Circular Connectors

Image Part Number Description / PDF Quantity Rfq
LF13WBRB-20P

LF13WBRB-20P

Hirose

CONN RCPT MALE

0

HR10G-7J-4S(73)

HR10G-7J-4S(73)

Hirose

CONN JACK FMALE 4P SOLDER CUP

0

RM15WTRZ-4S(81)

RM15WTRZ-4S(81)

Hirose

CONN RCPT FMALE 4POS SOLDER CUP

0

RM15WTRZ-8P(72)

RM15WTRZ-8P(72)

Hirose

CONN RCPT MALE 8P GOLD SLDR CUP

0

JR25WRHA-4S

JR25WRHA-4S

Hirose

CONN RCPT 4POS SKT

0

RM15QRD-4SA(81)

RM15QRD-4SA(81)

Hirose

CONN RCPT FMALE 4POS SOLDER CUP

0

RP9-7R-4S

RP9-7R-4S

Hirose

CONNECTOR

0

EM30M-WBP-1PCA-K

EM30M-WBP-1PCA-K

Hirose

CONN CIRC PLUG

0

RM31TP-55P(71)

RM31TP-55P(71)

Hirose

CONN PLUG 55POS PIN

0

EM52M-BR-4SCA

EM52M-BR-4SCA

Hirose

CONN CIRC RCPT

0

SR30D-10J-4SA(71)

SR30D-10J-4SA(71)

Hirose

CONN JACK

0

RM15WTRZA-4S(81)

RM15WTRZA-4S(81)

Hirose

CONN RCPT FMALE 4POS SOLDER CUP

0

JR16WP-10P(31)

JR16WP-10P(31)

Hirose

CONN PLUG MALE 10P SOLDER CUP

176

RM15WTRZA-8S(71)

RM15WTRZA-8S(71)

Hirose

CONN RCPT FMALE 8P SOLDER CUP

0

RM15WTRZA-2S(72)

RM15WTRZA-2S(72)

Hirose

CONN RCPT FMALE 2P GOLD SLDR CUP

0

H/MS3108B18-10S-D-T(31)

H/MS3108B18-10S-D-T(31)

Hirose

CONN PLUG FMALE 4POS SOLDER CUP

0

RM15WTPZA-3P(72)

RM15WTPZA-3P(72)

Hirose

CONN PLUG MALE 3P GOLD SLDR CUP

0

HR10A-10TR-12SB(74)

HR10A-10TR-12SB(74)

Hirose

CONN RCPT FMALE 12POS GOLD SLDR

0

JRC16BR-10PA

JRC16BR-10PA

Hirose

CONN RCPT MALE 10POS SOLDER

0

RM15WTPZA-4S(82)

RM15WTPZA-4S(82)

Hirose

CONN PLUG FMALE 4POS SOLDER CUP

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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