Terminal Blocks - Headers, Plugs and Sockets

Image Part Number Description / PDF Quantity Rfq
OSTTJ035152

OSTTJ035152

On-Shore Technology, Inc.

TERM BLOCK PLUG 3POS STR 5.08MM

181

ED130/2DS

ED130/2DS

On-Shore Technology, Inc.

TERM BLOCK PLUG 2POS 90DEG 5MM

2575

OSTTS02315B

OSTTS02315B

On-Shore Technology, Inc.

TERM BLOCK PLUG 2POS 3.81MM

681

EDSTLZ960/9

EDSTLZ960/9

On-Shore Technology, Inc.

TERM BLOCK HDR 9POS 90DEG 7.62MM

0

EDSTL955/12

EDSTL955/12

On-Shore Technology, Inc.

TERM BLOCK HDR 12POS VERT 5MM

115

EDSTLZ955/2

EDSTLZ955/2

On-Shore Technology, Inc.

TERM BLOCK HDR 2POS VERT 5.08MM

5040

ED950/10

ED950/10

On-Shore Technology, Inc.

TERM BLOCK PLUG 10POS STR 5MM

0

OSTOQ063250

OSTOQ063250

On-Shore Technology, Inc.

TERM BLOCK HDR 6POS VERT 3.81MM

6813

EDZ1110/14

EDZ1110/14

On-Shore Technology, Inc.

TERM BLOCK PLUG 14POS 5.08MM

90

OSTVL121251

OSTVL121251

On-Shore Technology, Inc.

TERM BLOCK HDR 12POS 90DEG 3.5MM

0

OSTTJ0611530

OSTTJ0611530

On-Shore Technology, Inc.

TERM BLOCK PLUG 6POS STR 3.5MM

565

OSTTS10315B

OSTTS10315B

On-Shore Technology, Inc.

TERM BLOCK PLUG 10POS 3.81MM

9

EDSTLZ1555/6

EDSTLZ1555/6

On-Shore Technology, Inc.

TERM BLOCK HDR 6POS VERT 3.81MM

1048

EDSTLZ1550/11

EDSTLZ1550/11

On-Shore Technology, Inc.

TERM BLOCK HDR 11POS 3.81MM

79

ED951/7

ED951/7

On-Shore Technology, Inc.

TERM BLOCK PLUG 7POS STR 5MM

0

OSTTH030160

OSTTH030160

On-Shore Technology, Inc.

TERM BLOCK PLUG 3POS 90DEG 5MM

47138

OSTTS09315B

OSTTS09315B

On-Shore Technology, Inc.

TERM BLOCK PLUG 9POS 3.81MM

0

EDSTL130/19

EDSTL130/19

On-Shore Technology, Inc.

TERM BLOCK HDR 19POS VERT 5MM

0

OSTTJ107150

OSTTJ107150

On-Shore Technology, Inc.

TERM BLOCK PLUG 10POS STR 5MM

0

EDSTLZ1550/8

EDSTLZ1550/8

On-Shore Technology, Inc.

TERM BLOCK HDR 8POS 90DEG 3.81MM

577

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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