Molex Connectors

Known for their reliability and broad utility across various industries, including automotive and consumer electronics.


 30 April 2024   |     1 minute read   |   By Kevin McAleer   |   Share this article on

The Three Types of Electrical Connectors

Electrical connectors are classified into three types based on their termination ends:

  • Board-to-board connectors
  • Cable/wire-to-cable/wire connectors
  • Cable/wire-to-board connectors

What are Molex Connectors?

Molex connectors are a family of connectors commonly used for power and signal applications across various sectors. These connectors are manufactured by Molex Incorporated, a major provider of electronic connectors and interconnect components.


Description

Molex connectors are designed to handle both low and high current applications, offering solutions that range from simple wire-to-wire to complex multi-pin configurations. They are appreciated for their versatility and reliability in providing secure connections.


Types of Molex Connectors

Connector Type Pin Configuration Current Rating Voltage Rating Typical Use
Standard Multiple configurations Varies Varies General electronics, power supplies
Mini-Fit Jr 4 to 24 pins Up to 9A Up to 600V PCs, appliances
Micro-Fit 3.0 2 to 24 pins Up to 5A Up to 250V Data, telecom
Fit Power 2 to 24 pins Up to 23A Up to 600V Industrial, automotive

Application Areas

Consumer Electronics: Used in devices like home appliances and computer peripherals for reliable power connections.

Automotive: Essential for wiring in vehicles, handling everything from signal transmissions to powering in-car entertainment systems.

Industrial: Employed in machinery and equipment to ensure robust and durable connections under challenging conditions.


Conventions

Molex connectors are known for their ease of use, with many designed to be “no-tool” connectors, and their keyed housings prevent incorrect mating.


Pros and Cons

Pros:

  • Robust and durable, suitable for a wide range of environmental conditions.
  • Versatile configurations fit a variety of power and signal needs.
  • Keyed and polarized to prevent misalignment and wrong connections.

Cons:

  • Can be more expensive than simpler connectors.
  • Some types require specific tools for crimping and assembly.