Switches

KSR551GLFS

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Littelfuse/Commercial Vehicle Products

SWITCH TACTILE SPST-NO 0.05A 32V

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Switches

KSR551GLFS

Active

Littelfuse/Commercial Vehicle Products

SWITCH TACTILE SPST-NO 0.05A 32V

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Documentsksr tactile

Specifications Series Pricing Description Documents

Technical Specifications

Parameters and characteristics for this part

Specification	KSR551GLFS

Actuator Height off PCB, Vertical [z]	2.5 mm
Actuator Material	Rubber
Actuator Orientation	Top Actuated
Actuator Type	Standard
Circuit	SPST-NO
Contact Rating @ Voltage	0.05 A
Illumination	Non-Illuminated
Ingress Protection	IP40
Mechanical Life	100000 Cycles
Mounting Type	Surface Mount
Operating Force	450 gf
Operating Temperature [Max]	85 °C
Operating Temperature [Min]	-40 °C
Outline [x]	6 mm
Outline [y]	3.8 mm
Switch Function	Off-Mom
Switch Travel	0.5 mm
Termination Style	Gull Wing

Ksr0 Series Series

Subminiature Tact Switch for SMT

Part	Mounting Type	Actuator Orientation	Contact Rating @ Voltage	Actuator Height off PCB, Vertical [z]	Circuit	Termination Style	Ingress Protection	Switch Function	Illumination	Switch Travel	Actuator Material	Actuator Type	Operating Force	Mechanical Life	Operating Temperature [Max]	Operating Temperature [Min]	Outline [x]	Outline [y]
Littelfuse/Commercial Vehicle Products KSR232G LFS	Surface Mount	Top Actuated	0.05 A	2.5 mm	SPST-NO	Gull Wing	IP50	Off-Mom	Non-Illuminated	0.35 mm	Rubber	Standard	300 gf	200000 Cycles	85 °C	-40 °C	6 mm	3.8 mm
Littelfuse/Commercial Vehicle Products KSR231J	Surface Mount	Top Actuated	0.05 A	2.5 mm	SPST-NO	J Lead	IP50	Off-Mom	Non-Illuminated	0.35 mm	Rubber	Standard	300 gf	200000 Cycles	85 °C	-40 °C	6 mm	3.8 mm
Littelfuse/Commercial Vehicle Products KSR253GLFG	Surface Mount	Top Actuated	0.01 A 32 VDC	2.5 mm	SPST-NO	Gull Wing	IP50	Off-Mom	Non-Illuminated	0.5 mm	Rubber	Standard	450 gf	100000 Cycles	125 °C	-40 °C	6 mm	3.8 mm
Littelfuse/Commercial Vehicle Products KSR553GLFG	Surface Mount	Top Actuated	0.01 A 32 VDC	2.5 mm	SPST-NO	Gull Wing		Off-Mom	Non-Illuminated			Standard		100000 Cycles	125 °C	-40 °C	6 mm	3.8 mm
Littelfuse/Commercial Vehicle Products KSR211J	Surface Mount	Top Actuated	0.05 A	2.5 mm	SPST-NO	J Lead	IP50	Off-Mom	Non-Illuminated	0.25 mm	Rubber	Standard	180 gf	100000 Cycles	85 °C	-40 °C	6 mm	3.8 mm
Littelfuse/Commercial Vehicle Products KSR212GLFS
Littelfuse/Commercial Vehicle Products KSR211GLFS	Surface Mount	Top Actuated	0.05 A	2.5 mm	SPST-NO	Gull Wing	IP50	Off-Mom	Non-Illuminated	0.25 mm	Rubber	Standard	180 gf	100000 Cycles	85 °C	-40 °C	6 mm	3.8 mm
Littelfuse/Commercial Vehicle Products KSR233G LFG	Surface Mount	Top Actuated	0.01 A 32 VDC	2.5 mm	SPST-NO	Gull Wing	IP50	Off-Mom	Non-Illuminated	0.35 mm	Rubber	Standard	300 gf	100000 Cycles	125 °C	-40 °C	6 mm	3.8 mm
Littelfuse/Commercial Vehicle Products KSR251GLFS	Surface Mount	Top Actuated	0.05 A	2.5 mm	SPST-NO	Gull Wing	IP50	Off-Mom	Non-Illuminated	0.5 mm	Rubber	Standard	450 gf	100000 Cycles	85 °C	-40 °C	6 mm	3.8 mm
Littelfuse/Commercial Vehicle Products KSR551GLFS	Surface Mount	Top Actuated	0.05 A	2.5 mm	SPST-NO	Gull Wing	IP40	Off-Mom	Non-Illuminated	0.5 mm	Rubber	Standard	450 gf	100000 Cycles	85 °C	-40 °C	6 mm	3.8 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	$ 0.93
		10	$ 0.90
		25	$ 0.84
		100	$ 0.73
		250	$ 0.66
		500	$ 0.61
		1000	$ 0.57
	Digi-Reel®	1	$ 0.93
		10	$ 0.90
		25	$ 0.84
		100	$ 0.73
		250	$ 0.66
		500	$ 0.61
		1000	$ 0.57
	Tape & Reel (TR)	2500	$ 0.27

Description

General part information

Ksr0 Series Series

The KSR series subminiature tact switch for SMT has 4 actuation forces and is an N.O. (normally open) and N.C. (normally closed) switch. With detect type available, C&K’s KSR is ideal for industrial, medical and automotive applications that need emergency stop functionality should accidents occur.

Documents

Technical documentation and resources

ksr

Datasheet

tactile

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