Circular Connectors

Image Part Number Description / PDF Quantity Rfq
1200845175

1200845175

Woodhead - Molex

REC U12 4P AC FE M16 BM SOL SHD

0

1202300165

1202300165

Woodhead - Molex

M23-SIG-MM-19P-CRIMP-Z-11-17

0

1202340013

1202340013

Woodhead - Molex

M23-PWR-REC-MM-6P-CRIMP-90-28

0

1202310014

1202310014

Woodhead - Molex

M23-SIG-REC-FF-16P-CRIMP-FM

0

1200700217

1200700217

Woodhead - Molex

MIC 5P F/FR 1M BPM #18AWG PVC

0

0848569101

0848569101

Woodhead - Molex

NMEA MINI, 5/C, FEMALE FIELD ATT

0

1202300030

1202300030

Woodhead - Molex

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

0

1202300020

1202300020

Woodhead - Molex

M23-SIG-FF-9P-SOLDER-Z-7-12

0

1300600018

1300600018

Woodhead - Molex

MC MPIS 8/3P FR W/3PMR SERIES

0

0848649003

0848649003

Woodhead - Molex

CONN RCPT MALE 5POS GOLD SOLDER

32

1200700164

1200700164

Woodhead - Molex

MIC 4P MR 90D PCB MOUNT

0

1200900012

1200900012

Woodhead - Molex

NC 3P MR STR PCB MOUNT

0

1300170036

1300170036

Woodhead - Molex

#1A4000-34

0

1200905072

1200905072

Woodhead - Molex

M8-3P-REC-SN/TH-BACK-PIN

0

1200850021

1200850021

Woodhead - Molex

FA U12 4P AC MA STR PG7 BK V4A

0

1301210066

1301210066

Woodhead - Molex

CONNECTOR

0

1300390072

1300390072

Woodhead - Molex

MC 5P F/FP LED TERMINATOR

0

1202330009

1202330009

Woodhead - Molex

M23-PWR-FF-6P-CRIMP-90-7-12

0

1300600004

1300600004

Woodhead - Molex

MC MPIS 4/3P FR 20'16/6 STO

0

1200770029

1200770029

Woodhead - Molex

MALE HOUSING/ SHIELDED DC MIC

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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