Circular Connectors

Circular Connectors - Housings

Image	Part Number	Description / PDF	Quantity	Rfq
	HR25-9TR-16PC Hirose	CONN RCPT HSNG MALE 16POS PNL MT	0
	HR25-9J-12SC(72) Hirose	CONN JCK HSG FMALE 12POS INLINE	0
	HR30-7R-12PC(71) Hirose	CONN RCPT HSNG MALE 12POS PNL MT	0
	HR10A-13R-20PC Hirose	CONN RCPT HSNG MALE 20POS PNL MT	0
	HR212-10LP-5PC(71) Hirose	CONN PLG HSG MALE 5POS INLINE RA	0
	RP13A-12PG-20SC Hirose	CONN PLG HSG FMALE 20POS INLINE	0
	HR10A-10R-10SC Hirose	CONN RCPT HSG FMALE 10POS PNL MT	0
	HR10A-10J-10PC Hirose	CONN JACK HSG MALE 10POS INLINE	0
	HR25-9TP-12PC Hirose	CONN PLUG HSG MALE 12POS INLINE	0
	HR10A-10TP-12PC Hirose	CONN PLUG HSG MALE 12POS INLINE	0
	HR10A-7J-4SC Hirose	CONN JACK HSG FMALE 4POS INLINE	0
	JR21WR-16PC(71) Hirose	CONN RCPT HSNG MALE 16POS PNL MT	0
	JR21WP-10SC(71) Hirose	CONN PLG HSG FMALE 10POS INLINE	0
	JR21WP-10PC(71) Hirose	CONN PLUG HSG MALE 10POS INLINE	0
	RP13A-12PS-20SC Hirose	CONN PLG HSG FMALE 20POS INLINE	0
	JR25WR-24PC(71) Hirose	CONN RCPT HSNG MALE 24POS PNL MT	0
	JR21WR-16SC(71) Hirose	CONN RCPT HSG FMALE 16POS PNL MT	0
	HR30-7R-12PC Hirose	CONN RCPT HSNG MALE 12POS PNL MT	0
	JR21WP-16PC(71) Hirose	CONN PLUG HSG MALE 16POS INLINE	0
	JR16WRA-3PC(71) Hirose	CONN RCPT HSNG MALE 3POS PNL MNT	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