Terminal Blocks - Headers, Plugs and Sockets

Image	Part Number	Description / PDF	Quantity	Rfq
	V52131500000G Anytek (Amphenol Anytek)	TERM BLOCK RCPT 21POS 3.81MM	0
	VL3832500000G Anytek (Amphenol Anytek)	TERM BLOCK HDR 38POS VERT 3.81MM	0
	VM1355000000G Anytek (Amphenol Anytek)	TERM BLOCK PLUG 13POS STR 5.08MM	0
	OQ1301810000G Anytek (Amphenol Anytek)	TERM BLOCK HDR 13POS 7.62MM	0
	V72451510000G Anytek (Amphenol Anytek)	TERM BLOCK HDR 24POS 5.08MM	0
	EL1615000000G Anytek (Amphenol Anytek)	TERM BLOCK 350 SOC CLO WF VE	0
	VM02A5030000G Anytek (Amphenol Anytek)	TERM BLOCK PLUG 2POS STR 7.5MM	0
	HI0820530000G Anytek (Amphenol Anytek)	TERM BLOCK PLUG 8POS STR 7.5MM	0
	KE183251A000G Anytek (Amphenol Anytek)	TERM BLOCK HDR 18POS 3.81MM	0
	OQ1000010000G Anytek (Amphenol Anytek)	TERM BLOCK HDR 10POS 7.62MM	0
	V82051500000G Anytek (Amphenol Anytek)	TERM BLOCK PLUG 20POS STR 5.08MM	0
	VC16005C0000G Anytek (Amphenol Anytek)	TERM BLOCK HDR 16POS 7.62MM	0
	EZ0471500000G Anytek (Amphenol Anytek)	TERM BLOCK PLUG 4POS STR 5MM	0
	TJ1831820000G Anytek (Amphenol Anytek)	TERM BLOCK PLUG 18POS STR 3.81MM	0
	HW0850850000G Anytek (Amphenol Anytek)	TERM BLOCK PLUG 8POS STR 5.08MM	0
	V71612510000G Anytek (Amphenol Anytek)	TERM BLOCK HDR 16POS 90DEG 3.5MM	0
	KE303151A000G Anytek (Amphenol Anytek)	TERM BLOCK HDR 30POS 3.81MM	0
	VO0831510000G Anytek (Amphenol Anytek)	TERM BLOCK HDR 8POS 90DEG 3.81MM	0
	TJ2331840000G Anytek (Amphenol Anytek)	TERM BLOCK PLUG 23POS STR 3.81MM	0
	EL1112000000G Anytek (Amphenol Anytek)	TERM BLOCK 350 SOC CLOSE VER	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