Terminal Blocks - Headers, Plugs and Sockets

Image Part Number Description / PDF Quantity Rfq
1793320000

1793320000

Weidmuller

TERM BLOCK HDR 16POS 3.81MM

0

1809474

1809474

Phoenix Contact

TERM BLOCK HDR 2POS 90DEG 7.62MM

71

EDZ1100/2

EDZ1100/2

On-Shore Technology, Inc.

TERM BLOCK PLUG 2POS 5.08MM

427

3060144

3060144

Phoenix Contact

TERM BLOCK PLUG 4POS STR

6400

OSTOQ075450

OSTOQ075450

On-Shore Technology, Inc.

TERM BLOCK HDR 7POS VERT 5.08MM

0

TJ0451530000G

TJ0451530000G

Anytek (Amphenol Anytek)

TERM BLOCK PLUG 4POS STR 5.08MM

1301

ED950/11

ED950/11

On-Shore Technology, Inc.

TERM BLOCK PLUG 11POS STR 5MM

0

3209918

3209918

Phoenix Contact

TERM BLOCK PLUG 6POS STR

24

0395338011

0395338011

Woodhead - Molex

TERM BLOCK PLUG 11POS 5.08MM

427

796859-3

796859-3

TE Connectivity AMP Connectors

TERM BLOCK PLUG 3POS STR 5.08MM

183

691348500003

691348500003

Würth Elektronik Midcom

5.08 MM TERMINAL BLOCK PLUG, VER

370

1757585

1757585

Phoenix Contact

TERM BLOCK HDR 14POS 90DEG 5MM

0

0395221002

0395221002

Woodhead - Molex

TERM BLOCK HDR 2POS 90DEG 5MM

672

XW4M-34D2-V1DA

XW4M-34D2-V1DA

Omron Electronics Components

PLUG,DOUBLE-ROW,STRAIGHT,GOLD,TH

0

1757174

1757174

Phoenix Contact

TERM BLOCK PLUG 18POS STR 5.08MM

4650

1762082001

1762082001

Weidmuller

TERM BLOCK HDR 10POS 90DEG 3.5MM

0

ELFA16110

ELFA16110

Socapex (Amphenol Pcd)

TERM BLOCK HDR 16POS 90DEG 5MM

82

XW4M-05D1-V1DS

XW4M-05D1-V1DS

Omron Electronics Components

PLUG,SINGLE-ROW,STRAIGHT,TIN REF

0

ASP0440322

ASP0440322

RIA Connect / METZ CONNECT

SPRING CLAMP TERMINAL BLOCK, PLU

322

0395300006

0395300006

Woodhead - Molex

TERM BLOCK PLUG 6POS STR 5.08MM

1329

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

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