Circular Connectors

Image Part Number Description / PDF Quantity Rfq
600004109

600004109

Lumberg Automation

RSHL 8/S 5,5

0

933100100

933100100

Lumberg Automation

N11R BM FA F

0

932256112

932256112

Lumberg Automation

ELST 412 LED AU

0

600004749

600004749

Lumberg Automation

RKC/LED 4/7 SINGLE PK OF 1

0

933382100

933382100

Lumberg Automation

ELKE 4408 V FM8 05

0

831411001

831411001

Lumberg Automation

N 6 R 3 LED 24

0

500002960

500002960

Lumberg Automation

RSC 190/13,5 SINGLE PK OF 1

0

500000514

500000514

Lumberg Automation

RSC 50/13,5 SINGLE PACK OF 1

0

930356500

930356500

Lumberg Automation

MAS 70 S BLACK

0

10987

10987

Lumberg Automation

0939 CTX 302

0

934832002

934832002

Lumberg Automation

RSCQS 4D/9

0

46594

46594

Lumberg Automation

RKCN 5/9 SINGLE PACKAGE OF 1

0

500002005

500002005

Lumberg Automation

RSC 401/11 SINGLE PACKAGE OF 1

0

600001267

600001267

Lumberg Automation

RSE 4 BL -MODIFIED O-RING

0

500000531

500000531

Lumberg Automation

RKC 40/11 SINGLE PACKAGE OF 1

0

500000517

500000517

Lumberg Automation

RKC 50/11 SINGLE PACKAGE OF 1

0

934126100

934126100

Lumberg Automation

CA 6 LS

0

933173199

933173199

Lumberg Automation

ELWIKA 4012 PG 7 TRANSPARENT

0

930934500

930934500

Lumberg Automation

MASEI 5 S

0

930356517

930356517

Lumberg Automation

MAS 70 S GRAY

0

Circular Connectors

1. Overview

Circular connectors are multi-pin electrical connectors with circular contact arrangements, designed for reliable signal/power transmission in harsh environments. They feature robust mechanical structures, environmental sealing, and high mating durability. These connectors are critical in aerospace, industrial automation, and medical equipment where vibration resistance and signal integrity are paramount.

2. Main Types & Functional Classification

TypeFunctional CharacteristicsApplication Examples
MIL-DTL-38999High-density, threaded coupling, EMI shieldingAerospace systems, military vehicles
USB Type-CReversible design, 10Gbps data rate, 100W power deliverySmartphones, laptops, PDAs
BNCBayonet locking, 2GHz frequency rangeTest equipment, video systems
LVDT CircularLinear variable differential transformer integrationIndustrial sensors, robotics

3. Structure & Components

Typical construction includes: - Shell: Aluminum alloy/zinc die-cast housing with corrosion-resistant plating - Contacts: Gold-plated phosphor bronze with 0.5-2.0mm diameter - Insulation: High-temperature thermoplastic (200 C rating) - Sealing: IP67/IP68 rated elastomer gaskets - Mounting: Threaded/flange/clamp mechanisms

4. Key Technical Parameters

ParameterTypical RangeImportance
Voltage Rating50V-600VDetermines power transmission capacity
Current Rating1A-25A/contactAffects thermal performance
Contact Resistance 5m Impacts signal integrity
IP RatingIP40-IP68Defines environmental protection level
Operating Temp-65 C to +200 CMaterial stability indicator
Mating Cycles500-10,000Service life predictor

5. Application Fields

  • Aerospace: Flight control systems, satellite antennas
  • Industrial: CNC machines, automated guided vehicles
  • Medical: MRI scanners, patient monitoring systems
  • Telecom: 5G base stations, fiber optic networks
  • Consumer: VR headsets, gaming peripherals

6. Leading Manufacturers

ManufacturerKey ProductsSpecial Features
AmphenolMIL-DTL-38999 seriesComposite materials, EMI filtering
TE ConnectivityDEUTSCH D38999Thermoplastic housing, 2000V dielectric
MolexUSB Type-C 10GbpsShielded twinax design
DelphiAutomotive circular connectorsIP69K rating for EV charging
LemoPush-pull circular seriesSubminiature, 5000+ mating cycles

7. Selection Guidelines

Key considerations: 1. Environmental factors: Temperature extremes, fluid exposure 2. Electrical requirements: Signal type (analog/digital), current load 3. Mechanical constraints: Panel space, mating force limitations 4. Compliance standards: MIL-STD, ISO 6722, RoHS 5. Cost vs. longevity: High-cycle applications justify premium connectors

8. Industry Trends

Emerging developments include: - Miniaturization: 1.0mm contact pitch enabling wearable devices - High-speed transmission: 25Gbps+ differential pairs for industrial IoT - Smart connectors: Integrated sensors for condition monitoring - Material innovation: Graphene-coated contacts reducing resistance - Eco-design: Halogen-free thermoplastics meeting REACH regulations

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