Terminal Blocks - Headers, Plugs and Sockets

Image Part Number Description / PDF Quantity Rfq
ED1550/10

ED1550/10

On-Shore Technology, Inc.

TERM BLOCK PLUG 10POS STR 3.5MM

0

OSTOQ037150

OSTOQ037150

On-Shore Technology, Inc.

TERM BLOCK HDR 3POS VERT 5MM

19850

OSTOQ035350

OSTOQ035350

On-Shore Technology, Inc.

TERM BLOCK HDR 3POS VERT 5.08MM

3856

EDSTLZ975/3

EDSTLZ975/3

On-Shore Technology, Inc.

TERM BLOCK HDR 6POS VERT 5.08MM

133

EDZ1700/8

EDZ1700/8

On-Shore Technology, Inc.

TERM BLOCK PLUG 8POS 3.81MM

99

ED130/12DS

ED130/12DS

On-Shore Technology, Inc.

TERM BLOCK PLUG 12POS 90DEG 5MM

0

EDZ960/12

EDZ960/12

On-Shore Technology, Inc.

TERM BLOCK PLUG 12POS STR 7.62MM

0

EDZ960/3

EDZ960/3

On-Shore Technology, Inc.

TERM BLOCK PLUG 3POS STR 7.62MM

0

EDZ950/18

EDZ950/18

On-Shore Technology, Inc.

TERM BLOCK PLUG 18POS STR 5.08MM

15

OSTTJ0311530

OSTTJ0311530

On-Shore Technology, Inc.

TERM BLOCK PLUG 3POS STR 3.5MM

2629

EDSTLZ951/5

EDSTLZ951/5

On-Shore Technology, Inc.

TERM BLOCK HDR 5POS 90DEG 5.08MM

90

OSTTJ1231530

OSTTJ1231530

On-Shore Technology, Inc.

TERM BLOCK PLUG 12POS STR 3.81MM

2671

OSTOQ045451

OSTOQ045451

On-Shore Technology, Inc.

TERM BLOCK HDR 4POS 90DEG 5.08MM

10533

EDSTLZ990/3

EDSTLZ990/3

On-Shore Technology, Inc.

TERM BLOCK HDR 3POS 45DEG 5.08MM

0

EDSTL950/11

EDSTL950/11

On-Shore Technology, Inc.

TERM BLOCK HDR 11POS 90DEG 5MM

0

EDSTL951/7

EDSTL951/7

On-Shore Technology, Inc.

TERM BLOCK HDR 7POS 90DEG 5MM

0

OSTTJ065153

OSTTJ065153

On-Shore Technology, Inc.

TERM BLOCK PLUG 6POS STR 5.08MM

588

EDSTLZ951/9

EDSTLZ951/9

On-Shore Technology, Inc.

TERM BLOCK HDR 9POS 90DEG 5.08MM

0

EDZ950/11

EDZ950/11

On-Shore Technology, Inc.

TERM BLOCK PLUG 11POS STR 5.08MM

0

OSTOQ037051

OSTOQ037051

On-Shore Technology, Inc.

TERM BLOCK HDR 3POS 90DEG 5MM

565

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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