HMX Retro FJ400 Switch
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The HMX FJ400 from HMX's Retro Film Collection is a linear switch with a balanced typing feel and a pleasant, mid-range sound profile. It's particularly well-suited for builds where both typing comfort and sound quality are paramount—for example, in the custom keyboard field. With pre-lubricated components and solid materials, it offers a ready-to-use solution for discerning users.
Technical specifications:
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Type: Linear (without tactile bump or click mechanism)
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Operating force: approx. 50 gf ± 2 gf
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Bottom-out force: approx. 58 gf ± 2 gf
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Pre-travel: approx. 2.0 mm
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Total Travel: approx. 3.8 mm ± 0.2 mm
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Mounting format: 5-pin MX style (PCB mount)
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Housing material: Top housing polycarbonate (PC); Bottom housing P2 material
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Stem material: T2 material
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Spring: 22mm single stage spring
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Factory lubricated: Yes