Circular Connectors

Image Part Number Description / PDF Quantity Rfq
851-004-103R001

851-004-103R001

NorComp

CONN RCPT MALE 4P GOLD SLDR CUP

84

8P1P00417BRL621

8P1P00417BRL621

NorComp

CONN PLUG MALE 4POS SOLDER CUP

0

8P1P00617NJL421

8P1P00617NJL421

NorComp

CONN PLUG MALE 6POS SOLDER CUP

0

8P1P009210GRBR1

8P1P009210GRBR1

NorComp

CONN RCPT FMALE 9POS GOLD SOLDER

8

860-004-213R001

860-004-213R001

NorComp

CONN PLUG FMALE 4POS GOLD SOLDER

0

8P1P01417NGL421

8P1P01417NGL421

NorComp

CONN PLUG MALE 14P GOLD SLDR CUP

16

860-R03-213R001

860-R03-213R001

NorComp

CONN PLUG FMALE 3POS GOLD SOLDER

0

852-002-113R004

852-002-113R004

NorComp

CONN RCPT MALE 2POS GOLD SOLDER

50

8P1P00917BVL621

8P1P00917BVL621

NorComp

CONN PLUG MALE 9POS SOLDER CUP

0

853-004-213R004

853-004-213R004

NorComp

CONN PLUG FMALE 4POS GOLD SOLDER

60

851-003-203R001

851-003-203R001

NorComp

CONN PLUG FMALE 3P GOLD SLDR CUP

116

853-004-213R001

853-004-213R001

NorComp

CONN PLUG FMALE 4POS GOLD SOLDER

173

821B008-203RF01

821B008-203RF01

NorComp

CONN RCPT FMALE 8P GOLD SLDR CUP

5

855-006-103R004

855-006-103R004

NorComp

CONN RCPT MALE 6P GOLD SLDR CUP

0

8P1P00417NNL521

8P1P00417NNL521

NorComp

CONN PLUG MALE 4POS SOLDER CUP

0

8P1P00917BGL521

8P1P00917BGL521

NorComp

CONN PLUG MALE 9P GOLD SLDR CUP

18

860-003-213R004

860-003-213R004

NorComp

CONN PLUG FMALE 3POS GOLD SOLDER

1

8P1P00817NAL421

8P1P00817NAL421

NorComp

CONN PLUG MALE 8POS SOLDER CUP

0

8P1P00317BJL421

8P1P00317BJL421

NorComp

CONN PLUG MALE 3POS SOLDER CUP

0

858-005-103RSS1

858-005-103RSS1

NorComp

CONN RCPT MALE 5POS SOLDER CUP

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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