Circular Connectors

Image Part Number Description / PDF Quantity Rfq
21021512305

21021512305

HARTING

CONN RCPT FMALE 3POS GOLD IDC

1

21032961505

21032961505

HARTING

CONN PLUG MALE 5POS GOLD IDC

10

21033111816

21033111816

HARTING

CONN MALE INS M12 8P GOLD 75PCS

150

21031111405

21031111405

HARTING

CONN PLUG MALE 4POS GOLD IDC

14

21023692401

21023692401

HARTING

CONN PLUG FMALE 4POS GOLD SCREW

8

21033814422

21033814422

HARTING

CONN RCPT FMALE 4POS GOLD SOLDER

6

20820062001

20820062001

HARTING

CONN JACK FMALE 8POS GOLD IDC

6

21032962506

21032962506

HARTING

CONN PLUG FMALE 4POS GOLD IDC

28

21032121400

21032121400

HARTING

CONN PLUG MALE 3POS GOLD IDC

23

21033222410

21033222410

HARTING

CONN PLUG FMALE 4POS GOLD IDC

25

21420100003401

21420100003401

HARTING

CONN INSERT FMALE 4POS GOLD SLDR

46

21033712402

21033712402

HARTING

CONN RCPT FMALE 4POS GOLD SOLDER

13

21032122400

21032122400

HARTING

CONN RCPT FMALE 3POS GOLD IDC

24

21033492501

21033492501

HARTING

CONN PLUG FMALE 5POS GOLD SCREW

8

21033962505

21033962505

HARTING

PCB RECEPTACLE FEMALE L-CODED (6

57

21023592401

21023592401

HARTING

CONN RCPT FMALE 4POS GOLD SCREW

5

21420000005

21420000005

HARTING

CONN RCPT FMALE 4POS GOLD SOLDER

20

21033811418

21033811418

HARTING

CONN MALE INSERT 4POS GOLD SLDR

59

21033212518

21033212518

HARTING

CONN FMALE INSERT 5P GOLD SOLDER

0

21033822400

21033822400

HARTING

CONN PLUG FMALE 4POS GOLD IDC

6

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

RFQ BOM Call Skype Email
Top