Terminal Blocks - Headers, Plugs and Sockets

Image Part Number Description / PDF Quantity Rfq
EDSTLZ1555/8

EDSTLZ1555/8

On-Shore Technology, Inc.

TERM BLOCK HDR 8POS VERT 3.81MM

3276

EDSTL956/4

EDSTL956/4

On-Shore Technology, Inc.

TERM BLOCK HDR 4POS VERT 5MM

0

EDZ1200/20

EDZ1200/20

On-Shore Technology, Inc.

TERM BLOCK PLUG 20POS STR 5.08MM

0

OSTOQ177051

OSTOQ177051

On-Shore Technology, Inc.

TERM BLOCK HDR 17POS 90DEG 5MM

0

EDSTLZ990/10

EDSTLZ990/10

On-Shore Technology, Inc.

TERM BLOCK HDR 10POS 5.08MM

120

EDSTL955/6

EDSTL955/6

On-Shore Technology, Inc.

TERM BLOCK HDR 6POS VERT 5MM

359

EDZ1700/6

EDZ1700/6

On-Shore Technology, Inc.

TERM BLOCK PLUG 6POS 3.81MM

956

EDSTLZ965/14

EDSTLZ965/14

On-Shore Technology, Inc.

TERM BLOCK HDR 14POS VERT 7.62MM

0

OSTEX040000

OSTEX040000

On-Shore Technology, Inc.

TERM BLOCK HDR 4POS VERT 5MM

0

EDZ960/14

EDZ960/14

On-Shore Technology, Inc.

TERM BLOCK PLUG 14POS STR 7.62MM

0

OSTOQ103250

OSTOQ103250

On-Shore Technology, Inc.

TERM BLOCK HDR 10POS VERT 3.81MM

3166

OSTTJ077150

OSTTJ077150

On-Shore Technology, Inc.

TERM BLOCK PLUG 7POS STR 5MM

0

OSTTJ047150

OSTTJ047150

On-Shore Technology, Inc.

TERM BLOCK PLUG 4POS STR 5MM

636

EDSTL950/7

EDSTL950/7

On-Shore Technology, Inc.

TERM BLOCK HDR 7POS 90DEG 5MM

0

EDSTLZ1550/14

EDSTLZ1550/14

On-Shore Technology, Inc.

TERM BLOCK HDR 14POS 3.81MM

0

EDZ1550/16

EDZ1550/16

On-Shore Technology, Inc.

TERM BLOCK PLUG 16POS STR 3.81MM

0

OSTOQ207151

OSTOQ207151

On-Shore Technology, Inc.

TERM BLOCK HDR 20POS 90DEG 5MM

58

OSTTJ165153

OSTTJ165153

On-Shore Technology, Inc.

TERM BLOCK PLUG 16POS STR 5.08MM

134

EDZ951/5

EDZ951/5

On-Shore Technology, Inc.

TERM BLOCK PLUG 5POS STR 5.08MM

0

EDSTLZ990/6

EDSTLZ990/6

On-Shore Technology, Inc.

TERM BLOCK HDR 6POS 45DEG 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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