Circular Connectors

Image Part Number Description / PDF Quantity Rfq
V3-GM

V3-GM

Pepperl+Fuchs

CONN PLUG FMALE 3POS GOLD SCREW

15

V1-G-Q3

V1-G-Q3

Pepperl+Fuchs

CONN PLUG FMALE 4POS GOLD IDC

29

V1S-G-PG9

V1S-G-PG9

Pepperl+Fuchs

CONN PLUG MALE 4P COPPER SCREW

15

V1-W-BK

V1-W-BK

Pepperl+Fuchs

CONN PLUG FMALE 4P COPPER SCREW

81

V12-G

V12-G

Pepperl+Fuchs

CONN PLUG FMALE 3POS GOLD SCREW

13

V15-G-PG9

V15-G-PG9

Pepperl+Fuchs

CONN PLUG FMALE 5P COPPER SCREW

20

V1-W-PG9

V1-W-PG9

Pepperl+Fuchs

CONN PLUG FMALE 4P COPPER SCREW

20

V1-G-PG9

V1-G-PG9

Pepperl+Fuchs

CONN PLUG FMALE 4P COPPER SCREW

10

V31S-GM

V31S-GM

Pepperl+Fuchs

CONN PLUG MALE 4POS GOLD SCREW

13

V1S-G-Q2

V1S-G-Q2

Pepperl+Fuchs

CONN PLUG MALE 4POS GOLD IDC

25

V1S-G-Q3

V1S-G-Q3

Pepperl+Fuchs

CONN PLUG MALE 4POS GOLD IDC

15

V1-G-BK

V1-G-BK

Pepperl+Fuchs

CONN PLUG FMALE 4P COPPER SCREW

19

V3S-GM

V3S-GM

Pepperl+Fuchs

CONN PLUG MALE 3POS GOLD SCREW

25

V3S-GM-Q4

V3S-GM-Q4

Pepperl+Fuchs

CONN PLUG MALE 3POS GOLD IDC

25

V1-G-Q2

V1-G-Q2

Pepperl+Fuchs

CONN PLUG FMALE 4POS GOLD IDC

23

V1S-G-BK

V1S-G-BK

Pepperl+Fuchs

CONN PLUG MALE 4P COPPER SCREW

24

V31S-GM-Q4

V31S-GM-Q4

Pepperl+Fuchs

CONN PLUG MALE 4POS GOLD IDC

25

V15S-G-PG9

V15S-G-PG9

Pepperl+Fuchs

CONN PLUG MALE 5P COPPER SCREW

5

V1S-W-BK

V1S-W-BK

Pepperl+Fuchs

CONN PLUG MALE 4P COPPER SCREW

15

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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