Terminal Blocks - Headers, Plugs and Sockets

Part Number	Description / PDF	Quantity
TS07715A0000G Anytek (Amphenol Anytek)	TERM BLOCK PLUG 7POS 90DEG 5MM	0
1827240 Phoenix Contact	TERM BLOCK PLUG 14POS 3.81MM	39
1716989 Phoenix Contact	TERM BLOCK PLUG HYBRID 4+6POS	25
0395200007 Woodhead - Molex	TERM BLOCK PLUG 7POS STR 5MM	544
1857922 Phoenix Contact	TERM BLOCK PLUG 6POS STR 3.81MM	300
1612160000 Weidmuller	TERM BLOCK PLUG 9POS STR 7MM	110
XW4K-02A1-H1 Omron Electronics Components	TERM BLOCK HDR 2POS 90DEG 2.54MM	487
1-284514-2 TE Connectivity AMP Connectors	TERM BLOCK HDR 12POS VERT 3.5MM	1750
691701550003B Würth Elektronik Midcom	5.08 MM TERMINAL BLOCK HEADER, H	500
1-1986692-4 TE Connectivity AMP Connectors	TERM BLOCK PLUG 14POS STR 3.5MM	0
0395005003 Woodhead - Molex	TERM BLOCK PLUG 3POS STR 3.5MM	555
1742855 Phoenix Contact	TERM BLOCK HDR 2POS VERT 5MM	0
1-282832-0 TE Connectivity AMP Connectors	TERM BLOCK HDR 10POS VERT 5MM	0
1777138 Phoenix Contact	TERM BLOCK HDR 8POS VERT 5.08MM	158
1903067 Phoenix Contact	TERM BLOCK PLUG 2POS 3.81MM	0
1758021 Phoenix Contact	TERM BLOCK HDR 3POS VERT 5.08MM	37629500
1847796 Phoenix Contact	TERM BLOCK HDR 16POS VERT 3.81MM	0
2342083-6 TE Connectivity AMP Connectors	6POS HDR 90 DEG HT 5.08MM PITCH	400
EDSTL130/15 On-Shore Technology, Inc.	TERM BLOCK HDR 15POS VERT 5MM	0
TBP01R1W-508-16BE CUI Devices	TERMINAL BLOCK, PLUGGABLE, W SCR	350

Terminal Blocks - Headers, Plugs and Sockets

1. Overview

Terminal blocks, headers, plugs, and sockets are essential components in electrical and electronic systems for establishing reliable connections between circuits. These devices enable signal transmission, power distribution, and system modularity. Their standardized designs ensure interoperability, scalability, and ease of maintenance in complex systems.

2. Main Types and Functional Classification

Type	Functional Characteristics	Application Examples
Terminal Blocks	Screw/clamp-based connections for high current/ voltage	Industrial control panels, power distribution units
PCB Headers	Pin/grid arrays for board-to-board connections	Embedded systems, Arduino shields
RJ Connectors	Modular jacks for data/telecom signals	Ethernet networks (RJ45), telephone systems (RJ11)
D-Sub Connectors	Multi-pin trapezoidal shells for analog/digital signals	Legacy serial interfaces, industrial sensors
USB Connectors	Hot-pluggable interfaces for power/data	Consumer electronics, peripheral devices

3. Structure and Components

Typical structures include:

Insulating housing (PA66, PBT, or LCP plastics)
Contact elements (phosphor bronze, beryllium copper)
Plating materials (gold, tin, nickel for corrosion resistance)
Actuation mechanisms (screws, spring clamps, or friction fits)
EMI shielding layers (for high-frequency applications)

4. Key Technical Specifications

Parameter	Importance
Current Rating (A)	Determines power handling capacity
Voltage Rating (V)	Defines dielectric strength requirements
Contact Resistance (m )	Impacts signal integrity and power loss
Insertion Loss (dB)	Critical for high-speed data transmission
Mating Cycles	Indicates mechanical durability
Operating Temperature (- C to + C)	Defines environmental tolerance

5. Application Fields

Primary industries include:

Industrial automation (PLCs, HMIs)
Telecommunications (5G base stations, routers)
Consumer electronics (smartphones, wearables)
Medical equipment (imaging devices, patient monitors)
Automotive (EV charging systems, ADAS)

6. Leading Manufacturers and Products

Manufacturer	Representative Product
Phoenix Contact	COMBICON series terminal blocks
TE Connectivity	MICRO MATCH connectors
Molex	SL Series headers
Amphenol	D-Subminiature connectors
Samtec	QTE high-speed socket systems

7. Selection Guidelines

Key considerations:

Electrical requirements (current/voltage levels)
Mechanical constraints (space, vibration)
Environmental factors (temperature, humidity)
Signal integrity needs (frequency, noise rejection)
Cost vs. reliability trade-offs
Compliance with standards (IPC, IEC, UL)

8. Industry Trends

Emerging developments include:

Miniaturization for wearable devices
High-speed connectors for 5G/6G ( 25 Gbps)
Hybrid connectors integrating power/data
Eco-friendly materials (halogen-free, RoHS compliant)
Smart connectors with built-in sensors
Automotive-grade connectors for EVs