Circular Connectors

Image Part Number Description / PDF Quantity Rfq
1300210004

1300210004

Woodhead - Molex

MALE CONNECTOR HV (OLD STYLE)

0

1205030003

1205030003

Woodhead - Molex

FA M12 4P SC MA STR UNSH PG11 SC

0

1202300103

1202300103

Woodhead - Molex

M23-SIG-FF-19P-CRIMP-90-11-17

0

1202300059

1202300059

Woodhead - Molex

M23-SIG-FF-19P-CRIMP-Z-7-12

0

1300170065

1300170065

Woodhead - Molex

FA MC 4P 0C FE STR PG13.5 UNSH B

0

1300370015

1300370015

Woodhead - Molex

TOP MOUNT 4 OUTLET .5M DEV-NET

0

1200700501

1200700501

Woodhead - Molex

MIC 5P MR 3M 18/1 PVC

0

1202310106

1202310106

Woodhead - Molex

M23-SIG-REC-MM-12P-CRIMP-M25

0

1202310017

1202310017

Woodhead - Molex

M23-SIG-REC-FF-17P-CRIMP-FM

0

1200845092

1200845092

Woodhead - Molex

REC U12 12P AC FE STR M16 BM SOL

0

1728600710

1728600710

Woodhead - Molex

CONN RCPT FMALE 7POS SOLDER CUP

0

1202310005

1202310005

Woodhead - Molex

M23-SIG-REC-FF-7P-CRIMP-FM

0

1202300136

1202300136

Woodhead - Molex

M23-SIG-MM-12P-CRIMP-Z-3-7

0

1200110281

1200110281

Woodhead - Molex

MMC-4P-M/M-REC-PC-TAILS-PG9

0

1202300033

1202300033

Woodhead - Molex

M23-SIG-FF-12P-CRIMP-Z-11-17

0

1200700234

1200700234

Woodhead - Molex

MIC 5P MR BPM 30CM #22/1 PG9

0

1200700256

1200700256

Woodhead - Molex

MIC 5P MR 0.3M #22 1/2-14 NPT

0

1200720086

1200720086

Woodhead - Molex

MIC 2P FP 6' 90D 22/2PVC SS

0

1200700203

1200700203

Woodhead - Molex

MIC 5P F/FR 24INC 22/1 PVC

0

1300350006

1300350006

Woodhead - Molex

MC 4P INLINE AUX POWER MONITOR

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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