Circular Connectors

Image Part Number Description / PDF Quantity Rfq
1200848068

1200848068

Woodhead - Molex

REC U12 12P AC FE M16 BM WIR SHD

0

1200700227

1200700227

Woodhead - Molex

MIC 5P MR 2M M14X1 #22AWG PVC

0

1200700250

1200700250

Woodhead - Molex

MIC 5P MR 2M 18/1 PVC

0

1300360015

1300360015

Woodhead - Molex

MC MPIS DND PASS-THRU 6 PORT

0

1200710065

1200710065

Woodhead - Molex

MIC 4P M-ATTCH STR

0

1200910026

1200910026

Woodhead - Molex

CONN RCPT FMALE 4POS GOLD SCREW

24

1302030233

1302030233

Woodhead - Molex

MC 6P FEM INSERT PVC B SIZE

0

1301880032

1301880032

Woodhead - Molex

MC 4P MR W/PC TAILS (YEL)

0

1200750017

1200750017

Woodhead - Molex

CONN RCPT MALE 3POS GOLD SCREW

0

1300390543

1300390543

Woodhead - Molex

MC 5P F/FP LED TERMINATOR SST

0

1200704013

1200704013

Woodhead - Molex

MIC 5P F/FR 3M 1/2NPT #18/1 PVC

4

1300710080

1300710080

Woodhead - Molex

QC 3P MALE F/A-CL 3/4

0

1302030119

1302030119

Woodhead - Molex

QC 4P FI GRAY RITEFLEX

0

1202300156

1202300156

Woodhead - Molex

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

0

1200720065

1200720065

Woodhead - Molex

MIC 2P FP 12' 22/2 SS

0

1202310098

1202310098

Woodhead - Molex

M23-SIG-REC-MM-7P-CRIMP-M25

0

1300360009

1300360009

Woodhead - Molex

MC MPIS DN PASS-THRU 6 PORT

0

1300180338

1300180338

Woodhead - Molex

MC 3P MI 4IN 22/1 SPCL

0

1300180149

1300180149

Woodhead - Molex

MC 8P MSPG W/CHAIN 1-2

0

1200720067

1200720067

Woodhead - Molex

MIC 2P FP 15' 22/2PVC

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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