Circular Connectors

Image Part Number Description / PDF Quantity Rfq
1302030238

1302030238

Woodhead - Molex

CONN MALE INSERT 8 POS

10

1202310029

1202310029

Woodhead - Molex

M23-SIG-REC-MM-9P-CRIMP-FM

0

1202310032

1202310032

Woodhead - Molex

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

0

1200310028

1200310028

Woodhead - Molex

NC-5P-5W-FE-REC-0.30M-PVC

0

1200720083

1200720083

Woodhead - Molex

MIC 2P FP 30' 90D 22/2

0

1200900051

1200900051

Woodhead - Molex

NC 4P MI PLASTIC SLEEVE PCB

0

0848549100

0848549100

Woodhead - Molex

CONN RCPT FMALE 5POS SOLDER CUP

0

1202310104

1202310104

Woodhead - Molex

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

0

1202300102

1202300102

Woodhead - Molex

M23-SIG-FF-19P-CRIMP-90-7-12

0

1200710089

1200710089

Woodhead - Molex

FA M12 4P AC FE STR IDC UNSH 0,3

0

1200700211

1200700211

Woodhead - Molex

MIC 5P F/FR 3M 22/1 PVC

0

1200720037

1200720037

Woodhead - Molex

MIC 3P MSPG AC JMPD 2-3

0

0849080218

0849080218

Woodhead - Molex

CONN RECEPT 3/C MALE W/D-FLAT

0

1200905080

1200905080

Woodhead - Molex

M8-5P-REC-SN/TH-BACK-PIN

0

1202300135

1202300135

Woodhead - Molex

M23-SIG-MM-12P-SOLDER-Z-11-17

0

1200720064

1200720064

Woodhead - Molex

MIC 2P FP 12FT. 22/2 BRD

0

1200700143

1200700143

Woodhead - Molex

MIC 4P F/FR BPM 2M DC #18 WSHR

0

1202310008

1202310008

Woodhead - Molex

M23-SIG-REC-FF-9P-CRIMP-FM

0

1202300005

1202300005

Woodhead - Molex

M23-SIG-FF-6P-CRIMP-Z-7-12

0

1200720068

1200720068

Woodhead - Molex

MIC 2P FP 20FT. 22/2 BRD

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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