KMR241GLFS

C&K

-40℃~+85℃ 1.9mm 100,000 cycles 2.8mm 32V 4.6mm 4N 50mA Gull Wing Round Button SPST-NO Surface Mount,Vertical SMD Tactile Switches ROHS

Extended

Datasheetc-k/KMR241GLFS

Category: Tactile Switches
Package: SMD
Pins: 4

Overview

The KMR241GLFS is a tactile Switche made by C&K in a SMD package with 4 pins. -40℃~+85℃ 1.9mm 100,000 cycles 2.8mm 32V 4.6mm 4N 50mA Gull Wing Round Button SPST-NO Surface Mount,Vertical SMD Tactile Switches ROHS.

PCBKit's library has its KiCad symbol (EasyEDA_Cloud:KMR621NGLFS, from EasyEDA) and its footprint (EasyEDA_Cloud:KEY-SMD_4P-L4.2-W2.8-P1.60-LS4.6, from EasyEDA), ready for a KiCad board. 4,928 are in stock at JLCPCB (part C221682). 10 open-source boards in 8 repositories on GitHub use it.

Symbol

EasyEDA_Cloud:KMR621NGLFSFrom EasyEDA

Footprint

EasyEDA_Cloud:KEY-SMD_4P-L4.2-W2.8-P1.60-LS4.6From EasyEDA

Parameters

Actuator Style: Round Button
Circuit: SPST-NO
Contact Current: 50mA
Length: 4.6mm
Life: 100,000 cycles
Mounting Type: Surface Mount,Vertical
Operating Force: 4N
Operating Temperature: -40℃~+85℃
Switch Height: 1.9mm
Termination Style: Gull Wing
Voltage Rating: 32V
Width: 2.8mm

Order codes

KMR241GLFSLCSC C221682

Pinout

The pins of the KMR241GLFS
Pin	Name	Type
1	1	Unspecified
2	2	Unspecified
3	3	Unspecified
4	4	Unspecified

Open-source boards using it

All 10

2 layers68 × 40 mm
Stm32-io extend
hardenedlinux/cheap-pcb
Cheap PCB: Better understanding the current status of hardware supply chain
44 parts170CC0-1.0
6 layers87.6 × 53.9 mm
Teensy 4.1 attempt 1
Wierdwizard2587/Custom-Teensy-4.1-PCB-Design
Custom Designed MCU design based upon Teensy 4.1
92 parts9
4 layers22.9 × 50.8 mm
ESP32 S2 MINI 1
jenschr/LectureFeather
A Feather dev board based on ESP32-S2
50 parts7
6 layers51 × 65 mm
Owo
hydrastro/owo
uwu
135 parts3
2 layers30.5 × 48.3 mm
ESP32 CP2102
jenschr/ESP32-workshop-files
Kidad files from my two-day workshop on creating an ESP32 based IoT device from scratch.
32 parts1MIT
2 layers40 × 30 mm
NOVA S3
fubiniricci/NOVA-S3
A 40 × 30 mm, two-layer ESP32-S3 development board, designed and generated programmatically from the official KiCad libraries with a custom grid-based auto-router.
26 partsMIT
2 layers75 × 45 mm
Fat8
jkearneyma/fat8
Physically tiny, but fat in capability Intel 8008 SBC
32 partsBSD-3-Clause
2 layers30.9 × 63 mm
Stm32-io extend
hardenedlinux/cheap-pcb
Cheap PCB: Better understanding the current status of hardware supply chain
32 parts170CC0-1.0

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A picture

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A picture that opens the part, for a README

[![KMR241GLFS](https://pcbkit.io/embed/parts/c-k/KMR241GLFS.jpg?size=s)](https://pcbkit.io/parts/c-k/KMR241GLFS)

Questions

Is there a KiCad symbol and footprint for the KMR241GLFS?

Yes. The symbol is EasyEDA_Cloud:KMR621NGLFS and the footprint EasyEDA_Cloud:KEY-SMD_4P-L4.2-W2.8-P1.60-LS4.6, both drawn on this page. PCBKit places them on a board for you when you design with it.

What package is the KMR241GLFS?

SMD, with 4 pins. Its footprint is drawn on this page.

Where is the KMR241GLFS datasheet?

C&K publishes it: the Datasheet link on this page opens it.

Where can I order the KMR241GLFS?

JLCPCB lists it as part C221682, with 4,928 in stock; the sellers' links on this page open their listings.

What can replace the KMR241GLFS?

Parts like it in the library: the KMR221NGLFS by C&K, the KMR621NGLFS by C&K, the KMR231NGULCLFS by C&K and the KMR231NGLFS by C&K. Check their datasheets: a part that fits the footprint may still differ in its ratings.

Which open-source boards use the KMR241GLFS?

10 boards in 8 repositories on GitHub; the most starred are listed on this page, with their KiCad files.