Terminal Blocks - Headers, Plugs and Sockets

Part Number	Description / PDF	Quantity
1630730000 Weidmuller	TERM BLOCK HDR 4POS VERT 5.08MM	2354180
1792780000 Weidmuller	TERM BLOCK PLUG 3POS STR 3.81MM	0
1639320000 Weidmuller	TERM BLOCK PLUG 10POS 3.5MM	0
1798130000 Weidmuller	TERM BLOCK PLUG 8POS 3.81MM	0
1639240000 Weidmuller	TERM BLOCK PLUG 2POS 90DEG 3.5MM	0
1235790000 Weidmuller	TERM BLOCK PLUG 5POS STR 3.81MM	100
1779880000 Weidmuller	TERM BLOCK PLUG 10POS STR 3.5MM	220
1775062001 Weidmuller	TERM BLOCK HDR 8POS 90DEG 5.08MM	450
1173490000 Weidmuller	TERM BLOCK PLUG 2POS STR 7.62MM	130
1524310000 Weidmuller	TERM BLOCK HDR 4POS VERT 5.08MM	5635
1863020000 Weidmuller	TERM BLOCK HDR 6POS VERT 3.81MM	0
1002130000 Weidmuller	TERM BLOCK PLUG 6POS 5.08MM	81
1748310000 Weidmuller	TERM BLOCK PLUG 34POS STR 3.5MM	1332
1276590000 Weidmuller	CH20M22 S RPP BK	140
1793100000 Weidmuller	TERM BLOCK PLUG 10POS STR 3.81MM	50100
1748320000 Weidmuller	TERM BLOCK PLUG 36POS STR 3.5MM	18
1969180000 Weidmuller	TERM BLOCK PLUG 11POS STR 3.81MM	100
1134080000 Weidmuller	TERM BLOCK HDR 2POS VERT 7.62MM	191
1776382001 Weidmuller	TERM BLOCK HDR 4POS VERT 5.08MM	0
1155610000 Weidmuller	TERM BLOCK HDR 5POS 90DEG 5.08MM	1503450

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