Terminal Blocks - Headers, Plugs and Sockets

Image Part Number Description / PDF Quantity Rfq
OSTTS08715C

OSTTS08715C

On-Shore Technology, Inc.

TERM BLOCK PLUG 8POS 90DEG 5MM

0

OSTTS07715C

OSTTS07715C

On-Shore Technology, Inc.

TERM BLOCK PLUG 7POS 90DEG 5MM

0

OSTVO063250

OSTVO063250

On-Shore Technology, Inc.

TERM BLOCK HDR 6POS VERT 3.81MM

0

OSTVE203050

OSTVE203050

On-Shore Technology, Inc.

TERM BLOCK HDR 20POS VERT 3.81MM

0

OSTVL06B150

OSTVL06B150

On-Shore Technology, Inc.

TERM BLOCK HDR 6POS VERT 2.5MM

0

OSTVC240050

OSTVC240050

On-Shore Technology, Inc.

TERM BLOCK HDR 24POS 7.62MM

0

OSTOQ060050

OSTOQ060050

On-Shore Technology, Inc.

TERM BLOCK HDR 6POS VERT 7.62MM

0

OSTVM247552

OSTVM247552

On-Shore Technology, Inc.

TERM BLOCK PLUG 24POS STR 5MM

0

OSTOQ18A051

OSTOQ18A051

On-Shore Technology, Inc.

TERM BLOCK HDR 18POS 90DEG 7.5MM

0

OSTOQ076401

OSTOQ076401

On-Shore Technology, Inc.

TERM BLOCK HDR 7POS

0

OSTOQ187550

OSTOQ187550

On-Shore Technology, Inc.

TERM BLOCK HDR 18POS VERT 5MM

0

OSTVL243151

OSTVL243151

On-Shore Technology, Inc.

TERM BLOCK HDR 24POS 3.81MM

0

OSTOQ13A050

OSTOQ13A050

On-Shore Technology, Inc.

TERM BLOCK HDR 13POS VERT 7.5MM

0

OSTVK187250

OSTVK187250

On-Shore Technology, Inc.

TERM BLOCK HDR 18POS 45DEG 5MM

0

OSTVR045151

OSTVR045151

On-Shore Technology, Inc.

TERM BLOCK PLUG 4POS STR 5.08MM

0

OSTVK071250

OSTVK071250

On-Shore Technology, Inc.

TERM BLOCK HDR 7POS 45DEG 3.5MM

0

ED130/3DSDG

ED130/3DSDG

On-Shore Technology, Inc.

TERM BLOCK PLUG 3POS 90DEG 5MM

0

OSTTT170181

OSTTT170181

On-Shore Technology, Inc.

TERM BLOCK PLUG 17POS 90DEG 5MM

0

OSTVF047250

OSTVF047250

On-Shore Technology, Inc.

TERM BLOCK HDR 4POS VERT 5MM

0

OSTHI200051

OSTHI200051

On-Shore Technology, Inc.

TERM BLOCK PLUG 20POS STR 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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