Circular Connectors

Image Part Number Description / PDF Quantity Rfq
ACB-04AFMM-SL7A01

ACB-04AFMM-SL7A01

LTW (Amphenol LTW)

MIDDLE STAMPING PIN

0

M12S-04PFFS-SF8C15

M12S-04PFFS-SF8C15

LTW (Amphenol LTW)

CONN RCPT FML 4P WIR LEAD 0.49'

0

CD-02AFFM-RL7A01

CD-02AFFM-RL7A01

LTW (Amphenol LTW)

MIDDLE

0

ACD-09PMFS-SC7001

ACD-09PMFS-SC7001

LTW (Amphenol LTW)

MIDDLE STAMPING PIN

0

CD-03BMFC-RL7001

CD-03BMFC-RL7001

LTW (Amphenol LTW)

MIDDLE

0

BB-03BFFA-SL6001

BB-03BFFA-SL6001

LTW (Amphenol LTW)

STANDARD

0

MSAP-08BMMB-SR7001

MSAP-08BMMB-SR7001

LTW (Amphenol LTW)

M12 CONN SCREW IN 90

0

PWCU-04RMFS-LC7001

PWCU-04RMFS-LC7001

LTW (Amphenol LTW)

POWER 20A+2A

0

ABD-03BFMM-SL7A01

ABD-03BFMM-SL7A01

LTW (Amphenol LTW)

STANDARD STAMPING PIN

0

M12A-04PMMP-SF8002

M12A-04PMMP-SF8002

LTW (Amphenol LTW)

M12 PANEL PCB CONN

0

CD-05RFMC-RC7B10

CD-05RFMC-RC7B10

LTW (Amphenol LTW)

MIDDLE

0

M8AS-06PFFT-EE0001

M8AS-06PFFT-EE0001

LTW (Amphenol LTW)

CONN FMALE INSERT 6P GOLD SOLDER

191

BD-04RMMS-QC8001

BD-04RMMS-QC8001

LTW (Amphenol LTW)

STANDARD RECEPTACLE(REAR)

0

ACB-04AFFM-SL7A01

ACB-04AFFM-SL7A01

LTW (Amphenol LTW)

MIDDLE STAMPING PIN

0

ABD-04PMFS-SC7001

ABD-04PMFS-SC7001

LTW (Amphenol LTW)

STANDARD STAMPING PIN

0

PWE-05BFFA-SL7001

PWE-05BFFA-SL7001

LTW (Amphenol LTW)

POWER 8A

0

PWF-02BFFA-SL7001

PWF-02BFFA-SL7001

LTW (Amphenol LTW)

POWER 12A

0

ABD-08RMMS-LC7001

ABD-08RMMS-LC7001

LTW (Amphenol LTW)

STANDARD STAMPING PIN

0

DC-07BFFA-SL7001

DC-07BFFA-SL7001

LTW (Amphenol LTW)

LARGE

0

M12A-06PMMS-SF8C15

M12A-06PMMS-SF8C15

LTW (Amphenol LTW)

CONN PLUG MALE 6P WIR LEAD 0.49'

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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