Circular Connectors

Image Part Number Description / PDF Quantity Rfq
M12A-04PMMC-SF8B15

M12A-04PMMC-SF8B15

LTW (Amphenol LTW)

CONN PLUG MALE 4P WIR LEAD 0.49'

158

MSDS-04PFFT-EE0001

MSDS-04PFFT-EE0001

LTW (Amphenol LTW)

CONN FMALE INSERT 4P GOLD SOLDER

100

FLBD-05EGFS-GCP-001

FLBD-05EGFS-GCP-001

LTW (Amphenol LTW)

CONN RCPT FMALE 5P GOLD SLDR CUP

25

FLKD-12EGFS-GCP-001

FLKD-12EGFS-GCP-001

LTW (Amphenol LTW)

CONN RCPT FMALE 12P SOLDER CUP

25

BBD-06RMFS-QC8001

BBD-06RMFS-QC8001

LTW (Amphenol LTW)

CONN RCPT FMALE 6P GOLD SLDR CUP

21

AD-02BMMB-QL8AP0

AD-02BMMB-QL8AP0

LTW (Amphenol LTW)

CONN RCPT MALE 2POS GOLD SCREW

21

BD-06RMMS-QC8001

BD-06RMMS-QC8001

LTW (Amphenol LTW)

CONN RCPT MALE 6P GOLD SLDR CUP

45

ACB-06BFFC-SL7AP0

ACB-06BFFC-SL7AP0

LTW (Amphenol LTW)

CONN PLUG FMALE 6POS GOLD CRIMP

33

CD-09BFMA-LL7001

CD-09BFMA-LL7001

LTW (Amphenol LTW)

CONN PLUG MALE 9P GOLD SLDR CUP

18

ABB-03PMMS-LC7001

ABB-03PMMS-LC7001

LTW (Amphenol LTW)

CONN RCPT MALE 3P GOLD SLDR CUP

41

DCU-08BFEA-LL7001

DCU-08BFEA-LL7001

LTW (Amphenol LTW)

CONN CIRC PLUG 8P GOLD SLDR CUP

0

FLBC-16FGMS-GCP-211

FLBC-16FGMS-GCP-211

LTW (Amphenol LTW)

CONN PLUG MALE 16P GOLD SLDR CUP

7

FLKD-02FGMS-GCP-215

FLKD-02FGMS-GCP-215

LTW (Amphenol LTW)

CONN PLUG MALE 2P GOLD SLDR CUP

10

FLKD-04EGFS-GCP-001

FLKD-04EGFS-GCP-001

LTW (Amphenol LTW)

CONN RCPT FMALE 4P GOLD SLDR CUP

12

PWF-04BMMA-SL7001

PWF-04BMMA-SL7001

LTW (Amphenol LTW)

POWER 12A

53

BU-10BFFA-LL7001

BU-10BFFA-LL7001

LTW (Amphenol LTW)

CONN PLUG FMALE 10P SOLDER CUP

69

CC-03BFFA-LL7001

CC-03BFFA-LL7001

LTW (Amphenol LTW)

CONN PLUG FMALE 3P GOLD SLDR CUP

0

BD-06BFFA-SL7001

BD-06BFFA-SL7001

LTW (Amphenol LTW)

CONN PLUG FMALE 6P GOLD SLDR CUP

70

BB-04PMMS-QC8001

BB-04PMMS-QC8001

LTW (Amphenol LTW)

CONN RCPT MALE 4P GOLD SLDR CUP

3

FLKC-04FGMS-GCP-213

FLKC-04FGMS-GCP-213

LTW (Amphenol LTW)

CONN PLUG MALE 4P GOLD SLDR CUP

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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