KMR4 Series Micro Mini Top Acuated Datasheet by C&K

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* Silver long life is available in 3N and 4N actuation force. For other versions,
please contact Customer Service.
B–13
Dimensions are shown: mm
Specifications and dimensions subject to change
www.ckswitches.com
Tactile Switches
8 jun 16
Features/Benefits
Small footprint
4 actuation forces
Excellent tactile feel
Ultra low current capabilities
IP40
KMR 4 Series
Microminiature SMT Top Actuated
Typical Applications
Automotive
Industrial electronics
Medical equipment
Electrical
Silver Gold
MAXIMUM POWER: 1 VA 0.2 VA
MAXIMUM VOLTAGE: 32 VDC 32 VDC
MINIMUM VOLTAGE: 20 mVDC 20 mVDC
MAXIMUM CURRENT: 50 mA 10 mA
MINIMUM CURRENT: 1 mA* 1 mA*
DIELECTRIC STRENGTH: ≥ 250 Vrms
CONTACT RESISTANCE: ≤ 100 mΩ
INSULATION RESISTANCE: ≥ 1GΩ
BOUNCE TIME: ≤ 3 ms
*For ULC version minimum current is 1µA at 1.8 VDC
Environmental
Silver Gold
OPERATING TEMPERATURE: -40˚C to 85˚C -40˚C to 125˚C
STORAGE TEMPERATURE: -55˚C to 85˚C -55˚C to 125˚C
Process
Soldering: Lead free reflow soldering process in accordance with
IEC 61760-1.
Packaging
In reels of 6,000 pieces
External diameter 330 mm ± 2 mm
NOTE: Specifications listed above are for switches with standard options.
For information on specific and custom switches, consult Customer Service Center.
Specification
FUNCTION: momentary action
CONTACT ARRANGEMENT: 1 make contact = SPST, N.O.
TERMINALS: Gullwing type for SMT
Mechanical
Total height
4 2,5 mm LFS Lead free compatible, silver plated
LFG Lead free compatible, gold plated
Actuation Force
1 1.2 N (120 grams)
2 2 N (200 grams)
3 3 N (300 grams)
4 4 N (400 grams)
K M R 4
Contact Material
1 Silver
2 Silver long life*
3 Gold Grounding option
G Ground pin
NG No Ground pin
Low Current capability
Void Under standard specification
ULC Low current
Part Number Description
For any part number different from those listed above, please consult your local representative.
TACTILE FEELING: KMR 4 series with actuation force in 2N - 3N - 4N: ≥ 25%
KMR 4 series with actuation force in 1.2N: ≥ 20%
KMR411 LFS 1.2 (120) ± 0.30 100,000 0.20 mm ± 0.1
KMR411 ULC LFS 1.2 (120) ± 0.30 100,000 0.20 mm ± 0.1
KMR413 LFG 1.2 (120) ± 0.30 100,000 0.20 mm ± 0.1
KMR413 ULC LFG 1.2 (120) ± 0.30 100,000 0.20 mm ± 0.1
KMR421 LFS 2.0 (200) ± 0.50 100,000 0.25 mm ± 0.1
KMR421 ULC LFS 2.0 (200) ± 0.50 100,000 0.25 mm ± 0.1
KMR423 LFG 2.0 (200) ± 0.50 100,000 0.25 mm ± 0.1
KMR423 ULC LFG 2.0 (200) ± 0.50 100,000 0.25 mm ± 0.1
KMR431 LFS 3.0 (300) ± 0.75 100,000 0.25 mm ± 0.1
KMR431 ULC LFS 3.0 (300) ± 0.75 100,000 0.25 mm ± 0.1
KMR432 LFS 3.0 (300) ± 0.75 300,000 0.25 mm ± 0.1
KMR432ULC LFS 3.0 (300) ± 0.75 300,000 0.25 mm ± 0.1
KMR433 LFG 3.0 (300) ± 0.75 100,000 0.25 mm ± 0.1
KMR433ULC LFG 3.0 (300) ± 0.75 100,000 0.25 mm ± 0.1
KMR441 LFS 4.0 (400) ± 1.00 100,000 0.30 mm ± 0.1
KMR441 ULC LFS 4.0 (400) ± 1.00 100,000 0.30 mm ± 0.1
KMR442 LFS 4.0 (400) ± 1.00 200,000 0.30 mm ± 0.1
KMR442 ULC LFS 4.0 (400) ± 1.00 200,000 0.30 mm ± 0.1
KMR443 LFG 4.0 (400) ± 1.00 100,000 0.30 mm ± 0.1
KMR443 ULC LFG 4.0 (400) ± 1.00 100,000 0.30 mm ± 0.1
Type G and NG
See description
below
Operating
force
N (grs)
Operating
life
(cycles) Travel (mm)
B–14
Dimensions are shown: mm
Specifications and dimensions subject to change
www.ckswitches.com
Tactile Switches
B
8 jun 16
2,11
1,61
2,6
0,6
1
5
2,45
0,55
2,2
2,8
0,60,6
1,7
3,2
4,6
4,2
2,5
1,4
B
B
AA
+0,3
-0,1
ø
GROUND TERMINAL
2,75 ± 0,1
0,292 ± 0,02
3,03 ± 0,1
1,75
5,5 ± 0,05
12
4 ± 0,1 2 ± 0,05 1,5 ± 0,1
6
0
max
4,95 ± 0,1
SECTION A-A
DE-REELING DIRECTION
OUT OF THE TAPE
6
0
max
KMR 4 Series
Microminiature Tact Switch for SMT
TAPE & REEL
KMR 4 Series - 2.5 mm height PCB layout shown with ground pin option

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