Circular Connectors

Image Part Number Description / PDF Quantity Rfq
21031212801

21031212801

HARTING

CONN PLUG FMALE 8POS GOLD IDC

12

21033812813

21033812813

HARTING

CONN RCPT FMALE 8POS GOLD SOLDER

14

21033961531

21033961531

HARTING

CONN CIRC RCPT 5POS GOLD SOLDER

10

21033211803

21033211803

HARTING

CONN MALE INS M12 8P GOLD 75PCS

150

21023591401

21023591401

HARTING

CONN PLUG MALE 4POS GOLD SCREW

66

20820050001

20820050001

HARTING

CONN PLUG MALE 4POS GOLD IDC

3

21033212830

21033212830

HARTING

CONN PLUG FMALE 8POS GOLD SOLDER

57

21033812421

21033812421

HARTING

CONN RCPT FMALE 4POS GOLD SOLDER

8

21033411425

21033411425

HARTING

CONN PLUG MALE 2POS GOLD IDC

7

21033814809

21033814809

HARTING

CONN PLUG FMALE 8POS GOLD SOLDER

0

21032411301

21032411301

HARTING

CONN PLUG MALE 2POS GOLD IDC

4

21033211420

21033211420

HARTING

CONN PLUG MALE 4POS GOLD SOLDER

18

21033211410

21033211410

HARTING

CONN PLUG MALE 4POS GOLD SOLDER

10

21033291401

21033291401

HARTING

CONN RCPT MALE 4POS GOLD SCREW

6

21033814410

21033814410

HARTING

CONN RCPT FMALE 4POS GOLD SOLDER

127

21033111416

21033111416

HARTING

CONN MALE INSERT 4POS SOLDER

150

21033211520

21033211520

HARTING

CONN PLUG MALE 5POS GOLD SOLDER

60

21033194401

21033194401

HARTING

CONN RCPT FMALE 4POS GOLD SCREW

17

09151122702

09151122702

HARTING

CONN FMALE INSERT 12P SOLDER CUP

7

21033211830

21033211830

HARTING

CONN RCPT MALE 8POS GOLD SOLDER

11

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