Switches

KMR421NGLFS

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Littelfuse/Commercial Vehicle Products

SWITCH TACTILE SPST-NO 0.05A 32V

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Switches

KMR421NGLFS

Active

Littelfuse/Commercial Vehicle Products

SWITCH TACTILE SPST-NO 0.05A 32V

Deep-Dive with AI

DocumentsDatasheet kmr

Specifications Series Pricing Description Documents

Technical Specifications

Parameters and characteristics for this part

Specification	KMR421NGLFS

Actuator Height off PCB, Vertical [z]	2.5 mm
Actuator Orientation	Top Actuated
Actuator Type	Standard
Circuit	SPST-NO
Contact Rating @ Voltage	0.05 A
Illumination	Non-Illuminated
Mechanical Life	200000 Cycles
Mounting Type	Surface Mount
Operating Force	200 gf
Operating Temperature [Max]	85 °C
Operating Temperature [Min]	-40 °C
Outline [x]	4.6 mm
Outline [y]	2.8 mm
Switch Function	Off-Mom
Switch Travel	0.25 mm
Termination Style	Gull Wing

Kmr40 Series Series

Microminiature SMT Top Actuated

Part	Actuator Height off PCB, Vertical [z]	Features	Actuator Type	Switch Function	Mechanical Life	Circuit	Actuator Orientation	Operating Force	Switch Travel	Outline [x]	Outline [y]	Operating Temperature [Max]	Operating Temperature [Min]	Mounting Type	Illumination	Termination Style	Contact Rating @ Voltage	Switch Travel [custom]
Littelfuse/Commercial Vehicle Products KMR442G ULC LFS	2.5 mm	Grounding Pin	Standard	Off-Mom	200000 Cycles	SPST-NO	Top Actuated	400 gf	0.35 mm	4.6 mm	2.8 mm	85 °C	-40 °C	Surface Mount	Non-Illuminated	Gull Wing	0.05 A
Littelfuse/Commercial Vehicle Products KMR421G LFS	2.5 mm	Grounding Pin	Standard	Off-Mom	200000 Cycles	SPST-NO	Top Actuated	200 gf	0.25 mm	4.6 mm	2.8 mm	85 °C	-40 °C	Surface Mount	Non-Illuminated	Gull Wing	0.05 A
Littelfuse/Commercial Vehicle Products KMR421GULCLFS	2.5 mm	Grounding Pin	Standard	Off-Mom	200000 Cycles	SPST-NO	Top Actuated	200 gf	0.25 mm	4.6 mm	2.8 mm	85 °C	-40 °C	Surface Mount	Non-Illuminated	Gull Wing	0.05 A
Littelfuse/Commercial Vehicle Products KMR421GLFS
Littelfuse/Commercial Vehicle Products KMR421NGLFS	2.5 mm		Standard	Off-Mom	200000 Cycles	SPST-NO	Top Actuated	200 gf	0.25 mm	4.6 mm	2.8 mm	85 °C	-40 °C	Surface Mount	Non-Illuminated	Gull Wing	0.05 A
Littelfuse/Commercial Vehicle Products KMR433NG ULC LFG	2.5 mm		Standard	Off-Mom	300000 Cycles	SPST-NO	Top Actuated	300 gf		4.6 mm	2.8 mm	85 °C	-40 °C	Surface Mount	Non-Illuminated	Gull Wing	0.01 A 32 VDC	0.3 mm
Littelfuse/Commercial Vehicle Products KMR431GULCLFS	2.5 mm	Grounding Pin	Standard	Off-Mom	150000 Cycles	SPST-NO	Top Actuated	300 gf		4.6 mm	2.8 mm	85 °C	-40 °C	Surface Mount	Non-Illuminated	Gull Wing	0.05 A	0.3 mm
Littelfuse/Commercial Vehicle Products KMR442NGLFS	2.5 mm		Standard	Off-Mom	200000 Cycles	SPST-NO	Top Actuated	400 gf	0.35 mm	4.6 mm	2.8 mm	85 °C	-40 °C	Surface Mount	Non-Illuminated	Gull Wing	0.05 A
Littelfuse/Commercial Vehicle Products KMR431NG ULC LFS	2.5 mm		Standard	Off-Mom	150000 Cycles	SPST-NO	Top Actuated	300 gf		4.6 mm	2.8 mm	85 °C	-40 °C	Surface Mount	Non-Illuminated	Gull Wing	0.05 A	0.3 mm
Littelfuse/Commercial Vehicle Products KMR433GULCLFG	2.5 mm	Grounding Pin	Standard	Off-Mom	300000 Cycles	SPST-NO	Top Actuated	300 gf		4.6 mm	2.8 mm	85 °C	-40 °C	Surface Mount	Non-Illuminated	Gull Wing	0.01 A 32 VDC	0.3 mm

Pricing

Prices provided here are for design reference only. For realtime values and availability, please visit the distributors directly

Distributor	Package	Quantity	$

Digikey	Cut Tape (CT)	1	$ 0.76
		10	$ 0.62
		25	$ 0.57
		100	$ 0.50
		250	$ 0.46
		500	$ 0.43
		1000	$ 0.40
		2500	$ 0.37
	Digi-Reel®	1	$ 0.76
		10	$ 0.62
		25	$ 0.57
		100	$ 0.50
		250	$ 0.46
		500	$ 0.43
		1000	$ 0.40
		2500	$ 0.37
	Tape & Reel (TR)	6000	$ 0.35
		12000	$ 0.32

Description

General part information

Kmr40 Series Series

The KMR4 series microminiature SMT top actuated switch from C&K has ultra-low current capabilities and is ideal for industrial, medical and automotive applications. It is a long-lasting switch with an excellent tactile feel, even when used in the harshest environments.