Circular Connectors

Image Part Number Description / PDF Quantity Rfq
CBU-08AFEM-TL7A10

CBU-08AFEM-TL7A10

LTW (Amphenol LTW)

MIDDLE

0

ABD-06RMFS-LC7001

ABD-06RMFS-LC7001

LTW (Amphenol LTW)

STANDARD STAMPING PIN

0

DC-04BFFA-SL7001

DC-04BFFA-SL7001

LTW (Amphenol LTW)

LARGE

0

M12B-05BMMB-SL7001

M12B-05BMMB-SL7001

LTW (Amphenol LTW)

M12 CONN SCREW IN 180

0

ADC-04PMMS-LS7001

ADC-04PMMS-LS7001

LTW (Amphenol LTW)

LARGE STAMPING PIN

0

CBD-08PMMS-QC8001

CBD-08PMMS-QC8001

LTW (Amphenol LTW)

MIDDLE RECEPTACLE(FRONT)

0

PWCU-04RMMS-LC7002

PWCU-04RMMS-LC7002

LTW (Amphenol LTW)

POWER 20A UL

0

8A-04PMMS-SF7001

8A-04PMMS-SF7001

LTW (Amphenol LTW)

M8 CONN WITH KEY

0

M12A-12PMMS-SH8002

M12A-12PMMS-SH8002

LTW (Amphenol LTW)

M12 PANEL SOLDER CONN

0

8A-05PMMP-SF7001

8A-05PMMP-SF7001

LTW (Amphenol LTW)

M8 CONN WITH KEY

0

ABD-02PMMS-LC7001

ABD-02PMMS-LC7001

LTW (Amphenol LTW)

STANDARD STAMPING PIN

0

DCU-08BMEA-LL7001

DCU-08BMEA-LL7001

LTW (Amphenol LTW)

LARGE

0

M12A-04PFFR-SF7003

M12A-04PFFR-SF7003

LTW (Amphenol LTW)

M12 CONN RIGHT ANGLE ACODE

0

M12A-08PFFS-SH8C15

M12A-08PFFS-SH8C15

LTW (Amphenol LTW)

CONN RCPT FML 8P WIR LEAD 0.49'

0

MSAP-08BMMA-SL8001

MSAP-08BMMA-SL8001

LTW (Amphenol LTW)

CONN RCPT MALE 8P GOLD SLDR CUP

0

CD-09BFFA-LL7001

CD-09BFFA-LL7001

LTW (Amphenol LTW)

MIDDLE

0

ADC-03PMMS-LC7001

ADC-03PMMS-LC7001

LTW (Amphenol LTW)

LARGE STAMPING PIN

0

CB-04BFMA-LL7001

CB-04BFMA-LL7001

LTW (Amphenol LTW)

MIDDLE

0

CC-02AFMM-QL8E02

CC-02AFMM-QL8E02

LTW (Amphenol LTW)

MIDDLE

0

CD-06AMFM-RL7A01

CD-06AMFM-RL7A01

LTW (Amphenol LTW)

MIDDLE

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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