3100 Class Conduction Cooled ATRs

The 3100 Class Conduction Cooled ATRs is a portfolio of sealed, conduction cooled ATRs.  These ATRs meet ARINC 404A sizes (1/4 Short to 1 ½ Long).  These ATRs are built using a machined aerospace grade aluminium alloy that make they strong, rigid and MIL-STD-461 compliant.  These ATRs are perfect for rugged and defence applications.

The 3100 Class Conduction Cooled ATRs is a portfolio of sealed, conduction cooled ATRs.  These ATRs meet ARINC 404A sizes (1/4 Short to 1 ½ Long).  They are also fully scalable and capable of housing all eurocard board types, form factors and slot counts.  In addition to this, these ATR chassis also utilise a machined aerospace grade aluminium alloy #6061-T651 and contain aluminium internal structures.  As a result they are strong and rigid while also ensuring MIL-STD-461 compliance for EMI/EMC.

In addition to the features listed above, these ATR chassis have been designed by NIS engineers that specialise in advance thermal management.  As a result they use the most efficient cooling methods – all based on the environment and program specifications they exist in.

Furthermore, the 3100 ATR Chassis can accommodate up to an 18-slot cPCI, VME or VPX backplane. There are also fully compliant with IEEE 1101.2 and the the internal subrack is fully machined and ready to accept various types of wedgelocks for 3U or 6U convection-cooled plug-in boards on 0.8”, 0.85” or 1.0” pitch.

Please note that power supply options include fixed or plug in style power supplies with outputs up to 2kW. Alternatively, input power options include single or three phase VAC inputs including 100-264 VAC @ 47-63 Hz; 115 VAC @ 400 Hz; and nominal VDC inputs from 12VDC up to 270VDC. Custom power systems are also available.

Finally, I/O connector options include D38999 Series-III, MIL-STD-26482 and other circular types commonly found in military electronic systems. For moderate to large unit volume, NIS will design an I/O printed circuit board to reduce cabling complexity and direct labor costs.

Key Features of the 3100 Class Conduction Cooled ATRs

  • Removable and customisable front I/O panels
  • Extensive use of captive hardware
  • Cleanable air filters on all air intakes (where applicable)
  • Louvered air intake and exhaust (where applicable)
  • Hard mount, cold plate, ARINC shock tray and custom mounting

 For more information about this product please contact us.


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Standard Models:

Model NumberARINC SizeData Sheet
Model 3100CustomComing Soon!
Model 3110DwarfComing Soon!
Model 3120¼ ShortComing Soon!
Model 3125¼ LongComing Soon!
Model 31303/8 ShortComing Soon!
Model 31353/8 LongComing Soon!
Model 3140½ ShortDownload
Model 3145½ LongComing Soon!
Model 3150¾ ShortComing Soon!
Model 3155¾ LongDownload
Model 31601 ShortComing Soon!
Model 31651 longComing Soon!
Model 31701 ½ ShortComing Soon!
Model 31751 ½ LongComing Soon!


  • All Eurocard backplanes supported
    • CompactPCI (cPCI)
    • VME and VME64x (ANSI/VITA 1.1-1997)
    • VXS (ANSI/VITA 41)
    • VPX (VITA 46), OpenVPX (VITA 65) and VPX REDI (VITA 48)
    • Hybrid, custom and semi-custom configurations designed and fabricated in house.
  • 3U or 6U backplane and plug in boards
  • Convection cooled plug in boards.
  • 8”, 0.85”, 1” and mixed board pitch supported
  • Custom I/O panels can be discretely wired, plug into the backplane via right angle connectors, and/or utilize semi-rigid flex circuitry to maintain a homogenous backplane and I/O board structure.

Power System:

VDC Input12V, 24V, 28V, 48V, 72V and 270V nominal input
VAC Input110VAC , 220VAC or autoranging
47-440Hz aircraft power support
3-phase power input support
CustomCustom configurations can be produced in collaboration with parent company Technology Dynamics, Inc.
EMI FilteringMIL-STD-461 compliant EMI filters produced by sister company Nova Electric are included with all ATRs. Custom and semi-custom configurations available.
Voltage HoldupMIL-STD-704 voltage hold up available as an option


Common Specifications (abbreviated):

The specifications listed are the minimum met by all ATR Chassis. Please visit individual product pages to see which models exceed these specifications.

Up to -40°C to +70°C operating
Up to -40°C to +85°C non-operating
Temperature ranges vary by application, installation environment, and if heater option is selected
HumidityMIL-STD-810F / RTCA/DO-160F
AltitudeMIL-STD-810F, up to 40,000ft (operating)
MIL-STD-810F, up to 60,000ft. (non-operating)
Bench HandlingMIL-STD-810F
Inclination0° to 30° in any axis
EMI/EMCMIL-STD-461E, fully sealed enclosure
Sand/DustMIL-STD-810F, fully sealed enclosure
RainMIL-STD-810F, fully sealed enclosure
Salt FogMIL-STD-810F, with conformal coated boards
Aircraft SpecificationsRTCA/DO-160F


  • Machined aluminium (aerospace grade 6061-T6) housing with formed sheet metal (aluminum 5032-H32) internal structures and brackets
  • Carbon fiber, composites and advanced materials optional and used as necessary
  • Dip braised (optional)
  • Chemical film per MIL-C-5541, Class 3, Gold Color (standard)
  • Customer defined MIL-Spec painting and silk screen or engraving


  • UAV
  • Fighter Jet
  • Commercial aircraft
  • Prop and Turbo prop aircraft
  • Helicopter