Terminals - Ring Connectors

Part Number	Description / PDF	Quantity
0190730099 Woodhead - Molex	CONN RING CIRC 14-16AWG #10	5450
0190700007 Woodhead - Molex	CONN RING CIRC 18-22AWG #4 CRIMP	11596
0190560025 Woodhead - Molex	CONN RING CIRC 18-22AWG #5/16	2194
0190730059 Woodhead - Molex	CONN RING CIRC 14-16AWG #3/8	100
0192210245 Woodhead - Molex	CONN RING FLAT 2/0AWG #1/2 CRIMP	401
0192210382 Woodhead - Molex	CONN RING FLAT 4/0AWG #3/8 CRIMP	83
0191930264 Woodhead - Molex	CONN RING CIRC 4AWG #3/8 CRIMP	327
0190700044 Woodhead - Molex	CONN RING CIRC 18-22AWG #8 CRIMP	0
0190560018 Woodhead - Molex	CONN RING CIRC 18-22AWG #10	0
0190690057 Woodhead - Molex	CONN RING CIRC 18-22AWG #8 CRIMP	2095
0190710139 Woodhead - Molex	CONN RING CIRC 8AWG #10 CRIMP	0
0190570009 Woodhead - Molex	CONN RING CIRC 18-22AWG #8 CRIMP	7399
0191640005 Woodhead - Molex	CONN RING CIRC 18-22AWG #3/8	727
0190710279 Woodhead - Molex	CONN RING CIRC 2AWG #10 CRIMP	368
0190760023 Woodhead - Molex	CONN RING CIRC #10 CRIMP	0
0191930267 Woodhead - Molex	CONN RING CIRC 4AWG #5/16 CRIMP	27126400
0190670018 Woodhead - Molex	CONN RING CIRC 8AWG #1/4 CRIMP	859
0191930141 Woodhead - Molex	CONN RING CIRC 10-12AWG #5/16	1748
0192030016 Woodhead - Molex	CONN RING CIRC 18-22AWG #10	9987
0191930137 Woodhead - Molex	CONN RING CIRC 10-12AWG #3/8	92

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)