Terminal Blocks - Headers, Plugs and Sockets

Image Part Number Description / PDF Quantity Rfq
OSTTJ030150

OSTTJ030150

On-Shore Technology, Inc.

TERM BLOCK PLUG 3POS STR 7.62MM

1842

EDSTLZ1550/7

EDSTLZ1550/7

On-Shore Technology, Inc.

TERM BLOCK HDR 7POS 90DEG 3.81MM

156

OSTTS06515A

OSTTS06515A

On-Shore Technology, Inc.

TERM BLOCK PLUG 6POS 5.08MM

150

EDZ960/6

EDZ960/6

On-Shore Technology, Inc.

TERM BLOCK PLUG 6POS STR 7.62MM

0

OSTOQ037050

OSTOQ037050

On-Shore Technology, Inc.

TERM BLOCK HDR 3POS VERT 5MM

240

EDSTLZ990/8

EDSTLZ990/8

On-Shore Technology, Inc.

TERM BLOCK HDR 8POS 45DEG 5.08MM

86

ED130/4DS

ED130/4DS

On-Shore Technology, Inc.

TERM BLOCK PLUG 4POS 90DEG 5MM

0

ED1110/12

ED1110/12

On-Shore Technology, Inc.

TERM BLOCK PLUG 12POS 270DEG 5MM

0

EDSTLZ990/9

EDSTLZ990/9

On-Shore Technology, Inc.

TERM BLOCK HDR 9POS 45DEG 5.08MM

146

OSTTJ205153

OSTTJ205153

On-Shore Technology, Inc.

TERM BLOCK PLUG 20POS STR 5.08MM

75

OSTOQ165450

OSTOQ165450

On-Shore Technology, Inc.

TERM BLOCK HDR 16POS VERT 5.08MM

227

OSTOQ0854501

OSTOQ0854501

On-Shore Technology, Inc.

TERM BLOCK HDR 8POS VERT 5.08MM

0

OSTV7203151

OSTV7203151

On-Shore Technology, Inc.

TERM BLOCK HDR 20POS 3.81MM

902

OSTOQ055451

OSTOQ055451

On-Shore Technology, Inc.

TERM BLOCK HDR 5POS 90DEG 5.08MM

4418

OSTTS06515B

OSTTS06515B

On-Shore Technology, Inc.

TERM BLOCK PLUG 6POS 5.08MM

3074

OSTTJ057150

OSTTJ057150

On-Shore Technology, Inc.

TERM BLOCK PLUG 5POS STR 5MM

1466

EDSTLZ970/3

EDSTLZ970/3

On-Shore Technology, Inc.

TERM BLOCK HDR 6POS 90DEG 5.08MM

0

OSTOQ030150

OSTOQ030150

On-Shore Technology, Inc.

TERM BLOCK HDR 3POS VERT 7.62MM

3496

OSTOQ035351

OSTOQ035351

On-Shore Technology, Inc.

TERM BLOCK HDR 3POS 90DEG 5.08MM

248

OSTV8085150

OSTV8085150

On-Shore Technology, Inc.

TERM BLOCK PLUG 8POS STR 5.08MM

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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