Circular Connectors

Image Part Number Description / PDF Quantity Rfq
EXP-0931/03/P

EXP-0931/03/P

Bulgin

CONN RCPT MALE 3POS NICKEL SCREW

0

SA3244

SA3244

Bulgin

CONN FMALE INSERT 6P SCREW

22

PXMBNI12FIM03ASCPG7

PXMBNI12FIM03ASCPG7

Bulgin

CONN RCPT MALE 3POS SOLDER CUP

100

PXMBNI08FPF08AFLM11002

PXMBNI08FPF08AFLM11002

Bulgin

CONN PLUG FMALE 8P WIRE LEAD

50

PX0413/06P/PC

PX0413/06P/PC

Bulgin

CONN RCPT MALE 6POS GOLD SOLDER

0

PXMBNI05FPM04AFL001

PXMBNI05FPM04AFL001

Bulgin

CONN RCPT MALE 4P WIRE LEADS

25

PXM6011/03P/ST/0507

PXM6011/03P/ST/0507

Bulgin

CONN PLUG MALE 3POS NICKEL SCREW

0

PXM7010/02P/ST/0709/SN

PXM7010/02P/ST/0709/SN

Bulgin

CONN PLUG MALE 2POS NICKEL SCREW

0

PXP7010/02P/ST/0911

PXP7010/02P/ST/0911

Bulgin

CONN PLUG MALE 2POS NICKEL SCREW

18

PX0707/S/12

PX0707/S/12

Bulgin

CONN RCPT FMALE 12POS GOLD SLDR

0

PXMBNI12RPF05BPCM16

PXMBNI12RPF05BPCM16

Bulgin

CONN PLUG FMALE 5POS GOLD SOLDER

86

PXPPAM12FIM08ASTPG9

PXPPAM12FIM08ASTPG9

Bulgin

CONN RCPT MALE 8POS GOLD SCREW

0

PX0707/P/12

PX0707/P/12

Bulgin

CONN RCPT MALE 12POS GOLD SOLDER

60

PX0745/S

PX0745/S

Bulgin

CONN PLUG FMALE 7P NICKEL SCREW

11

PX0737/S

PX0737/S

Bulgin

CONN RCPT FMALE 2P NICKEL SCREW

0

PXP7011/03P/ST/1315

PXP7011/03P/ST/1315

Bulgin

CONN RCPT MALE 3POS NICKEL SCREW

14

EXP-0931/04/S

EXP-0931/04/S

Bulgin

CONN RCPT FMALE 4P NICKEL SCREW

0

PXPLCP12SMM05APC

PXPLCP12SMM05APC

Bulgin

CONN RCPT MALE 5POS GOLD SOLDER

50

PXP6012/02S/ST

PXP6012/02S/ST

Bulgin

CONN PLUG FMALE 2P NICKEL SCREW

0

PX0413/03P/PC

PX0413/03P/PC

Bulgin

CONN RCPT MALE 3POS GOLD SOLDER

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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