Terminal Blocks - Headers, Plugs and Sockets

Image Part Number Description / PDF Quantity Rfq
EDSTL956/5

EDSTL956/5

On-Shore Technology, Inc.

TERM BLOCK HDR 5POS VERT 5MM

0

EDZ1100/12

EDZ1100/12

On-Shore Technology, Inc.

TERM BLOCK PLUG 12POS 5.08MM

0

OSTVL203151

OSTVL203151

On-Shore Technology, Inc.

TERM BLOCK HDR 20POS 3.81MM

0

EDSTLZ990/5

EDSTLZ990/5

On-Shore Technology, Inc.

TERM BLOCK HDR 5POS 45DEG 5.08MM

0

OSTTH020160

OSTTH020160

On-Shore Technology, Inc.

TERM BLOCK PLUG 2POS 90DEG 5MM

17698

EDSTLZ990/23

EDSTLZ990/23

On-Shore Technology, Inc.

TERM BLOCK HDR 23POS 5.08MM

0

EDSTL950/20

EDSTL950/20

On-Shore Technology, Inc.

TERM BLOCK HDR 20POS 90DEG 5MM

34

OSTOQ047051

OSTOQ047051

On-Shore Technology, Inc.

TERM BLOCK HDR 4POS 90DEG 5MM

5768

OSTTS10715B

OSTTS10715B

On-Shore Technology, Inc.

TERM BLOCK PLUG 10POS 270DEG 5MM

0

OSTOQ147151

OSTOQ147151

On-Shore Technology, Inc.

TERM BLOCK HDR 14POS 90DEG 5MM

442

EDSTLZ955/5

EDSTLZ955/5

On-Shore Technology, Inc.

TERM BLOCK HDR 5POS VERT 5.08MM

676

EDZ950/3

EDZ950/3

On-Shore Technology, Inc.

TERM BLOCK PLUG 3POS STR 5.08MM

2298

OSTTS13315C

OSTTS13315C

On-Shore Technology, Inc.

TERM BLOCK PLUG 13POS 3.81MM

0

EDSTLZ955/16

EDSTLZ955/16

On-Shore Technology, Inc.

TERM BLOCK HDR 16POS VERT 5.08MM

236

ED1100/14

ED1100/14

On-Shore Technology, Inc.

TERM BLOCK PLUG 14POS 90DEG 5MM

0

EDZ1100/7

EDZ1100/7

On-Shore Technology, Inc.

TERM BLOCK PLUG 7POS 5.08MM

140

EDZ950/14

EDZ950/14

On-Shore Technology, Inc.

TERM BLOCK PLUG 14POS STR 5.08MM

1

OSTTJ027150

OSTTJ027150

On-Shore Technology, Inc.

TERM BLOCK PLUG 2POS STR 5MM

24481

EDSTLZ975/2

EDSTLZ975/2

On-Shore Technology, Inc.

TERM BLOCK HDR 4POS VERT 5.08MM

0

OSTOQ027151

OSTOQ027151

On-Shore Technology, Inc.

TERM BLOCK HDR 2POS 90DEG 5MM

9512

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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