Circular Connectors

Image Part Number Description / PDF Quantity Rfq
MSAS-05PFFR-SF7003

MSAS-05PFFR-SF7003

LTW (Amphenol LTW)

M12 CONN R/A ACODE SHIELDED

0

M12B-05PFFC-SF8C15

M12B-05PFFC-SF8C15

LTW (Amphenol LTW)

CONN RCPT FMAL 5P WIR LEAD 0.49'

0

ADC-04RMMS-LC7001

ADC-04RMMS-LC7001

LTW (Amphenol LTW)

LARGE STAMPING PIN

0

CD-07PMMS-QC8001

CD-07PMMS-QC8001

LTW (Amphenol LTW)

MIDDLE RECEPTACLE(FRONT)

0

ABD-08BFFM-LL7A01

ABD-08BFFM-LL7A01

LTW (Amphenol LTW)

STANDARD STAMPING PIN

0

MSAS-08PFFP-SF8002

MSAS-08PFFP-SF8002

LTW (Amphenol LTW)

M12 PANEL PCB CONN

0

8A-06PMMS-SF7001

8A-06PMMS-SF7001

LTW (Amphenol LTW)

M8 CONN WITH KEY

0

CDU-14BFMA-LL7001

CDU-14BFMA-LL7001

LTW (Amphenol LTW)

MIDDLE

0

M12A-10PMMP-SF8001

M12A-10PMMP-SF8001

LTW (Amphenol LTW)

M12 PANEL PCB CONN

0

MSAS-03BMMB-SR7001

MSAS-03BMMB-SR7001

LTW (Amphenol LTW)

M12 CONN SCREW IN 90

0

PWG-04BMMB-SR7002

PWG-04BMMB-SR7002

LTW (Amphenol LTW)

POWER 16A 90ANGLE

0

ACB-06BFFC-LL7AP0

ACB-06BFFC-LL7AP0

LTW (Amphenol LTW)

CONN PLUG FMALE 6POS GOLD CRIMP

35

PWL-03PMMB-TS7001

PWL-03PMMB-TS7001

LTW (Amphenol LTW)

POWER 30A

0

MSTP-04BMMB-SL7002

MSTP-04BMMB-SL7002

LTW (Amphenol LTW)

M12 SCREW IN MALE CONN

0

BD-03RMFS-QC800P

BD-03RMFS-QC800P

LTW (Amphenol LTW)

STANDARD RECEPTACLE(REAR)

0

BSD-08BFFM-SR6A01

BSD-08BFFM-SR6A01

LTW (Amphenol LTW)

STANDARD

0

BD-02RMMS-QC8001

BD-02RMMS-QC8001

LTW (Amphenol LTW)

STANDARD RECEPTACLE(REAR)

0

105-02PMFS-SC7001

105-02PMFS-SC7001

LTW (Amphenol LTW)

M 10.5 CONN

0

CDU-12BFMM-XL7A10

CDU-12BFMM-XL7A10

LTW (Amphenol LTW)

MIDDLE

0

CD-08BMMA-LL7001

CD-08BMMA-LL7001

LTW (Amphenol LTW)

CONN RCPT MALE 8P GOLD SLDR CUP

34

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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