Circular Connectors

Image Part Number Description / PDF Quantity Rfq
MKJ3A7W12-37PN

MKJ3A7W12-37PN

VEAM

CONN RCPT MALE 37POS GOLD CRIMP

0

CA08COME28-11PB01

CA08COME28-11PB01

VEAM

CONN PLUG MALE 22P SILVER CRIMP

0

MKJ3B7W6-7SN

MKJ3B7W6-7SN

VEAM

CONN RCPT FMALE 7POS GOLD CRIMP

0

PLC1G023A05

PLC1G023A05

VEAM

CIRCULAR

0

PLC1G523H03

PLC1G523H03

VEAM

CIRCULAR

0

CA06COMPG28-15PWBF80

CA06COMPG28-15PWBF80

VEAM

CONN PLUG MALE 35P SILVER CRIMP

0

PLA1G221002

PLA1G221002

VEAM

CONN PLUG MALE 2POS SOLDER CUP

0

PLC1G822002

PLC1G822002

VEAM

CIRCULAR

0

PLB1G120010

PLB1G120010

VEAM

CONN RCPT FMALE 10P SOLDER CUP

5

PLB1G220002

PLB1G220002

VEAM

CONN RCPT FMALE 2POS SOLDER CUP

1

PLC1G221005

PLC1G221005

VEAM

CIRCULAR

0

PLC1G121A04

PLC1G121A04

VEAM

CIRCULAR

0

PLB4G520009

PLB4G520009

VEAM

CONN RCPT FMALE 9POS SOLDER CUP

5

CA06COMPG28A16SB

CA06COMPG28A16SB

VEAM

CONN PLUG FMALE 9P SILV SLDR CUP

0

PLC1G523008

PLC1G523008

VEAM

CIRCULAR

0

PLC1G123A02

PLC1G123A02

VEAM

CIRCULAR

0

MKJ5C7F8-7DA

MKJ5C7F8-7DA

VEAM

CONN RCPT FMALE 7POS GOLD SOLDER

0

PLC1G023J10

PLC1G023J10

VEAM

CIRCULAR

0

PLC1G123007

PLC1G123007

VEAM

CIRCULAR

0

PLB4G020003

PLB4G020003

VEAM

CONN RCPT FMALE 3POS SOLDER CUP

36

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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