Terminals - Ring Connectors

Part Number	Description / PDF	Quantity
0190440140 Woodhead - Molex	CONN RING CIRC 14-16AWG #3/8	381
0190440064 Woodhead - Molex	CONN RING CIRC 18-22AWG #4 CRIMP	5446
0190540052 Woodhead - Molex	CONN RING CIRC 18-22AWG #6 CRIMP	3051
0190670114 Woodhead - Molex	CONN RING FLAT 2/0AWG #1/2 CRIMP	0
0190700009 Woodhead - Molex	CONN RING CIRC 18-22AWG #6 CRIMP	9231
0190670111 Woodhead - Molex	CONN RING FLAT 2/0AWG #3/8 CRIMP	1300
0190750015 Woodhead - Molex	CONN RING CIRC 14-16AWG #8 CRIMP	39084000
0190700144 Woodhead - Molex	CONN RING CIRC 10-12AWG #6 CRIMP	35
0190730087 Woodhead - Molex	CONN RING CIRC 14-16AWG #10	3478
0192210247 Woodhead - Molex	CONN RING FLAT 3/0AWG #3/8 CRIMP	467
0192210769 Woodhead - Molex	CONN RING FLAT 4/0AWG #1/2 CRIMP	0
0190690031 Woodhead - Molex	CONN RING CIRC 18-22AWG #6 CRIMP	7894
0191930377 Woodhead - Molex	CONN RING FLAT 4/0AWG #5/8 CRIMP	118
0190700133 Woodhead - Molex	CONN RING CIRC 10-12AWG #1/4	165
0191640309 Woodhead - Molex	CONN RING CIRC 14-16AWG #5/16	812
0190690241 Woodhead - Molex	CONN RING CIRC 10-12AWG #3/8	1338
0191930218 Woodhead - Molex	CONN RING FLAT 6AWG #3/8 CRIMP	2145
0192210380 Woodhead - Molex	CONN RING FLAT 2AWG #3/8 CRIMP	310
0190730011 Woodhead - Molex	CONN RING CIRC 18-22AWG #6 CRIMP	1239
0190730234 Woodhead - Molex	CONN RING CIRC 10-12AWG #1/4	3985

Terminals - Ring Connectors

1. Overview

Ring connectors are cylindrical metallic terminals with a closed loop at one end, designed to establish secure electrical connections between wires and screw-type terminals. They prevent wire fraying and ensure stable contact in high-vibration environments. Critical for power transmission and signal integrity in industrial and automotive systems.

2. Main Types & Functional Classification

Type	Functional Features	Application Examples
Open Barrel Ring	Split design for easy wire insertion	Battery terminals, control panels
Closed Barrel Ring	360 compression for maximum conductivity	High-vibration machinery
Insulated Ring	Polymer coating for short-circuit prevention	Automotive electronics

3. Structure & Composition

Typical construction includes:

Copper alloy body (C11000/C14500) with tin/nickel plating
Insulation sleeve (PVC/nylon, 105 C rating)
Barrel section with 2-3 crimping zones for wire retention
Loop diameter tolerance 0.1mm for screw compatibility

4. Key Technical Specifications

Parameter	Typical Range	Importance
Ampacity	10-150A	Current carrying capacity
Contact Resistance	0.5-5m	Power loss prevention
Dielectric Strength	1kV-5kV	Insulation reliability
Vibration Resistance	15G @ 10Hz-2kHz	Automotive compliance

5. Application Fields

Primary industries:

Automotive (battery cables, alternator connections)
Industrial automation (PLC terminals, motor drives)
Renewable energy (solar charge controllers)
Aerospace (avionics grounding systems)

6. Leading Manufacturers & Products

Manufacturer	Product Series	Key Features
TE Connectivity	DT Ring Terminals	Corrosion-resistant alloy, 125A rating
Phoenix Contact	RTME Series	Push-in wire connection, 600V compliance
Sumitomo Electric	HR4H-S-DC5V	Automotive-grade tin-plated copper

7. Selection Guidelines

Key considerations:

Current/voltage requirements
Wire gauge compatibility (AWG 22-4/0)
Environmental factors (temperature, humidity, vibration)
UL/CSA certification for safety compliance
Color-coded insulation for circuit identification

8. Industry Trends

Emerging developments include:

Miniaturization for EV battery management systems
Graphene-enhanced plating for corrosion resistance
Smart connectors with integrated current sensing
Lead-free manufacturing processes (RoHS compliance)