Circular Connectors

Image Part Number Description / PDF Quantity Rfq
M12A-08PMMS-SF8002

M12A-08PMMS-SF8002

LTW (Amphenol LTW)

CONN PLUG MALE 8P GOLD SLDR CUP

0

CD-10BMMA-LL7001

CD-10BMMA-LL7001

LTW (Amphenol LTW)

CONN RCPT MALE 10P GOLD SLDR CUP

18

M12A-03PMMS-SH8001

M12A-03PMMS-SH8001

LTW (Amphenol LTW)

CONN PLUG MALE 3P GOLD SLDR CUP

6

M12A-04BMMB-SR7001

M12A-04BMMB-SR7001

LTW (Amphenol LTW)

CONN PLUG MALE 4POS GOLD SCREW

98

FLKB-03EGFS-GCP-001

FLKB-03EGFS-GCP-001

LTW (Amphenol LTW)

CONN RCPT FMALE 3P GOLD SLDR CUP

19

Q8U-05PMMS-QF8001

Q8U-05PMMS-QF8001

LTW (Amphenol LTW)

CONN RCPT MALE 5P GOLD SLDR CUP

36

M12D-04PFFC-SF8B15

M12D-04PFFC-SF8B15

LTW (Amphenol LTW)

CONN RCPT FML 4P WIR LEAD 0.49'

75

M8S-04PMMR-SF8001

M8S-04PMMR-SF8001

LTW (Amphenol LTW)

CONN PLUG MALE 4POS GOLD SOLDER

0

ABD-05PMFS-LC7001

ABD-05PMFS-LC7001

LTW (Amphenol LTW)

CONN RCPT FMALE 5P GOLD SLDR CUP

457

BD-05BMFA-QL8MP0

BD-05BMFA-QL8MP0

LTW (Amphenol LTW)

CONN RCPT FMALE 5POS GOLD CRIMP

2

MSBS-05PMMT-EE0001

MSBS-05PMMT-EE0001

LTW (Amphenol LTW)

CONN MALE INSERT 5POS GOLD SLDR

196

AD-02BFFB-QL8AP0

AD-02BFFB-QL8AP0

LTW (Amphenol LTW)

CONN PLUG FMALE 2POS GOLD SCREW

17

FLKC-04EGFS-GCP-001

FLKC-04EGFS-GCP-001

LTW (Amphenol LTW)

CONN RCPT FMALE 4P GOLD SLDR CUP

21

MSBS-05PFFP-SF8002

MSBS-05PFFP-SF8002

LTW (Amphenol LTW)

M12 PANEL PCB CONN

10

M12A-04PMMS-SF8001

M12A-04PMMS-SF8001

LTW (Amphenol LTW)

CONN PLUG MALE 4P GOLD SLDR CUP

148

FLBC-08FGMS-GCP-211

FLBC-08FGMS-GCP-211

LTW (Amphenol LTW)

CONN PLUG MALE 8P GOLD SLDR CUP

15

M12A-12PMMS-SF8001

M12A-12PMMS-SF8001

LTW (Amphenol LTW)

CONN PLUG MALE 12P GOLD SLDR CUP

584

M12D-04PMMP-SF8001

M12D-04PMMP-SF8001

LTW (Amphenol LTW)

CONN PLUG MALE 4POS GOLD SOLDER

99

ABB-04BFFC-LL7AP0

ABB-04BFFC-LL7AP0

LTW (Amphenol LTW)

CONN PLUG FMALE 4POS GOLD CRIMP

31

FLKD-02EGFS-GCP-001

FLKD-02EGFS-GCP-001

LTW (Amphenol LTW)

CONN RCPT FMALE 2P GOLD SLDR CUP

16

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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