Terminal Blocks - Headers, Plugs and Sockets

Part Number	Description / PDF	Quantity
SVP13-3,50-K Altech Corporation	PLUG PCB 13P 350MM VERT 11A 300V	0
37.624 Altech Corporation	PCB HEADER 24 P 5.00MM STL950/24	0
36.106 Altech Corporation	PCB PLUG 6P 5.08MM VERT AKZ1200/	0
PDSH11-10,16 Altech Corporation	DOUBLE LV1 HDR HORIZ 22P1016MMPS	0
36.102 Altech Corporation	PCB PLUG 2P 5.08MM VERT AKZ1200/	0
SH11-10,16-K Altech Corporation	PCBPLUGWITH SCREW FLANGE 1016MM1	0
38.014 Altech Corporation	PCB PLUG 14 P 7.62MM HORIZONTAL	0
PV16-3,50-K Altech Corporation	PCB HEADER 16P 350MM VERTICAL 11	0
SVP03-3,50 Altech Corporation	PLUG PCB 3P 350MM VERT 11A 300V	0
30.326 Altech Corporation	TERM PLUG 6 P 5MM GRYBL 9A 150V	450
SVF07-5,08 Altech Corporation	PLUG PCB 508MMPS VERT 7P 12A300V	0
SH11-10,00 Altech Corporation	PCBPLUG 10MMPS 11P 12A 300V GRN	0
PV12-7,50 Altech Corporation	PCB HDR VERT 75MMPS OPEN END12PS	0
37.670 Altech Corporation	PCB HEADER 20 P 5.08MM STLZ990/2	0
37.402 Altech Corporation	PCB HEADER 2 P 5.00MM STL950/025	0
SF07-5,08 Altech Corporation	PCB HORIZ INVERTEDPLUG 508MMPS 7	0
PV04-5,00-LS Altech Corporation	PCB HEADER 4P LEFT SIDE 500MM 12	0
PVP20-5,08 Altech Corporation	VERTHEADER508PSCLOSED END 20P12A	80
PDV23-3,81-V-K Altech Corporation	PCB DUAL ROW HEADER 23P 381MM VE	0
PDV21-3,81-H-K Altech Corporation	PCB DUAL ROW HEADER 21P 381MM HO	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