HMX Blue Topaz Switch
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The HMX Blue Topaz is a high-quality linear keyboard switch distinguished by its precise manufacturing and exceptionally well-tuned acoustics. The housing utilizes a specially designed top housing to reduce top-out sound and a bottom housing made from a novel nylon blend (P4) for quieter bottom-out. This results in a clean, slightly clacky profile that many enthusiasts appreciate. Factory lubrication further ensures a remarkably consistent typing feel.
Technical specifications
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Type: Linear (no tactile feedback, no click)
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Operating force: approx. 40 gf
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Bottom-out force: approx. 48 gf
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Pre-travel (trigger travel): approx. 2.0 mm
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Total travel: approx. 3.8 - 3.9 mm
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Connector: 5-pin (PCB mounting, MX compatible)
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Stem material: LY (Lycra-like)
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Top housing: Polycarbonate (PC) with a special shape for noise reduction.
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Bottom housing: Nylon mix (P4) with less fiberglass and more PTFE for a more dampened feel.
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Spring: 22 mm single-stage (according to manufacturer's specifications)
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Factory lubrication: Yes