Circular Connectors

Image Part Number Description / PDF Quantity Rfq
RTHP6161SNH35S2

RTHP6161SNH35S2

Tuchel / Amphenol

CONN PLUG FMALE 1P SILVER CRIMP

0

850-003-203RSS4

850-003-203RSS4

NorComp

CONN PLUG FMALE 3P GOLD SLDR CUP

27

AE156T13B35PB

AE156T13B35PB

PEI-Genesis

CONN RCPT MALE 22POS GOLD CRIMP

17

8P1P00617BRL421

8P1P00617BRL421

NorComp

CONN PLUG MALE 6POS SOLDER CUP

0

D38999/26WJ4SN

D38999/26WJ4SN

Amphenol Aerospace Operations

CONN PLUG FMALE 56POS GOLD CRIMP

0

EN3C3MCX

EN3C3MCX

Switchcraft / Conxall

CONN PLUG MALE 3POS GOLD CRIMP

10

AE326WD97BN

AE326WD97BN

PEI-Genesis

CONN PLUG FMALE 12POS CRIMP

0

225457

225457

ERNI Electronics

CONN FMALE INSERT 5P GOLD SOLDER

499

JBXFD2G05MCSDSMR

JBXFD2G05MCSDSMR

Souriau-Sunbank by Eaton

CONN PLUG MALE 5POS GOLD CRIMP

0

M-XL-6-12L

M-XL-6-12L

VEAM

CONN PLUG MALE MINI XLR 6P SLDR

0

50-00965

50-00965

Tensility International Corporation

CONN RCPT FMALE 3P GOLD SLDR CUP

0

PXMBNI12RAM04APCM12

PXMBNI12RAM04APCM12

Bulgin

CONN RCPT MALE 4POS GOLD SOLDER

25

AE208E18B28SA

AE208E18B28SA

PEI-Genesis

CONN RCPT FMALE 28POS CRIMP

19

AE105E25B24S

AE105E25B24S

PEI-Genesis

CONN RCPT FMALE 24POS CRIMP

18

MS27508E22F21AA

MS27508E22F21AA

PEI-Genesis

CONN RCPT MALE 21POS CRIMP

3

AE771L12-10PW

AE771L12-10PW

PEI-Genesis

CONN RCPT MALE 10POS GOLD CRIMP

139

AE284T12B4BA

AE284T12B4BA

PEI-Genesis

CONN PLUG FMALE 4POS CRIMP

0

AE83382G2457N

AE83382G2457N

PEI-Genesis

CONN RCPT FMALE 57POS CRIMP

42

MS27472T10B5PA

MS27472T10B5PA

Amphenol Aerospace Operations

CONN RCPT MALE 5POS GOLD CRIMP

0

MS3456KT32-1PX

MS3456KT32-1PX

PEI-Genesis

CONN PLUG MALE 5POS GOLD CRIMP

24

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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