Tactile Switches – Mouser United Kingdom

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KMR4 Microminiature SMT Tactile Switches

C&K Switches KMR4 Microminiature SMT Tactile Switches are small footprint, 2.5mm height top actuated switches with four actuation forces and excellent tactile feel. KMR4 tact switches feature ultra low current capabilities and IP40 protection. This C&K Components series offers Gullwing termination and is ideal for use in automotive, industrial electronics, and medical equipment applications.

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Image	Part #	Mfr.	Description	Datasheet	Availability	Pricing (GBP) Filter the results in the table by unit price based on your quantity.	Qty.	Illuminated	Mounting Style	Mounting Direction	Stem Height	Actuator	Switch Function	Operating Force	Current Rating	Voltage Rating DC	Power Rating	Ground Terminal	Contact Form	Termination Style	Color	Length	Width	Height	Series	Life	IP Rating	Packaging
Tactile Switches Tact KMR432NG ULC LFS C&K 1: £0.571 38,517In Stock	Mfr. Part No. KMR432NG ULC LFS Mouser Part No 611-KMR432NGULCLFS	C&K	Tactile Switches Tact Learn More about C&K ck kmr4 tactile switches	Datasheet	38,517In Stock	Cut Tape £0.571 £0.512 £0.477 £0.426 £0.408 Reel £0.408 MouseReel Available	Min.: 1 Mult.: 1 : 6,000	Non-Illuminated	SMD/SMT	Straight	1.1 mm	Oval	OFF - (ON)	3 N	50 mA	32 VDC	1 VA	No	SPST	Gull Wing Lead	Black	4.6 mm	2.8 mm	2.5 mm	KMR4	300000 Cycle	IP40	Reel, Cut Tape, MouseReel
Tactile Switches Microminiature SMT Top Actuated KMR421G ULC LFS C&K 1: £0.578 31,053In Stock	Mfr. Part No. KMR421G ULC LFS Mouser Part No 611-KMR421GULCLFS	C&K	Tactile Switches Microminiature SMT Top Actuated Learn More about C&K ck kmr4 tactile switches	Datasheet	31,053In Stock	Cut Tape £0.578 £0.504 £0.47 £0.419 View Reel £0.304 £0.388 £0.367 £0.347 £0.324 £0.304	Min.: 1 Mult.: 1 : 6,000	Non-Illuminated	SMD/SMT	Straight	1.1 mm	Oval	OFF - (ON)	2 N	50 mA	32 VDC	1 VA	Yes	SPST	Gull Wing Lead	Black	4.6 mm	2.8 mm	2.5 mm	KMR4	100000 Cycle	IP40	Reel, Cut Tape
Tactile Switches Tact KMR441G LFS C&K 1: £0.548 21,822In Stock	Mfr. Part No. KMR441G LFS Mouser Part No 611-KMR441GLFS	C&K	Tactile Switches Tact Learn More about C&K ck kmr4 tactile switches	Datasheet	21,822In Stock	Cut Tape £0.548 £0.491 £0.457 £0.408 View Reel £0.282 £0.378 £0.357 £0.337 £0.314 £0.282	Min.: 1 Mult.: 1 : 6,000	Non-Illuminated	SMD/SMT	Straight	1.1 mm	Oval	OFF - (ON)	4 N	50 mA	32 VDC	1 VA	Yes	SPST	Gull Wing Lead	Black	4.6 mm	2.8 mm	2.5 mm	KMR4	100000 Cycle	IP40	Reel, Cut Tape
