Terminals - Ring Connectors

Part Number	Description / PDF	Quantity
R150-12 JST	CONN RING CRIMP 250/300 AWG #1/2	373
R200-12 JST	CONN RING CRIMP 400 AWG #1/2	8
R60-10 JST	CONN RING CRIMP 1/0 AWG #3/8	0
R60-8 JST	CONN RING CRIMP 1/0 AWG #5/16	0
R38-10 JST	CONN RING CRIMP 2 AWG #3/8	74
R2-5 JST	CONN RING CRIMP 14-16 AWG #11	2940
R8-5 JST	CONN RING CRIMP 8 AWG #10	0
R5.5-5 JST	CONN RING CIRC 10-12AWG #10	0
SRA-20T-3.2 JST	CONN RING CIRC 18-22AWG CRIMP	0
0.5-3 JST	RING TONGUE TERMINAL	0
1.25-MS3 JST	CONN RING CIRC 16-22AWG #3 CRIMP	0
L1.25-3 JST	RING TONGUE TERMINAL	0
14-10 JST	CONN RING D-SHAPE 6AWG #3/8	0
R8-8 JST	CONN RING FLAT 8AWG #5/16 CRIMP	0
3.5-R4 JST	CONN RING CRIMP 12-14 AWG #8	586
SRA-51T-4 JST	RING TONGUE TERMINAL	0
1.25-3 JST	CONN RING CIRC 16-22AWG #3 CRIMP	0
R22-10(NJ) JST	CONN RING FLAT 4AWG #3/8 CRIMP	442
FG5.5-4 JST	CONN RING CIRC 10-12AWG #8 CRIMP	0
N2-MS3 JST	CONN RING CIRC 14-16AWG #3 CRIMP	0

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)