Terminal Blocks - Headers, Plugs and Sockets

Part Number	Description / PDF	Quantity
HW0330520000G Anytek (Amphenol Anytek)	TERM BLOCK PLUG 3POS STR 3.81MM	0
VK1052500000G Anytek (Amphenol Anytek)	TERM BLOCK HDR 10POS 5.08MM	0
HW1010520000G Anytek (Amphenol Anytek)	TERM BLOCK PLUG 10POS STR 3.5MM	0
OQ0232500000G Anytek (Amphenol Anytek)	TERM BLOCK HDR 2POS VERT 3.81MM	0
TS02515B0000G Anytek (Amphenol Anytek)	TERM BLOCK PLUG 2POS 5.08MM	0
OQ0612500000G Anytek (Amphenol Anytek)	TERM BLOCK HDR 6POS VERT 3.5MM	1283
HW1050520000G Anytek (Amphenol Anytek)	TERM BLOCK PLUG 10POS STR 5.08MM	0
OQ0455500000G Anytek (Amphenol Anytek)	TERM BLOCK HDR 4POS VERT 5.08MM	11
OQ0415510000G Anytek (Amphenol Anytek)	TERM BLOCK HDR 4POS 90DEG 3.5MM	1617
20020012-G031B01LF Anytek (Amphenol Anytek)	TERM BLOCK PLUG 3POS STR 5MM	0
20020002-G021B01LF Anytek (Amphenol Anytek)	TERM BLOCK PLUG 2POS STR 5MM	0
VM0435500000G Anytek (Amphenol Anytek)	TERM BLOCK PLUG 4POS STR 3.81MM	0
OQ1070500000G Anytek (Amphenol Anytek)	TERM BLOCK HDR 10POS VERT 5MM	308
VK0371500000G Anytek (Amphenol Anytek)	TERM BLOCK HDR 3POS 45DEG 5MM	0
HW0450500000G Anytek (Amphenol Anytek)	TERM BLOCK PLUG 4POS STR 5.08MM	3337
TJ0271560000G Anytek (Amphenol Anytek)	TERM BLOCK PLUG 2POS STR 5MM	2192
VK0252500000G Anytek (Amphenol Anytek)	TERM BLOCK HDR 2POS 45DEG 5.08MM	0
OQ0371510000G Anytek (Amphenol Anytek)	TERM BLOCK HDR 3POS 90DEG 5MM	0
VM0335500000G Anytek (Amphenol Anytek)	TERM BLOCK PLUG 3POS STR 3.81MM	0
TS02315B0000G Anytek (Amphenol Anytek)	TERM BLOCK PLUG 2POS 3.81MM	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