Terminal Blocks - Headers, Plugs and Sockets

Image Part Number Description / PDF Quantity Rfq
EDZ1550/5

EDZ1550/5

On-Shore Technology, Inc.

TERM BLOCK PLUG 5POS STR 3.81MM

675

OSTOQ105451

OSTOQ105451

On-Shore Technology, Inc.

TERM BLOCK HDR 10POS 5.08MM

70

EDSTLZ990/19

EDSTLZ990/19

On-Shore Technology, Inc.

TERM BLOCK HDR 19POS 5.08MM

0

EDZ1550/10

EDZ1550/10

On-Shore Technology, Inc.

TERM BLOCK PLUG 10POS STR 3.81MM

532

OSTOP240200

OSTOP240200

On-Shore Technology, Inc.

TERM BLOCK HDR 24POS VERT 5MM

283

OSTTJ045152

OSTTJ045152

On-Shore Technology, Inc.

TERM BLOCK PLUG 4POS STR 5.08MM

0

OSTTJ0731530

OSTTJ0731530

On-Shore Technology, Inc.

TERM BLOCK PLUG 7POS STR 3.81MM

460

EDSTL951/5

EDSTL951/5

On-Shore Technology, Inc.

TERM BLOCK HDR 5POS 90DEG 5MM

0

EDSTL955/3

EDSTL955/3

On-Shore Technology, Inc.

TERM BLOCK HDR 3POS VERT 5MM

4094

EDSTL956/3

EDSTL956/3

On-Shore Technology, Inc.

TERM BLOCK HDR 3POS VERT 5MM

0

OSTTJ1631530

OSTTJ1631530

On-Shore Technology, Inc.

TERM BLOCK PLUG 16POS STR 3.81MM

605

OSTVF045151

OSTVF045151

On-Shore Technology, Inc.

TERM BLOCK HDR 4POS 90DEG 5.08MM

0

EDZ950/12

EDZ950/12

On-Shore Technology, Inc.

TERM BLOCK PLUG 12POS STR 5.08MM

517

EDZ1700/2

EDZ1700/2

On-Shore Technology, Inc.

TERM BLOCK PLUG 2POS 3.81MM

35

OSTOQ063251

OSTOQ063251

On-Shore Technology, Inc.

TERM BLOCK HDR 6POS 90DEG 3.81MM

3697

OSTVF065050

OSTVF065050

On-Shore Technology, Inc.

TERM BLOCK HDR 6POS VERT 5.08MM

0

EDZ1550/12

EDZ1550/12

On-Shore Technology, Inc.

TERM BLOCK PLUG 12POS STR 3.81MM

36

EDSTLZ965/7

EDSTLZ965/7

On-Shore Technology, Inc.

TERM BLOCK HDR 7POS VERT 7.62MM

100

EDZ1550/6

EDZ1550/6

On-Shore Technology, Inc.

TERM BLOCK PLUG 6POS STR 3.81MM

684

EDZ1710/8

EDZ1710/8

On-Shore Technology, Inc.

TERM BLOCK PLUG 8POS 3.81MM

294

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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