Circular Connectors

Image Part Number Description / PDF Quantity Rfq
1200700483

1200700483

Woodhead - Molex

MIC 5P F/FR 2M 18/1 PVC

0

1300180313

1300180313

Woodhead - Molex

MC 3P MI 4IN 22/1 PVC

0

1200700221

1200700221

Woodhead - Molex

MIC 5P MR 12IN 18/1 PVC

0

1202300031

1202300031

Woodhead - Molex

M23-SIG-FF-12P-CRIMP-Z-3-7

0

1200910002

1200910002

Woodhead - Molex

NC 3P IDC F-ATTACH STRAIGHT

0

1200845188

1200845188

Woodhead - Molex

REC U12 12P AC MA M16 BM WIR SHD

0

1200700219

1200700219

Woodhead - Molex

MIC 5P F/FR 3M 18/1 PVC

0

1200840030

1200840030

Woodhead - Molex

MIC 5P FR ST PCB MOUNT

0

1200720058

1200720058

Woodhead - Molex

MIC 2P FP 2' 22/2 PVC

0

1200710081

1200710081

Woodhead - Molex

FA M12 5P AC FE STR SCR SHLD

0

1300350014

1300350014

Woodhead - Molex

MC 5P M-F 90D ADAPTER SS

0

1202310028

1202310028

Woodhead - Molex

M23-SIG-REC-MM-9P-SOLDER-FM

0

1301880026

1301880026

Woodhead - Molex

MC 4P FR W/PC TAILS YEL

0

1201080001

1201080001

Woodhead - Molex

M12-AU / RJ45 8P MALE-MALE 3M SH

0

0848549102

0848549102

Woodhead - Molex

CONN RCPT FMALE 4POS SOLDER CUP

0

1200700364

1200700364

Woodhead - Molex

MIC 5P F/FR 2M 1/2NPT #18 PVC

4

1200845179

1200845179

Woodhead - Molex

REC U12 5P AC FE M16 BM SOL SHD

0

1300170064

1300170064

Woodhead - Molex

FA MC 4P 0C MA STR PG13.5 UNSH B

0

1300350013

1300350013

Woodhead - Molex

115060A 90D MALE TO FEM CONN.N

0

1301210033

1301210033

Woodhead - Molex

CONNECTOR

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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