Terminal Blocks - Headers, Plugs and Sockets

Part Number	Description / PDF	Quantity
1630810000 Weidmuller	TERM BLOCK HDR 12POS VERT 5.08MM	0
1000220001 Weidmuller	TERM BLOCK PLUG 2POS 5.08MM	195
1983080000 Weidmuller	TERM BLOCK PLUG 2POS 5.08MM	27090
1711980000 Weidmuller	TERM BLOCK PLUG 4POS STR 5.08MM	0
1841690000 Weidmuller	TERM BLOCK HDR 8POS 90DEG 3.5MM	0
1945140000 Weidmuller	TERM BLOCK PLUG 10POS STR 5.08MM	6090
1948380000 Weidmuller	TERM BLOCK PLUG 16POS 5.08MM	10198
1001590000 Weidmuller	TERM BLOCK PLUG 8POS 5.08MM	34
1945100000 Weidmuller	TERM BLOCK PLUG 6POS STR 5.08MM	90
1943670000 Weidmuller	TERM BLOCK PLUG 11POS STR 5.08MM	1201530
1648970000 Weidmuller	TERM BLOCK HDR 20POS VERT 5.08MM	80
1357840000 Weidmuller	TERM BLOCK HDR 24POS 90DEG 3.5MM	0
1943180000 Weidmuller	TERM BLOCK HDR 2POS VERT 3.81MM	3
1614270000 Weidmuller	TERM BLOCK HDR 8POS VERT 3.5MM	9050
1581860000 Weidmuller	TERM BLOCK HDR 10POS VERT 5MM	0
1798920000 Weidmuller	TERM BLOCK PLUG 12POS 3.81MM	0
1001610000 Weidmuller	TERM BLOCK PLUG 10POS 5.08MM	68
1581320000 Weidmuller	TERM BLOCK HDR 2POS VERT 5MM	884
1289480000 Weidmuller	TERM BLOCK HDR 10POS 90DEG 3.5MM	91432
1838070000 Weidmuller	TERM BLOCK HDR 11POS VERT 5.08MM	119

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