Terminal Blocks - Headers, Plugs and Sockets

Image	Part Number	Description / PDF	Quantity	Rfq
	TJ1171860000G Anytek (Amphenol Anytek)	TERM BLOCK PLUG 11POS STR 5MM	0
	HW1500020000G Anytek (Amphenol Anytek)	TERM BLOCK PLUG 15POS STR 7.62MM	0
	KE161150A000G Anytek (Amphenol Anytek)	TERM BLOCK HDR 16POS VERT 3.5MM	0
	OQ2371010000G Anytek (Amphenol Anytek)	TERM BLOCK HDR 23POS 90DEG 5MM	0
	TS24710C0000G Anytek (Amphenol Anytek)	TERM BLOCK PLUG 24POS 90DEG 5MM	0
	V70732500000G Anytek (Amphenol Anytek)	TERM BLOCK HDR 7POS VERT 3.81MM	0
	NB2070820000G Anytek (Amphenol Anytek)	TERM BLOCK PLUG 20POS STR 5MM	0
	OQ0354600000G Anytek (Amphenol Anytek)	TERM BLOCK HDR 3POS VERT 5.08MM	0
	OQ0953510000G Anytek (Amphenol Anytek)	TERM BLOCK HDR 9POS 90DEG 5.08MM	0
	TT0601810000G Anytek (Amphenol Anytek)	TERM BLOCK PLUG 6POS 90DEG 5MM	0
	V50751500000G Anytek (Amphenol Anytek)	TERM BLOCK RCPT 7POS 5.08MM	0
	OQ05A0500000G Anytek (Amphenol Anytek)	TERM BLOCK HDR 5POS VERT 7.5MM	0
	VM0315820000G Anytek (Amphenol Anytek)	TERM BLOCK PLUG 3POS STR 3.5MM	0
	TJ0250030600Y Anytek (Amphenol Anytek)	TERM BLOCK	0
	K3451250A000G Anytek (Amphenol Anytek)	TERM BLOCK HDR 45POS VERT 3.5MM	0
	NC2071810000G Anytek (Amphenol Anytek)	TERM BLOCK HDR 20POS 90DEG 5MM	0
	HW12B0800000G Anytek (Amphenol Anytek)	TERM BLOCK PLUG 12POS STR 2.5MM	0
	V71301500000G Anytek (Amphenol Anytek)	TERM BLOCK HDR 13POS VERT 7.62MM	0
	OQ0954800000G Anytek (Amphenol Anytek)	TERM BLOCK HDR 9POS VERT 5.08MM	0
	KD2230510000G Anytek (Amphenol Anytek)	TERM BLOCK PLUG 22POS STR 3.81MM	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