Circular Connectors

Image Part Number Description / PDF Quantity Rfq
PXMBNI12FBF08ASCPG9

PXMBNI12FBF08ASCPG9

Bulgin

CONN PLUG FMALE 8POS SOLDER CUP

78

PXMBNI12FPF17AFLM16001

PXMBNI12FPF17AFLM16001

Bulgin

CONN PLUG FMALE 17P WIRE LEADS

24

PX0413/06S/PC

PX0413/06S/PC

Bulgin

CONN RCPT FMALE 6POS GOLD SOLDER

514

PXMBNI12RPM17AFLM12001

PXMBNI12RPM17AFLM12001

Bulgin

CONN RCPT MALE 17P WIRE LEAD

50

PXM7011/03P/ST/0709/SN

PXM7011/03P/ST/0709/SN

Bulgin

CONN RCPT MALE 3POS NICKEL SCREW

0

PX0747/P

PX0747/P

Bulgin

CONN RCPT MALE 4POS NICKEL SCREW

56

PX0732/S

PX0732/S

Bulgin

CONN RCPT FMALE 3P NICKEL SCREW

8

EXP-0921/04/S

EXP-0921/04/S

Bulgin

CONN RCPT FMALE 4P NICKEL SCREW

0

PXMBNI12RPF08APCM16

PXMBNI12RPF08APCM16

Bulgin

CONN PLUG FMALE 8POS GOLD SOLDER

35

PXMBNI12FBF04DSCPG7

PXMBNI12FBF04DSCPG7

Bulgin

CONN PLUG FMALE 4POS SOLDER CUP

94

EXP-0911/05/P

EXP-0911/05/P

Bulgin

CONN PLUG MALE 5POS NICKEL SCREW

13

PXMBNI16FBF03ASCPG9

PXMBNI16FBF03ASCPG9

Bulgin

CONN PLUG FMALE 3POS SOLDER CUP

80

PX0728/S

PX0728/S

Bulgin

CONN PLUG FMALE 9POS TIN CRIMP

37

PXPPAM12RAM08ASTPG9

PXPPAM12RAM08ASTPG9

Bulgin

CONN RCPT MALE 8POS GOLD SCREW

9

PXMBNI08RPF04AFL001

PXMBNI08RPF04AFL001

Bulgin

CONN PLUG FMALE 4P WIRE LEADS

24

EXP-0941/07/P

EXP-0941/07/P

Bulgin

CONN RCPT MALE 7POS NICKEL SCREW

0

PX0709/P/02

PX0709/P/02

Bulgin

CONN RCPT MALE 2POS NICKEL SCREW

0

SA3243

SA3243

Bulgin

CONN MALE INSERT 6P NICKEL SCREW

0

PXMBNI08FPM03AFL001

PXMBNI08FPM03AFL001

Bulgin

CONN RCPT MALE 3P WIRE LEADS

63

PX0707/S/25

PX0707/S/25

Bulgin

CONN RCPT FMALE 25POS GOLD SLDR

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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