Circular Connectors

Image Part Number Description / PDF Quantity Rfq
FLKB-05FGMS-GCP-209

FLKB-05FGMS-GCP-209

LTW (Amphenol LTW)

CONN PLUG MALE 5P GOLD SLDR CUP

24

PWF-02BMMA-SL7001

PWF-02BMMA-SL7001

LTW (Amphenol LTW)

POWER 12A

50

CC-02BFMB-QL8APP

CC-02BFMB-QL8APP

LTW (Amphenol LTW)

CONN PLUG MALE 2POS GOLD SCREW

21

ABD-08BFFC-SL7AP0

ABD-08BFFC-SL7AP0

LTW (Amphenol LTW)

CONN PLUG FMALE 8POS GOLD CRIMP

35

FLKB-09FGMS-GCP-209

FLKB-09FGMS-GCP-209

LTW (Amphenol LTW)

CONN PLUG MALE 9P GOLD SLDR CUP

15

FLKC-07FGMS-GCP-213

FLKC-07FGMS-GCP-213

LTW (Amphenol LTW)

CONN PLUG MALE 7P GOLD SLDR CUP

0

FLKD-04FGMS-GCP-215

FLKD-04FGMS-GCP-215

LTW (Amphenol LTW)

CONN PLUG MALE 4P GOLD SLDR CUP

16

FLKD-08EGFS-GCP-001

FLKD-08EGFS-GCP-001

LTW (Amphenol LTW)

CONN RCPT FMALE 8P GOLD SLDR CUP

72

MSAS-05PFFT-EE0001

MSAS-05PFFT-EE0001

LTW (Amphenol LTW)

CONN FMALE INSERT 5P GOLD SOLDER

202

FLKB-04FGMS-GCP-209

FLKB-04FGMS-GCP-209

LTW (Amphenol LTW)

CONN PLUG MALE 4P GOLD SLDR CUP

12

ACD-14PMMS-LC7001

ACD-14PMMS-LC7001

LTW (Amphenol LTW)

CONN RCPT MALE 14P GOLD SLDR CUP

58

FLKB-06EGFS-GCP-001

FLKB-06EGFS-GCP-001

LTW (Amphenol LTW)

CONN RCPT FMALE 6P GOLD SLDR CUP

0

M12A-04PFFS-SH8002

M12A-04PFFS-SH8002

LTW (Amphenol LTW)

CONN RCPT FMALE 4P GOLD SLDR CUP

26

PWE-07PMMS-SC7001

PWE-07PMMS-SC7001

LTW (Amphenol LTW)

6+ PE POWER 8A

35

MSAS-04BFFC-SL7001

MSAS-04BFFC-SL7001

LTW (Amphenol LTW)

CONN PLUG FMALE 4POS CRIMP

8

CB-04BFFA-LL7001

CB-04BFFA-LL7001

LTW (Amphenol LTW)

CONN PLUG FMALE 4P GOLD SLDR CUP

0

DD-18BMMA-LL7001

DD-18BMMA-LL7001

LTW (Amphenol LTW)

CONN RCPT MALE 18P GOLD SLDR CUP

31

M12A-05PFFS-SH8001

M12A-05PFFS-SH8001

LTW (Amphenol LTW)

CONN RCPT FMALE 5P GOLD SLDR CUP

67

M12A-12PFFS-SH8001

M12A-12PFFS-SH8001

LTW (Amphenol LTW)

CONN RCPT FMALE 12P SOLDER CUP

6

AU-06PMMP-LC7001

AU-06PMMP-LC7001

LTW (Amphenol LTW)

CONN RCPT MALE 6POS GOLD SOLDER

120

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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