Circular Connectors

Image Part Number Description / PDF Quantity Rfq
1200700174

1200700174

Woodhead - Molex

MIC 4P MR 1.5M 1/2NPT #18 SPCL

0

1200700259

1200700259

Woodhead - Molex

MIC 5P MR 2M 22/1 PVC SS

0

1300390358

1300390358

Woodhead - Molex

MC 6P MSPG 1-6 JMPD TERMINATOR

0

1300460001

1300460001

Woodhead - Molex

MIC 4P M/MP CC-LINK TERMINATOR

0

1200845205

1200845205

Woodhead - Molex

REC U12 12P AC MA M16 BM SOL BRA

0

1200700392

1200700392

Woodhead - Molex

MIC 5P F/FR 1M 18/1 PVC

0

1300600017

1300600017

Woodhead - Molex

MC MPIS 8/3P FR W/10P MR

0

1202310074

1202310074

Woodhead - Molex

M23-SIG-REC-MM-9P-CRIMP-BM

0

1200845176

1200845176

Woodhead - Molex

REC U12 12P AC FE M16 BM SOL SHD

0

1202300133

1202300133

Woodhead - Molex

M23-SIG-MM-12P-SOLDER-Z-3-7

0

1300300005

1300300005

Woodhead - Molex

MIC/NC 5P M/MFE ST/ST 0.3M NB

0

1202340019

1202340019

Woodhead - Molex

M23-PWR-REC-MM-8P-CRIMP-BM

0

1200750019

1200750019

Woodhead - Molex

MIC 3P M/M-ATTCH 90D 2KEYWAY P

0

1200720074

1200720074

Woodhead - Molex

MIC 2P FP 35' 22/2PVC

0

1200770098

1200770098

Woodhead - Molex

PIN CONT 5&6P MICGLD #22AWG

0

1200700198

1200700198

Woodhead - Molex

MIC 5P F/FR 12IN 18/1 PVC SS

0

1202320044

1202320044

Woodhead - Molex

M23-SIG-INSERT-MALE-12P-SOLDER

0

1300600002

1300600002

Woodhead - Molex

MC MPIS 4/3P FR W/3P MR SERIES

0

1200700400

1200700400

Woodhead - Molex

MIC 4P MALE INSERT W/PC TAIL C

0

1300210017

1300210017

Woodhead - Molex

FEM HV STAT 1 PILOT

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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