Terminal Blocks - Headers, Plugs and Sockets

Part Number	Description / PDF	Quantity
OQ0532510000G Anytek (Amphenol Anytek)	TERM BLOCK HDR 5POS 90DEG 3.81MM	2357
TJ0371500000G Anytek (Amphenol Anytek)	TERM BLOCK PLUG 3POS STR 5MM	543
HW0870520000G Anytek (Amphenol Anytek)	TERM BLOCK PLUG 8POS STR 5MM	0
OQ0670510000G Anytek (Amphenol Anytek)	TERM BLOCK HDR 6POS 90DEG 5MM	192
KD033050000AG Anytek (Amphenol Anytek)	KD -3.81 - 3P GREEN (RAL6018/T)	330
VK0232500000G Anytek (Amphenol Anytek)	TERM BLOCK HDR 2POS 45DEG 3.81MM	0
OQ0835500000G Anytek (Amphenol Anytek)	TERM BLOCK HDR 8POS VERT 3.81MM	0
TJ1031520000G Anytek (Amphenol Anytek)	TERM BLOCK PLUG 10POS STR 3.81MM	0
OQ0732500000G Anytek (Amphenol Anytek)	TERM BLOCK HDR 7POS VERT 3.81MM	1972
HW0350520000G Anytek (Amphenol Anytek)	TERM BLOCK PLUG 3POS STR 5.08MM	0
OQ0655500000G Anytek (Amphenol Anytek)	TERM BLOCK HDR 6POS VERT 5.08MM	0
TJ1051520000G Anytek (Amphenol Anytek)	TERM BLOCK PLUG 10POS STR 5.08MM	298
OQ1271500000G Anytek (Amphenol Anytek)	TERM BLOCK HDR 12POS VERT 5MM	80
OQ0470500000G Anytek (Amphenol Anytek)	TERM BLOCK HDR 4POS VERT 5MM	0
TS04515D0000G Anytek (Amphenol Anytek)	TERM BLOCK PLUG 4POS 5.08MM	0
VM0235500000G Anytek (Amphenol Anytek)	TERM BLOCK PLUG 2POS STR 3.81MM	0
TS03315B0000G Anytek (Amphenol Anytek)	TERM BLOCK PLUG 3POS 3.81MM	0
OQ1871510000G Anytek (Amphenol Anytek)	TERM BLOCK HDR 18POS 90DEG 5MM	0
OQ0355500000G Anytek (Amphenol Anytek)	TERM BLOCK HDR 3POS VERT 5.08MM	0
TS03515A0000G Anytek (Amphenol Anytek)	TERM BLOCK PLUG 3POS 5.08MM	1966

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