Terminal Blocks - Headers, Plugs and Sockets

Part Number	Description / PDF	Quantity
1581330000 Weidmuller	TERM BLOCK HDR 3POS VERT 5MM	505
1629140000 Weidmuller	TERM BLOCK HDR 3POS VERT 7.5MM	0
1793530000 Weidmuller	TERM BLOCK HDR 3POS VERT 3.81MM	0
1775234001 Weidmuller	TERM BLOCK HDR 2POS 90DEG 5.08MM	526
1969990000 Weidmuller	TERM BLOCK PLUG 7POS STR 3.81MM	98
1793440000 Weidmuller	TERM BLOCK HDR 4POS 90DEG 3.81MM	184100
1748010000 Weidmuller	TERM BLOCK PLUG 6POS STR 3.5MM	600
1513460000 Weidmuller	TERM BLOCK HDR 10POS 5.08MM	29100
1728960000 Weidmuller	TERM BLOCK HDR 8POS VERT 3.5MM	58
1614180000 Weidmuller	TERM BLOCK HDR 8POS 90DEG 3.5MM	1659600
1838660000 Weidmuller	TERM BLOCK HDR 24POS VERT 5.08MM	52
1122700000 Weidmuller	TERM BLOCK PLUG 5POS STR 7.62MM	9448
1580890000 Weidmuller	TERM BLOCK HDR 5POS 90DEG 5MM	428
1060830000 Weidmuller	TERM BLOCK PLUG 2POS STR 7.62MM	100190
1780580000 Weidmuller	TERM BLOCK HDR 17POS 5.08MM	100
1335720000 Weidmuller	SLF 5.08HC/08/180F SN OR BX	0
1792770000 Weidmuller	TERM BLOCK PLUG 2POS STR 3.81MM	0
1980520000 Weidmuller	TERM BLOCK PLUG 6POS STR 7.62MM	42
1690940000 Weidmuller	TERM BLOCK PLUG 8POS STR 3.5MM	0
1000360001 Weidmuller	TERM BLOCK PLUG 16POS 5.08MM	0

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