Circular Connectors

Image Part Number Description / PDF Quantity Rfq
1807230000

1807230000

Weidmuller

CONN PLUG FMALE 4POS SCREW

2

9457700000

9457700000

Weidmuller

CONN PLUG FMALE 4POS SCREW

5

1784750000

1784750000

Weidmuller

CONN PLUG FMALE 5POS GOLD SCREW

21

1224640000

1224640000

Weidmuller

CONN MALE INSERT 12POS SOLDER

15

2421960000

2421960000

Weidmuller

CONN FMALE INSERT 5POS GOLD SLDR

0

9457240000

9457240000

Weidmuller

CONN PLUG FMALE 4POS SCREW

544

9457550000

9457550000

Weidmuller

CONN RCPT MALE 4POS SCREW

12135

2421780000

2421780000

Weidmuller

CONN FMALE INSERT 3POS GOLD SLDR

0

1224430000

1224430000

Weidmuller

CONN MALE INSERT 19POS SOLDER

16

1920980000

1920980000

Weidmuller

CONN RCPT FMALE 4POS SOLDER CUP

0

1807350000

1807350000

Weidmuller

CONN RCPT MALE 5POS SCREW

109

2421720000

2421720000

Weidmuller

CONN FMALE INSERT 3POS GOLD SLDR

0

1224260000

1224260000

Weidmuller

CONN MALE INSERT 16POS SOLDER

18

1224330000

1224330000

Weidmuller

CONN FMALE INSERT 17P SOLDER CUP

19

1224680000

1224680000

Weidmuller

CONN FMALE INSERT 17POS SOLDER

14

2421930000

2421930000

Weidmuller

CONN MALE INSERT 4POS GOLD SLDR

0

1224780000

1224780000

Weidmuller

CONN MALE INSERT 9POS SOLDER

18

1224420000

1224420000

Weidmuller

CONN FMALE INSERT 19POS SOLDER

223

1224180000

1224180000

Weidmuller

CONN MALE INSERT 12P SOLDER CUP

0

2423010000

2423010000

Weidmuller

CIRCULAR PLUG CONNECTOR, M8, NUM

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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