Circular Connectors

Circular Connectors - Housings

Part Number	Description / PDF	Quantity
97-4102A-18-4S Amphenol Industrial	CONN RCPT HSNG FMALE 4POS PNL MT	46
MS3122E14-19P(LC) Amphenol Industrial	RECEPT	0
MS3126E12-8S(LC) Amphenol Industrial	PLUG	0
MS3122E16-8S(LC) Amphenol Industrial	RECEPT	0
CS3108A18-1S(116) Amphenol Industrial	CONN PLG HSG FMAL 10PS INLINE RA	0
ACC05E-32-25SW(003)LC Amphenol Industrial	CONN PLG HSG FMALE 25POS INLINE	0
MS3120F14-15PLC Amphenol Industrial	CONN RCPT HSNG MALE 15POS PNL MT	16
MS3121E22-41P(LC) Amphenol Industrial	RECEPT	0
MS3126F20-39PLC Amphenol Industrial	CONN PLUG HSG MALE 39POS INLINE	8
MS3126E24-61PLC Amphenol Industrial	CONN PLUG HSG MALE 61POS INLINE	1
MS3127E22-55PLC Amphenol Industrial	CONN RCPT HSNG MALE 55POS PNL MT	1
PT02SE22-55SX-LC Amphenol Industrial	CONN RCPT HSG FMALE 55POS PNL MT	34
AIB30US20-4S0 Amphenol Industrial	GT 4C 4#12 PIN RECP WALL	0
AIB6CGMSS1-18-3S0-027 Amphenol Industrial	GT 2C 2#12 SKT PLUG	0
PT02SE-12-3SLC Amphenol Industrial	CONN RCPT HSNG FMALE 3POS PNL MT	85
MS3122E14-19PLC Amphenol Industrial	CONN RCPT HSNG MALE 19POS PNL MT	0
MS3120F12-10S(LC) Amphenol Industrial	RECEPT	0
MS3122E22-55PLC Amphenol Industrial	CONN RCPT HSNG MALE 55POS PNL MT	2
MS3126F12-10PLC Amphenol Industrial	CONN PLUG HSG MALE 10POS INLINE	46
MS3120F22-41SLC Amphenol Industrial	CONN RCPT HSG FMALE 41POS PNL MT	0

Circular Connectors - Housings

1. Overview

Circular connectors housings are electromechanical devices designed to protect and organize electrical contacts in circular configurations. They serve as mechanical support structures while providing environmental protection, electrical insulation, and strain relief. These housings are critical components in maintaining signal integrity and power transmission across diverse applications, from industrial automation to aerospace systems.

2. Main Types and Functional Classification

Type	Functional Features	Application Examples
Metal Housings	High durability, EMI/RFI shielding, vibration resistance	Military equipment, aerospace systems
Plastic Housings	Lightweight, corrosion-resistant, cost-effective	Consumer electronics, medical devices
Hybrid Housings	Combination of metal/plastic for optimized performance	Automotive sensors, industrial machinery
High-Density Housings	Miniaturized contact arrangements with advanced insulation	Telecom equipment, data centers

3. Structure and Components

Typical circular connector housings consist of: - Shell Body: Cylindrical main structure (metal/plastic) with mounting threads - Contact Cavities: Precision-machined compartments for terminal placement - Sealing System: Integrated gaskets/O-rings for IP65+ protection - Polarization Key: Mechanical feature preventing misalignment - Retention System: Threaded coupling or bayonet mechanisms - Cable Entry: Strain relief provisions with gland seals

4. Key Technical Specifications

Parameter	Importance
Current Rating (A)	Determines power transmission capacity
Voltage Withstand (V)	Ensures dielectric strength
Operating Temperature (-40 C to +125 C)	Defines environmental tolerance
Vibration Resistance (10-2000Hz)	Crucial for harsh environments
IP Rating (IP67/IP68)	Specifies ingress protection level
Contact Retention Force	Prevents accidental disconnection

5. Application Fields

Industrial Automation: Robotics, PLC systems
Medical Equipment: MRI machines, patient monitoring systems
Aerospace: Avionics, flight control systems
Telecommunications: 5G base stations, fiber optic equipment
Energy: Wind turbines, solar inverters

6. Leading Manufacturers and Products

Manufacturer	Representative Product
TE Connectivity	DEUTSCH DT series metal housings
Amphenol	Hermetic circular connector enclosures
Molex	T1 Mini sealed automotive housings
Phoenix Contact	Heavy-duty QUICKON connectors

7. Selection Guidelines

Key considerations include: - Environmental factors (temperature, moisture, chemicals) - Mechanical requirements (vibration, shock, mating cycles) - Electrical parameters (current/voltage requirements) - Material compatibility (corrosion resistance needs) - Space constraints and mounting options - Cost vs. performance trade-offs Example: For underwater robotics applications, prioritize IP68-rated plastic housings with corrosion-resistant coatings and pressure sealing.

8. Industry Trends

Current development trends include: - Miniaturization for IoT device integration - Advanced polymer composites for weight reduction - Integrated smart sensors in connector housings - Enhanced EMI shielding for 5G applications - Sustainability focus on recyclable materials - Additive manufacturing enabling complex geometries