Tactile Switches Tact KMR431G ULC LFS C&K 1: £0.826 7,954In Stock	Mfr. Part No. KMR431G ULC LFS Mouser Part No 611-KMR431GULCLFS	C&K	Tactile Switches Tact Learn More about C&K ck kmr4 tactile switches	Datasheet	7,954In Stock	Cut Tape £0.826 £0.727 £0.677 £0.603 View Reel £0.539 £0.559 £0.539 £0.539 MouseReel Available	Min.: 1 Mult.: 1 : 6,000	Non-Illuminated	SMD/SMT	Straight	1.1 mm	Oval	OFF - (ON)	3 N	50 mA	32 VDC	1 VA	Yes	SPST	Gull Wing Lead	Black	4.6 mm	2.8 mm	2.5 mm	KMR4	100000 Cycle	IP40	Reel, Cut Tape, MouseReel
Tactile Switches Tact KMR441NG ULC LFS C&K 1: £0.826 1,991In Stock	Mfr. Part No. KMR441NG ULC LFS Mouser Part No 611-KMR441NGULCLFS	C&K	Tactile Switches Tact Learn More about C&K ck kmr4 tactile switches	Datasheet	1,991In Stock	Cut Tape £0.826 £0.727 £0.677 £0.603 View Reel £0.419 £0.559 £0.528 £0.50 £0.467 £0.419 MouseReel Available	Min.: 1 Mult.: 1 : 6,000	Non-Illuminated	SMD/SMT	Straight	1.1 mm	Oval	OFF - (ON)	4 N	50 mA	32 VDC	1 VA	No	SPST	Gull Wing Lead	Black	4.6 mm	2.8 mm	2.5 mm	KMR4	100000 Cycle	IP40	Reel, Cut Tape, MouseReel
Tactile Switches Tact KMR421G LFS C&K 1: £0.563 15,583In Stock	Mfr. Part No. KMR421G LFS Mouser Part No 611-KMR421GLFS	C&K	Tactile Switches Tact Learn More about C&K ck kmr4 tactile switches	Datasheet	15,583In Stock	Cut Tape £0.563 £0.491 £0.457 £0.408 View Reel £0.281 £0.378 £0.357 £0.337 £0.314 £0.281 MouseReel Available	Min.: 1 Mult.: 1 : 6,000	Non-Illuminated	SMD/SMT	Straight	1.1 mm	Oval	OFF - (ON)	2 N	50 mA	32 VDC	1 VA	Yes	SPST	Gull Wing Lead	Black	4.6 mm	2.8 mm	2.5 mm	KMR4	100000 Cycle	IP40	Reel, Cut Tape, MouseReel
Tactile Switches Tact KMR421NG LFS C&K 1: £0.736 15,242In Stock	Mfr. Part No. KMR421NG LFS Mouser Part No 611-KMR421NGLFS	C&K	Tactile Switches Tact Learn More about C&K ck kmr4 tactile switches	Datasheet	15,242In Stock	Cut Tape £0.736 £0.731 £0.628 £0.608 View Reel £0.388 £0.603 £0.571 £0.55 £0.388	Min.: 1 Mult.: 1 : 6,000	Non-Illuminated	SMD/SMT	Straight	1.1 mm	Oval	OFF - (ON)	2 N	50 mA	32 VDC	1 VA	No	SPST	Gull Wing Lead	Black	4.6 mm	2.8 mm	2.5 mm	KMR4	100000 Cycle	IP40	Reel, Cut Tape
Tactile Switches Tact KMR421NG ULC LFS C&K 1: £0.766 3,520In Stock 6,000Expected 25/01/2027	Mfr. Part No. KMR421NG ULC LFS Mouser Part No 611-KMR421NGULCLFS	C&K	Tactile Switches Tact Learn More about C&K ck kmr4 tactile switches	Datasheet	3,520In Stock 6,000Expected 25/01/2027	Cut Tape £0.766 £0.666 £0.62 £0.553 View Reel £0.395 £0.512 £0.451 £0.43 £0.404 £0.395	Min.: 1 Mult.: 1 : 6,000	Non-Illuminated	SMD/SMT	Straight		Oval	OFF - (ON)	2 N	50 mA	32 VDC	1 VA	No	SPST	Gull Wing Lead	Black	4.6 mm	2.8 mm	2.5 mm	KMR4		IP40	Reel, Cut Tape
