Circular Connectors

Image Part Number Description / PDF Quantity Rfq
930131500

930131500

Lumberg Automation

MAS 50 S BLACK

0

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Lumberg Automation

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500000211

Lumberg Automation

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10986

10986

Lumberg Automation

0939 CTX 301

0

931002117

931002117

Lumberg Automation

MAS 30 UM GRAY

0

932916106

932916106

Lumberg Automation

ELST 412 PG9 AU

90

931876117

931876117

Lumberg Automation

MAS 5100 W UM GRAY

0

600000541

600000541

Lumberg Automation

RSE 5B

0

600005197

600005197

Lumberg Automation

RSCW 3U/7 PACKAGE OF 5

0

933174100

933174100

Lumberg Automation

ELWIKA 4012 PG 9 BLACK

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900000015

900000015

Lumberg Automation

0936 DFC 303

0

933040100

933040100

Lumberg Automation

ELKE 512 PG 9

0

930960517

930960517

Lumberg Automation

MAK 5100 GRAY

0

500000230

500000230

Lumberg Automation

RSC 401/16 SINGLE PACK OF 1

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600003707

600003707

Lumberg Automation

PRSFM 5

0

933168100

933168100

Lumberg Automation

ELWIST 5012 PG 9 BLACK

0

931776001

931776001

Lumberg Automation

N 6 R EM

0

600004751

600004751

Lumberg Automation

RKCW/LED 4/7 SINGLE PK OF 1

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600005207

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Lumberg Automation

RKC 8/9 PACKAGE OF 5

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930689117

930689117

Lumberg Automation

MAS 7100 S UM 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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