Terminal Blocks - Headers, Plugs and Sockets

Image Part Number Description / PDF Quantity Rfq
OSTTT242180

OSTTT242180

On-Shore Technology, Inc.

TERM BLOCK PLUG 24POS 3.5MM

0

OSTTT130181

OSTTT130181

On-Shore Technology, Inc.

TERM BLOCK PLUG 13POS 90DEG 5MM

0

OSTTS16515C

OSTTS16515C

On-Shore Technology, Inc.

TERM BLOCK PLUG 16POS 5.08MM

0

OSTOQ08A551

OSTOQ08A551

On-Shore Technology, Inc.

TERM BLOCK HDR 8POS 90DEG 7.5MM

0

OSTEZ147152

OSTEZ147152

On-Shore Technology, Inc.

TERM BLOCK PLUG 14POS STR 5MM

0

OSTOQ147550

OSTOQ147550

On-Shore Technology, Inc.

TERM BLOCK HDR 14POS VERT 5MM

0

OSTVO221250

OSTVO221250

On-Shore Technology, Inc.

TERM BLOCK HDR 22POS VERT 3.5MM

0

OSTVF227050

OSTVF227050

On-Shore Technology, Inc.

TERM BLOCK HDR 22POS VERT 5MM

0

OSTVL201251

OSTVL201251

On-Shore Technology, Inc.

TERM BLOCK HDR 20POS 90DEG 3.5MM

0

OSTVK031150

OSTVK031150

On-Shore Technology, Inc.

TERM BLOCK HDR 3POS 45DEG 3.5MM

0

OSTVM107550

OSTVM107550

On-Shore Technology, Inc.

TERM BLOCK PLUG 10POS STR 5MM

0

OSTVR245153

OSTVR245153

On-Shore Technology, Inc.

TERM BLOCK PLUG 24POS STR 5.08MM

0

OSTTY110100

OSTTY110100

On-Shore Technology, Inc.

TERM BLOCK PLUG 11POS 90DEG 5MM

0

OSTV7135150

OSTV7135150

On-Shore Technology, Inc.

TERM BLOCK HDR 13POS VERT 5.08MM

0

OSTHW205053

OSTHW205053

On-Shore Technology, Inc.

TERM BLOCK PLUG 20POS STR 5.08MM

0

OSTOQ021250

OSTOQ021250

On-Shore Technology, Inc.

TERM BLOCK HDR 2POS VERT 3.5MM

0

OSTVL183250

OSTVL183250

On-Shore Technology, Inc.

TERM BLOCK HDR 18POS VERT 3.81MM

0

OSTTS18315D

OSTTS18315D

On-Shore Technology, Inc.

TERM BLOCK PLUG 18POS 3.81MM

0

OSTVL061150

OSTVL061150

On-Shore Technology, Inc.

TERM BLOCK HDR 6POS VERT 3.5MM

0

OSTNR241100

OSTNR241100

On-Shore Technology, Inc.

3.5MM TERM BLOCK HEADER W/ FLANG

60

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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