Circular Connectors

Image Part Number Description / PDF Quantity Rfq
RM15TP-4PA(71)

RM15TP-4PA(71)

Hirose

CONN PLUG MALE 4P SILV SLDR CUP

0

HR10A-7TR-6SA(74)

HR10A-7TR-6SA(74)

Hirose

CONN RCPT FMALE 6POS GOLD SOLDER

0

JR21RK-10P

JR21RK-10P

Hirose

CONN RCPT MALE 10P SOLDER CUP

10

RM15TP-8S(71)

RM15TP-8S(71)

Hirose

CONN PLUG FMALE 8P SOLDER CUP

29

HR25-9TR-20SA(71)

HR25-9TR-20SA(71)

Hirose

CONN RCPT FMALE 20POS GOLD SLDR

484

RM15WTPZ-12S(72)

RM15WTPZ-12S(72)

Hirose

CONN PLUG FMALE 12P SOLDER CUP

14

RP13A-12RA-15PA(71)

RP13A-12RA-15PA(71)

Hirose

CONN RCPT MALE 15POS SILV SOLDER

62

HR25A-9P-20S

HR25A-9P-20S

Hirose

CONN PLUG FMALE 20P SOLDER CUP

0

LF13WBP-20P

LF13WBP-20P

Hirose

CONN PLUG MALE 20P GOLD SLDR CUP

482

HA16RM-3PE(76)

HA16RM-3PE(76)

Hirose

CONN RCPT MALE 3POS SILVER SLDR

0

HR10A-7R-4P(74)

HR10A-7R-4P(74)

Hirose

CONN RCPT MALE 4P GOLD SLDR CUP

220

RM12BPE-5S(71)

RM12BPE-5S(71)

Hirose

CONN PLUG FMALE 5P SOLDER CUP

37

HR25A-9J-12P

HR25A-9J-12P

Hirose

CONN JACK MALE 12P GOLD SLDR CUP

0

HA16RM-3P(76)

HA16RM-3P(76)

Hirose

CONN RCPT MALE 3P SILV SLDR CUP

0

LF13WBJ-11P

LF13WBJ-11P

Hirose

CONN JACK MALE 11P GOLD SLDR CUP

172

RM12BRD-4S(71)

RM12BRD-4S(71)

Hirose

CONN RCPT FMALE 4P SOLDER CUP

464

RM15QPS-10PH(71)

RM15QPS-10PH(71)

Hirose

CONN PLUG MALE 10P SOLDER CUP

47

HR34B-12WLPD-4S

HR34B-12WLPD-4S

Hirose

CONN PLUG FMALE 4P SOLDER CUP

25

HR10A-7J-4P(74)

HR10A-7J-4P(74)

Hirose

CONN JACK MALE 4P GOLD SLDR CUP

0

HR10-7P-6S(73)

HR10-7P-6S(73)

Hirose

CONN PLUG FMALE 6P GOLD SLDR CUP

180

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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