Circular Connectors

Image Part Number Description / PDF Quantity Rfq
1302030052

1302030052

Woodhead - Molex

MC 3P MALE RITEFLEX INSERT

0

1202300127

1202300127

Woodhead - Molex

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

0

1202300072

1202300072

Woodhead - Molex

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

0

1202300096

1202300096

Woodhead - Molex

M23-SIG-FF-17P-CRIMP-90-7-12

0

1200700502

1200700502

Woodhead - Molex

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

0

1202310031

1202310031

Woodhead - Molex

M23-SIG-REC-MM-12P-SOLDER-FM

0

1301970077

1301970077

Woodhead - Molex

MC QUAD SOCKET 22AWG GOLD

0

1200720056

1200720056

Woodhead - Molex

MIC 2P FP 1' 22/2 PVC

0

1200710060

1200710060

Woodhead - Molex

MIC 4P F-ATTCH STR PG9 SCRW SS

0

1300580118

1300580118

Woodhead - Molex

8 PORT MACHINE MOUNT SWITCH

0

1200900025

1200900025

Woodhead - Molex

NC 4P MR STR PCB MOUNT

0

0848649002

0848649002

Woodhead - Molex

CONN RCPT MALE 5POS GOLD SOLDER

0

1200700132

1200700132

Woodhead - Molex

MIC 4P F/FR 0.6M 18/1 PVC

0

1202300110

1202300110

Woodhead - Molex

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

0

1200720062

1200720062

Woodhead - Molex

MIC 2P FP 6' 22/2 SS

0

1202300050

1202300050

Woodhead - Molex

M23-SIG-FF-17P-CRIMP-Z-7-12

0

1200700390

1200700390

Woodhead - Molex

MIC 5P F/FR 5M BPM #18AWG PVC

0

1200704018

1200704018

Woodhead - Molex

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

0

1202300041

1202300041

Woodhead - Molex

M23-SIG-FF-16P-CRIMP-Z-7-12

0

1200700193

1200700193

Woodhead - Molex

MIC 4P MR 2M 1/2NPT #22/1 PVC

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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