Modular Connectors

Modular Connectors - Plugs

Part Number	Description / PDF	Quantity
SS-39200-064 Stewart Connector	CAT6A SHIELDED LARGE OD PLUG	8433
937-SP-3044 Stewart Connector	CONN MOD PLUG 4P4C UNSHIELDED	15328
937-SP-360606-A151 Stewart Connector	CONN MOD PLUG 6P6C SHIELDED	244
SS-39300-009 Stewart Connector	MOD PLUG PUNCH DWN CAT8.1 GRY	0
943-SP-370808M2-A285 Stewart Connector	CONN MOD PLUG 8P8C UNSHIELDED	223
SS-39200-044 Stewart Connector	CAT6 SHIELDED SMALL OD PLUG	651
SS-310808-5 Stewart Connector	CONN MOD PLUG 8P8C SHIELDED	85
SS-310606-5 Stewart Connector	CONN MOD PLUG 6P6C SHIELDED	382
SS-310606-3 Stewart Connector	CONN MOD PLUG 6P6C SHIELDED	0
SS-39500-006 Stewart Connector	CONN MOD QWIK PLUG KIT PK 100	7
937-SP-3088 Stewart Connector	CONN MOD PLUG 8P8C UNSHIELDED	205
SS-39200-014 Stewart Connector	CONN MOD PLUG 8P8C SHIELDED	905
SS-39300-013 Stewart Connector	MODULAR RJ45 PLUG CAT5E UTP IDC	280
940-SP-3066R Stewart Connector	CONN MOD PLUG 6P6C UNSHIELDED	48974
937-SP-360808-A108 Stewart Connector	CONN MOD PLUG 8P8C SHIELDED	849
943-SP-370808SM2 Stewart Connector	CONN MOD PLUG 8P8C SHIELDED	776
SS-39200-079 Stewart Connector	CONN MOD PLUG CAT6A 8P8C SHLD	238
940-SP-360808-A161 Stewart Connector	CONN MOD PLUG 8P8C SHIELDED	976
940-SP-3044R Stewart Connector	CONN MOD PLUG 4P4C UNSHIELDED	16819
940-SP-361010-A108 Stewart Connector	CONN MOD PLUG 10P10C SHIELDED	830

Modular Connectors - Plugs

1. Overview

Modular connectors-plugs are standardized electro-mechanical interfaces enabling rapid connection/disconnection of electronic devices. Defined by international standards (IEC 60603, TIA/EIA-568), these components form the backbone of modern communication infrastructure. Their hot-swappable design ensures system flexibility while maintaining signal integrity in applications ranging from telecommunication to industrial automation.

2. Main Types & Functional Classification

Type	Functionality	Applications
RJ11	6-position 2-conductor	Traditional telephone systems
RJ45	8-position 8-conductor (Cat6/8)	Ethernet networks (10/100/1000 Mbps)
USB Type-A	Rectangular 24-pin	Host/device connectivity (USB 3.2 Gen2)
USB Type-C	Oval 24-pin reversible	Power Delivery (100W), Thunderbolt 4
HDMI Type-A	19-pin digital video/audio	4K/8K display interfaces

3. Structure & Composition

Typical modular plugs feature:

Contact points: Phosphor bronze with gold plating (30-50 m)
Insulation: High-temperature thermoplastics (LCP/PBT)
Shell: Zinc alloy or reinforced polymer
Retention mechanism: Spring-loaded latches (3.5N typical force)

Advanced designs incorporate EMI shielding (Mu-metal) and strain relief boots for 5000+ mating cycles.

4. Key Technical Specifications

Parameter	Value Range	Critical Importance
Rated Voltage	50-600V AC	Electrical safety compliance
Contact Resistance	5-20m	Signal integrity maintenance
Insulation Resistance	100M -10G	Prevent current leakage
Operating Temp	-55 C to +125 C	Environmental reliability
Mating Cycles	1,500-10,000	Product longevity

5. Application Fields

Primary industries include:

Telecommunications: 5G base stations, VoIP systems
Consumer Electronics: Smartphones, VR headsets
Industrial Automation: PLC interfaces, sensor networks
Medical Equipment: MRI scanners, patient monitors
Automotive: Onboard diagnostics (OBD-II), infotainment

Typical devices: Network switches, PoE-powered devices, USB-C docking stations.

6. Leading Manufacturers & Products

Manufacturer	Product Example	Key Features
TE Connectivity	DB115X Series	10G Ethernet, PoE++ support
Amphenol	USB6781-C	USB4 Gen3, 40Gbps data rate
Molex	705456 Series	Automotive-grade HDMI (Type-E)
Samtec	ZSE2-10-S-8C	High-speed RJ45 with integrated magnetics

7. Selection Guidelines

Key selection criteria:

Match interface standard to protocol requirements (e.g., USB4 vs. Thunderbolt 4)
Evaluate current carrying capacity (1.5A-5A per pin)
Environmental compliance (IP67, RoHS)
Termination type (PCB mount vs. cable)
EMI/RFI shielding effectiveness
Cost vs. longevity trade-offs

Case study: Selecting USB Type-C over Micro USB for new IoT devices due to 10x durability rating and reversible design.

8. Industry Trends

Emerging developments:

Optical modular connectors for 400Gbps+ data rates
Hybrid connectors integrating power/data transmission
Nanocoatings for IP68-rated industrial connectors
Smart connectors with embedded ID chips (USB-IF Authentication)
Recyclable polymer composites for eco-friendly designs