Terminal Blocks - Headers, Plugs and Sockets

Image	Part Number	Description / PDF	Quantity	Rfq
	TJ1051020000G Anytek (Amphenol Anytek)	TERM BLOCK PLUG 10POS STR 5.08MM	0
	VM0655010000G Anytek (Amphenol Anytek)	TERM BLOCK PLUG 6POS STR 5.08MM	0
	HW0500000000G Anytek (Amphenol Anytek)	TERM BLOCK PLUG 5POS STR 7.62MM	0
	HN1350500000G Anytek (Amphenol Anytek)	TERM BLOCK PLUG 13POS STR 5.08MM	0
	OQ0254500300G Anytek (Amphenol Anytek)	TERM BLOCK HDR 2POS VERT 5.08MM	0
	NB0870800000G Anytek (Amphenol Anytek)	TERM BLOCK PLUG 8POS STR 5MM	0
	VX1811300000G Anytek (Amphenol Anytek)	TERM BLOCK HDR 18POS VERT 3.5MM	0
	OQ2271000000G Anytek (Amphenol Anytek)	TERM BLOCK HDR 22POS VERT 5MM	0
	KE261351A000G Anytek (Amphenol Anytek)	TERM BLOCK HDR 26POS 90DEG 3.5MM	0
	OQ1975500000G Anytek (Amphenol Anytek)	TERM BLOCK HDR 19POS VERT 5MM	0
	VC0502510000G Anytek (Amphenol Anytek)	TERM BLOCK HDR 5POS VERT 7.62MM	0
	EW0561520000G Anytek (Amphenol Anytek)	TERM BLOCK HDR 5POS 10.16MM	0
	VF3070510000G Anytek (Amphenol Anytek)	TERM BLOCK HDR 30POS 90DEG 5MM	0
	OQ1600500000G Anytek (Amphenol Anytek)	TERM BLOCK HDR 16POS VERT 7.62MM	0
	K3631250A000G Anytek (Amphenol Anytek)	TERM BLOCK HDR 63POS VERT 3.5MM	0
	VE0930500000G Anytek (Amphenol Anytek)	TERM BLOCK HDR 9POS VERT 3.81MM	0
	TJ0701520000G Anytek (Amphenol Anytek)	TERM BLOCK PLUG 7POS STR 7.62MM	0
	TY0501000000G Anytek (Amphenol Anytek)	TERM BLOCK PLUG 5POS 90DEG 5MM	0
	V72332500000G Anytek (Amphenol Anytek)	TERM BLOCK HDR 23POS VERT 3.81MM	0
	EL0711520000G Anytek (Amphenol Anytek)	TERM BLOCK HDR 7POS VERT 3.5MM	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