Terminal Blocks - Headers, Plugs and Sockets

Image Part Number Description / PDF Quantity Rfq
OSTTS05315A

OSTTS05315A

On-Shore Technology, Inc.

TERM BLOCK PLUG 5POS 3.81MM

0

ED130/3DS

ED130/3DS

On-Shore Technology, Inc.

TERM BLOCK PLUG 3POS 90DEG 5MM

1645

OSTTS04315A

OSTTS04315A

On-Shore Technology, Inc.

TERM BLOCK PLUG 4POS 3.81MM

270

EDSTL130/16

EDSTL130/16

On-Shore Technology, Inc.

TERM BLOCK HDR 16POS VERT 5MM

568

OSTTS08315B

OSTTS08315B

On-Shore Technology, Inc.

TERM BLOCK PLUG 8POS 3.81MM

45

EDSTL130/04

EDSTL130/04

On-Shore Technology, Inc.

TERM BLOCK HDR 4POS VERT 5MM

982

OSTTS23116C

OSTTS23116C

On-Shore Technology, Inc.

TERM BLOCK PLUG 23POS 3.5MM

0

OSTTS04315B

OSTTS04315B

On-Shore Technology, Inc.

TERM BLOCK PLUG 4POS 3.81MM

480

EDSTLZ956/9

EDSTLZ956/9

On-Shore Technology, Inc.

TERM BLOCK HDR 9POS VERT 5.08MM

18

ED130/6DS

ED130/6DS

On-Shore Technology, Inc.

TERM BLOCK PLUG 6POS 90DEG 5MM

223

EDSTLZ1550/16

EDSTLZ1550/16

On-Shore Technology, Inc.

TERM BLOCK HDR 16POS 3.81MM

15

EDZ1700/12

EDZ1700/12

On-Shore Technology, Inc.

TERM BLOCK PLUG 12POS 3.81MM

0

OSTTJ1411530

OSTTJ1411530

On-Shore Technology, Inc.

TERM BLOCK PLUG 14POS STR 3.5MM

0

EDZ1200/2

EDZ1200/2

On-Shore Technology, Inc.

TERM BLOCK PLUG 2POS STR 5.08MM

4

OSTTS08515A

OSTTS08515A

On-Shore Technology, Inc.

TERM BLOCK PLUG 8POS 5.08MM

389

OSTOQ047150

OSTOQ047150

On-Shore Technology, Inc.

TERM BLOCK HDR 4POS VERT 5MM

11882

EDSTL950/14

EDSTL950/14

On-Shore Technology, Inc.

TERM BLOCK HDR 14POS 90DEG 5MM

0

OSTOQ0754501

OSTOQ0754501

On-Shore Technology, Inc.

TERM BLOCK HDR 7POS VERT 5.08MM

0

EDSTL130/02

EDSTL130/02

On-Shore Technology, Inc.

TERM BLOCK HDR 2POS VERT 5MM

4525

OSTTJ0811530

OSTTJ0811530

On-Shore Technology, Inc.

TERM BLOCK PLUG 8POS STR 3.5MM

662

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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