Circular Connectors

Image Part Number Description / PDF Quantity Rfq
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900000210

Lumberg Automation

0976 PMC 201

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EF12M OCTOPUS

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600004107

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RSHL 5/S 5,5

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600001596

Lumberg Automation

RSCN 4/DUO SINGLE PACKAGE OF 1

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Lumberg Automation

N 11 RMB FA F

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900000229

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Lumberg Automation

0979 PTX 101

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934935001

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Lumberg Automation

RKCCS 5K/11 0,75

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Lumberg Automation

RSMEH 4

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500000516

500000516

Lumberg Automation

RKC 50/9 (SOLD AS SINGLE)

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500000187

500000187

Lumberg Automation

RKCW 120/13,5 SINGLE PK OF 1

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831618001

Lumberg Automation

N 6 R 3 LED 24 DB

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600004010

600004010

Lumberg Automation

RKCS 5/9 SINGLE PACKAGE OF 1

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500000229

500000229

Lumberg Automation

RSC 401/9 SINGLE PACKAGE OF 1

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934125100

934125100

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CA 3 LD

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500000186

500000186

Lumberg Automation

RKCW 190/13,5 SINGLE PK OF 1

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600005201

600005201

Lumberg Automation

RSCW 4/7 PACKAGE OF 5

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600005184

600005184

Lumberg Automation

RKCW 4/9 PACKAGE OF 5

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932631106

932631106

Lumberg Automation

N 11 R EM GRAY

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69225

Lumberg Automation

RSCQ 4/9 SINGLE PACKAGE OF 1

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932627106

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Lumberg Automation

N 11 R AM 5

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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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