Terminal Blocks - Headers, Plugs and Sockets

Image	Part Number	Description / PDF	Quantity	Rfq
	KI1250510000G Anytek (Amphenol Anytek)	TERM BLOCK PLUG 12POS STR 5.08MM	0
	VM11A5830000G Anytek (Amphenol Anytek)	TERM BLOCK PLUG 11POS STR 7.5MM	0
	VM1055520000G Anytek (Amphenol Anytek)	TERM BLOCK PLUG 10POS STR 5.08MM	0
	TT0441500000G Anytek (Amphenol Anytek)	TERM BLOCK PLUG 4POS 3.81MM	0
	HW0550010000G Anytek (Amphenol Anytek)	TERM BLOCK PLUG 5POS STR 5.08MM	0
	TJ1151840000G Anytek (Amphenol Anytek)	TERM BLOCK PLUG 11POS STR 5.08MM	0
	HW1170530000G Anytek (Amphenol Anytek)	TERM BLOCK PLUG 11POS STR 5MM	0
	V50651520000G Anytek (Amphenol Anytek)	TERM BLOCK RCPT 6POS 5.08MM	0
	TS14A10D0000G Anytek (Amphenol Anytek)	TERM BLOCK PLUG 14POS 7.5MM	0
	HP2130500000G Anytek (Amphenol Anytek)	TERM BLOCK PLUG 21POS STR 3.81MM	0
	TS03310A0000G Anytek (Amphenol Anytek)	TERM BLOCK PLUG 3POS 3.81MM	0
	OQ1015810000G Anytek (Amphenol Anytek)	TERM BLOCK HDR 10POS 90DEG 3.5MM	0
	HI2001530000G Anytek (Amphenol Anytek)	TERM BLOCK PLUG 20POS STR 5MM	0
	TH1321510000G Anytek (Amphenol Anytek)	TERM BLOCK PLUG 13POS 3.5MM	0
	TH1121500000G Anytek (Amphenol Anytek)	TERM BLOCK PLUG 11POS 3.5MM	0
	OQ0353810000G Anytek (Amphenol Anytek)	TERM BLOCK HDR 3POS 90DEG 5.08MM	0
	H51770500000G Anytek (Amphenol Anytek)	TERM BLOCK PLUG 17POS STR 5MM	0
	OQ1035810000G Anytek (Amphenol Anytek)	TERM BLOCK HDR 10POS 3.81MM	0
	EM12A1520000G Anytek (Amphenol Anytek)	TERM BLOCK PLUG 12POS 7.5MM	0
	VX041100B000G Anytek (Amphenol Anytek)	TERM BLOCK HDR 4POS 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