Circular Connectors

Image Part Number Description / PDF Quantity Rfq
1200700258

1200700258

Woodhead - Molex

MIC 5P MR 2M #22 1/2 NPT DC

0

1202300137

1202300137

Woodhead - Molex

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

0

1202330001

1202330001

Woodhead - Molex

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

0

1202300029

1202300029

Woodhead - Molex

M23-SIG-FF-12P-SOLDER-Z-7-12

0

1202310016

1202310016

Woodhead - Molex

M23-SIG-REC-FF-17P-SOLDER-FM

0

1202310093

1202310093

Woodhead - Molex

M23-SIG-REC-MM-6P-PCB-M25

0

1200770108

1200770108

Woodhead - Molex

MC 5P SPLTR TO (2) 11MM DIN

0

1200704017

1200704017

Woodhead - Molex

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

0

1203410075

1203410075

Woodhead - Molex

CONN RCPT FMALE 8POS GOLD SOLDER

0

1302030239

1302030239

Woodhead - Molex

MC 9P FEM INSERT PVC C SIZE

0

1200845190

1200845190

Woodhead - Molex

REC U12 5P AC FE M16 BM WIR SHD

0

1300390373

1300390373

Woodhead - Molex

MC 5P M/MP A-B TERMINATOR SST

0

1202300085

1202300085

Woodhead - Molex

M23-SIG-FF-12P-CRIMP-90-11-17

0

1200700142

1200700142

Woodhead - Molex

MIC 4P F/FR BPM 1M DC #18 WSHR

0

1202310052

1202310052

Woodhead - Molex

CONN RCPT MALE 12POS GOLD SOLDER

0

1200840029

1200840029

Woodhead - Molex

MIC 4P FR ST PCB MOUNT

0

1300210010

1300210010

Woodhead - Molex

MALE HV STAT 1 PILOT

0

1202300058

1202300058

Woodhead - Molex

M23-SIG-FF-19P-CRIMP-Z-3-7

0

1202340003

1202340003

Woodhead - Molex

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

0

1202310050

1202310050

Woodhead - Molex

M23-SIG-REC-MM-9P-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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