Terminal Blocks - Headers, Plugs and Sockets

Image Part Number Description / PDF Quantity Rfq
EDZ950/24

EDZ950/24

On-Shore Technology, Inc.

TERM BLOCK PLUG 24POS STR 5.08MM

74

EDSTLZ960/6

EDSTLZ960/6

On-Shore Technology, Inc.

TERM BLOCK HDR 6POS 90DEG 7.62MM

0

EDSTL950/9

EDSTL950/9

On-Shore Technology, Inc.

TERM BLOCK HDR 9POS 90DEG 5MM

38

EDSTLZ955/10

EDSTLZ955/10

On-Shore Technology, Inc.

TERM BLOCK HDR 10POS VERT 5.08MM

281

EDSTLZ960/4

EDSTLZ960/4

On-Shore Technology, Inc.

TERM BLOCK HDR 4POS 90DEG 7.62MM

100

OSTTJ0911530

OSTTJ0911530

On-Shore Technology, Inc.

TERM BLOCK PLUG 9POS STR 3.5MM

0

EDSTL130/14

EDSTL130/14

On-Shore Technology, Inc.

TERM BLOCK HDR 14POS VERT 5MM

0

EDZ960/4

EDZ960/4

On-Shore Technology, Inc.

TERM BLOCK PLUG 4POS STR 7.62MM

0

EDZ1200/18

EDZ1200/18

On-Shore Technology, Inc.

TERM BLOCK PLUG 18POS STR 5.08MM

0

EDSTLZ990/20

EDSTLZ990/20

On-Shore Technology, Inc.

TERM BLOCK HDR 20POS 5.08MM

0

OSTTJ055152

OSTTJ055152

On-Shore Technology, Inc.

TERM BLOCK PLUG 5POS STR 5.08MM

121

OSTOQ040150

OSTOQ040150

On-Shore Technology, Inc.

TERM BLOCK HDR 4POS VERT 7.62MM

0

OSTTJ0831530

OSTTJ0831530

On-Shore Technology, Inc.

TERM BLOCK PLUG 8POS STR 3.81MM

8509

ED1100/4

ED1100/4

On-Shore Technology, Inc.

TERM BLOCK PLUG 4POS 90DEG 5MM

47

EDZ1200/11

EDZ1200/11

On-Shore Technology, Inc.

TERM BLOCK PLUG 11POS STR 5.08MM

0

EDZ1110/6

EDZ1110/6

On-Shore Technology, Inc.

TERM BLOCK PLUG 6POS 5.08MM

23

ED1100/6

ED1100/6

On-Shore Technology, Inc.

TERM BLOCK PLUG 6POS 90DEG 5MM

0

OSTOQ067150

OSTOQ067150

On-Shore Technology, Inc.

TERM BLOCK HDR 6POS VERT 5MM

0

OSTOQ045350

OSTOQ045350

On-Shore Technology, Inc.

TERM BLOCK HDR 4POS VERT 5.08MM

786

OSTTJ125153

OSTTJ125153

On-Shore Technology, Inc.

TERM BLOCK PLUG 12POS STR 5.08MM

807

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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