Terminal Blocks - Headers, Plugs and Sockets

Image Part Number Description / PDF Quantity Rfq
OSTOQ080551

OSTOQ080551

On-Shore Technology, Inc.

TERM BLOCK HDR 8POS 90DEG 7.62MM

0

OSTOQ213550

OSTOQ213550

On-Shore Technology, Inc.

TERM BLOCK HDR 21POS VERT 3.81MM

0

OSTVL161251

OSTVL161251

On-Shore Technology, Inc.

TERM BLOCK HDR 16POS 90DEG 3.5MM

0

OSTEV086150

OSTEV086150

On-Shore Technology, Inc.

TERM BLOCK PLUG 8POS STR 10.16MM

0

OSTVF167250

OSTVF167250

On-Shore Technology, Inc.

TERM BLOCK HDR 16POS VERT 5MM

0

OSTHW133050

OSTHW133050

On-Shore Technology, Inc.

TERM BLOCK PLUG 13POS STR 3.81MM

0

OSTEX210000

OSTEX210000

On-Shore Technology, Inc.

TERM BLOCK HDR 21POS VERT 5MM

0

OSTOP192B01

OSTOP192B01

On-Shore Technology, Inc.

TERM BLOCK HDR 19POS VERT 3.5MM

0

OSTTS14315B

OSTTS14315B

On-Shore Technology, Inc.

TERM BLOCK PLUG 14POS 3.81MM

0

OSTEV156151

OSTEV156151

On-Shore Technology, Inc.

TERM BLOCK PLUG 15POS 10.16MM

0

OSTVD113152

OSTVD113152

On-Shore Technology, Inc.

TERM BLOCK PLUG 11POS STR 3.81MM

0

OSTVR175151

OSTVR175151

On-Shore Technology, Inc.

TERM BLOCK PLUG 17POS STR 5.08MM

0

OSTOQ067051

OSTOQ067051

On-Shore Technology, Inc.

TERM BLOCK HDR 6POS 90DEG 5MM

0

EDSTL955/12-OE

EDSTL955/12-OE

On-Shore Technology, Inc.

TERM BLOCK HDR 12POS VERT 5MM

0

OSTOQ241550

OSTOQ241550

On-Shore Technology, Inc.

TERM BLOCK HDR 24POS VERT 3.5MM

0

OSTVL245150

OSTVL245150

On-Shore Technology, Inc.

TERM BLOCK HDR 24POS VERT 5.08MM

0

OSTVM105552

OSTVM105552

On-Shore Technology, Inc.

TERM BLOCK PLUG 10POS STR 5.08MM

0

OSTVF225051

OSTVF225051

On-Shore Technology, Inc.

TERM BLOCK HDR 22POS 5.08MM

0

OSTTJ080150

OSTTJ080150

On-Shore Technology, Inc.

TERM BLOCK PLUG 8POS STR 7.62MM

0

OSTOQ117050

OSTOQ117050

On-Shore Technology, Inc.

TERM BLOCK HDR 11POS VERT 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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