Terminal Blocks - Headers, Plugs and Sockets

Part Number	Description / PDF	Quantity
PDV10-3,81-H-P Altech Corporation	PCB DUAL ROW HDR 10P 381MM HORIZ	0
PV14-5,08-K Altech Corporation	PCB VERT HEADERSCREW FLANGE 508P	0
SVF07-10,16 Altech Corporation	PLUG PCB 1016MMPS VERT 7P 12A300	0
SH02-7,50 Altech Corporation	PCBPLUG 75MMPS 2PS 12A 300V GRN	100
PHP05-5,08 Altech Corporation	PCB HEADER508MMPSCLOSED END 5PHO	200
PH17-3,50-K Altech Corporation	PCB HEADER 17P 350MM HORIZONTAL	0
SVR23-5,00-K Altech Corporation	PLUG PCB SCREW VERT 5MMPS 23P 12	0
SF03-5,08 Altech Corporation	PCB HORIZ INVERTEDPLUG 508MMPS 3	600
PI16-5,08 Altech Corporation	PCB HDR 45 DEG 508PITCH OPEN END	0
PVP06-5,08 Altech Corporation	VERTHEADER508PSCLOSED END 6P12A3	2550
36.463 Altech Corporation	PCB HDR 13P 3.81MM STLZ1550/13G3	20
PV08-5,00 Altech Corporation	PCB HDR VERT 5MMPS 8POPEN END12A	50
SH07-5,08 Altech Corporation	PCBPLUG 508MMPS 7P12A300VGRN	3700
PDV08-3,50-H-K Altech Corporation	PCB DUAL ROW HDR 8P 350MM HORIZO	0
36.206 Altech Corporation	PCB PLUG 6P 5.00MM VERT AK1100/0	0
SVF06-10,16 Altech Corporation	PLUG PCB 1016MMPS VERT 6P 12A300	0
PDV10-3,81-V-M Altech Corporation	PCB DUAL ROW HDR 10P 381MM VERTI	0
SH14-3,81 Altech Corporation	PCBPLUG 14P 381MM HORIZONTAL 11A	300
SH09-5,08-K Altech Corporation	PCB-PLUG WSCREW FLANGE 508MMPS9P	200
PVP13-3,81 Altech Corporation	PCB HEADER 13P 381MM VERTICAL 11	200

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