Terminal Blocks - Headers, Plugs and Sockets

Image Part Number Description / PDF Quantity Rfq
OSTVE053250

OSTVE053250

On-Shore Technology, Inc.

TERM BLOCK HDR 5POS VERT 3.81MM

0

OSTVM155551

OSTVM155551

On-Shore Technology, Inc.

TERM BLOCK PLUG 15POS STR 5.08MM

0

OSTVL24B150

OSTVL24B150

On-Shore Technology, Inc.

TERM BLOCK HDR 24POS VERT 2.5MM

0

OSTOQ205350

OSTOQ205350

On-Shore Technology, Inc.

TERM BLOCK HDR 20POS VERT 5.08MM

0

OSTVK073250

OSTVK073250

On-Shore Technology, Inc.

TERM BLOCK HDR 7POS 45DEG 3.81MM

0

OSTV7135251

OSTV7135251

On-Shore Technology, Inc.

TERM BLOCK HDR 13POS 5.08MM

0

OSTTY080100

OSTTY080100

On-Shore Technology, Inc.

TERM BLOCK PLUG 8POS 90DEG 5MM

0

OSTOQ203250

OSTOQ203250

On-Shore Technology, Inc.

TERM BLOCK HDR 20POS VERT 3.81MM

0

OSTOQ117150

OSTOQ117150

On-Shore Technology, Inc.

TERM BLOCK HDR 11POS VERT 5MM

0

OSTTT110181

OSTTT110181

On-Shore Technology, Inc.

TERM BLOCK PLUG 11POS 90DEG 5MM

0

OSTOQ113551

OSTOQ113551

On-Shore Technology, Inc.

TERM BLOCK HDR 11POS 3.81MM

0

OSTVD033152

OSTVD033152

On-Shore Technology, Inc.

TERM BLOCK PLUG 3POS STR 3.81MM

0

OSTTS23115B

OSTTS23115B

On-Shore Technology, Inc.

TERM BLOCK PLUG 23POS 3.5MM

0

EDSTLZ1590/13

EDSTLZ1590/13

On-Shore Technology, Inc.

TERM BLOCK HDR 13POS 3.81MM

0

OSTVK093150

OSTVK093150

On-Shore Technology, Inc.

TERM BLOCK HDR 9POS 45DEG 3.81MM

0

OSTVK027150

OSTVK027150

On-Shore Technology, Inc.

TERM BLOCK HDR 2POS 45DEG 5MM

0

OSTVK055150

OSTVK055150

On-Shore Technology, Inc.

TERM BLOCK HDR 5POS 45DEG 5.08MM

0

OSTOQ097551

OSTOQ097551

On-Shore Technology, Inc.

TERM BLOCK HDR 9POS 90DEG 5MM

0

OSTOQ247551

OSTOQ247551

On-Shore Technology, Inc.

TERM BLOCK HDR 24POS 90DEG 5MM

0

OSTEV216151

OSTEV216151

On-Shore Technology, Inc.

TERM BLOCK PLUG 21POS 10.16MM

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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