Terminal Blocks - Headers, Plugs and Sockets

Image Part Number Description / PDF Quantity Rfq
1527110000

1527110000

Weidmuller

TERM BLOCK PLUG 9POS STR 5.08MM

49100

1630750000

1630750000

Weidmuller

TERM BLOCK HDR 6POS VERT 5.08MM

121

31049103

31049103

RIA Connect / METZ CONNECT

SCREW TYPE TERMINAL BLOCK, PLUG,

412

31041106

31041106

RIA Connect / METZ CONNECT

PIN HEADER, BACKWALL, VERTICAL,

21

1844304

1844304

Phoenix Contact

TERM BLOCK HDR 11POS 90DEG 3.5MM

765

691358710002

691358710002

Würth Elektronik Midcom

TERM BLOCK PLUG 2POS 5.08MM

0

1777183

1777183

Phoenix Contact

TERM BLOCK HDR 13POS VERT 5.08MM

58

OSTTS10715B

OSTTS10715B

On-Shore Technology, Inc.

TERM BLOCK PLUG 10POS 270DEG 5MM

0

1830428

1830428

Phoenix Contact

TERM BLOCK HDR 8POS VERT 3.81MM

345

OQ1271510000G

OQ1271510000G

Anytek (Amphenol Anytek)

TERM BLOCK HDR 12POS 90DEG 5MM

1738

284539-2

284539-2

TE Connectivity AMP Connectors

TERM BLOCK HDR 2POS 90DEG 3.5MM

3021

1043890000

1043890000

Weidmuller

TERM BLOCK PLUG 4POS STR 7.62MM

100

1862700

1862700

Phoenix Contact

TERM BLOCK HDR 15POS 3.81MM

0

0395200006

0395200006

Woodhead - Molex

TERM BLOCK PLUG 6POS STR 5MM

302

5441993

5441993

Phoenix Contact

TERM BLOCK HDR 3POS 90DEG 5.08MM

256

OSTOQ147151

OSTOQ147151

On-Shore Technology, Inc.

TERM BLOCK HDR 14POS 90DEG 5MM

442

ASP0440622

ASP0440622

RIA Connect / METZ CONNECT

SPRING CLAMP TERMINAL BLOCK, PLU

1155

796634-4

796634-4

TE Connectivity AMP Connectors

TERM BLOCK PLUG 4POS STR 5.08MM

2585

EDSTLZ955/5

EDSTLZ955/5

On-Shore Technology, Inc.

TERM BLOCK HDR 5POS VERT 5.08MM

676

EDZ950/3

EDZ950/3

On-Shore Technology, Inc.

TERM BLOCK PLUG 3POS STR 5.08MM

2298

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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