Terminal Blocks - Headers, Plugs and Sockets

Part Number	Description / PDF	Quantity
VC15015B0000G Anytek (Amphenol Anytek)	TERM BLOCK HDR 15POS 7.62MM	0
KE401250A000G Anytek (Amphenol Anytek)	TERM BLOCK HDR 40POS VERT 3.5MM	0
V50931510000G Anytek (Amphenol Anytek)	TERM BLOCK RCPT 9POS 3.81MM	0
VM1835820000G Anytek (Amphenol Anytek)	TERM BLOCK PLUG 18POS STR 3.81MM	0
VX1012310000G Anytek (Amphenol Anytek)	TERM BLOCK HDR 10POS 90DEG 3.5MM	0
V710A2500000G Anytek (Amphenol Anytek)	TERM BLOCK HDR 10POS VERT 7.5MM	0
VM1855830000G Anytek (Amphenol Anytek)	TERM BLOCK PLUG 18POS STR 5.08MM	0
OQ03A1500000G Anytek (Amphenol Anytek)	TERM BLOCK HDR 3POS VERT 7.5MM	0
TJ10A1520000G Anytek (Amphenol Anytek)	TERM BLOCK PLUG 10POS STR 7.5MM	0
EP1200000000G Anytek (Amphenol Anytek)	TERM BLOCK HDR 12POS VERT 5MM	0
H507A0520000G Anytek (Amphenol Anytek)	TERM BLOCK PLUG 7POS STR 7.5MM	0
TH0221000000G Anytek (Amphenol Anytek)	TERM BLOCK PLUG 2POS 90DEG 3.5MM	0
HW0870020000G Anytek (Amphenol Anytek)	TERM BLOCK PLUG 8POS STR 5MM	0
TJ0671540000G Anytek (Amphenol Anytek)	TERM BLOCK PLUG 6POS STR 5MM	0
OQ2254500300G Anytek (Amphenol Anytek)	TERM BLOCK HDR 22POS VERT 5.08MM	0
VM2355810000G Anytek (Amphenol Anytek)	TERM BLOCK PLUG 23POS STR 5.08MM	0
OP0722000000G Anytek (Amphenol Anytek)	TERM BLOCK HDR 7POS VERT 3.5MM	0
HN0950500000G Anytek (Amphenol Anytek)	TERM BLOCK PLUG 9POS STR 5.08MM	0
TS03A15D0000G Anytek (Amphenol Anytek)	TERM BLOCK PLUG 3POS 7.5MM	0
KE123151A00AG Anytek (Amphenol Anytek)	KE-3.81- 2*6P GREEN (RAL6018/T)	70

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