Terminal Blocks - Headers, Plugs and Sockets

Image	Part Number	Description / PDF	Quantity	Rfq
	KK1061510000G Anytek (Amphenol Anytek)	TERM BLOCK PLUG 10POS 10.16MM	0
	TJ0531030000G Anytek (Amphenol Anytek)	TERM BLOCK PLUG 5POS STR 3.81MM	0
	OQ2471800000G Anytek (Amphenol Anytek)	TERM BLOCK HDR 24POS VERT 5MM	0
	OQ0201010000G Anytek (Amphenol Anytek)	TERM BLOCK HDR 2POS 90DEG 7.62MM	0
	VF0872500000G Anytek (Amphenol Anytek)	TERM BLOCK HDR 8POS VERT 5MM	0
	V91551550000G Anytek (Amphenol Anytek)	TERM BLOCK RCPT 15POS 5.08MM	0
	NB13A0820000G Anytek (Amphenol Anytek)	TERM BLOCK PLUG 13POS STR 7.5MM	0
	OQ2471500000G Anytek (Amphenol Anytek)	TERM BLOCK HDR 24POS VERT 5MM	0
	KV2450510000G Anytek (Amphenol Anytek)	TERM BLOCK HOUSING 24POS 5.08MM	0
	V70771510000G Anytek (Amphenol Anytek)	TERM BLOCK HDR 7POS 90DEG 5MM	0
	OQ0854510300G Anytek (Amphenol Anytek)	TERM BLOCK HDR 8POS 90DEG 5.08MM	0
	HW1670030000G Anytek (Amphenol Anytek)	TERM BLOCK PLUG 16POS STR 5MM	0
	VE0932500000G Anytek (Amphenol Anytek)	TERM BLOCK HDR 9POS VERT 3.81MM	0
	VL3271500000G Anytek (Amphenol Anytek)	TERM BLOCK HDR 32POS VERT 5MM	0
	VM1915800000G Anytek (Amphenol Anytek)	TERM BLOCK PLUG 19POS STR 3.5MM	0
	OQ0501510000G Anytek (Amphenol Anytek)	TERM BLOCK HDR 5POS 90DEG 7.62MM	0
	TJ0401020000G Anytek (Amphenol Anytek)	TERM BLOCK PLUG 4POS STR 7.62MM	0
	VL3472510000G Anytek (Amphenol Anytek)	TERM BLOCK HDR 34POS 90DEG 5MM	0
	OQ0301000000G Anytek (Amphenol Anytek)	TERM BLOCK HDR 3POS VERT 7.62MM	0
	NC05A2810000G Anytek (Amphenol Anytek)	TERM BLOCK HDR 5POS 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