Terminal Blocks - Headers, Plugs and Sockets

Image Part Number Description / PDF Quantity Rfq
EDSTLZ990/21

EDSTLZ990/21

On-Shore Technology, Inc.

TERM BLOCK HDR 21POS 5.08MM

0

EDZ1550/2

EDZ1550/2

On-Shore Technology, Inc.

TERM BLOCK PLUG 2POS STR 3.81MM

3374

OSTOQ0354501

OSTOQ0354501

On-Shore Technology, Inc.

TERM BLOCK HDR 3POS VERT 5.08MM

0

OSTTS09515A

OSTTS09515A

On-Shore Technology, Inc.

TERM BLOCK PLUG 9POS 5.08MM

0

EDSTL130/10

EDSTL130/10

On-Shore Technology, Inc.

TERM BLOCK HDR 10POS VERT 5MM

1497

EDSTLZ955/11

EDSTLZ955/11

On-Shore Technology, Inc.

TERM BLOCK HDR 11POS VERT 5.08MM

0

EDSTLZ990/22

EDSTLZ990/22

On-Shore Technology, Inc.

TERM BLOCK HDR 22POS 5.08MM

0

ED130/10DS

ED130/10DS

On-Shore Technology, Inc.

TERM BLOCK PLUG 10POS 90DEG 5MM

0

OSTTJ167150

OSTTJ167150

On-Shore Technology, Inc.

TERM BLOCK PLUG 16POS STR 5MM

536

EDSTLZ955/10-OE

EDSTLZ955/10-OE

On-Shore Technology, Inc.

TERM BLOCK HDR 10POS VERT 5.08MM

0

EDSTLZ955/7

EDSTLZ955/7

On-Shore Technology, Inc.

TERM BLOCK HDR 7POS VERT 5.08MM

693

EDSTLZ955/9

EDSTLZ955/9

On-Shore Technology, Inc.

TERM BLOCK HDR 9POS VERT 5.08MM

760

OSTOQ035451

OSTOQ035451

On-Shore Technology, Inc.

TERM BLOCK HDR 3POS 90DEG 5.08MM

1305

EDSTLZ955/8-OE

EDSTLZ955/8-OE

On-Shore Technology, Inc.

TERM BLOCK HDR 8POS VERT 5.08MM

0

EDSTLZ960/2

EDSTLZ960/2

On-Shore Technology, Inc.

TERM BLOCK HDR 2POS 90DEG 7.62MM

578

EDSTLZ990/14

EDSTLZ990/14

On-Shore Technology, Inc.

TERM BLOCK HDR 14POS 5.08MM

0

OSTTJ0411530

OSTTJ0411530

On-Shore Technology, Inc.

TERM BLOCK PLUG 4POS STR 3.5MM

373

OSTOQ125450

OSTOQ125450

On-Shore Technology, Inc.

TERM BLOCK HDR 12POS VERT 5.08MM

216

EDSTLZ951/6

EDSTLZ951/6

On-Shore Technology, Inc.

TERM BLOCK HDR 6POS 90DEG 5.08MM

0

EDSTLZ955/4

EDSTLZ955/4

On-Shore Technology, Inc.

TERM BLOCK HDR 4POS VERT 5.08MM

324

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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