Tactile Switches Tact KMR432G LFS C&K 1: £0.578 12,795In Stock	Mfr. Part No. KMR432G LFS Mouser Part No 611-KMR432GLFS	C&K	Tactile Switches Tact Learn More about C&K ck kmr4 tactile switches	Datasheet	12,795In Stock	Cut Tape £0.578 £0.504 £0.47 £0.418 View Reel £0.285 £0.388 £0.367 £0.318 £0.285 £0.285 MouseReel Available	Min.: 1 Mult.: 1 : 6,000	Non-Illuminated	SMD/SMT	Straight	1.1 mm	Oval	OFF - (ON)	3 N	50 mA	32 VDC	1 VA	Yes	SPST	Gull Wing Lead	Black	4.6 mm	2.8 mm	2.5 mm	KMR4	300000 Cycle	IP40	Reel, Cut Tape, MouseReel
Tactile Switches Tact KMR441NGLFS C&K 1: £0.361 5,654In Stock 30,000Expected 16/10/2026	Mfr. Part No. KMR441NGLFS Mouser Part No 611-KMR441NGLFS	C&K	Tactile Switches Tact Learn More about C&K ck kmr4 tactile switches	Datasheet	5,654In Stock 30,000Expected 16/10/2026	Cut Tape £0.361 £0.342 £0.33 £0.285 Reel £0.285 MouseReel Available	Min.: 1 Mult.: 1 : 6,000	Non-Illuminated	SMD/SMT	Straight	1.1 mm	Oval	OFF - (ON)	4 N	50 mA	32 VDC	1 VA	No	SPST	Gull Wing Lead	Black	4.6 mm	2.8 mm	2.5 mm	KMR4	100000 Cycle	IP40	Reel, Cut Tape, MouseReel
Tactile Switches Tact KMR442G LFS C&K 1: £0.511 2,605In Stock	Mfr. Part No. KMR442G LFS Mouser Part No 611-KMR442GLFS	C&K	Tactile Switches Tact Learn More about C&K ck kmr4 tactile switches	Datasheet	2,605In Stock	Cut Tape £0.511 £0.495 £0.477 £0.412 View Reel £0.299 £0.376 £0.348 £0.332 £0.309 £0.299 MouseReel Available	Min.: 1 Mult.: 1 : 6,000	Non-Illuminated	SMD/SMT	Straight	1.1 mm	Oval	OFF - (ON)	4 N	50 mA	32 VDC	1 VA	Yes	SPST	Gull Wing Lead	Black	4.6 mm	2.8 mm	2.5 mm	KMR4	200000 Cycle	IP40	Reel, Cut Tape, MouseReel
Tactile Switches Tact KMR431NGLFS C&K 1: £0.428 17,975Expected 16/10/2026	Mfr. Part No. KMR431NGLFS Mouser Part No 611-KMR431NGLFS	C&K	Tactile Switches Tact Learn More about C&K ck kmr4 tactile switches	Datasheet	17,975Expected 16/10/2026	Cut Tape £0.428 £0.393 £0.376 £0.342 View Reel £0.287 £0.323 £0.308 £0.298 £0.287 £0.287 MouseReel Available	Min.: 1 Mult.: 1 : 6,000	Non-Illuminated	SMD/SMT	Straight		Oval	OFF - (ON)	3 N	50 mA	32 VDC	1 VA	No	SPST	Gull Wing Lead	Black	4.6 mm	2.8 mm	2.5 mm	KMR4		IP40	Reel, Cut Tape, MouseReel
Tactile Switches Microminiature SMT Top Actuated KMR423NG ULC LFG C&K 6,000: £0.605 72,000Factory Stock Available	Mfr. Part No. KMR423NG ULC LFG Mouser Part No 611-KMR423NGULCLFG	C&K	Tactile Switches Microminiature SMT Top Actuated Learn More about C&K ck kmr4 tactile switches	Datasheet	72,000Factory Stock Available More Info Available	Reel £0.605	Min.: 6,000 Mult.: 6,000 : 6,000	Non-Illuminated	SMD/SMT	Straight		Oval	OFF - (ON)	2 N	50 mA	32 VDC	1 VA	No	SPST	Gull Wing Lead	Black	4.6 mm	2.8 mm	2.5 mm	KMR4		IP40	Reel
Tactile Switches Tact KMR431NGULCLFS C&K 36,000: £0.625 Non-Stocked	Mfr. Part No. KMR431NGULCLFS Mouser Part No 611-KMR431NGULCLFS	C&K	Tactile Switches Tact Learn More about C&K ck kmr4 tactile switches	Datasheet	Non-Stocked	Cut Tape £0.625	Min.: 36,000 Mult.: 6,000 : 6,000	Non-Illuminated	SMD/SMT	Straight		Oval	OFF - (ON)	3 N	50 mA	32 VDC	1 VA	No	SPST	Gull Wing Lead	Black	4.6 mm	2.8 mm	2.5 mm	KMR4		IP40	Reel
