Terminal Blocks - Headers, Plugs and Sockets

Image	Part Number	Description / PDF	Quantity	Rfq
	VC13015B0000G Anytek (Amphenol Anytek)	TERM BLOCK HDR 13POS 7.62MM	0
	VL4212500000G Anytek (Amphenol Anytek)	TERM BLOCK HDR 42POS VERT 3.5MM	0
	ET0902500000G Anytek (Amphenol Anytek)	TERM BLOCK PLUG 9POS STR 7.62MM	0
	20020004-C162B01LF Anytek (Amphenol Anytek)	TERM BLOCK PLUG 16POS STR 3.5MM	0
	V51451530000G Anytek (Amphenol Anytek)	TERM BLOCK RCPT 14POS 5.08MM	0
	TS13A18A0000G Anytek (Amphenol Anytek)	TERM BLOCK PLUG 13POS 7.5MM	0
	V71372500000G Anytek (Amphenol Anytek)	TERM BLOCK HDR 13POS VERT 5MM	0
	TS20515A0000G Anytek (Amphenol Anytek)	TERM BLOCK PLUG 20POS 5.08MM	0
	HW1730520000G Anytek (Amphenol Anytek)	TERM BLOCK PLUG 17POS STR 3.81MM	0
	OQ2015500000G Anytek (Amphenol Anytek)	TERM BLOCK HDR 20POS VERT 3.5MM	0
	OQ07A1500000G Anytek (Amphenol Anytek)	TERM BLOCK HDR 7POS VERT 7.5MM	0
	TJ0301020000G Anytek (Amphenol Anytek)	TERM BLOCK PLUG 3POS STR 7.62MM	0
	HW2110820000G Anytek (Amphenol Anytek)	TERM BLOCK PLUG 21POS STR 3.5MM	0
	TJ1971840000G Anytek (Amphenol Anytek)	TERM BLOCK PLUG 19POS STR 5MM	0
	VO3432500000G Anytek (Amphenol Anytek)	TERM BLOCK HDR 34POS VERT 3.81MM	0
	TS09A15C0000G Anytek (Amphenol Anytek)	TERM BLOCK PLUG 9POS 90DEG 7.5MM	0
	KV2150550000G Anytek (Amphenol Anytek)	TERM BLOCK HOUSING 21POS 5.08MM	0
	EX050002A000G Anytek (Amphenol Anytek)	TERM BLOCK SOCKET MATCH EO	0
	KE341251A000G Anytek (Amphenol Anytek)	TERM BLOCK HDR 34POS 90DEG 3.5MM	0
	VL3651500000G Anytek (Amphenol Anytek)	TERM BLOCK HDR 36POS VERT 5.08MM	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