Circular Connectors

Image Part Number Description / PDF Quantity Rfq
1200700197

1200700197

Woodhead - Molex

MIC 5P F/FR 12IN. 1/4NPT #18 P

0

1205030004

1205030004

Woodhead - Molex

FA M12 4P SC FE STR UNSH PG11 SC

0

1200720051

1200720051

Woodhead - Molex

MIC 2P FP 6FT. 22/2 SHLD

0

1200910008

1200910008

Woodhead - Molex

NC 4P IDC F-ATTACH STRAIGHT

0

1200700212

1200700212

Woodhead - Molex

MIC 5P F/FR 4M 22/1 PVC

0

1200720044

1200720044

Woodhead - Molex

MIC 2P FP 3' 18/2PVC

0

1200710082

1200710082

Woodhead - Molex

FA M12 8P AC MA STR SCR SHLD

0

1200700086

1200700086

Woodhead - Molex

MIC 3P MR 90D PCB MOUNT

0

1200900035

1200900035

Woodhead - Molex

NC 5P MR 90D PCB MOUNT

0

1300370014

1300370014

Woodhead - Molex

TOP MOUNT 8 OUTLET .5M DEV-NET

0

1728700710

1728700710

Woodhead - Molex

CONN PLUG MALE 7P GOLD SLDR CUP

0

1200700172

1200700172

Woodhead - Molex

MIC 4P F/FR 6M 1/2NPT #18 PVC

0

1200910011

1200910011

Woodhead - Molex

NC 4P IDC M-ATTACH STRAIGHT

0

1200850020

1200850020

Woodhead - Molex

FA U12 4P AC MA STR PG9 BK V4A

0

1200845187

1200845187

Woodhead - Molex

REC U12 8P AC MA M16 BM WIR SHD

0

1202300024

1202300024

Woodhead - Molex

M23-SIG-FF-9P-CRIMP-Z-11-17

0

1202300014

1202300014

Woodhead - Molex

M23-SIG-FF-7P-CRIMP-Z-7-12

0

1200770015

1200770015

Woodhead - Molex

MIC 4P SPLT M/M F F 2 FT AC

0

1202300002

1202300002

Woodhead - Molex

CONN PLUG FMALE 6POS GOLD SOLDER

0

1202330018

1202330018

Woodhead - Molex

M23-PWR-MM-6P-CRIMP-Z-11-17

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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