Terminal Blocks - Headers, Plugs and Sockets

Image Part Number Description / PDF Quantity Rfq
OSTVF107251

OSTVF107251

On-Shore Technology, Inc.

TERM BLOCK HDR 10POS 90DEG 5MM

0

OSTOQ05A151

OSTOQ05A151

On-Shore Technology, Inc.

TERM BLOCK HDR 5POS 90DEG 7.5MM

0

EDSTLZ976/4

EDSTLZ976/4

On-Shore Technology, Inc.

TERM BLOCK HDR 8POS VERT 5.08MM

0

OSTTS21515A

OSTTS21515A

On-Shore Technology, Inc.

TERM BLOCK PLUG 21POS 5.08MM

0

OSTVK101250

OSTVK101250

On-Shore Technology, Inc.

TERM BLOCK HDR 10POS 45DEG 3.5MM

0

OSTEM055150

OSTEM055150

On-Shore Technology, Inc.

TERM BLOCK PLUG 5POS 5.08MM

0

EDSTLZ950/9-OE

EDSTLZ950/9-OE

On-Shore Technology, Inc.

TERM BLOCK HDR 9POS 90DEG 5.08MM

0

OSTOP110000

OSTOP110000

On-Shore Technology, Inc.

TERM BLOCK HDR 11POS VERT 5MM

0

OSTEO050102

OSTEO050102

On-Shore Technology, Inc.

TERM BLOCK PLUG 5POS 90DEG 5MM

0

OSTTH140160

OSTTH140160

On-Shore Technology, Inc.

TERM BLOCK PLUGGABLE PLUG DOVETA

0

OSTVW181000

OSTVW181000

On-Shore Technology, Inc.

TERM BLOCK PLUG 18POS STR 3.5MM

0

OSTVL145251

OSTVL145251

On-Shore Technology, Inc.

TERM BLOCK HDR 14POS 5.08MM

0

OSTVM025551

OSTVM025551

On-Shore Technology, Inc.

TERM BLOCK PLUG 2POS STR 5.08MM

0

OSTH415505B

OSTH415505B

On-Shore Technology, Inc.

TERM BLOCK PLUG 15POS 5.08MM

0

OSTVR235151

OSTVR235151

On-Shore Technology, Inc.

TERM BLOCK PLUG 23POS STR 5.08MM

0

OSTOP040F00

OSTOP040F00

On-Shore Technology, Inc.

TERM BLOCK HDR 4POS 90DEG 5MM

0

OSTOQ22B151

OSTOQ22B151

On-Shore Technology, Inc.

TERM BLOCK HDR 22POS 90DEG 2.5MM

0

OSTVL16B150

OSTVL16B150

On-Shore Technology, Inc.

TERM BLOCK HDR 16POS VERT 2.5MM

0

OSTTS10A15B

OSTTS10A15B

On-Shore Technology, Inc.

TERM BLOCK PLUG 10POS 7.5MM

0

OSTVR145151

OSTVR145151

On-Shore Technology, Inc.

TERM BLOCK PLUG 14POS STR 5.08MM

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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