Terminal Blocks - Headers, Plugs and Sockets

Part Number	Description / PDF	Quantity
1626210000 Weidmuller	TERM BLOCK HDR 2POS 90DEG 5MM	5592500
1049020000 Weidmuller	TERM BLOCK PLUG 6POS STR 7.62MM	67
1122140000 Weidmuller	TERM BLOCK HDR 5POS VERT 7.62MM	108
1726980000 Weidmuller	TERM BLOCK HDR 6POS VERT 5.08MM	0
1780410000 Weidmuller	TERM BLOCK HDR 2POS 90DEG 5.08MM	35902200
2647270000 Weidmuller	TERM BLK PLUG 4POS 180DEG 5.08MM	161
1500310000 Weidmuller	TERM BLOCK PLUG 10POS STR 5.08MM	0
1838280000 Weidmuller	TERM BLOCK HDR 9POS VERT 5.08MM	145
1970370000 Weidmuller	TERM BLOCK PLUG 4POS STR 3.81MM	112
1612100000 Weidmuller	TERM BLOCK PLUG 7POS STR 7MM	40
2642680000 Weidmuller	TERM BLK PLUG 4POS 180DEG 3.81MM	209210
1001010000 Weidmuller	TERM BLOCK PLUG 2POS STR 5.08MM	100
1954410000 Weidmuller	TERM BLOCK PLUG 10POS STR 5MM	0
1762012001 Weidmuller	TERM BLOCK HDR 3POS 90DEG 3.5MM	0
2649630000 Weidmuller	TERM BLK HDR 6POS 180DEG 5.08MM	240240
1728970000 Weidmuller	TERM BLOCK HDR 10POS VERT 3.5MM	12896
1014460000 Weidmuller	TERM BLOCK PLUG 10POS STR 5.08MM	60
1943940000 Weidmuller	TERM BLOCK PLUG 15POS STR 5.08MM	5562
1060510000 Weidmuller	TERM BLOCK PLUG 3POS STR 7.62MM	10040
1146450000 Weidmuller	TERM BLOCK HDR 6POS VERT 5.08MM	783900

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