HMX FJ400 LINEAR EDITION Switches

The HMX FJ400 Linear Edition is a meticulously designed keyboard switch that offers a unique typing experience. Known for its medium clack sound, this switch is part of the HMX Film series and is crafted with precision to provide a refined typing feel. With its innovative design and high-quality materials, it stands out as a reliable choice for keyboard enthusiasts.

Design and Build Quality

The FJ400 switch is designed by 80 Retros and manufactured by HMX, ensuring top-notch quality and performance. It features a T2 stem material, which contributes to its smooth linear action. The top housing is made from PC, while the bottom housing utilizes P2 material, commonly seen in Cloud switches, to produce a clacky yet full bottom-out sound.

Performance Specifications

The HMX FJ400 Linear Edition is engineered for optimal performance. Here are the key specifications:

• Switch Type: Linear
• Operating Force: 50±2g
• Bottom-out Force: 58±2g
• Pre-travel: 2.0mm
• Total Travel: 3.8±0.2mm
• Spring: 22mm KOS single-stage extended

Sound Profile

Among the Film Switch series, the FJ400 is known for its medium clack sound. It is positioned between the kd200 and 1989 switches in terms of clackiness, offering a balanced auditory feedback that is neither too loud nor too soft.

Advanced Molding Techniques

The FJ400 switches are crafted using HMX's latest stem and bottom housing molds. These new molds enhance the typing feel, providing a smoother and more satisfying experience compared to previous models.

Factory Lubrication

To ensure smooth operation and reduce friction, the FJ400 switches come factory-lubed. A mix of GPL105 and GPL205 lubricants is applied to the leaf spring, stem feet, and bottom housing rails, enhancing the overall performance and longevity of the switches.

Package Details

Each package of the HMX FJ400 Linear Edition contains 10 switches, allowing for easy customization and replacement in your keyboard setup.