Terminal Blocks - Headers, Plugs and Sockets

Part Number	Description / PDF	Quantity
VL3652510000G Anytek (Amphenol Anytek)	TERM BLOCK HDR 36POS 5.08MM	0
VX181200B000G Anytek (Amphenol Anytek)	TERM BLOCK HDR 18POS VERT 3.5MM	0
HW1150550000G Anytek (Amphenol Anytek)	TERM BLOCK PLUG 11POS STR 5.08MM	0
OQ2453000000G Anytek (Amphenol Anytek)	TERM BLOCK HDR 24POS VERT 5.08MM	0
V71312500000G Anytek (Amphenol Anytek)	TERM BLOCK HDR 13POS VERT 3.5MM	0
KE061151A000G Anytek (Amphenol Anytek)	TERM BLOCK HDR 6POS 90DEG 3.5MM	1985
OQ15A1010000G Anytek (Amphenol Anytek)	TERM BLOCK HDR 15POS 90DEG 7.5MM	0
HW1330520000G Anytek (Amphenol Anytek)	TERM BLOCK PLUG 13POS STR 3.81MM	0
TJ15A1520000G Anytek (Amphenol Anytek)	TERM BLOCK PLUG 15POS STR 7.5MM	0
V51151520000G Anytek (Amphenol Anytek)	TERM BLOCK RCPT 11POS 5.08MM	0
OQ0854000300G Anytek (Amphenol Anytek)	TERM BLOCK HDR 8POS VERT 5.08MM	0
OQ0400000000G Anytek (Amphenol Anytek)	TERM BLOCK HDR 4POS VERT 7.62MM	0
TJ1231020000G Anytek (Amphenol Anytek)	TERM BLOCK PLUG 12POS STR 3.81MM	0
OQ1554000300G Anytek (Amphenol Anytek)	TERM BLOCK HDR 15POS VERT 5.08MM	0
TJ1051830000G Anytek (Amphenol Anytek)	TERM BLOCK PLUG 10POS STR 5.08MM	0
OQ0412600000G Anytek (Amphenol Anytek)	TERM BLOCK HDR 4POS VERT 3.5MM	0
KE423151A000G Anytek (Amphenol Anytek)	TERM BLOCK HDR 42POS 3.81MM	0
V70971510000G Anytek (Amphenol Anytek)	TERM BLOCK HDR 9POS 90DEG 5MM	0
TJ1571820000G Anytek (Amphenol Anytek)	TERM BLOCK PLUG 15POS STR 5MM	0
VX3011310000G Anytek (Amphenol Anytek)	TERM BLOCK HDR 30POS 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