Terminal Junction Systems

Part Number	Description / PDF	Quantity
CTJ-3D-02 TE Connectivity DEUTSCH Connectors	RAIL ASSY	48
TJSE20705 Socapex (Amphenol Pcd)	CONN WIRE SPLICE DIODE SZ20 2"L	34
LMD-4122-96LD Amphenol Aerospace Operations	CONN CONTACT SZ22 0.863" L	3
TJE120810 Socapex (Amphenol Pcd)	CONN DIODE MOD SZ16/20 0.850" L	52
M81714/63-20S TE Connectivity DEUTSCH Connectors	CONN GRND BLOCK SZ20	42
CTD126E01A-513 TE Connectivity DEUTSCH Connectors	MODULE ASSY	23
LMD-3001-P Amphenol Aerospace Operations	CONN FEEDBACK MOD SZ20 0.500"L	55
CTJ720K01B-7067 TE Connectivity DEUTSCH Connectors	MODULE ASSY	31
LMD-4116-96LD Amphenol Aerospace Operations	CONN CONTACT SZ16 0.821" L	0
LMD-5001-P Amphenol Aerospace Operations	CONN RELAY MOD 1.326" L	14
LMD-3005-S Amphenol Aerospace Operations	CONN FEEDBACK MOD SZ16 0.500"L	73
591841-1 TE Connectivity Aerospace Defense and Marine	CONN WIRE SPLICE DIODE SZ20	0
CTJ122E02D-513 [V003] TE Connectivity DEUTSCH Connectors	ELEC MODULE	0
TJSE22707 Socapex (Amphenol Pcd)	CONN WIRE SPLICE DIODE SZ22	25
CTJ-3D-03-4021 TE Connectivity DEUTSCH Connectors	RAIL ASSY	0
TJM220706 Socapex (Amphenol Pcd)	CONN FEEDTHRU MOD SZ20 0.850" L	0
YDCR-1A-1500000000 TE Connectivity DEUTSCH Connectors	COMPOSIT RAIL	0
TJM216701 Socapex (Amphenol Pcd)	CONN FEEDTHRU MOD SZ16 1.170" L	0
SJE020057 Socapex (Amphenol Pcd)	CONN MOD SZ20 1.020" W X 1.17" H	0
YCTJ-3D-10C0560000 TE Connectivity DEUTSCH Connectors	RAIL ASSY	0

Terminal Junction Systems

1. Overview

Connectors, interconnects, and terminal junction systems are critical components in electrical and electronic systems, enabling reliable signal and power transmission between devices. These components provide removable or permanent electrical connections while maintaining circuit integrity. Their importance has grown exponentially with advancements in electronics miniaturization, high-speed data transmission, and industrial automation requirements.

2. Main Types and Functional Classification

Type	Functional Characteristics	Application Examples
Board-to-Board Connectors	Stacking PCBs without cables	Smartphones, industrial control panels
Wire-to-Wire Connectors	Connecting discrete cables	Automotive wiring harnesses
I/O Connectors	External device interfacing	USB, HDMI ports
Terminal Blocks	Connecting multiple wires permanently	Industrial machinery control cabinets
High-Speed Backplanes	Multi-gigabit parallel data transmission	Telecom switches, servers

3. Structure and Components

Typical construction includes:

Contact elements: Conductive paths made from phosphor bronze or beryllium copper
Insulation housing: Thermoplastic materials (e.g., PBT, LCP) with flame-retardant properties
Termination system: Crimping, soldering, or insulation displacement contacts (IDC)
Environmental seals: Elastomer gaskets for IP protection
Actuation mechanisms: Latching systems for secure mating

4. Key Technical Specifications

Parameter	Importance	Typical Range
Current Rating	Determines power handling capacity	0.1A - 1000A
Contact Resistance	Affects signal integrity	1m - 30m
Dielectric Withstanding Voltage	Safety insulation level	500V - 5kV
Insertion Force	Usability consideration	0.5N - 20N
Operating Temperature	Environmental reliability	-65 C to +200 C

5. Application Areas

Major industries include:

Consumer Electronics: Wearables, mobile devices
Automotive: EV battery systems, ADAS sensors
Industrial Automation: PLC systems, robotics
Telecommunications: 5G base stations, fiber optics
Aerospace: Avionics, satellite systems
Medical: Diagnostic equipment, implantable devices

6. Leading Manufacturers and Products

Manufacturer	Key Products
TE Connectivity	MICRO5 USB connectors, DEUTSCH DRC connectors
Amphenol	Orccon industrial terminal blocks, TNC series RF connectors
Molex	PicoBlade headers, MX150 automotive connectors
Phoenix Contact	COMBICON modular terminal blocks, PROtop series
Samtec	SEARAY high-speed arrays, micro pitch connectors

7. Selection Guidelines

Consider:

Electrical requirements: Voltage/current specifications
Mechanical constraints: Space limitations and mating cycles
Environmental conditions: Temperature, vibration, EMI shielding
Cost vs. reliability: Military-grade vs. commercial-grade components
Industry standards: Compliance with IPC, IEC, or MIL specifications

Case Study: In industrial automation, Phoenix Contact's CLIPLINE terminal blocks were selected for their vibration-resistant spring-cage termination in conveyor control systems.

8. Industry Trends

Emerging developments:

Miniaturization: Sub-1.0mm pitch connectors for wearable devices
High-speed transmission: 112Gbps differential pairs for 5G infrastructure
Hybrid connectors: Integrated power/data transmission (e.g., USB4 Power Delivery)
Sustainable materials: Bio-based polymers and lead-free plating
Smart connectivity: Embedded sensors for condition monitoring