Terminal Blocks - Headers, Plugs and Sockets

Image Part Number Description / PDF Quantity Rfq
0395100219

0395100219

Woodhead - Molex

TERM BLOCK PLUG 19POS STR 3.81MM

0

0395121508

0395121508

Woodhead - Molex

TERM BLOCK HDR 8POS 90DEG 3.81MM

0

0395000114

0395000114

Woodhead - Molex

TERM BLOCK PLUG 14POS STR 3.5MM

0

0395345113

0395345113

Woodhead - Molex

TERM BLOCK PLUG 13POS STR 5.08MM

0

0395200121

0395200121

Woodhead - Molex

TERM BLOCK PLUG 21POS STR 5MM

0

0395345103

0395345103

Woodhead - Molex

TERM BLOCK PLUG 3POS STR 5.08MM

0

0395338310

0395338310

Woodhead - Molex

TERM BLOCK PLUG 10POS 5.08MM

0

0397340011

0397340011

Woodhead - Molex

TERM BLOCK HDR 11POS 5.08MM

0

0395269017

0395269017

Woodhead - Molex

TERM BLOCK HDR 17POS 90DEG 5MM

0

0395237422

0395237422

Woodhead - Molex

TERM BLOCK PLUG 22POS 270DEG 5MM

0

0399400309

0399400309

Woodhead - Molex

TERM BLOCK PLUG 9POS 5.08MM

0

0395111017

0395111017

Woodhead - Molex

TERM BLOCK HDR 17POS VERT 3.81MM

0

0395073019

0395073019

Woodhead - Molex

TERM BLOCK PLUG 19POS 3.5MM

0

0395205608

0395205608

Woodhead - Molex

TERM BLOCK PLUG 8POS STR 5MM

0

0395225017

0395225017

Woodhead - Molex

TERM BLOCK HDR 17POS 90DEG 5MM

0

0395100603

0395100603

Woodhead - Molex

TERM BLOCK PLUG 3POS STR 3.81MM

0

0395116018

0395116018

Woodhead - Molex

TERM BLOCK HDR 18POS VERT 3.81MM

0

0395305219

0395305219

Woodhead - Molex

TERM BLOCK PLUG 19POS STR 5.08MM

0

0394840007

0394840007

Woodhead - Molex

TERM BLOCK PLUG 7POS 90DEG 4MM

0

0395121511

0395121511

Woodhead - Molex

TERM BLOCK HDR 11POS 3.81MM

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

RFQ BOM Call Skype Email
Top