Terminal Blocks - Headers, Plugs and Sockets

Part Number	Description / PDF	Quantity
KE2011010000G Anytek (Amphenol Anytek)	TERM BLOCK SOCKET RA	0
KD0210520000G Anytek (Amphenol Anytek)	TERM BLOCK PLUG 2POS STR 3.5MM	0
KE4271530000G Anytek (Amphenol Anytek)	TERM BLOCK HDR 42POS 90DEG 5MM	0
H51030510000G Anytek (Amphenol Anytek)	TERM BLOCK PLUG 10POS STR 3.81MM	0
KI2430520000G Anytek (Amphenol Anytek)	TERM BLOCK PLUG 24POS STR 3.81MM	0
EW0262520000G Anytek (Amphenol Anytek)	TERM BLOCK HDR 2POS 10.16MM	349
KI2450520000G Anytek (Amphenol Anytek)	TERM BLOCK PLUG 24POS STR 5.08MM	0
VO4832500000G Anytek (Amphenol Anytek)	TERM BLOCK HDR 48POS VERT 3.81MM	0
VE1231500000G Anytek (Amphenol Anytek)	TERM BLOCK HDR 12POS VERT 3.81MM	0
VX221100B000G Anytek (Amphenol Anytek)	TERM BLOCK HDR 22POS VERT 3.5MM	0
TJ1471540000G Anytek (Amphenol Anytek)	TERM BLOCK PLUG 14POS STR 5MM	0
NB10A0800000G Anytek (Amphenol Anytek)	TERM BLOCK PLUG 10POS STR 7.5MM	0
OQ2455810000G Anytek (Amphenol Anytek)	TERM BLOCK HDR 2POS 90DEG 5.08MM	0
20020517-M091A11LF Anytek (Amphenol Anytek)	TERM BLOCK PLUG 9POS STR 7.62MM	0
OQ0971000000G Anytek (Amphenol Anytek)	TERM BLOCK HDR 9POS VERT 5MM	0
VM0805830000G Anytek (Amphenol Anytek)	TERM BLOCK PLUG 8POS STR 7.62MM	0
NF1950520000G Anytek (Amphenol Anytek)	TERM BLOCK PLUG 19/38POS 5.08MM	0
VM1955010000G Anytek (Amphenol Anytek)	TERM BLOCK PLUG 19POS STR 5.08MM	0
VM09A5810000G Anytek (Amphenol Anytek)	TERM BLOCK PLUG 9POS STR 7.5MM	0
VO2412510000G Anytek (Amphenol Anytek)	TERM BLOCK HDR 24POS 90DEG 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