Circular Connectors

Image Part Number Description / PDF Quantity Rfq
1200845182

1200845182

Woodhead - Molex

REC U12 12P AC MA M16 BM SOL SHD

0

1202300070

1202300070

Woodhead - Molex

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

0

1202300090

1202300090

Woodhead - Molex

M23-SIG-FF-16P-CRIMP-90-7-12

0

1202320032

1202320032

Woodhead - Molex

M23-SIG-INSERT-FEM-19P-SOLDER

0

1200845037

1200845037

Woodhead - Molex

MIC 4P U-L REC MALE BACK M16 S

0

0849070077

0849070077

Woodhead - Molex

CONN RCPT MALE 8POS GOLD SOLDER

0

1301880028

1301880028

Woodhead - Molex

MC 4P MR W/PC TAILS YEL

0

1302030118

1302030118

Woodhead - Molex

QC 3P FI GRAY RITEFLEX

0

1202310086

1202310086

Woodhead - Molex

M23-SIG-REC-MM-17P-CRIMP-BM

0

0848569110

0848569110

Woodhead - Molex

NMEA MINI, MALE TERMINATOR W/LED

0

1200850009

1200850009

Woodhead - Molex

M12U ATTACHABLE 4P MP 90D

0

1200845038

1200845038

Woodhead - Molex

REC U12 4P AC FE M16 BM WIR UNSH

0

1202340015

1202340015

Woodhead - Molex

M23-PWR-REC-MM-8P-CRIMP-90-28

0

1200705138

1200705138

Woodhead - Molex

M12-FLANSCH-ST-8P-SOLDER VERSION

0

1202340009

1202340009

Woodhead - Molex

M23-PWR-REC-MM-6P-CRIMP-90-25

0

1202340001

1202340001

Woodhead - Molex

M23-PWR-REC-FF-6P-CRIMP-FM

0

1200710008

1200710008

Woodhead - Molex

MIC 4P M/M ATTACH SOLDER 5-6

0

1300470039

1300470039

Woodhead - Molex

FA M12 4P DC MA STR SHLD 0,25-05

14

1302030331

1302030331

Woodhead - Molex

QC 3P F-A FEMALE INSERT

0

1200720063

1200720063

Woodhead - Molex

MIC 2P FP 6' 22/2 PVC N-M

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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