PCB Mounted vs. Plate Mounted Switches

What Are Plate-Mounted Switches?

Plate-mounted switches tend to be switches designed specifically to be mounted on a plate prior to installation on a PCB. It offers additional support for keys and helps mitigate side-by-side key wobbling when used. If you use plate-mounted switches, you’ll have high-quality performance, enhanced stability, and flexing prevention.

Turning PCB-mounted switches to plate-mounted PCBs is a simple yet straightforward process. It includes cutting the switch pins and securing them to the metal plate. This makes it an excellent choice for larger keyboards, where plate mounting is needed.

Since plate-mounted switches tend to have three pins, they are not compatible with direct circuit board mounting. Hence, it isn’t recommended that they be used for plateless builds.

Pros of Plate-Mounted Switches

The pros of plate-mounted switches include: 

• High-performance
• Enhanced stability and flexing minimization
• Easy conversion processes for PCB-mounted switches

Cons of Plate Mounted Switches

The cons of plate-mounted switches include:

• Plate-mounted switches have compatibility issues with direct circuit board mounting
• They are very hard to move once the process is finished

What Are PCB-Mounted Switches?

PCB-mounted switches are the right choice if you need a stable and wobble-free keyboard design. PCB-mounted switches have extra pins for the next level of stability. The two plastic side pins and central pin coordinate with the metal pins, ensuring a robust connection between the switch and the pointed circuit board assembly.

Pros of PCB-Mounted Switches

The pros of PCB-mounted switches include:

• The 5-pin structure offers extra stability, mitigating flex and wobble 
• Highly secured and stable keyboard design, perfect for small keyboards 
• Enough options for customization and modifications 
• Conveniently modifiable affordable switches

Cons of PCB-Mounted Switches

The cons of PCB-mounted switches include: 

• PCB-mounted switches are less compatible than plate-mounted switches
• It can be challenging to repair PCB-mounted switches

Plate-Mounted And PCB-Mounted Switches: Key Differences

When it comes to choosing between PCB-mounted vs plate-mounted switches, there are many differences that set them apart. Here’s a comprehensive breakdown of the key differences between them:

Mounting Method

• PCB Mount Switches: They feature 5 pins (two plastic alignment pins, two metal pins for electrical connection, and a center pin for stability). PCB-mounted switches are designed specifically to be soldered directly onto the printed circuit board (PCB) of the keyboard. The very type of switch does not have a metal plate for installation, which makes them common in custom mechanical keyboards. 

• Plate Mount Switches: Plate-mounted switches feature 3 pins (only the two metal pins and the center pin, with no extra plastic pins). They are installed into a plastic or metal plate before being soldered onto the PCB. These switches rely on the plate as far as structural support and switch stability are concerned.

Stability & Typing Feel

• PCB Mount: PCB-mounted and plate-mounted switches are different in stability and feel as well. Because of the additional plastic pins, PCB-mounted switches are more stable without a plate.
• Plate Mount: Plate-mounted switches are more rigid and secure because of the supporting plate. The supporting plate ensures a consistent typing feel and assists with key wobble.

Customization & Flexibility

• PCB Mount: Customization and flexibility are also the terms on which PCB and plate-mounted switches differ. PCB-mounted switches follow for hot-swappable PCBs, which allow you to change switches with no soldering (if the PCB supports it). It provides flexibility when it comes to selecting between plastic or plateless builds. 
• Plate Mount: They need a plate that is likely to limit the switch replacement options. They are preferred in pre-built keyboards because of the ease of mass production and durability.

Build Complexity

• PCB Mount: These switches are more common in custom keyboards. When it comes to assembling, they can be a bit harder if the PCB does not have a plate for support.
• Plate Mount: Plate-mounted switches tend to be easier to build and maintain. It makes them an ideal alternative to mainstream keyboards. The plate ensures greater alignment, making the installation of the switches more straightforward.

Installation

• PCB Mount: When it comes to installation, PCB-mounted switches need soldering unless using a hot-swappable PCB. They have extra alignment pins (5-pin design) intended to secure them directly to the PCB. Since these switches may wobble before sondering, it can be tricky to install them without a plate.
• Plate Mount: Since plate-mounted switches clip into the plastic or metal plate, they are easier to install. They make use of a 3-pin design that makes them compatible with most pre-built keyboards. There’s no soldering needed when they are used with a hot-swappable PCB.

Keyboard Compatibility

• PCB Mount: Keyboard compatibility also differentiates PCB-mounted switches from plate-mounted switches. PCB-mounted switches are mostly found in enthusiast builds and custom mechanical keyboards. They are compatible with PCBs that are designed for 5-pin switches and provide enhanced flexibility for layouts and switch modifications. 
• Plate Mount: Plate-mounted switches are commonly used in mainstream and pre-built keyboards. They work with most standard cases and PCBs, providing support for 3-pin switches. Because of plate constraints, these switches allow limited flexibility when it comes to modification of the switch placement.  

Rigidity

• PCB Mount: As they rely solely on the PCB for stability, PCB-mounted switches tend to be less rigid. They may feel slightly wobbly if the PCB experiences a lack of a plate for reinforcement. Apart from these, these keyboards are more flexible when it comes to an enhanced typing experience, specifically with thinner PCBs.
• Plate Mount: Plate-mounted switches, on the other hand, are more rigid because of their plastic or metal plate holding switches in place. They ensure mitigated switch wobble, allowing a more stable and enhanced typing experience. A plate is more likely to affect the sound profile as well as the feel depending on the material used.

Working Style

• PCB Mount: The Working style also differs the PCB-mounted switches from plate-mounted switches. They are preferred by enthusiasts who need more options for customization. They need careful soldering and assembly, along with proper alignment. PCB-mounted switches are the ideal choice when it comes to unique layouts or frequent modification of the switches.
• Plate Mount: Plate-mounted switches are an excellent choice for users who need a straightforward and hassle-free build. They are convenient when it comes to maintaining and replacing switches, especially with hot-swappable PCBs. The very type of switch is excellent for those who prioritize consistency and durability over customization. 

Which One Should You Choose?

If you're someone willing to build a custom keyboard or want hot-swap capability, choosing PCB-mounted switches could be the best decision you make. If you are using a pre-built or high-durability keyboard and need extra stability, going with the plate-mounted switch is an ideal choice.