Terminal Blocks - Headers, Plugs and Sockets

Image Part Number Description / PDF Quantity Rfq
OSTTJ140150

OSTTJ140150

On-Shore Technology, Inc.

TERM BLOCK PLUG 14POS STR 7.62MM

0

OSTVK153150

OSTVK153150

On-Shore Technology, Inc.

TERM BLOCK HDR 15POS 3.81MM

0

OSTVO243151

OSTVO243151

On-Shore Technology, Inc.

TERM BLOCK HDR 24POS 3.81MM

0

OSTVK101150

OSTVK101150

On-Shore Technology, Inc.

TERM BLOCK HDR 10POS 45DEG 3.5MM

0

OSTVE023251

OSTVE023251

On-Shore Technology, Inc.

TERM BLOCK HDR 2POS 90DEG 3.81MM

0

OSTVR245150

OSTVR245150

On-Shore Technology, Inc.

TERM BLOCK PLUG 24POS STR 5.08MM

0

OSTVF207251

OSTVF207251

On-Shore Technology, Inc.

TERM BLOCK HDR 20POS 90DEG 5MM

0

EDSTLZ1590/15

EDSTLZ1590/15

On-Shore Technology, Inc.

TERM BLOCK HDR 15POS 3.81MM

0

OSTTS18515D

OSTTS18515D

On-Shore Technology, Inc.

TERM BLOCK PLUG 18POS 5.08MM

0

OSTOP180200

OSTOP180200

On-Shore Technology, Inc.

TERM BLOCK HDR 18POS VERT 5MM

0

OSTEM18A152

OSTEM18A152

On-Shore Technology, Inc.

TERM BLOCK PLUG 18POS 7.5MM

0

OSTVE073251

OSTVE073251

On-Shore Technology, Inc.

TERM BLOCK HDR 7POS 90DEG 3.81MM

0

OSTOQ147150

OSTOQ147150

On-Shore Technology, Inc.

TERM BLOCK HDR 14POS VERT 5MM

0

OSTOP062B01

OSTOP062B01

On-Shore Technology, Inc.

TERM BLOCK HDR 6POS VERT 3.5MM

0

OSTVK203250

OSTVK203250

On-Shore Technology, Inc.

TERM BLOCK HDR 20POS 3.81MM

0

OSTOQ103551

OSTOQ103551

On-Shore Technology, Inc.

TERM BLOCK HDR 10POS 3.81MM

0

OSTTS16515D

OSTTS16515D

On-Shore Technology, Inc.

TERM BLOCK PLUG 16POS 5.08MM

0

OSTTS03A15A

OSTTS03A15A

On-Shore Technology, Inc.

TERM BLOCK PLUG 3POS 90DEG 7.5MM

0

OSTVL227251

OSTVL227251

On-Shore Technology, Inc.

TERM BLOCK HDR 22POS 90DEG 5MM

0

OSTOQ07A150

OSTOQ07A150

On-Shore Technology, Inc.

TERM BLOCK HDR 7POS 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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