Circular Connectors

Image Part Number Description / PDF Quantity Rfq
43-00092

43-00092

CONEC

CONN PLUG FMALE 4POS GOLD SCREW

975

41-00004

41-00004

CONEC

CONN RCPT MALE 3POS GOLD SCREW

2

41-40022

41-40022

CONEC

CONN PLUG FMALE 4POS GOLD SOLDER

55

43-01199

43-01199

CONEC

CONN PLUG FMALE 5POS GOLD SOLDER

5132

43-02797

43-02797

CONEC

CONN FMALE INSERT 8P GOLD SOLDER

0

43-02742

43-02742

CONEC

CONN PLUG FMALE 12POS GOLD SLDR

2

17-400373

17-400373

CONEC

CONN RCPT FMALE 2POS GOLD CRIMP

0

43-01193

43-01193

CONEC

CONN RCPT MALE 5POS GOLD SOLDER

0

41-40050

41-40050

CONEC

CONN RCPT MALE 5POS GOLD SOLDER

0

17-400133

17-400133

CONEC

CONN RCPT FMALE 2POS GOLD CRIMP

999

17-400343

17-400343

CONEC

CONN PLUG MALE 2POS GOLD CRIMP

0

17-400333

17-400333

CONEC

CONN PLUG MALE 2POS GOLD CRIMP

0

41-40049

41-40049

CONEC

CONN RCPT MALE 4POS GOLD SOLDER

0

43-02641

43-02641

CONEC

CONN PLUG FMALE 12POS GOLD SLDR

0

43-02798

43-02798

CONEC

CONN FMALE INSERT 12P GOLD SLDR

0

43-01201

43-01201

CONEC

CONN PLUG FMALE 4POS GOLD SOLDER

0

43-00096

43-00096

CONEC

CONN PLUG FMALE 4POS GOLD SCREW

0

43-02739

43-02739

CONEC

CONN PLUG FMALE 8POS GOLD SOLDER

0

17-400283

17-400283

CONEC

CONN PLUG MALE 3POS GOLD CRIMP

0

41-00006

41-00006

CONEC

CONN RCPT MALE 5POS GOLD SCREW

27

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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