Terminal Blocks - Headers, Plugs and Sockets

Image Part Number Description / PDF Quantity Rfq
OSTOQ18A550

OSTOQ18A550

On-Shore Technology, Inc.

TERM BLOCK HDR 18POS VERT 7.5MM

0

OSTVM077552

OSTVM077552

On-Shore Technology, Inc.

TERM BLOCK PLUG 7POS STR 5MM

0

OSTVK113150

OSTVK113150

On-Shore Technology, Inc.

TERM BLOCK HDR 11POS 3.81MM

0

OSTOQ09A151

OSTOQ09A151

On-Shore Technology, Inc.

TERM BLOCK HDR 9POS 90DEG 7.5MM

0

OSTVF147150

OSTVF147150

On-Shore Technology, Inc.

TERM BLOCK HDR 14POS VERT 5MM

0

OSTTS19A15A

OSTTS19A15A

On-Shore Technology, Inc.

TERM BLOCK PLUG 19POS 7.5MM

0

OSTVM065553

OSTVM065553

On-Shore Technology, Inc.

TERM BLOCK PLUG 6POS STR 5.08MM

0

OSTOQ06A151

OSTOQ06A151

On-Shore Technology, Inc.

TERM BLOCK HDR 6POS 90DEG 7.5MM

0

OSTTS20015C

OSTTS20015C

On-Shore Technology, Inc.

TERM BLOCK PLUG 20POS 7.62MM

0

OSTVM197552

OSTVM197552

On-Shore Technology, Inc.

TERM BLOCK PLUG 19POS STR 5MM

0

OSTTS14715A

OSTTS14715A

On-Shore Technology, Inc.

TERM BLOCK PLUG 14POS 90DEG 5MM

0

OSTV7225250

OSTV7225250

On-Shore Technology, Inc.

TERM BLOCK HDR 22POS VERT 5.08MM

0

OSTVO241151

OSTVO241151

On-Shore Technology, Inc.

TERM BLOCK HDR 24POS 90DEG 3.5MM

0

OSTVM193552

OSTVM193552

On-Shore Technology, Inc.

TERM BLOCK PLUG 19POS STR 3.81MM

0

OSTV8135150

OSTV8135150

On-Shore Technology, Inc.

TERM BLOCK PLUG 13POS STR 5.08MM

0

OSTVM057552

OSTVM057552

On-Shore Technology, Inc.

TERM BLOCK PLUG 5POS STR 5MM

0

OSTEM065150

OSTEM065150

On-Shore Technology, Inc.

TERM BLOCK PLUG 6POS 5.08MM

0

OSTV7185251

OSTV7185251

On-Shore Technology, Inc.

TERM BLOCK HDR 18POS 5.08MM

0

OSTV7223150

OSTV7223150

On-Shore Technology, Inc.

TERM BLOCK HDR 22POS VERT 3.81MM

0

OSTOQ06A050

OSTOQ06A050

On-Shore Technology, Inc.

TERM BLOCK HDR 6POS VERT 7.5MM

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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