Terminal Blocks - Headers, Plugs and Sockets

Image Part Number Description / PDF Quantity Rfq
OSTV7095151

OSTV7095151

On-Shore Technology, Inc.

TERM BLOCK HDR 9POS 90DEG 5.08MM

0

OSTVM081550

OSTVM081550

On-Shore Technology, Inc.

TERM BLOCK PLUG 8POS STR 3.5MM

0

OSTVE143250

OSTVE143250

On-Shore Technology, Inc.

TERM BLOCK HDR 14POS VERT 3.81MM

0

OSTV7093250

OSTV7093250

On-Shore Technology, Inc.

TERM BLOCK HDR 9POS VERT 3.81MM

0

OSTVM075550

OSTVM075550

On-Shore Technology, Inc.

TERM BLOCK PLUG 7POS STR 5.08MM

0

OSTVM205551

OSTVM205551

On-Shore Technology, Inc.

TERM BLOCK PLUG 20POS STR 5.08MM

0

OSTOQ135350

OSTOQ135350

On-Shore Technology, Inc.

TERM BLOCK HDR 13POS VERT 5.08MM

0

OSTVE133051

OSTVE133051

On-Shore Technology, Inc.

TERM BLOCK HDR 13POS 3.81MM

0

OSTOQ120550

OSTOQ120550

On-Shore Technology, Inc.

TERM BLOCK HDR 12POS VERT 7.62MM

0

OSTTS08A15A

OSTTS08A15A

On-Shore Technology, Inc.

TERM BLOCK PLUG 8POS 90DEG 7.5MM

0

OSTTJ050152

OSTTJ050152

On-Shore Technology, Inc.

TERM BLOCK PLUG 5POS STR 7.62MM

0

OSTVR145152

OSTVR145152

On-Shore Technology, Inc.

TERM BLOCK PLUG 14POS STR 5.08MM

0

OSTVK155150

OSTVK155150

On-Shore Technology, Inc.

TERM BLOCK HDR 15POS 5.08MM

0

OSTOQ220550

OSTOQ220550

On-Shore Technology, Inc.

TERM BLOCK HDR 22POS VERT 7.62MM

0

OSTOQ243251

OSTOQ243251

On-Shore Technology, Inc.

TERM BLOCK HDR 24POS 3.81MM

0

OSTV7115150

OSTV7115150

On-Shore Technology, Inc.

TERM BLOCK HDR 11POS VERT 5.08MM

0

OSTVM075552

OSTVM075552

On-Shore Technology, Inc.

TERM BLOCK PLUG 7POS STR 5.08MM

0

OSTHW085050

OSTHW085050

On-Shore Technology, Inc.

TERM BLOCK PLUG 8POS STR 5.08MM

0

OSTVF105251

OSTVF105251

On-Shore Technology, Inc.

TERM BLOCK HDR 10POS 5.08MM

0

OSTOQ240551

OSTOQ240551

On-Shore Technology, Inc.

TERM BLOCK HDR 24POS 7.62MM

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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