Ruggedization - North Atlantic Industries



North Atlantic Industries (NAI) is a leader in designing advanced embedded board and system-level products for the most demanding air, land, and sea requirements, and our products are deployed in a wide range of harsh military, aerospace and industrial environments. With all design and manufacturing done in the U.S. we build rugged into our products from the ground up. Always vigilant about the security of our supply chain, we don’t subcontract offshore.

Utilizing best-in-class design, manufacturing, and test methodologies to develop products that achieve the highest levels of efficiency, power and performance that can operate effectively in harsh, rugged environments; sustain extreme temperature changes; and withstand vibration, shock, and corrosive conditions. Our design tools include thermal and structural analysis and advanced simulation software. Rugged environmental standards include MIL-STD-810 & VITA 47.

In house environmental and EMI ruggedization qualification capabilities include temperature, vibration (sine & random), shock, humidity, and conducted emissions. As required, NAI supplements these capabilities through the use of local test laboratories. Our products are ruggedized and tested to ensure they operate in harsh environments. Tests include altitude, temperature-altitude, contaminate protection, explosive atmosphere, MIL-STD-461 EMI testing, and lightning testing.

The following tables outline the general Environmental Specifications design guidelines for both board level and power products of North Atlantic Industries.

Ruggedization Parameters for our Board Level products

All of our cPCI, VME and OpenVPX boards are designed for either air or conduction cooling. All boards also incorporate appropriate stiffening to ensure performance during shock and vibration and to assure reliable operation (lower fatigue stresses) over the service life of the product.

1 / Commercial-AC (Air-Cooled) 2 / Rugged-AC (Air-Cooled) 3 / Rugged-CC (Conduction-Cooled)
   Temperature - Operating 0º C to +70º C, Ambient H -40º C to +85º C, Ambient I -40º C to +85º C, at wedgelock thermal interace
   Temperature - Storage -40º C to 85º C -55º C to 105º C -55º C to 105º C
   Humidity - Operating 0 to 95%, non-condensing 0 to 95%, non-condensing 0 to 95%, non-condensing
   Humidity - Storage 0 to 95%, non-condensing 0 to 95%, non-condensing 0 to 95%, non-condensing
   Vibration - Sine A 2 g peak, 15 Hz - 2 kHz B 6 g peak, 15 Hz - 2 kHz B 10 g peak, 15 Hz - 2 kHz C
   Vibration - Random D 0.002 g2/Hz, 15 Hz - 2kHz 0.04 g2/Hz, 15 Hz - 2 kHz 0.1 g2/Hz, 15 Hz - 2kHz E
   Shock F 20 g peak, half-sine, 11 ms 30 g peak, half-sine, 11 ms 40 g peak, half-sine, 11 ms
   Low Pressure G Up to 15,000 ft. Up to 50,000 ft. Up to 50,000 ft.

Specifications subject to change without notice.

Ruggedization Parameters for our Power Products

Our Rugged Power Supply products are designed to meet the Parameters shown below.

Parameters Level: Rugged-CC (Conduction-Cooled)
   Temperature - Operating    -40º C to 85º C at 100% load (temperature measured at card edge, conduction via card edge)
   Temperature - Storage    -55º C to +105º C (per VITA 47 CC4)
   Humidity    Humidity: 95% at 71º C per MIL-STD-810G, Method 507.5 (non-condensing)
   Vibration    Per MIL-STD-810, Method 514, Procedure 1: Per VITA 47, Class V3
   Shock    30 g's each axis per MIL-STD-810G, Method 516.6, Procedure 1; Hammer shock per MIL-STD-901; 1/2 sine wave per VITA 47 OS2
   Altitude    1,500 feet Below Sea Level to 60,000 feet Above Sea Level per VITA 47
   ESD    15 kV EN61000-4-2 per VITA 47



  1. Based on a sweep duration of ten minutes per axis, each of the three mutually perpendicular axes.

  2. Displacement limited to 0.10 D.A. from 15 to 44 Hz.

  3. Displacement limited to 0.436 D.A. from 15 to 21 Hz.

  4. 60 minutes per axis each of the three mutually perpendicular axes.

  5. Per MIL-STD-810G, Method 5.14.6 Procedure I, Fig.514.6C-6 Category 7 tailored (11.65 Grms): 15 Hz – 2 kHz; ASD (PSD) at 0.04 g2/Hz between 15 Hz - 150 Hz, increasing @ 4 dB/octave from 0.04 g2/Hz to 0.1 g2/Hz between 150 Hz – 300 Hz, 0.1 g2/Hz between 300 Hz - 1000 Hz, decreasing @ 6 dB/octave from 0.1 g2/Hz to 0.025 g2/Hz between 1000 Hz – 2000 Hz.

  6. Three hits per direction per axis (total of 18 hits).

  7. For altitudes higher than 50,000 ft. contact NAI.

  8. High temperature operation requires 350 lfm minimum air flow across cover/heatsink (module dependent).

  9. High temperature operation requires 600 lfm minimum air flow across cover/heatsink (module dependent).


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