Terminal Blocks - Headers, Plugs and Sockets

Image	Part Number	Description / PDF	Quantity	Rfq
	HW1650550000G Anytek (Amphenol Anytek)	TERM BLOCK PLUG 16POS STR 5.08MM	0
	OQ2470010000G Anytek (Amphenol Anytek)	TERM BLOCK HDR 24POS 90DEG 5MM	0
	20020004-C112B01LF Anytek (Amphenol Anytek)	TERM BLOCK PLUG 11POS STR 3.5MM	0
	KE243351A000G Anytek (Amphenol Anytek)	TERM BLOCK HDR 24POS 3.81MM	0
	OQ1412810000G Anytek (Amphenol Anytek)	TERM BLOCK HDR 14POS 90DEG 3.5MM	0
	OQ0854810000G Anytek (Amphenol Anytek)	TERM BLOCK HDR 8POS 90DEG 5.08MM	0
	OQ1132500000G Anytek (Amphenol Anytek)	TERM BLOCK HDR 11POS VERT 3.81MM	0
	VO0431500000G Anytek (Amphenol Anytek)	TERM BLOCK HDR 4POS VERT 3.81MM	0
	OQ1535500000G Anytek (Amphenol Anytek)	TERM BLOCK HDR 15POS VERT 3.81MM	0
	VW2010300000G Anytek (Amphenol Anytek)	TERM BLOCK PLUG 20POS STR 3.5MM	0
	OQ2454010300G Anytek (Amphenol Anytek)	TERM BLOCK HDR 24POS 5.08MM	0
	OP0604210000G Anytek (Amphenol Anytek)	TERM BLOCK HDR	0
	VK2231500000G Anytek (Amphenol Anytek)	TERM BLOCK HDR 22POS 3.81MM	0
	HN0650500000G Anytek (Amphenol Anytek)	TERM BLOCK PLUG 6POS STR 5.08MM	0
	EX200002A000G Anytek (Amphenol Anytek)	TERM BLOCK SOCKET MATCH EO	0
	20020414-G112001LF Anytek (Amphenol Anytek)	TERM BLOCK HDR 11POS VERT 5MM	0
	TJ0801820000G Anytek (Amphenol Anytek)	TERM BLOCK PLUG 8POS STR 7.62MM	0
	KE3471520000G Anytek (Amphenol Anytek)	TERM BLOCK HDR 34POS VERT 5MM	0
	KS0701510000G Anytek (Amphenol Anytek)	TERM BLOCK HDR 7POS 90DEG 7.62MM	0
	HW1670830000G Anytek (Amphenol Anytek)	TERM BLOCK PLUG 16POS STR 5MM	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