Terminal Blocks - Headers, Plugs and Sockets

Part Number	Description / PDF	Quantity
1510360000 Weidmuller	TERM BLOCK HDR 2POS 90DEG 5.08MM	400
1357920000 Weidmuller	TERM BLOCK HDR 16POS 90DEG 3.5MM	20
1000570000 Weidmuller	TERM BLOCK PLUG 10POS STR 3.5MM	20
1943640000 Weidmuller	TERM BLOCK PLUG 8POS STR 5.08MM	79
1289530000 Weidmuller	TERM BLOCK HDR 20POS 90DEG 3.5MM	14630
1000200001 Weidmuller	TERM BLOCK PLUG 19POS 5.08MM	0
1775082001 Weidmuller	TERM BLOCK HDR 10POS 5.08MM	0
1780450000 Weidmuller	TERM BLOCK HDR 6POS 90DEG 5.08MM	141
1776522001 Weidmuller	TERM BLOCK HDR 18POS VERT 5.08MM	78
1711960000 Weidmuller	TERM BLOCK PLUG 2POS STR 5.08MM	419
1581060000 Weidmuller	TERM BLOCK HDR 22POS 90DEG 5MM	96
1043350000 Weidmuller	TERM BLOCK PLUG 2POS STR 7.62MM	200
1793280000 Weidmuller	TERM BLOCK HDR 6POS 90DEG 3.81MM	15
1838110000 Weidmuller	TERM BLOCK HDR 15POS VERT 5.08MM	100
1043840000 Weidmuller	TERM BLOCK PLUG 3POS STR 7.62MM	153
1762222001 Weidmuller	TERM BLOCK HDR 24POS 90DEG 3.5MM	0
1775632001 Weidmuller	TERM BLOCK HDR 5POS VERT 5.08MM	0
1728650000 Weidmuller	TERM BLOCK HDR 10POS 90DEG 3.5MM	25
1649430000 Weidmuller	TERM BLOCK PLUG 8POS STR 5.08MM	0
1949040000 Weidmuller	TERM BLOCK PLUG 4POS 5.08MM	2070

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