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New Inrush Current Limiter Protects Avionics And Military Power Systems

BLACKSBURG, Va., Sept. 20, 2011 /PRNewswire/ -- VPT, Inc., a HEICO company (NYSE: HEI-A) (NYSE: HEI), announced today that it is continuing to expand its product line with a new power protection module, the DVCL Inrush Current Limiter.


The DVCL controls potentially damaging inrush current drawn by DC-DC converters, EMI filters, and discrete capacitors during startup. With a power capacity of 200W, users can protect multiple downstream DC-DC converters and other components using this single, lightweight DVCL module.

"We're continuing to expand our line of standard, off-the-shelf power building blocks for avionics and military power systems," said Michael J. Bosmann, Sr. Vice President of VPT, Inc. "This new front end module works in concert with our DC-DC power converters, EMI filters, and other components to provide engineers with a true 'one-stop-shopping' experience when building a power system. Engineers building commercial aircraft systems, military aircraft systems, or other critical reliability applications can be assured of the most rugged performance and reliability from this inrush current limiter."

About Inrush Current and the DVCL Inrush Current Limiter

Inrush current is the spike of current drawn by a power supply when it is turned on. Large inrush currents might be governed by a system level specification. High spike currents can create electromagnetic interference in adjacent circuitry, trip an upstream circuit breaker, or overwhelm the over-current protection of a solid state power controller.

The DVCL Inrush Current Limiter functions by limiting the rate of rise of its output voltage. It will also control the inrush current of discrete input capacitors.

Specific features of this new module include:
  • Smallest (1.075 in2), lightest weight (16g) hermetic inrush current limiter available
  • High 99% efficiency
  • Hermetic package ensures full performance over -55 degrees C to +125 degrees C military temperature range
  • Up to 200W output power available to power multiple downstream DC-DC converters and point of load DC-DC converters
  • Extreme reliability
  • Industry's widest input voltage range of 11 to 50V per MIL- STD-704
  • High input transient voltage – 80V for 1 second
  • Available compliant to MIL-PRF-38534, Class H
  • Defense Logistics Agency Standard Microcircuit Drawing (SMD) pending

The DVCL Inrush Current Limiter is available immediately at a price of $189.99 per unit in OEM quantities.

For a datasheet, application note, and additional product information, please visit the VPT website at

About VPT and HEICO

VPT, Inc., part of the HEICO Electronic Technologies Group, leads the industry in providing innovative DC-DC power converters, EMI filters, and custom engineering services for avionics, military, and space applications. VPT can deliver its patented power solutions in a fast timeframe, with certified quality, at a comfortable cost. Every day, organizations like NASA, Lockheed Martin, Boeing, Raytheon, the United States Air Force, and many more depend on quality solutions from VPT to power critical systems. Whether on the ground, in the air, or beyond, VPT provides the power driving critical missions today. For more information about VPT, please visit the web site at

HEICO Corporation (NYSE:HEI-A) (NYSE:HEI) is engaged primarily in certain niche segments of the aviation, defense, space and electronics industries through its Hollywood, FL-based HEICO Aerospace Holdings Corp. subsidiary and its Miami, FL-based HEICO Electronic Technologies Corp. subsidiary. HEICO's customers include a majority of the world's airlines and airmotives as well as numerous defense and space contractors and military agencies worldwide in addition to medical, telecommunication and electronic equipment manufacturers. For more information about HEICO, please visit the web site at

Contact:     Michelle Manson                  Marketing Communications Mgr.                  425.353.3010                           Twitter: VPTnews


Copyright 2011 PR Newswire. All rights reserved. This material may not be published, broadcast, rewritten or redistributed.

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