The Outemu Butterfly Silent Linear Switch is a low-noise, linear switch option, ideal for use in keyboards where a quiet typing action is desired – for example, in an office environment or as a late-night setup. Thanks to the combination of a POM/TPU stem, transparent polycarbonate housing, and factory lubrication, the switch delivers a smooth actuation experience with significantly reduced noise.

Technical specifications

• Type: Silent Linear (linear stroke without tactile bump, with noise damping)

• Connector: 5-pin (PCB mounting, MX-style cross connector)

• Housing material: Top housing and bottom housing made of hardened polycarbonate (PC)

• Stem material: POM + TPU (flexible damping elements)

• Pre-travel (trigger travel): approx. 2.0 mm

• Total Travel: approx. 3.7 mm

• Operating force: approx. 37 gf (±5 gf)

• Bottom-Out Force: approx. 42 gf Max

• Factory lubrication: Yes

• Special features: Special "silent" construction with TPU cushioning, optimized for low noise when pressed.