Tactile Switches Tact KMR432GULCLFS C&K 36,000: £0.43 Non-Stocked	Mfr. Part No. KMR432GULCLFS Mouser Part No 611-KMR432GULCLFS	C&K	Tactile Switches Tact Learn More about C&K ck kmr4 tactile switches	Datasheet	Non-Stocked	Cut Tape £0.43	Min.: 36,000 Mult.: 6,000 : 6,000	Non-Illuminated	SMD/SMT	Straight		Oval	OFF - (ON)	3 N	50 mA	32 VDC	1 VA	Yes	SPST	Gull Wing Lead	Black	4.6 mm	2.8 mm	2.5 mm	KMR4		IP40	Reel
Tactile Switches Tact KMR433G ULC LFG C&K 6,000: £0.605 Non-Stocked Lead-Time 13 Weeks	Mfr. Part No. KMR433G ULC LFG Mouser Part No 611-KMR433GULCLFG	C&K	Tactile Switches Tact Learn More about C&K ck kmr4 tactile switches	Datasheet	Non-Stocked Lead-Time 13 Weeks	Reel £0.605	Min.: 6,000 Mult.: 6,000 : 6,000	Non-Illuminated	SMD/SMT	Straight		Oval	OFF - (ON)	3 N	50 mA	32 VDC	1 VA	Yes	SPST	Gull Wing Lead	Black	4.6 mm	2.8 mm	2.5 mm	KMR4		IP40	Reel
Tactile Switches Tact KMR433NGLFG C&K 36,000: £0.542 Non-Stocked	Mfr. Part No. KMR433NGLFG Mouser Part No 611-KMR433NGLFG	C&K	Tactile Switches Tact Learn More about C&K ck kmr4 tactile switches	Datasheet	Non-Stocked	Cut Tape £0.542	Min.: 36,000 Mult.: 6,000 : 6,000	Non-Illuminated	SMD/SMT	Straight		Oval	OFF - (ON)	3 N	50 mA	32 VDC	1 VA	No	SPST	Gull Wing Lead	Black	4.6 mm	2.8 mm	2.5 mm	KMR4		IP40	Reel
Tactile Switches Tact KMR433NGULCLFG C&K 36,000: £0.557 Non-Stocked	Mfr. Part No. KMR433NGULCLFG Mouser Part No 611-KMR433NGULCLFG	C&K	Tactile Switches Tact Learn More about C&K ck kmr4 tactile switches	Datasheet	Non-Stocked	Cut Tape £0.557	Min.: 36,000 Mult.: 6,000 : 6,000	Non-Illuminated	SMD/SMT	Straight		Oval	OFF - (ON)	3 N	50 mA	32 VDC	1 VA	No	SPST	Gull Wing Lead	Black	4.6 mm	2.8 mm	2.5 mm	KMR4		IP40	Reel
Tactile Switches Tact KMR441GULCLFS C&K 18,000: £0.423 Non-Stocked	Mfr. Part No. KMR441GULCLFS Mouser Part No 611-KMR441GULCLFS	C&K	Tactile Switches Tact Learn More about C&K ck kmr4 tactile switches	Datasheet	Non-Stocked	£0.423	Min.: 18,000 Mult.: 6,000	Non-Illuminated	SMD/SMT	Straight		Oval	OFF - (ON)	4 N	50 mA	32 VDC	1 VA	Yes	SPST	Gull Wing Lead	Black	4.6 mm	2.8 mm	2.5 mm	KMR4		IP40
Tactile Switches Tact KMR442GULCLFS C&K 18,000: £0.43 Non-Stocked	Mfr. Part No. KMR442GULCLFS Mouser Part No 611-KMR442GULCLFS	C&K	Tactile Switches Tact Learn More about C&K ck kmr4 tactile switches	Datasheet	Non-Stocked	£0.43	Min.: 18,000 Mult.: 6,000	Non-Illuminated	SMD/SMT	Straight		Oval	OFF - (ON)	4 N	50 mA	32 VDC	1 VA	Yes	SPST	Gull Wing Lead	Black	4.6 mm	2.8 mm	2.5 mm	KMR4		IP40

KMR4 Microminiature SMT Tactile Switches

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