Circular Connectors

Image Part Number Description / PDF Quantity Rfq
FLBB-04FGMS-GCP-207

FLBB-04FGMS-GCP-207

LTW (Amphenol LTW)

CONN PLUG MALE 4P GOLD SLDR CUP

11

M12A-05BMME-SL8001

M12A-05BMME-SL8001

LTW (Amphenol LTW)

CONN PLUG MALE 5POS CLAMP

8

M12A-05PMMS-SF8001

M12A-05PMMS-SF8001

LTW (Amphenol LTW)

CONN PLUG MALE 5P GOLD SLDR CUP

221

CBD-08PMFS-QC8001

CBD-08PMFS-QC8001

LTW (Amphenol LTW)

CONN RCPT FMALE 8P GOLD SLDR CUP

36

CB-05BFFA-LL7001

CB-05BFFA-LL7001

LTW (Amphenol LTW)

CONN PLUG FMALE 5P GOLD SLDR CUP

21

BD-06BFFA-LL7001

BD-06BFFA-LL7001

LTW (Amphenol LTW)

CONN PLUG FMALE 6P GOLD SLDR CUP

0

FLBC-16EGFS-GCP-001

FLBC-16EGFS-GCP-001

LTW (Amphenol LTW)

CONN RCPT FMALE 16P SOLDER CUP

20

BD-03RMFS-QC8001

BD-03RMFS-QC8001

LTW (Amphenol LTW)

CONN RCPT FMALE 3P GOLD SLDR CUP

43

DD-18PMMP-LC7001

DD-18PMMP-LC7001

LTW (Amphenol LTW)

CONN RCPT MALE 18POS GOLD SOLDER

200

BD-05PMFS-QC8001

BD-05PMFS-QC8001

LTW (Amphenol LTW)

CONN RCPT FMALE 5P GOLD SLDR CUP

0

ACD-07PMFS-SC7001

ACD-07PMFS-SC7001

LTW (Amphenol LTW)

CONN RCPT FMALE 7P GOLD SLDR CUP

0

FLKC-08EGFS-GCP-001

FLKC-08EGFS-GCP-001

LTW (Amphenol LTW)

CONN RCPT FMALE 8P GOLD SLDR CUP

4

FLKC-16EGFS-GCP-001

FLKC-16EGFS-GCP-001

LTW (Amphenol LTW)

CONN RCPT FMALE 16P SOLDER CUP

14

FLKD-10EGFS-GCP-001

FLKD-10EGFS-GCP-001

LTW (Amphenol LTW)

CONN RCPT FMALE 10P SOLDER CUP

34

AAD-02PMMS-LC7001

AAD-02PMMS-LC7001

LTW (Amphenol LTW)

CONN RCPT MALE 2P GOLD SLDR CUP

1133

CB-04BMFA-QL8MP0

CB-04BMFA-QL8MP0

LTW (Amphenol LTW)

CONN RCPT FMALE 4POS GOLD CRIMP

37

BU-10PMMS-LC7001

BU-10PMMS-LC7001

LTW (Amphenol LTW)

CONN RCPT MALE 10P GOLD SLDR CUP

0

PWM-02BFMB-TL7001

PWM-02BFMB-TL7001

LTW (Amphenol LTW)

CONN PLUG MALE 2POS SCREW

1

M12A-04PMMP-SF8001

M12A-04PMMP-SF8001

LTW (Amphenol LTW)

CONN PLUG MALE 4POS GOLD SOLDER

0

CBD-08RMFS-QC8001

CBD-08RMFS-QC8001

LTW (Amphenol LTW)

CONN RCPT FMALE 8P GOLD SLDR CUP

2

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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