Terminal Blocks - Headers, Plugs and Sockets

Part Number	Description / PDF	Quantity
VK0432500000G Anytek (Amphenol Anytek)	TERM BLOCK HDR 4POS 45DEG 3.81MM	0
TS02315C0000G Anytek (Amphenol Anytek)	TERM BLOCK PLUG 2POS 3.81MM	0
TS05715A0000G Anytek (Amphenol Anytek)	TERM BLOCK PLUG 5POS 90DEG 5MM	1403
TS04715A0000G Anytek (Amphenol Anytek)	TERM BLOCK PLUG 4POS 90DEG 5MM	27216
VM0435520000G Anytek (Amphenol Anytek)	TERM BLOCK PLUG 4POS STR 3.81MM	0
TS02715B0000G Anytek (Amphenol Anytek)	TERM BLOCK PLUG 2POS 270DEG 5MM	4363
TS04715B0000G Anytek (Amphenol Anytek)	TERM BLOCK PLUG 4POS 270DEG 5MM	0
OQ0471500000G Anytek (Amphenol Anytek)	TERM BLOCK HDR 4POS VERT 5MM	1100
OQ0670500000G Anytek (Amphenol Anytek)	TERM BLOCK HDR 6POS VERT 5MM	0
TS03515B0000G Anytek (Amphenol Anytek)	TERM BLOCK PLUG 3POS 5.08MM	0
TS10315A0000G Anytek (Amphenol Anytek)	TERM BLOCK PLUG 10POS 3.81MM	129
20020009-H041B01LF Anytek (Amphenol Anytek)	TERM BLOCK PLUG 4POS 5.08MM	58
OQ0370500000G Anytek (Amphenol Anytek)	TERM BLOCK HDR 3POS VERT 5MM	0
HW0650520000G Anytek (Amphenol Anytek)	TERM BLOCK PLUG 6POS STR 5.08MM	0
TJ0251570000G Anytek (Amphenol Anytek)	TERM BLOCK PLUG 2POS STR 5.08MM	433
TS10515C0000G Anytek (Amphenol Anytek)	TERM BLOCK PLUG 10POS 5.08MM	0
TJ0471570000G Anytek (Amphenol Anytek)	TERM BLOCK PLUG 4POS STR 5MM	0
TJ0671570000G Anytek (Amphenol Anytek)	TERM BLOCK PLUG 6POS STR 5MM	0
TS09315A0000G Anytek (Amphenol Anytek)	TERM BLOCK PLUG 9POS 3.81MM	0
TS08315C0000G Anytek (Amphenol Anytek)	TERM BLOCK PLUG 8POS 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