Circular Connectors

Image Part Number Description / PDF Quantity Rfq
1200700205

1200700205

Woodhead - Molex

MIC 5P F/FR 0.5M 22/1 PVC

0

1202340007

1202340007

Woodhead - Molex

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

0

1300170019

1300170019

Woodhead - Molex

MC 4P M/ATTCH STR PG13.5

0

1200770079

1200770079

Woodhead - Molex

COIL-CORD 1.5-4.5' #22-4 DC

0

1202330002

1202330002

Woodhead - Molex

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

0

1202310041

1202310041

Woodhead - Molex

M23-SIG-REC-MM-19P-CRIMP-FM

0

1200845039

1200845039

Woodhead - Molex

MIC 4P U-L REC MALE BACK M16 S

0

1202300078

1202300078

Woodhead - Molex

M23-SIG-FF-9P-CRIMP-90-7-12

0

1202310038

1202310038

Woodhead - Molex

M23-SIG-REC-MM-17P-CRIMP-FM

0

1300170027

1300170027

Woodhead - Molex

MC 5P M-ATTCH STR PG13.5

0

1200905001

1200905001

Woodhead - Molex

NC-3P-FE/FE REC-PG7-PCB MOUNT

0

1300170030

1300170030

Woodhead - Molex

MC 5P M/M-ATTACH STR PG13.5

0

1202300022

1202300022

Woodhead - Molex

M23-SIG-FF-9P-CRIMP-Z-3-7

0

1200840048

1200840048

Woodhead - Molex

REC M12 8P AC FE M16 BM SOL SHLD

0

1300600015

1300600015

Woodhead - Molex

MC MPIS 6/3P FR 20' 16/8 STO

0

1200700160

1200700160

Woodhead - Molex

MIC 4P FR 90D PCB MOUNT

0

1301210063

1301210063

Woodhead - Molex

CONN RD CBL TO FLAT, NEMA L6-20

0

1200700158

1200700158

Woodhead - Molex

MIC 4P FR STR PCB MOUNT

0

1200700359

1200700359

Woodhead - Molex

MIC 4P MR 0.5M M14X1 #22 PVC

0

1210370046

1210370046

Woodhead - Molex

MOLEX DIN ADAPTER

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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