Circular Connectors

Image Part Number Description / PDF Quantity Rfq
SR30-10R-6S(71)

SR30-10R-6S(71)

Hirose

CONN RCPT FMALE 6P GOLD SLDR CUP

556

HR34B-12WRB-4P-X

HR34B-12WRB-4P-X

Hirose

CONN RCPT MALE 4P SILV SLDR CUP

0

RPC1-12RB-6P(71)

RPC1-12RB-6P(71)

Hirose

CONN RCPT MALE 6P SILV SLDR CUP

1999

RM15WTRZB-2P(71)

RM15WTRZB-2P(71)

Hirose

CONN RCPT MALE 2P SILV SLDR CUP

0

RM15WTRZ-4P(71)

RM15WTRZ-4P(71)

Hirose

CONN RCPT MALE 4P SILV SLDR CUP

0

HR10A-7R-6PB(73)

HR10A-7R-6PB(73)

Hirose

CONN RCPT MALE 6POS SILVER SLDR

824

HR12-10R-8SD(71)

HR12-10R-8SD(71)

Hirose

CONN RCPT FMALE 8POS TIN SOLDER

0

HR10A-7P-6P(74)

HR10A-7P-6P(74)

Hirose

CONN PLUG MALE 6P GOLD SLDR CUP

27

RM15WTPZ-3S(71)

RM15WTPZ-3S(71)

Hirose

CONN PLUG FMALE 3P SOLDER CUP

49

HR10G-7R-4P(73)

HR10G-7R-4P(73)

Hirose

CONN RCPT MALE 4P SILV SLDR CUP

0

RM15TRH-2SA(71)

RM15TRH-2SA(71)

Hirose

CONN RCPT FMALE 2P SOLDER CUP

136

RM15TRH-8PH(71)

RM15TRH-8PH(71)

Hirose

CONN RCPT MALE 8P SILV SLDR CUP

41

JR21RK-10S

JR21RK-10S

Hirose

CONN RCPT FMALE 10P SOLDER CUP

12

RM15WTRZA-12S(71)

RM15WTRZA-12S(71)

Hirose

CONN RCPT FMALE 12P SOLDER CUP

33

HA16-5P(PM)(76)

HA16-5P(PM)(76)

Hirose

CONN MALE INSERT 5P SOLDER CUP

1

HR10A-10R-12SB(72)

HR10A-10R-12SB(72)

Hirose

CONN RCPT FMALE 12POS GOLD SLDR

30

RM15TRD-10S(71)

RM15TRD-10S(71)

Hirose

CONN RCPT FMALE 10P SOLDER CUP

243

HR12-10R-5SDL(71)

HR12-10R-5SDL(71)

Hirose

CONN RCPT FMALE 5POS TIN SOLDER

0

HR25-7TJ-6P(72)

HR25-7TJ-6P(72)

Hirose

CONN JACK MALE 6P GOLD SLDR CUP

0

HR25A-9R-12S

HR25A-9R-12S

Hirose

CONN RCPT FMALE 12P SOLDER CUP

86

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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