Circular Connectors

Image Part Number Description / PDF Quantity Rfq
1200845192

1200845192

Woodhead - Molex

REC U12 12P AC FE M16 BM WIR SHD

0

0848569108

0848569108

Woodhead - Molex

NMEA MINI, MALE TERMINATOR

0

1200845185

1200845185

Woodhead - Molex

REC U12 5P AC MA M16 BM WIR SHD

0

1200700225

1200700225

Woodhead - Molex

MIC 5P MR 12IN. 22/1 PVC SS

0

1200845181

1200845181

Woodhead - Molex

REC U12 5P AC MA M16 BM SOL SHD

0

1300370008

1300370008

Woodhead - Molex

TOP MOUNT 8 OUTLET CON.DVC/NET

0

1200704010

1200704010

Woodhead - Molex

MIC 4P MR 12M 22/1 PVC

0

1200700262

1200700262

Woodhead - Molex

MIC 8P FR 30CM SS SHELL

0

1202330017

1202330017

Woodhead - Molex

M23-PWR-MM-6P-CRIMP-Z-7-12

0

1302030245

1302030245

Woodhead - Molex

MC 10P MA INSERT PVC C SIZE

0

1202300153

1202300153

Woodhead - Molex

M23-SIG-MM-17P-SOLDER-Z-11-17

0

1300390374

1300390374

Woodhead - Molex

MC 5P M/MP TERMINATOR

0

1300210008

1300210008

Woodhead - Molex

MALE HI VOLT PORT CONN

0

1200710048

1200710048

Woodhead - Molex

MIC 5P M/M-ATTACH STR PG9 SS

0

1302030115

1302030115

Woodhead - Molex

QC 4P MALE INSERT YELLOW

0

1300390359

1300390359

Woodhead - Molex

MC 6P MSPG 5-6 JPD BLK TERMIN

0

1200700370

1200700370

Woodhead - Molex

MIC 4P F/FR 0.5M 22/1

0

0848649006

0848649006

Woodhead - Molex

CONN RCPT FMALE 5POS GOLD SOLDER

0

1201095015

1201095015

Woodhead - Molex

RCPT U12 4P M16 SHLD BRA AU

0

1202330022

1202330022

Woodhead - Molex

M23-PWR-MM-8P-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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