Used in rugged and harsh environments, rectangular connectors offer design flexibility and ease of use as their advantage over other connector shapes.

Rectangular connectors are most often used in industrial automation, robotics, machine building, transportation-rail, and power creation.

Today, we are taking a deeper dive into Radiall Modular Connectors.

Radiall Modular Connectors

Air Electro is a leading distributor for Radiall’s modular connectors.

EPX (EN4644), QM, and HDQX series are commonly used in various civil aviation applications and are the market’s go-to products because of the high density, light weight benefits, and rapid installation. QM and EPX (EN4644) connectors offer plenty of modularity and flexibility with a broad range of shell size options, contacts, plating and material types. Adding Quadrax contacts from EPX (EN4644) series, Radiall’s HDQX connector series delivers the most proven high-density rectangular connector in the industry often used for RF high-speed and Ethernet connections in aerospace.


Radiall EPX EN4644 Connectors

The Commercial and Private Jet Industries Leading EN4644 Rectangular Modular Connectors

As their name suggests, EPX—EN 4644 are recognized by the European standard and often used in commercial and business jet applications. EPX connectors are the industry-leading rectangular modular connectors. EPX connectors can solve disconnect panel issues and are applicable in Line Replaceable Module (LRM) and galleys to meet all the IEM requirements.

Features:

Mechanical Performance:
  • Mating/Unmating:
    • EPX™ Disconnect: 100 cycles
    • EPX™ Rack and Panel: 500 cycles
  • Random Vibration:
    • EPX™ Disconnect: up to 27.8g
    • EPX™ Rack and Panel: up to 16.9g
  • Shocks:
    • EPX™ Disconnect and Rack and Panel: 50g – 3 shocks on each axis
    • Exception: EPXB2 Disconnect: 300g – 3 shocks on each axis
  • Insert retention in shell: 400N (90 lbs)
Electrical Performance:
  • Shell to shell conductivity: < 2.5mΩ
  • Dielectric Withstanding Voltage:
    • 1,500 Vrms at sea level
    • 800 Vrms at 50,000 feet
  • Insulation resistance: > 5,000 MΩ at ambient temperature
  • Lightning strike:
    • EPX™ composite shells: 3kA – 1,600V
    • EPX™ aluminum shells: 5kA – 1,600V
  • EMI shield effectiveness: EN2591-213
    • Frequency 100 MHz: attenuation 65 dB
    • Frequency 200 & 300 MHz: attenuation 63 dB
    • Frequency400 MHz: attenuation 62 dB
    • Frequency500 & 600 MHz: attenuation 60dB
Environmental Performance:
  • Altitude immersion:
    • EPXA and EPXB inserts: 50,000 feet
    • EPXB Bulkhead inserts: 55,000 feet
  • Air leakage for EPX™ Bulkhead inserts: < 16 cm3/h per connector
Temperature range:
  • EPX™ Disconnect: -65°C/+175°C
  • EPX™ Rack and Panel and EPXB2 composite shells: -65°C/+125°C
  • Temperature life: 1,000 hours at maximum temperature
  • Salt spray: 96 hours
Materials and Finishes:
  • Shell: nickel-plated aluminum or composite
  • Inserts: Thermosetting or high-grade thermoplastic
  • Interfacial seal and grommet: Fluorosilicone elastomer
  • Insert retention clip: Beryllium copper
  • Polarization keys: high-grade thermoplastic
  • Jackscrew/Jacknut: stainless steel
  • Contacts: gold plating over copper alloy

Radiall QM Series Connectors

QM – Quick Mount – Connectors are Commonly Used in Commercial and Private Jets

QM series has a compact design, high performance and quick installation attributes. Generally used in civil aviation and business jets applications. QM connectors series comes in various shell options: QM size A and size B in order to improve density and weight requirements in the wiring processes. QM shells offer broad spectrum of mounting devices. QM series is a budget-friendly option since it uses EPX contacts a variety of modular inserts.

Features:

Mechanical performance:
  • Mating/unmating: 50 cycles
  • Random vibration: Up to 13.8 Grms
  • Shock: 50g –3 shocks on each axis
  • Insert retention in shell: 400N (90 lbs)
Electrical performance:
  • Shell to shell conductivity: Typical < 2.5 mohm
  • Shell to rail conductivity: Typical < 2.5 mohm
  • Dielectric Withstanding Voltage:
    • 1,500 Vrms at sea level
    • 800 Vrms at 50,000 feet
  • Insulation resistance: > 5,000 MΩ at ambient temperature
  • Lightning strike: 3.6 kA – 1,600V
  • EMI shield effectiveness: EN2591-213
    • Frequency 100 MHz: Attenuation 65 dB
    • Frequency 200 MH: Attenuation 63 dB
    • Frequency: 300 MHz: Attenuation 61 dB
    • Frequency400 MHz: Attenuation 59 dB
    • Frequency500 & 600 MHz: Attenuation 58dB
Environmental performance:
  • Altitude immersion: 50,000 feet
  • Temperature range: -65°C / +155°C
  • Temperature life: 1,000 hours at +155°C
  • Salt spray: 96 hours
Materials and finishes:
  • Shell: Nickel-plated composite
  • Inserts: Thermosetting or high-grade thermoplastic
  • Interfacial seal and grommet: Fluorosilicone elastomer
  • Insert retention clip: Beryllium copper
  • Polarization keys: High-grade thermoplastic
  • Contacts: Gold plating over copper alloy

Radiall HDQX Series Connectors

HDQX Connectors are Easily Fitted with ARINC 600 Contacts

HDQX connectors are designed specifically for high-speed communication in civil and defense applications. Often used in IFE products, data networks, and military vehicle communications, HDQX connectors come as cable—to—cable and PCB—to—cable options. These space-saving connectors provide secure connections and high electrical endurance.

The benefit to using HDQX connectors come with the ability of being easily fitted with ARINC 600 Quadrax, as well as #BMA, triaxial, and twinax contacts. HDQX connectors are ideal for high density and efficient performance in rugged aerospace and military applications.

Features:

Mechanical Performance:
  • Mating/Unmating: 100 cycles
  • Random Vibration: Up to 16.9g
  • Shocks: 50g – 3 shocks on each axis
  • Mechanical axial strength (applied to strain relief): 100N as per EN2591-420
Electrical Performance:
  • Shell to shell conductivity: < 2.5Ω
  • Contact to shell conductivity: < 10 mΩ
  • Dielectric Withstanding Voltage:
    • 1000Vrms at sea level
    • 125Vrms at 70000 feet
  • Lightning strike: 3kA – 1600V
Environmental Performance:
  • Altitude immersion 50,000 feet
  • Temperature range: -65°C / +150°C (-85°F / +302°F)
  • Temperature life: 1000 hours at 150°C (+302°F)
  • Salt spray: 96 hours
  • Magnetic permeability: 2µ

 

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