Circular Connectors

Image Part Number Description / PDF Quantity Rfq
G51L0C-P05LJG0-0000

G51L0C-P05LJG0-0000

ODU

CONN RCPT FMALE 5P GOLD SLDR CUP

59

K11K0C-P16LCC0-6000

K11K0C-P16LCC0-6000

ODU

CONN RCPT FMALE 16P SOLDER CUP

10

K10YAR-P07WCD0-0000

K10YAR-P07WCD0-0000

ODU

CONN RCPT FMALE 7P GOLD SLDR CUP

29

S21F1C-P03MPH0-500S

S21F1C-P03MPH0-500S

ODU

CONN PLUG MALE 3P GOLD SLDR CUP

10

S10K0C-P03MJG0-4000

S10K0C-P03MJG0-4000

ODU

CONN PLUG MALE 3P GOLD SLDR CUP

10

K21K0C-P07LFG0-550S

K21K0C-P07LFG0-550S

ODU

CONN RCPT FMALE 7P GOLD SLDR CUP

10

S30F1C-P05MFG0-5000

S30F1C-P05MFG0-5000

ODU

CONN PLUG MALE 5P GOLD SLDR CUP

10

K11K0C-P05LJG0-5000

K11K0C-P05LJG0-5000

ODU

CONN RCPT FMALE 5P GOLD SLDR CUP

9

K21L0C-P03LPH0-620S

K21L0C-P03LPH0-620S

ODU

CONN RCPT FMALE 3P GOLD SLDR CUP

10

G51L0C-P07LFG0-0000

G51L0C-P07LFG0-0000

ODU

CONN RCPT FMALE 7P GOLD SLDR CUP

47

K21M07-P09LCC0-527S

K21M07-P09LCC0-527S

ODU

CONN RCPT FMALE 9P GOLD SLDR CUP

50

GK0WAM-P09UM00-000L

GK0WAM-P09UM00-000L

ODU

CONN RCPT FMALE 9POS SOLDER

53

S10K0C-P05MFG0-3500

S10K0C-P05MFG0-3500

ODU

CONN PLUG MALE 5P GOLD SLDR CUP

9

S11M07-P05MJG0-3970

S11M07-P05MJG0-3970

ODU

CONN PLUG MALE 5P GOLD SLDR CUP

50

K11M07-P08LFG0-3970

K11M07-P08LFG0-3970

ODU

CONN RCPT FMALE 8P GOLD SLDR CUP

33

756-199-402-000-000

756-199-402-000-000

ODU

CONN RCPT FMALE 4P GOLD SLDR CUP

113

G5CL0C-P04LCC0-0000

G5CL0C-P04LCC0-0000

ODU

CONN RCPT FMALE 4P GOLD SLDR CUP

22

S30F1C-P03MJG0-4000

S30F1C-P03MJG0-4000

ODU

CONN PLUG MALE 3P GOLD SLDR CUP

10

S11F1C-P05MJG0-4500

S11F1C-P05MJG0-4500

ODU

CONN PLUG MALE 5P GOLD SLDR CUP

19

S20F1C-P09MCC0-450S

S20F1C-P09MCC0-450S

ODU

CONN PLUG MALE 9P GOLD SLDR CUP

10

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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