Circular Connectors

Image Part Number Description / PDF Quantity Rfq
M12A-03PMMP-SF8001

M12A-03PMMP-SF8001

LTW (Amphenol LTW)

CONN PLUG MALE 3POS GOLD SOLDER

0

DC-03BMFA-QL8SPP

DC-03BMFA-QL8SPP

LTW (Amphenol LTW)

CONN RCPT FMALE 3POS GOLD CRIMP

0

FLBC-07FGMS-GCP-211

FLBC-07FGMS-GCP-211

LTW (Amphenol LTW)

CONN PLUG MALE 7P GOLD SLDR CUP

25

PWM-02RMFS-TS7001

PWM-02RMFS-TS7001

LTW (Amphenol LTW)

CONN RCPT FMALE 2POS SOLDER

1

M12A-05BFFB-SR7001

M12A-05BFFB-SR7001

LTW (Amphenol LTW)

CONN RCPT FMALE 5POS GOLD SCREW

10

AD-04BFFB-QL8AP0

AD-04BFFB-QL8AP0

LTW (Amphenol LTW)

CONN PLUG FMALE 4POS GOLD SCREW

45

BB-03BFFA-LL7001

BB-03BFFA-LL7001

LTW (Amphenol LTW)

CONN PLUG FMALE 3P GOLD SLDR CUP

34

ABB-02PMFS-LC7001

ABB-02PMFS-LC7001

LTW (Amphenol LTW)

CONN RCPT FMALE 2P GOLD SLDR CUP

81

FLBD-10EGFS-GCP-001

FLBD-10EGFS-GCP-001

LTW (Amphenol LTW)

CONN RCPT FMALE 10P SOLDER CUP

8

ACBD-08BFFC-LL7AP0

ACBD-08BFFC-LL7AP0

LTW (Amphenol LTW)

CONN PLUG FMALE 8POS GOLD CRIMP

32

BB-04BMMA-LL7001

BB-04BMMA-LL7001

LTW (Amphenol LTW)

CONN RCPT MALE 4P GOLD SLDR CUP

6

AU-06PMMS-LC7001

AU-06PMMS-LC7001

LTW (Amphenol LTW)

CONN RCPT MALE 6P GOLD SLDR CUP

163

BB-02PMMS-QC8001

BB-02PMMS-QC8001

LTW (Amphenol LTW)

CONN RCPT MALE 2P GOLD SLDR CUP

5

FLBD-05FGMS-GCP-214

FLBD-05FGMS-GCP-214

LTW (Amphenol LTW)

CONN PLUG MALE 5P GOLD SLDR CUP

25

CD-10BFFA-LL7001

CD-10BFFA-LL7001

LTW (Amphenol LTW)

CONN PLUG FMALE 10P SOLDER CUP

0

AD-03BFFB-QL8AP0

AD-03BFFB-QL8AP0

LTW (Amphenol LTW)

CONN PLUG FMALE 3POS GOLD SCREW

12

M12A-05BFFA-SL8001

M12A-05BFFA-SL8001

LTW (Amphenol LTW)

CONN PLUG FMALE 5POS SOLDER CUP

1378

AD-02PMMP-QC8001

AD-02PMMP-QC8001

LTW (Amphenol LTW)

CONN RCPT MALE 2POS GOLD SOLDER

0

M12S-04PFFS-SF8B15

M12S-04PFFS-SF8B15

LTW (Amphenol LTW)

CONN RCPT FMAL 4P WIR LEAD 0.49'

0

FLKD-07EGFS-GCP-001

FLKD-07EGFS-GCP-001

LTW (Amphenol LTW)

CONN RCPT FMALE 7P GOLD SLDR CUP

24

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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