Terminal Blocks - Headers, Plugs and Sockets

Image Part Number Description / PDF Quantity Rfq
EDSTLZ956/3

EDSTLZ956/3

On-Shore Technology, Inc.

TERM BLOCK HDR 3POS VERT 5.08MM

0

EDSTLZ950/24

EDSTLZ950/24

On-Shore Technology, Inc.

TERM BLOCK HDR 24POS 5.08MM

104

EDZ1110/12

EDZ1110/12

On-Shore Technology, Inc.

TERM BLOCK PLUG 12POS 5.08MM

19

OSTOQ065451

OSTOQ065451

On-Shore Technology, Inc.

TERM BLOCK HDR 6POS 90DEG 5.08MM

770

OSTOQ045551

OSTOQ045551

On-Shore Technology, Inc.

TERM BLOCK HDR 4POS 90DEG 5.08MM

21

OSTOQ103251

OSTOQ103251

On-Shore Technology, Inc.

TERM BLOCK HDR 10POS 3.81MM

6329

OSTTS12515A

OSTTS12515A

On-Shore Technology, Inc.

TERM BLOCK PLUG 12POS 5.08MM

3543

EDSTL955/7

EDSTL955/7

On-Shore Technology, Inc.

TERM BLOCK HDR 7POS VERT 5MM

125

ED1110/8

ED1110/8

On-Shore Technology, Inc.

TERM BLOCK PLUG 8POS 270DEG 5MM

0

EDSTLZ950/8-OE

EDSTLZ950/8-OE

On-Shore Technology, Inc.

TERM BLOCK HDR 8POS 90DEG 5.08MM

0

OSTTS14515A

OSTTS14515A

On-Shore Technology, Inc.

TERM BLOCK PLUG 14POS 5.08MM

349

EDZ1100/2

EDZ1100/2

On-Shore Technology, Inc.

TERM BLOCK PLUG 2POS 5.08MM

427

OSTOQ075450

OSTOQ075450

On-Shore Technology, Inc.

TERM BLOCK HDR 7POS VERT 5.08MM

0

ED950/11

ED950/11

On-Shore Technology, Inc.

TERM BLOCK PLUG 11POS STR 5MM

0

OSTTJ0211530

OSTTJ0211530

On-Shore Technology, Inc.

TERM BLOCK PLUG 2POS STR 3.5MM

2686

OSTTJ060150

OSTTJ060150

On-Shore Technology, Inc.

TERM BLOCK PLUG 6POS STR 7.62MM

95

OSTOQ027050

OSTOQ027050

On-Shore Technology, Inc.

TERM BLOCK HDR 2POS VERT 5MM

0

OSTOQ087150

OSTOQ087150

On-Shore Technology, Inc.

TERM BLOCK HDR 8POS VERT 5MM

116

EDZ951/2

EDZ951/2

On-Shore Technology, Inc.

TERM BLOCK PLUG 2POS STR 5.08MM

0

EDSTLZ950/7

EDSTLZ950/7

On-Shore Technology, Inc.

TERM BLOCK HDR 7POS 90DEG 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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