Circular Connectors

Image Part Number Description / PDF Quantity Rfq
822B006-273L501

822B006-273L501

NorComp

CONN RCPT FMALE 6P GOLD SLDR CUP

10

8P1P00617BJL421

8P1P00617BJL421

NorComp

CONN PLUG MALE 6POS SOLDER CUP

0

851-002-203R001

851-002-203R001

NorComp

CONN PLUG FMALE 2P GOLD SLDR CUP

2

8P1P00317BNL421

8P1P00317BNL421

NorComp

CONN PLUG MALE 3POS SOLDER CUP

0

8P1P01017NVL421

8P1P01017NVL421

NorComp

CONN PLUG MALE 10POS SOLDER CUP

0

8P1P01017NVL621

8P1P01017NVL621

NorComp

CONN PLUG MALE 10POS SOLDER CUP

0

8P1P00517BVL621

8P1P00517BVL621

NorComp

CONN PLUG MALE 5POS SOLDER CUP

0

8P1P00217NJL521

8P1P00217NJL521

NorComp

CONN PLUG MALE 2POS SOLDER CUP

0

850-002-103RLU1

850-002-103RLU1

NorComp

CONN RCPT MALE 2P GOLD SLDR CUP

86

820BR05-213R001

820BR05-213R001

NorComp

CONN RCPT FMALE 5POS GOLD SOLDER

49

8P1P01417NVL521

8P1P01417NVL521

NorComp

CONN PLUG MALE 14POS SOLDER CUP

0

821B008-203R001

821B008-203R001

NorComp

CONN RCPT FMALE 8P GOLD SLDR CUP

0

8P1P010210GRBR1

8P1P010210GRBR1

NorComp

CONN RCPT FMALE 10POS GOLD SLDR

0

854-004-203RLS4

854-004-203RLS4

NorComp

CONN PLUG FMALE 4P GOLD SLDR CUP

0

853-003-213R004

853-003-213R004

NorComp

CONN PLUG FMALE 3POS GOLD SOLDER

48

821B005-203RF01

821B005-203RF01

NorComp

CONN RCPT FMALE 5P GOLD SLDR CUP

9

8P1P00317BNL621

8P1P00317BNL621

NorComp

CONN PLUG MALE 3POS SOLDER CUP

0

822B008-203RF01

822B008-203RF01

NorComp

CONN RCPT FMALE 8P GOLD SLDR CUP

10

8P1P00317BVL621

8P1P00317BVL621

NorComp

CONN PLUG MALE 3POS SOLDER CUP

0

858-005-103RKT4

858-005-103RKT4

NorComp

CONN RCPT MALE 5P GOLD SLDR 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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