Terminal Blocks - Headers, Plugs and Sockets

Image Part Number Description / PDF Quantity Rfq
EDSTLZ1550/3

EDSTLZ1550/3

On-Shore Technology, Inc.

TERM BLOCK HDR 3POS 90DEG 3.81MM

0

ED950/7

ED950/7

On-Shore Technology, Inc.

TERM BLOCK PLUG 7POS STR 5MM

513

ED1100/8

ED1100/8

On-Shore Technology, Inc.

TERM BLOCK PLUG 8POS 90DEG 5MM

23

OSTOQ247151

OSTOQ247151

On-Shore Technology, Inc.

TERM BLOCK HDR 24POS 90DEG 5MM

43

EDZ960/11

EDZ960/11

On-Shore Technology, Inc.

TERM BLOCK PLUG 11POS STR 7.62MM

0

OSTOQ073251

OSTOQ073251

On-Shore Technology, Inc.

TERM BLOCK HDR 7POS 90DEG 3.81MM

461

EDSTL950/18

EDSTL950/18

On-Shore Technology, Inc.

TERM BLOCK HDR 18POS 90DEG 5MM

40

OSTOQ021251

OSTOQ021251

On-Shore Technology, Inc.

TERM BLOCK HDR 2POS 90DEG 3.5MM

7124

OSTOQ060151

OSTOQ060151

On-Shore Technology, Inc.

TERM BLOCK HDR 6POS 90DEG 7.62MM

0

ED951/6

ED951/6

On-Shore Technology, Inc.

TERM BLOCK PLUG 6POS STR 5MM

0

EDSTL956/7

EDSTL956/7

On-Shore Technology, Inc.

TERM BLOCK HDR 7POS VERT 5MM

0

EDSTLZ975/4

EDSTLZ975/4

On-Shore Technology, Inc.

TERM BLOCK HDR 8POS VERT 5.08MM

0

OSTOQ091251

OSTOQ091251

On-Shore Technology, Inc.

TERM BLOCK HDR 9POS 90DEG 3.5MM

74

ED130/5DS

ED130/5DS

On-Shore Technology, Inc.

TERM BLOCK PLUG 5POS 90DEG 5MM

31

OSTOQ083251

OSTOQ083251

On-Shore Technology, Inc.

TERM BLOCK HDR 8POS 90DEG 3.81MM

9412

EDSTL130/5

EDSTL130/5

On-Shore Technology, Inc.

TERM BLOCK HDR 5POS VERT 5MM

2181

EDZ1100/4

EDZ1100/4

On-Shore Technology, Inc.

TERM BLOCK PLUG 4POS 5.08MM

85

OSTTJ035153

OSTTJ035153

On-Shore Technology, Inc.

TERM BLOCK PLUG 3POS STR 5.08MM

1510

EDSTLZ955/20

EDSTLZ955/20

On-Shore Technology, Inc.

TERM BLOCK HDR 20POS VERT 5.08MM

38

OSTOQ083250

OSTOQ083250

On-Shore Technology, Inc.

TERM BLOCK HDR 8POS VERT 3.81MM

2264

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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