Circular Connectors

Part Number	Description / PDF	Quantity
AE284T18B28PA PEI-Genesis	CONN PLUG MALE 28POS GOLD CRIMP	25
AE320FJ8AN PEI-Genesis	CONN RCPT MALE 8POS CRIMP	0
M83723/77R1610N Amphenol Aerospace Operations	CONN PLUG FMALE 10POS GOLD CRIMP	0
PWF-03BFFA-SL7001 LTW (Amphenol LTW)	CONN PLUG FMALE 3P GOLD SLDR CUP	820
MS3450KT22-2SZ PEI-Genesis	CONN RCPT FMALE 3POS GOLD CRIMP	0
RM12BPE-4PH(71) Hirose	CONN PLUG MALE 4P SILV SLDR CUP	121
1027669 Phoenix Contact	CONN RCPT FMALE 5POS GOLD SOLDER	26
PT02SE-16-8P(025) Amphenol Industrial	CONN RCPT MALE 8POS GOLD CRIMP	129
D38999/24ZJ37PN Amphenol Aerospace Operations	CONN RCPT MALE 37POS GOLD CRIMP	0
AE554L12S-3PY PEI-Genesis	CONN RCPT MALE 2POS GOLD CRIMP	13
PD3FRA2 Switchcraft / Conxall	CONN PLUG FMALE XLR 3P TIN SLDR	180
TA6MLX Switchcraft / Conxall	CONN RCPT MALE MINI XLR 6P SLDR	71
PT00E-10-6S(SR) Amphenol Industrial	CONN RCPT FMALE 6P GOLD SLDR CUP	27
22003615-01 Chogori Technologies	CONN RCPT FMALE 3POS SOLDER CUP	72
UTS710D98S Souriau-Sunbank by Eaton	CONN RCPT FMALE 6POS GOLD SOLDER	0
PXMBNI12FLM17AFLFFL001 Bulgin	CONN RCPT MALE 17P WIRE LEAD	50
MS3456W36-10SZ PEI-Genesis	CONN PLUG FMALE 48POS CRIMP	24
AE774W20-39SW PEI-Genesis	CONN RCPT FMALE 39POS CRIMP	138
PFG.2B.318.CYMD92 REDEL / LEMO	CONN RCPT FMALE 18POS GOLD CRIMP	0
W6282-5PG-P-3DC Switchcraft / Conxall	CONN PLUG MALE 5POS SOLDER CUP	20

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

Type	Functional Characteristics	Application Examples
MIL-DTL-38999	High-density, threaded coupling, EMI shielding	Aerospace systems, military vehicles
USB Type-C	Reversible design, 10Gbps data rate, 100W power delivery	Smartphones, laptops, PDAs
BNC	Bayonet locking, 2GHz frequency range	Test equipment, video systems
LVDT Circular	Linear variable differential transformer integration	Industrial 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

Parameter	Typical Range	Importance
Voltage Rating	50V-600V	Determines power transmission capacity
Current Rating	1A-25A/contact	Affects thermal performance
Contact Resistance	5m	Impacts signal integrity
IP Rating	IP40-IP68	Defines environmental protection level
Operating Temp	-65 C to +200 C	Material stability indicator
Mating Cycles	500-10,000	Service 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

Manufacturer	Key Products	Special Features
Amphenol	MIL-DTL-38999 series	Composite materials, EMI filtering
TE Connectivity	DEUTSCH D38999	Thermoplastic housing, 2000V dielectric
Molex	USB Type-C 10Gbps	Shielded twinax design
Delphi	Automotive circular connectors	IP69K rating for EV charging
Lemo	Push-pull circular series	Subminiature, 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