Circular Connectors

Image Part Number Description / PDF Quantity Rfq
PLA1G422006

PLA1G422006

VEAM

CONN PLUG MALE 6POS SOLDER CUP

0

MS3108R14S-7S

MS3108R14S-7S

VEAM

CONN PLUG FMALE 3P SOLDER CUP

0

PLA1G521004

PLA1G521004

VEAM

CONN PLUG MALE 4POS SOLDER CUP

36

MKJ1A7F13-37SA

MKJ1A7F13-37SA

VEAM

MKJ 37C 37#23 SKT RECP DBL NI

0

PLC1G823C03

PLC1G823C03

VEAM

CIRCULAR

0

PLB4G520006

PLB4G520006

VEAM

CONN RCPT FMALE 6POS SOLDER CUP

5

PLC1G423A02

PLC1G423A02

VEAM

CIRCULAR

0

PLC1G021A07

PLC1G021A07

VEAM

CIRCULAR

0

PLC1G423J04

PLC1G423J04

VEAM

CIRCULAR

0

PLC1G222J04

PLC1G222J04

VEAM

CIRCULAR

0

PLC1G121E07

PLC1G121E07

VEAM

CIRCULAR

0

PLC1G222E02

PLC1G222E02

VEAM

CIRCULAR

0

PLC1G521E09

PLC1G521E09

VEAM

CIRCULAR

0

MKJ1A7F6-7PA

MKJ1A7F6-7PA

VEAM

CONN RCPT MALE 7POS GOLD CRIMP

0

PLC1G023C03

PLC1G023C03

VEAM

CIRCULAR

0

PLC1G522E10

PLC1G522E10

VEAM

CIRCULAR

0

PLB3G520014

PLB3G520014

VEAM

CONN RCPT FMALE 14POS GOLD SLDR

5

PLC1G823H02

PLC1G823H02

VEAM

CIRCULAR

0

PLC1G521J05

PLC1G521J05

VEAM

CIRCULAR

0

PLC1G622C07

PLC1G622C07

VEAM

CIRCULAR

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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