Terminal Blocks - Headers, Plugs and Sockets

Part Number	Description / PDF	Quantity
OQ0453500000G Anytek (Amphenol Anytek)	TERM BLOCK HDR 4POS VERT 5.08MM	1867
HW0610520000G Anytek (Amphenol Anytek)	TERM BLOCK PLUG 6POS STR 3.5MM	0
TJ1051530000G Anytek (Amphenol Anytek)	TERM BLOCK PLUG 10POS STR 5.08MM	2776
VK0671500000G Anytek (Amphenol Anytek)	TERM BLOCK HDR 6POS 45DEG 5MM	0
TJ1051560000G Anytek (Amphenol Anytek)	TERM BLOCK PLUG 10POS STR 5.08MM	0
TS12715A0000G Anytek (Amphenol Anytek)	TERM BLOCK PLUG 12POS 90DEG 5MM	1378
KE0671530000G Anytek (Amphenol Anytek)	TERM BLOCK HDR 6POS 90DEG 5MM	1800
20020013-H021B01LF Anytek (Amphenol Anytek)	TERM BLOCK PLUG 2POS STR 5.08MM	0
TJ0851570000G Anytek (Amphenol Anytek)	TERM BLOCK PLUG 8POS STR 5.08MM	0
HW0370520000G Anytek (Amphenol Anytek)	TERM BLOCK PLUG 3POS STR 5MM	0
OQ0254510000G Anytek (Amphenol Anytek)	TERM BLOCK HDR 2POS 90DEG 5.08MM	3758
OQ0455510000G Anytek (Amphenol Anytek)	TERM BLOCK HDR 4POS 90DEG 5.08MM	0
HW0250500000G Anytek (Amphenol Anytek)	TERM BLOCK PLUG 2POS STR 5.08MM	0
TJ0471500000G Anytek (Amphenol Anytek)	TERM BLOCK PLUG 4POS STR 5MM	1917
TJ0771560000G Anytek (Amphenol Anytek)	TERM BLOCK PLUG 7POS STR 5MM	1984
OQ0971510000G Anytek (Amphenol Anytek)	TERM BLOCK HDR 9POS 90DEG 5MM	22
VC0201500000G Anytek (Amphenol Anytek)	TERM BLOCK HDR 2POS 90DEG 7.62MM	0
20020009-H031B01LF Anytek (Amphenol Anytek)	TERM BLOCK PLUG 3POS 5.08MM	0
VK0271500000G Anytek (Amphenol Anytek)	TERM BLOCK HDR 2POS 45DEG 5MM	0
VK0351500000G Anytek (Amphenol Anytek)	TERM BLOCK HDR 3POS 45DEG 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