Circular Connectors

Image Part Number Description / PDF Quantity Rfq
1202300067

1202300067

Woodhead - Molex

M23-SIG-FF-6P-CRIMP-90-11-17

0

1200700397

1200700397

Woodhead - Molex

MIC 5P F/FR 1M 1/4NPT #22 NPB

0

1300370007

1300370007

Woodhead - Molex

TOP MOUNT 4 OUTLET 5M DEV-NET

0

1202310035

1202310035

Woodhead - Molex

M23-SIG-REC-MM-16P-CRIMP-FM

0

1202340023

1202340023

Woodhead - Molex

M23-PWR-REC-MM-8P-CRIMP-M25

0

1200700216

1200700216

Woodhead - Molex

MIC 5P MR 1M 1/4NPT 22AWG PVC

0

1200700209

1200700209

Woodhead - Molex

MIC 5P F/FR 2M 1/4NPT #22 PVC

0

0848549101

0848549101

Woodhead - Molex

CONN RCPT MALE 5P GOLD SLDR CUP

0

1200710042

1200710042

Woodhead - Molex

MIC 5P F-ATTACH STR PG7 SS

0

0849080034

0849080034

Woodhead - Molex

CONN RCPT MALE 5P GOLD WIRE LEAD

0

1200700194

1200700194

Woodhead - Molex

MIC 4P MR 3M 22/1 PVC

0

1200720071

1200720071

Woodhead - Molex

MIC 2P FP 25' 22/2

0

1200700192

1200700192

Woodhead - Molex

MIC 4P MR 2M 22/1 PVC SS

0

1300360001

1300360001

Woodhead - Molex

MC MPIS PASS-THRU 10 PORT

0

1200700249

1200700249

Woodhead - Molex

MIC 5P MR 1M 18/1 PVC 1/2 NPT

25

1302030235

1302030235

Woodhead - Molex

MC 8P FEM INSERT PVC B SIZE

0

1300170034

1300170034

Woodhead - Molex

#1A4006-34

0

1200770076

1200770076

Woodhead - Molex

#22-2/#18-2 BLK PUR SHLD/TUBE

0

1200845189

1200845189

Woodhead - Molex

REC U12 4P AC FE M16 BM WIR SHD

0

1202310053

1202310053

Woodhead - Molex

M23-SIG-REC-MM-12P-CRIMP-90

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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