Terminal Blocks - Headers, Plugs and Sockets

Image Part Number Description / PDF Quantity Rfq
OSTOQ200151

OSTOQ200151

On-Shore Technology, Inc.

TERM BLOCK HDR 20POS 7.62MM

0

OSTVO101150

OSTVO101150

On-Shore Technology, Inc.

TERM BLOCK HDR 10POS VERT 3.5MM

0

OSTTS15715C

OSTTS15715C

On-Shore Technology, Inc.

TERM BLOCK PLUG 15POS 90DEG 5MM

0

OSTVL065251

OSTVL065251

On-Shore Technology, Inc.

TERM BLOCK HDR 6POS 90DEG 5.08MM

0

OSTH403505B

OSTH403505B

On-Shore Technology, Inc.

TERM BLOCK PLUG 3POS 5.08MM

0

OSTVL041251

OSTVL041251

On-Shore Technology, Inc.

TERM BLOCK HDR 4POS 90DEG 3.5MM

0

OSTTS05115A

OSTTS05115A

On-Shore Technology, Inc.

TERM BLOCK PLUG 5POS 90DEG 3.5MM

0

OSTVL185150

OSTVL185150

On-Shore Technology, Inc.

TERM BLOCK HDR 18POS VERT 5.08MM

0

OSTOQ060550

OSTOQ060550

On-Shore Technology, Inc.

TERM BLOCK HDR 6POS VERT 7.62MM

0

OSTV7133150

OSTV7133150

On-Shore Technology, Inc.

TERM BLOCK HDR 13POS VERT 3.81MM

0

OSTEM04A152

OSTEM04A152

On-Shore Technology, Inc.

TERM BLOCK PLUG 4POS 7.5MM

0

OSTTS22015D

OSTTS22015D

On-Shore Technology, Inc.

TERM BLOCK PLUG 22POS 7.62MM

0

EDSTL971/10

EDSTL971/10

On-Shore Technology, Inc.

TERM BLOCK HDR 20POS 90DEG 5MM

0

OSTVK231150

OSTVK231150

On-Shore Technology, Inc.

TERM BLOCK HDR 23POS 45DEG 3.5MM

0

OSTTT042180

OSTTT042180

On-Shore Technology, Inc.

TERM BLOCK PLUG 4POS 90DEG 3.5MM

0

OSTVK063150

OSTVK063150

On-Shore Technology, Inc.

TERM BLOCK HDR 6POS 45DEG 3.81MM

0

OSTVM027550

OSTVM027550

On-Shore Technology, Inc.

TERM BLOCK PLUG 2POS STR 5MM

0

EDSTLZ950/3-OE

EDSTLZ950/3-OE

On-Shore Technology, Inc.

TERM BLOCK HDR 3POS 90DEG 5.08MM

0

OSTV7095150

OSTV7095150

On-Shore Technology, Inc.

TERM BLOCK HDR 9POS VERT 5.08MM

0

OSTVM205553

OSTVM205553

On-Shore Technology, Inc.

TERM BLOCK PLUG 20POS 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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