Terminal Blocks - Headers, Plugs and Sockets

Image Part Number Description / PDF Quantity Rfq
EDSTLZ965/9

EDSTLZ965/9

On-Shore Technology, Inc.

TERM BLOCK HDR 9POS VERT 7.62MM

0

OSTOQ167151

OSTOQ167151

On-Shore Technology, Inc.

TERM BLOCK HDR 16POS 90DEG 5MM

79

EDSTLZ960/5

EDSTLZ960/5

On-Shore Technology, Inc.

TERM BLOCK HDR 5POS 90DEG 7.62MM

0

EDSTLZ1550/6

EDSTLZ1550/6

On-Shore Technology, Inc.

TERM BLOCK HDR 6POS 90DEG 3.81MM

205

EDZ960/16

EDZ960/16

On-Shore Technology, Inc.

TERM BLOCK PLUG 16POS STR 7.62MM

0

OSTOQ027150

OSTOQ027150

On-Shore Technology, Inc.

TERM BLOCK HDR 2POS VERT 5MM

28

EDSTLZ1550/4

EDSTLZ1550/4

On-Shore Technology, Inc.

TERM BLOCK HDR 4POS 90DEG 3.81MM

1008

EDZ1100/5

EDZ1100/5

On-Shore Technology, Inc.

TERM BLOCK PLUG 5POS 5.08MM

51

EDZ950/9

EDZ950/9

On-Shore Technology, Inc.

TERM BLOCK PLUG 9POS STR 5.08MM

0

OSTTJ045153

OSTTJ045153

On-Shore Technology, Inc.

TERM BLOCK PLUG 4POS STR 5.08MM

7193

OSTOQ023250

OSTOQ023250

On-Shore Technology, Inc.

TERM BLOCK HDR 2POS VERT 3.81MM

20179

ED1110/5

ED1110/5

On-Shore Technology, Inc.

TERM BLOCK PLUG 5POS 270DEG 5MM

0

OSTOQ0554501

OSTOQ0554501

On-Shore Technology, Inc.

TERM BLOCK HDR 5POS VERT 5.08MM

0

OSTTJ145153

OSTTJ145153

On-Shore Technology, Inc.

TERM BLOCK PLUG 14POS STR 5.08MM

0

OSTOQ045351

OSTOQ045351

On-Shore Technology, Inc.

TERM BLOCK HDR 4POS 90DEG 5.08MM

158

OSTTH120160

OSTTH120160

On-Shore Technology, Inc.

TERM BLOCK PLUG 12POS 90DEG 5MM

68

EDSTLZ951/2

EDSTLZ951/2

On-Shore Technology, Inc.

TERM BLOCK HDR 2POS 90DEG 5.08MM

167

EDSTLZ1555/10

EDSTLZ1555/10

On-Shore Technology, Inc.

TERM BLOCK HDR 10POS VERT 3.81MM

676

OSTOQ050150

OSTOQ050150

On-Shore Technology, Inc.

TERM BLOCK HDR 5POS VERT 7.62MM

86

OSTOQ093250

OSTOQ093250

On-Shore Technology, Inc.

TERM BLOCK HDR 9POS VERT 3.81MM

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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