Terminal Blocks - Headers, Plugs and Sockets

Image Part Number Description / PDF Quantity Rfq
EDZ1710/5

EDZ1710/5

On-Shore Technology, Inc.

TERM BLOCK PLUG 5POS 3.81MM

2

OSTTS10315A

OSTTS10315A

On-Shore Technology, Inc.

TERM BLOCK PLUG 10POS 3.81MM

1414

EDSTL130/15

EDSTL130/15

On-Shore Technology, Inc.

TERM BLOCK HDR 15POS VERT 5MM

0

OSTTH080160

OSTTH080160

On-Shore Technology, Inc.

TERM BLOCK PLUG 8POS 90DEG 5MM

0

EDSTL950/24

EDSTL950/24

On-Shore Technology, Inc.

TERM BLOCK HDR 24POS 90DEG 5MM

0

EDSTLZ956/4

EDSTLZ956/4

On-Shore Technology, Inc.

TERM BLOCK HDR 4POS VERT 5.08MM

94

OSTTS07315A

OSTTS07315A

On-Shore Technology, Inc.

TERM BLOCK PLUG 7POS 3.81MM

0

EDZ1200/5

EDZ1200/5

On-Shore Technology, Inc.

TERM BLOCK PLUG 5POS STR 5.08MM

0

ED1100/12

ED1100/12

On-Shore Technology, Inc.

TERM BLOCK PLUG 12POS 90DEG 5MM

0

EDSTL130/06

EDSTL130/06

On-Shore Technology, Inc.

TERM BLOCK HDR 6POS VERT 5MM

1622

EDSTL130/13

EDSTL130/13

On-Shore Technology, Inc.

TERM BLOCK HDR 13POS VERT 5MM

0

EDZ1200/3

EDZ1200/3

On-Shore Technology, Inc.

TERM BLOCK PLUG 3POS STR 5.08MM

0

OSTOQ085450

OSTOQ085450

On-Shore Technology, Inc.

TERM BLOCK HDR 8POS VERT 5.08MM

2130

EDZ951/9

EDZ951/9

On-Shore Technology, Inc.

TERM BLOCK PLUG 9POS STR 5.08MM

50

EDSTLZ990/2

EDSTLZ990/2

On-Shore Technology, Inc.

TERM BLOCK HDR 2POS 45DEG 5.08MM

0

OSTOQ043251

OSTOQ043251

On-Shore Technology, Inc.

TERM BLOCK HDR 4POS 90DEG 3.81MM

955

EDSTLZ1555/4

EDSTLZ1555/4

On-Shore Technology, Inc.

TERM BLOCK HDR 4POS VERT 3.81MM

915

OSTTJ0331530

OSTTJ0331530

On-Shore Technology, Inc.

TERM BLOCK PLUG 3POS STR 3.81MM

3813

OSTV7203251

OSTV7203251

On-Shore Technology, Inc.

TERM BLOCK HDR 20POS 3.81MM

0

EDSTLZ950/4-OE

EDSTLZ950/4-OE

On-Shore Technology, Inc.

TERM BLOCK HDR 4POS 90DEG 5.08MM

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

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