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BSUN Usagi/537 LINEAR

Bsun Usagi/537 LINEAR Switches

The Bsun Usagi/537 LINEAR is a meticulously engineered mechanical keyboard switch designed for enthusiasts who demand precision and smoothness in their typing experience. With its advanced materials and innovative design, this switch offers a unique blend of performance and durability.... Read more
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VendorPrice (USD)Link*
BSUN Usagi/537 LINEAR
UniKeys
$0.35
Out of stock
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Compare Bsun Usagi/537 LINEAR vs Keygeek MATCHA LINEAR vs Keygeek LITTLE GHOST LINEAR Specification

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Bsun Usagi/537 LINEARKeygeek MATCHA LINEARKeygeek LITTLE GHOST LINEAR
BSUN Usagi/537 LINEAR
KEYGEEK MATCHA PUDDING LINEAR
KEYGEEK LITTLE GHOST LINEAR
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Name
Bsun Usagi/537 LINEAR
Name
Keygeek MATCHA LINEAR
Name
Keygeek LITTLE GHOST LINEAR
Release year
2024
Release year
2025
Release year
2025
Switch type
Linear
Switch type
Linear
Switch type
Linear
Factory lubed
 
Factory lubed
 
Factory lubed
 
Profile
Standard profile
Profile
Standard profile
Profile
Standard profile
Actuation force
45g
Actuation force
45g
Actuation force
42g
Bottom out force
51g
Bottom out force
52g
Bottom out force
50g
Pre travel
1.9mm
Pre travel
2mm
Pre travel
2mm
Total travel
3.6mm
Total travel
3.6mm
Total travel
3.7mm
Pins
-
Pins
-
Pins
-
Factory lubed
 
Factory lubed
 
Factory lubed
 
Magnetic Hall Effect
 
Magnetic Hall Effect
 
Magnetic Hall Effect
 
Top Housing Material
PC
Top Housing Material
PC
Top Housing Material
PC
Bottom Housing Material
PME
Bottom Housing Material
Nylon
Bottom Housing Material
PC
Stem Material
UPE
Stem Material
UPE
Stem Material
UPE
Sound profile
-
Sound profile
Thocky
Sound profile
Thocky
Spring type
Standard
Spring type
Standard
Spring type
Standard
Double stage
 
Double stage
 
Double stage
 
Long pole
 
Long pole
 
Long pole
 
Dust proof
 
Dust proof
 
Dust proof
 
Water resistant
 
Water resistant
 
Water resistant
 
Weight
-
Weight
-
Weight
-
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Product Description

The Bsun Usagi/537 LINEAR is a meticulously engineered mechanical keyboard switch designed for enthusiasts who demand precision and smoothness in their typing experience. With its advanced materials and innovative design, this switch offers a unique blend of performance and durability.

Material Composition

The 537 switches are crafted using a unique blend of materials that enhance their performance and longevity. The stem is made from the new Y3 material, identical to the Y3X, which is a UPE blend known for its fortified hardness and increased smoothness. The top housing is constructed from PC, while the bottom housing features modified PA66, likely reinforced with fiberglass, contributing to the switch's clacky and full sound profile.

Design and Manufacturing

These switches are manufactured using BSUN's latest stem and housing molds. This updated design results in significant improvements over older BSUN switches, including reduced stem wobble and better installation compatibility with a variety of plate materials. The precise bottom-out with minimal interference ensures a consistent and satisfying typing experience.

Switch Specifications

  • Switch Type: Linear
  • Manufacturer: BSUN
  • Designer: Xida Studio
  • Stem Material: New Y3
  • Top Housing: PC
  • Bottom Housing: Modified PA66
  • Operating Force: 45g±5g
  • Bottom-out Force: 51g±5g
  • Pre-travel: 1.9mm
  • Total Travel: 3.6mm
  • Spring: 20mm single-stage nickel-plated spring

Factory Lubrication

The Bsun Usagi/537 LINEAR switches come pre-lubricated from the factory to ensure optimal performance right out of the box. A mix of 205 and 105 lubricants is applied to the sliders, while a dry film lube is used on both the sliders of the stem and the spring. This meticulous lubrication process contributes to the switch's smooth operation and enhances its overall feel.

Performance and Compatibility

Designed for a seamless typing experience, these switches offer an operating force of 45g±5g and a bottom-out force of 51g±5g, providing a balanced tactile feedback. The pre-travel distance is 1.9mm, with a total travel of 3.6mm, making it ideal for fast and accurate typing. The improved installation compatibility ensures that these switches can be easily integrated into most keyboard builds, making them a versatile choice for custom keyboard enthusiasts.

Conclusion

The Bsun Usagi/537 LINEAR switches are a testament to the blend of innovative materials and precise engineering. Whether you're building a custom keyboard or upgrading your current setup, these switches offer a reliable and enjoyable typing experience, characterized by their smoothness, durability, and distinctive sound profile.

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