Circular Connectors

Image Part Number Description / PDF Quantity Rfq
1200700173

1200700173

Woodhead - Molex

MIC 4P F/FR 12IN 1/2NPT #22 PVC

0

1202300037

1202300037

Woodhead - Molex

M23-SIG-FF-16P-SOLDER-Z D3-7

0

1202330005

1202330005

Woodhead - Molex

M23-PWR-FF-8P-CRIMP-Z-7-12

0

1300170037

1300170037

Woodhead - Molex

1A4002-34

0

1202340011

1202340011

Woodhead - Molex

M23-PWR-REC-MM-8P-CRIMP-90-25

0

1200845091

1200845091

Woodhead - Molex

REC U12 12P AC MA STR M16 BM SOL

0

1202310056

1202310056

Woodhead - Molex

M23-SIG-REC-MM-16P-CRIMP-90

0

1201490095

1201490095

Woodhead - Molex

NC 5P F/FR PCB M12 MOUNTING

0

1300370010

1300370010

Woodhead - Molex

TOP MOUNT 8 OUTLET 2M DVC/NET

0

1202320062

1202320062

Woodhead - Molex

M23-SIG-CONT1.0-MALE-0.14-1.0

0

1202300051

1202300051

Woodhead - Molex

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

0

1300170063

1300170063

Woodhead - Molex

FA MC 3P 0C FE STR PG13.5 UNSH B

0

1300360006

1300360006

Woodhead - Molex

MC MPIS DN PASS-THRU 4 PORT

0

1202300138

1202300138

Woodhead - Molex

M23-SIG-MM-12P-CRIMP-Z-11-17

0

1300600014

1300600014

Woodhead - Molex

MC MPIS 6/3P FR 6FT 16/8 STO

0

1202300100

1202300100

Woodhead - Molex

M23-SIG-FF-19P-SOLDER-90-7-12

0

1300360012

1300360012

Woodhead - Molex

MC MPIS DND PASS-THRU 4 PORT

0

1200700261

1200700261

Woodhead - Molex

MIC 5P MR 3M 22/1 PVC

0

1300340008

1300340008

Woodhead - Molex

MIC 5P M/M-ATTCH STR PG9 DNET

0

1200700084

1200700084

Woodhead - Molex

MIC 3P MR STR PCB MOUNT

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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