris
    Apr 3, 2026

    It was great—the entire process, from placing the order to receiving the package, went very smoothly. The components were consistent, the price was fair, and I had a very pleasant shopping experience.

  • Mike***nch
    Apr 3, 2026

    Better than expected! The resistance and capacitance readings were spot-on, and it passed the test on the first try. The service was reliable, and the packaging was thoughtful—I highly recommend it.

  • Daic***K.
    Mar 23, 2026

    Very good. No issue after long time testing.

  • Kevi***.
    Mar 17, 2026

    Fast switching and stable output. Very satisfied with this IC

  • Daou***hekebkeb
    Jun 16, 2024

    I had a great experience purchasing items from Allelcoelec, I recommend

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    Jun 19, 2024

    Morrey was very helpful and right on top of things!
    He replied quickly to my RFQ. He was very courteous and professional.

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Vicor Corporation

V300B48T250BS

Vicor Corporation
98D-V300B48T250BS

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