Terminal Blocks - Headers, Plugs and Sockets

Image	Part Number	Description / PDF	Quantity	Rfq
	OP0563000000G Anytek (Amphenol Anytek)	TERM BLOCK HDR 5POS VERT 8MM	0
	TS11110B0000G Anytek (Amphenol Anytek)	TERM BLOCK PLUG 11POS 3.5MM	0
	V81131500000G Anytek (Amphenol Anytek)	TERM BLOCK PLUG 11POS STR 3.81MM	0
	KE3472520000G Anytek (Amphenol Anytek)	TERM BLOCK HDR 34POS VERT 5MM	0
	TS22318D0000G Anytek (Amphenol Anytek)	TERM BLOCK PLUG 22POS 3.81MM	0
	KD2250500000G Anytek (Amphenol Anytek)	TERM BLOCK PLUG 22POS STR 5.08MM	0
	VL44B1500000G Anytek (Amphenol Anytek)	TERM BLOCK HDR 44POS VERT 2.5MM	0
	OQ0335000000G Anytek (Amphenol Anytek)	TERM BLOCK HDR 3POS VERT 3.81MM	0
	TS16710A0000G Anytek (Amphenol Anytek)	TERM BLOCK PLUG 16POS 90DEG 5MM	0
	VF2871500000G Anytek (Amphenol Anytek)	TERM BLOCK HDR 28POS VERT 5MM	0
	V50251510000G Anytek (Amphenol Anytek)	TERM BLOCK RCPT 2POS 5.08MM	0
	TS18110D0000G Anytek (Amphenol Anytek)	TERM BLOCK PLUG 18POS 3.5MM	0
	NB0670800000G Anytek (Amphenol Anytek)	TERM BLOCK PLUG 6POS STR 5MM	0
	VB1201500000G Anytek (Amphenol Anytek)	TERM BLOCK PLUG 12POS STR 7.62MM	0
	H417705C0000G Anytek (Amphenol Anytek)	TERM BLOCK PLUG 17POS STR 5MM	0
	HW2410500000G Anytek (Amphenol Anytek)	TERM BLOCK PLUG 24POS STR 3.5MM	0
	HW1100020000G Anytek (Amphenol Anytek)	TERM BLOCK PLUG 11POS STR 7.62MM	0
	K50951500000G Anytek (Amphenol Anytek)	TERM BLOCK PLUG 9POS 5.08MM	0
	OQ0512510300G Anytek (Amphenol Anytek)	TERM BLOCK HDR 5POS 90DEG 3.5MM	0
	OQ16A1510000G Anytek (Amphenol Anytek)	TERM BLOCK HDR 16POS 90DEG 7.5MM	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