Terminal Blocks - Headers, Plugs and Sockets

Image Part Number Description / PDF Quantity Rfq
OSTOP190000

OSTOP190000

On-Shore Technology, Inc.

TERM BLOCK HDR 19POS VERT 5MM

0

OSTHI110051

OSTHI110051

On-Shore Technology, Inc.

TERM BLOCK PLUG 11POS STR 5MM

0

OSTVO203250

OSTVO203250

On-Shore Technology, Inc.

TERM BLOCK HDR 20POS VERT 3.81MM

0

OSTOQ190150

OSTOQ190150

On-Shore Technology, Inc.

TERM BLOCK HDR 19POS VERT 7.62MM

0

OSTOQ20B151

OSTOQ20B151

On-Shore Technology, Inc.

TERM BLOCK HDR 20POS 90DEG 2.5MM

0

OSTOQ163551

OSTOQ163551

On-Shore Technology, Inc.

TERM BLOCK HDR 16POS 3.81MM

0

OSTTS07015A

OSTTS07015A

On-Shore Technology, Inc.

TERM BLOCK PLUG 7POS 7.62MM

0

OSTVM145550

OSTVM145550

On-Shore Technology, Inc.

TERM BLOCK PLUG 14POS STR 5.08MM

0

OSTTS24A15A

OSTTS24A15A

On-Shore Technology, Inc.

TERM BLOCK PLUG 24POS 7.5MM

0

OSTOQ053551

OSTOQ053551

On-Shore Technology, Inc.

TERM BLOCK HDR 5POS 90DEG 3.81MM

0

OSTEV086151

OSTEV086151

On-Shore Technology, Inc.

TERM BLOCK PLUG 8POS STR 10.16MM

0

OSTOQ087551

OSTOQ087551

On-Shore Technology, Inc.

TERM BLOCK HDR 8POS 90DEG 5MM

0

OSTEM097152

OSTEM097152

On-Shore Technology, Inc.

TERM BLOCK PLUG 9POS 225DEG 5MM

0

OSTEZ245150

OSTEZ245150

On-Shore Technology, Inc.

TERM BLOCK PLUG 24POS STR 5.08MM

0

OSTTJ105152

OSTTJ105152

On-Shore Technology, Inc.

TERM BLOCK PLUG 10POS STR 5.08MM

0

OSTVD093150

OSTVD093150

On-Shore Technology, Inc.

TERM BLOCK PLUG 9POS STR 3.81MM

0

OSTTS08515D

OSTTS08515D

On-Shore Technology, Inc.

TERM BLOCK PLUG 8POS 5.08MM

0

OSTOP212200

OSTOP212200

On-Shore Technology, Inc.

TERM BLOCK HDR 21POS VERT 3.5MM

0

OSTOQ095450

OSTOQ095450

On-Shore Technology, Inc.

TERM BLOCK HDR 9POS VERT 5.08MM

0

OSTEZ057150

OSTEZ057150

On-Shore Technology, Inc.

TERM BLOCK PLUG 5POS 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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