Terminal Blocks - Headers, Plugs and Sockets

Part Number	Description / PDF	Quantity
1012060000 Weidmuller	TERM BLOCK PLUG 3POS STR 5.08MM	90
1000880000 Weidmuller	TERM BLOCK PLUG 4POS STR 5.08MM	100
1691130000 Weidmuller	TERM BLOCK PLUG 4POS STR 3.5MM	77
1969170000 Weidmuller	TERM BLOCK PLUG 10POS STR 3.81MM	98
1730700000 Weidmuller	TERM BLOCK PLUG 2POS STR 5MM	280
1615680000 Weidmuller	TERM BLOCK PLUG 3POS STR 3.5MM	65823500
1762062001 Weidmuller	TERM BLOCK HDR 8POS 90DEG 3.5MM	0
1634330000 Weidmuller	TERM BLOCK HDR 16POS 90DEG 3.5MM	472140
1688100000 Weidmuller	TERM BLOCK PLUG 24POS STR 3.5MM	18126
1789110000 Weidmuller	TERM BLOCK PLUG 10/30POS 3.5MM	9420
1524160000 Weidmuller	TERM BLOCK HDR 2POS VERT 5.08MM	150
1500510000 Weidmuller	TERM BLOCK PLUG 12POS STR 5.08MM	60
1069350000 Weidmuller	TERM BLOCK PLUG 4POS 90DEG 5MM	78234
1155320000 Weidmuller	TERM BLOCK HDR 2POS 90DEG 5.08MM	1068
1605080000 Weidmuller	TERM BLOCK HDR 3POS 90DEG 3.5MM	1373
1278260000 Weidmuller	TERM BLOCK PLUG 10POS STR 3.5MM	57
1521960000 Weidmuller	TERM BLOCK HDR 3POS VERT 5.08MM	701500
1000930000 Weidmuller	TERM BLOCK PLUG 2POS STR 5.08MM	200
1614170000 Weidmuller	TERM BLOCK HDR 5POS 90DEG 3.5MM	147
1353760000 Weidmuller	TERM BLOCK HDR 2POS VERT 5.08MM	302

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