Tactile Switches
KMR 4 Series
Microminiature SMT Top Actuated
Features/Benefits Typical Applications
Long Life version Automotive
4 actuation forces Cellular phones
Optional ground pin Industrial electronics
Ultra low current capabilities Medical equipment
Excellent tactile feel
B
Specification Electrical Silver Gold
FUNCTION: momentary action MAXIMUM POWER: 1 VA 0.2 VA
CONTACT ARRANGEMENT: 1 make contact = SPST, N.O. MAXIMUM VOLTAGE: 32 VDC 32 VDC
MINIMUM VOLTAGE: 20 mVDC 20 mVDC
TERMINALS: Gullwing type for SMT
MAXIMUM CURRENT: 50 mA 10 mA
MINIMUM CURRENT: 1 mA* 1 mA*
Mechanical
DIELECTRIC STRENGTH: 250 Vrms
Type G and NG CONTACT RESISTANCE: 100 m
(except gold INSULATION RESISTANCE: 1G
Operating Operating
version G only) force life Travel (mm) BOUNCE TIME: 3 ms
See description N (grs) (cycles)
*For ULC version minimum current is 1A at 1.8 VDC
below
KMR421 LFS 2.0 (200) 0.50 200 000 0.25 mm 0.1
Environmental Silver Gold
KMR431 LFS 3.0 (300) 0.75 150 000 0.30 mm 0.1
KMR431 ULC LFS 3.0 (300) 0.75 150 000 0.30 mm 0.1
OPERATING TEMPERATURE: -40C to 85C -40C to 125C
KMR432 LFS 3.0 (300) 0.75 300 000 0.30 mm 0.1
STORAGE TEMPERATURE: -55C to 85C -55C to 125C
KMR432 ULC LFS 3.0 (300) 0.75 300 000 0.30 mm 0.1
KMR441 LFS 4.0 (400) 1.00 100 000 0.35 mm 0.1
Process
KMR441 ULC LFS 4.0 (400) 1.00 100 000 0.35 mm 0.1
Infrared Reflow Soldering in accordance with IEC61760-1
KMR442 LFS 4.0 (400) 1.00 200 000 0.35 mm 0.1
KMR442 ULC LFS 4.0 (400) 1.00 200 000 0.35 mm 0.1
Packaging
In reels of 6,000 pieces for KMR 4
External diameter 330 mm 2 mm
TACTILE FEELING: for KMR 4 series: 25%
NOTE: Specifications listed above are for switches with standard options.
For information on specific and custom switches, consult Customer Service Center.
Part Number Description
For any part number different from those listed above, please consult your local representative.
K M R 4 3 1 N G U L C L F S
Total height
4 2,5 mm LFS Lead free compatible, silver plated
LFG Lead free compatible, gold plated
Actuation Force
2 2 N (200 grams)
3 3 N (300 grams)
4 4 N (400 grams)
Low Current capability
Void Under standard specification
Contact Material
ULC Low current
1 Silver
2 Silver long life
Grounding option
3 Gold
G Ground pin
NG No Ground pin
Dimensions are shown: Inch (mm)
Specifications and dimensions subject to change
www.ck-components.com
B11KMR 4 Series
Microminiature Tact Switch for SMT
KMR 4 Series - 2.5 mm height PCB layout shown with ground pin option
B
3,2
1,7
5
B
1
3
B
4,6
4
2
4,2
5
2,11
TAPE & REEL
DE-REELING DIRECTION
SECTION A-A
OUT OF THE TAPE
0
6 max
2,75 0,1 4 0,1 2 0,05 1,5 0,1
B
A
A
0
6 max
B
0,292 0,02
GROUND TERMINAL
3,03 0,1
Dimensions are shown: Inch (mm)
Specifications and dimensions subject to change
www.ck-components.com
B12
Tactile Switches
2,8 0,2
0,6 0,6
+0,3
12
-0,1
5,5 0,05
1,75
1,61 1,4 0,15
2,2
2,5 0,2
0,55
2,45
0,6
1
2,6
4,95 0,1