Terminal Blocks - Headers, Plugs and Sockets

Part Number	Description / PDF	Quantity
OQ1035510000G Anytek (Amphenol Anytek)	TERM BLOCK HDR 10POS 3.81MM	0
TJ0351520000G Anytek (Amphenol Anytek)	TERM BLOCK PLUG 3POS STR 5.08MM	0
OQ0270510000G Anytek (Amphenol Anytek)	TERM BLOCK HDR 2POS 90DEG 5MM	646
OQ1032500000G Anytek (Amphenol Anytek)	TERM BLOCK HDR 10POS VERT 3.81MM	127
VM0835520000G Anytek (Amphenol Anytek)	TERM BLOCK PLUG 8POS STR 3.81MM	0
OQ0270500000G Anytek (Amphenol Anytek)	TERM BLOCK HDR 2POS VERT 5MM	2557
TS04315A0000G Anytek (Amphenol Anytek)	TERM BLOCK PLUG 4POS 3.81MM	0
OQ0732510000G Anytek (Amphenol Anytek)	TERM BLOCK HDR 7POS 90DEG 3.81MM	1898
ET0301520000G Anytek (Amphenol Anytek)	TERM BLOCK PLUG 3POS STR 7.62MM	207
VM0835500000G Anytek (Amphenol Anytek)	TERM BLOCK PLUG 8POS STR 3.81MM	409
OQ0853500000G Anytek (Amphenol Anytek)	TERM BLOCK HDR 8POS VERT 5.08MM	978
TS16715A0000G Anytek (Amphenol Anytek)	TERM BLOCK PLUG 16POS 90DEG 5MM	148
VC0200510000G Anytek (Amphenol Anytek)	TERM BLOCK HDR 2POS VERT 7.62MM	0
KE1071530000G Anytek (Amphenol Anytek)	TERM BLOCK HDR 10POS 90DEG 5MM	1625
OQ1254510000G Anytek (Amphenol Anytek)	TERM BLOCK HDR 12POS 5.08MM	340
OQ1071510000G Anytek (Amphenol Anytek)	TERM BLOCK HDR 10POS 90DEG 5MM	0
20020012-G021B01LF Anytek (Amphenol Anytek)	TERM BLOCK PLUG 2POS STR 5MM	0
TJ0931530000G Anytek (Amphenol Anytek)	TERM BLOCK PLUG 9POS STR 3.81MM	947
20020013-H031B01LF Anytek (Amphenol Anytek)	TERM BLOCK PLUG 3POS STR 5.08MM	0
VK0832500000G Anytek (Amphenol Anytek)	TERM BLOCK HDR 8POS 45DEG 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