IP40 Black Button Tactile Switch, Single Pole Single Throw (SPST) 50 mA 2.11mm Surface Mount

  • RS Stock No. 135-9079
  • Mfr. Part No. KMR221G LFS
  • Manufacturer C & K
Technical data sheets
Legislation and Compliance
RoHS Certificate of Compliance
COO (Country of Origin): FR
Product Details

C&K Micro Miniature KMR 2 Series Tactile Switches

From C & K Switches, a range of surface mount microminiature top actuated tactile switches. The KMR2 range of switches are 1.9 mm in height making them ideal for printed circuit boards where space is limited. Switches in the KMR2 series have SPST-NO momentary gold or silver contacts and are available with various actuation forces to suit most applications.

Features and Benefits

• IP40
• Excellent tactile feel
• Small footprint
• Ultra low current
• Various actuation forces
• Gold or silver contacts
• Gullwing terminals


• Medical equipment
• Industrial electronics
• Automotive


Attribute Value
Contact Configuration Single Pole Single Throw (SPST)
Terminal Type Gull Wing
Switch Operation Momentary
Actuator Length 2.11mm
Actuator Colour Black
Actuator Type Button
Length 4.2mm
Width 2.8mm
Dimensions 4.2 x 2.8mm
Mounting Type Surface Mount
Contact Current Rating 50 mA
IP Rating IP40
Operating Force 2 N
Minimum Operating Temperature -40°C
Contact Material Silver Plated
Operating Temperature Range -40 → +85°C
Maximum Operating Temperature +85°C
Voltage Rating 32V dc
7000 In stock for delivery within 5 working day(s) (Global Stock)
Price (ex. GST) Each (On a Reel of 7000)
$ 0.356
(exc. GST)
$ 0.392
(inc. GST)
Per unit
Per Reel*
7000 - 7000
14000 - 28000
35000 +
*price indicative