Card Edge Housings

Card Edge Connectors - Housings: Definition, Function, Applications, and Selection Criteria

Definition:
Card edge connectors, also known as edge card connectors or card edge contacts, are electronic components designed to establish electrical connections between a printed circuit board (PCB) and an external device or another PCB. The housings of these connectors are crucial as they provide physical support, protection, and alignment for the contacts.

Function:
The primary function of card edge connectors is to facilitate the transfer of electrical signals and power between components. They are designed to handle multiple connections simultaneously, ensuring reliable data transmission and power supply. The housings play a role in maintaining the integrity of these connections by shielding them from environmental factors and mechanical stress.

Applications:
Card edge connectors are widely used in various industries and applications, including:
1. Telecommunications - for connecting circuit boards in telephone exchanges and network equipment.
2. Computers and Servers - to connect expansion cards to the motherboard.
3. Consumer Electronics - in devices like gaming consoles, where they connect controllers or other peripherals.
4. Industrial Automation - for connecting sensors, actuators, and control units in automated systems.
5. Automotive - in infotainment systems and other electronic control modules.

Selection Criteria:
When selecting card edge connectors and their housings, consider the following criteria:
1. Contact Density: The number of contacts per unit length, which affects the data transfer rate and power supply capacity.
2. Voltage and Current Ratings: Ensure the connectors can handle the required voltage and current levels without overheating or failure.
3. Environmental Resistance: Choose housings that protect against dust, moisture, and other environmental factors relevant to the application.
4. Mechanical Durability: The connectors should withstand the number of mating cycles expected in the application without degradation.
5. Compatibility: Ensure the connectors are compatible with the PCB and mating devices in terms of pitch, pin count, and orientation.
6. Ease of Assembly: Consider the ease of mounting the connectors onto the PCB and the overall assembly process.
7. Cost: Balance the cost of the connectors with the performance and reliability requirements of the application.

In summary, card edge connectors with robust housings are essential for maintaining reliable electrical connections in a variety of electronic devices and systems. The selection process should take into account the specific requirements of the application to ensure optimal performance and longevity.
Please refer to the product rule book for details.