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Miniature Reed Switch: Optimal Solution for Space-Saving Applications

59177 Reed Switch
59177 Reed Switch

Littelfuse, Inc. presents the 59177 Series ultra-miniature overmolded reed switch, designed to provide flexibility for space-constrained applications. The switch, measuring 9.0 mm x 2.5 mm x 2.4 mm (0.354” x 0.098‘’ x 0.094”), is the smallest in Littelfuse's product range and can handle up to 170 Vdc or 0.25 A at up to 10 W. Notably, it operates without consuming power, making it suitable for low-power applications and enhancing energy efficiency in battery-powered devices. The overmolded design ensures mechanical shock and vibration resistance, making it adaptable for challenging environments. The switch's low-profile design also allows seamless integration into confined spaces, and its SMD package facilitates standard assembly mounting. 

Suitable for wet and harsh conditions, the switch guarantees consistent performance over its service life and exhibits no leakage current in the 'open' state, making it ideal for battery-powered IoT applications. The 59177 Series caters to various markets, including security systems, metering, consumer electronics, factory automation, process equipment, and proximity sensing. 


  • Ultra-miniature size of 9.0 mm x 2.5 mm x 2.4 mm.
  • Low power consumption
  • Compatible with battery powered IoT applications.
  • Overmolded design 
  • Handle up to 170 Vdc or 0.25 A at up to 10 W


  • Security and access control systems
  • Metering applications
  • Battery-powered consumer electronics and wearables
  • Various industrial and commercial applications
  • Factory automation.


The 59177 Reed Switch Series is available in tape and reel quantities of 1500 pieces through authorized Littelfuse distributors worldwide.

Component Datasheet

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