Terminal Blocks - Headers, Plugs and Sockets

Image Part Number Description / PDF Quantity Rfq
EDZ1110/7

EDZ1110/7

On-Shore Technology, Inc.

TERM BLOCK PLUG 7POS 5.08MM

7

OSTTS06315A

OSTTS06315A

On-Shore Technology, Inc.

TERM BLOCK PLUG 6POS 3.81MM

0

EDSTLZ1555/14

EDSTLZ1555/14

On-Shore Technology, Inc.

TERM BLOCK HDR 14POS VERT 3.81MM

60

EDSTLZ950/18

EDSTLZ950/18

On-Shore Technology, Inc.

TERM BLOCK HDR 18POS 5.08MM

13

OSTOQ121251

OSTOQ121251

On-Shore Technology, Inc.

TERM BLOCK HDR 12POS 90DEG 3.5MM

3914

EDZ1100/11

EDZ1100/11

On-Shore Technology, Inc.

TERM BLOCK PLUG 11POS 5.08MM

0

EDZ1200/14

EDZ1200/14

On-Shore Technology, Inc.

TERM BLOCK PLUG 14POS STR 5.08MM

0

EDZ1200/16

EDZ1200/16

On-Shore Technology, Inc.

TERM BLOCK PLUG 16POS STR 5.08MM

0

ED1110/9

ED1110/9

On-Shore Technology, Inc.

TERM BLOCK PLUG 9POS 270DEG 5MM

0

OSTTS03515B

OSTTS03515B

On-Shore Technology, Inc.

TERM BLOCK PLUG 3POS 5.08MM

1981

EDSTL955/5

EDSTL955/5

On-Shore Technology, Inc.

TERM BLOCK HDR 5POS VERT 5MM

268

ED3950/4

ED3950/4

On-Shore Technology, Inc.

TERM BLOCK PLUG 4POS STR 5MM

0

OSTVM085550

OSTVM085550

On-Shore Technology, Inc.

TERM BLOCK PLUG 8POS STR 5.08MM

0

OSTOQ195550

OSTOQ195550

On-Shore Technology, Inc.

TERM BLOCK HDR 19POS VERT 5.08MM

0

OSTOQ085350

OSTOQ085350

On-Shore Technology, Inc.

TERM BLOCK HDR 8POS VERT 5.08MM

0

OSTVM177550

OSTVM177550

On-Shore Technology, Inc.

TERM BLOCK PLUG 17POS STR 5MM

0

OSTTS19715A

OSTTS19715A

On-Shore Technology, Inc.

TERM BLOCK PLUG 19POS 90DEG 5MM

0

OSTOQ235550

OSTOQ235550

On-Shore Technology, Inc.

TERM BLOCK HDR 23POS VERT 5.08MM

0

OSTOQ12A051

OSTOQ12A051

On-Shore Technology, Inc.

TERM BLOCK HDR 12POS 90DEG 7.5MM

0

ED3950/7

ED3950/7

On-Shore Technology, Inc.

TERM BLOCK PLUG 7POS 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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