Terminals - Ring Connectors

Part Number	Description / PDF	Quantity
0190730049 Woodhead - Molex	CONN RING CIRC 18-22AWG #10	853
0191930303 Woodhead - Molex	CONN RING CIRC 2AWG #10 CRIMP	381
0191930174 Woodhead - Molex	CONN RING CIRC 8AWG #5/16 CRIMP	265
0190710283 Woodhead - Molex	CONN RING CIRC 2AWG #3/8 CRIMP	290
0191930155 Woodhead - Molex	CONN RING CIRC 8AWG #1/4 CRIMP	1343
0192210244 Woodhead - Molex	CONN RING FLAT 2/0AWG #3/8 CRIMP	1870
0190730032 Woodhead - Molex	CONN RING CIRC 18-22AWG #3/8	122
0191930375 Woodhead - Molex	CONN RING FLAT 4/0AWG #3/8 CRIMP	17
0192030490 Woodhead - Molex	CONN RING CIRC 14-16AWG #1/4	108135000
0191640027 Woodhead - Molex	CONN RING CIRC 14-16AWG #5/16	853
0192030376 Woodhead - Molex	CONN RING CIRC 8AWG #1/4 CRIMP	39
0192030113 Woodhead - Molex	CONN RING CIRC 10-12AWG #10	4178
0191640061 Woodhead - Molex	CONN RING CIRC 10-12AWG #6 CRIMP	1254
0191930273 Woodhead - Molex	CONN RING CIRC 4AWG #10 CRIMP	350
0191640038 Woodhead - Molex	CONN RING CIRC 14-16AWG #10	2222
0191930082 Woodhead - Molex	CONN RING CIRC 14-16AWG #10	200
0190770006 Woodhead - Molex	CONN RING CIRC 18-22AWG #8 CRIMP	0
0190540081 Woodhead - Molex	CONN RING CIRC 14-16AWG #6 CRIMP	8971
0190730086 Woodhead - Molex	CONN RING CIRC 14-16AWG #8 CRIMP	3728
0192210229 Woodhead - Molex	CONN RING FLAT 6AWG #3/8 CRIMP	613

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)