KMR 4 Series
Microminiature SMT Top Actuated
Features/Benefits
•
Long Life version
•
4 actuation forces
•
Optional ground pin
•
Ultra low current capabilities
•
Excellent tactile feel
Typical Applications
•
Automotive
•
Cellular phones
•
Industrial electronics
•
Medical equipment
B
Specification
FUNCTION: momentary action
CONTACT ARRANGEMENT: 1 make contact = SPST, N.O.
TERMINALS: Gullwing type for SMT
Electrical
MAXIMUM POWER:
MAXIMUM VOLTAGE:
MINIMUM VOLTAGE:
MAXIMUM CURRENT:
MINIMUM CURRENT:
DIELECTRIC STRENGTH:
CONTACT RESISTANCE:
INSULATION RESISTANCE:
BOUNCE TIME:
Tactile Switches
Silver
1 VA
32 VDC
20 mVDC
50 mA
1 mA*
≥
250 Vrms
≤
100 mΩ
≥
1GΩ
≤
3 ms
Gold
0.2 VA
32 VDC
20 mVDC
10 mA
1 mA*
Mechanical
Type G and NG
(except gold
version G only)
See description
below
KMR421 LFS
KMR431 LFS
KMR431 ULC LFS
KMR432 LFS
KMR432 ULC LFS
KMR441 LFS
KMR441 ULC LFS
KMR442 LFS
KMR442 ULC LFS
Operating
force
N (grs)
2.0
3.0
3.0
3.0
3.0
4.0
4.0
4.0
4.0
(200)
(300)
(300)
(300)
(300)
(400)
(400)
(400)
(400)
±
±
±
±
±
±
±
±
±
0.50
0.75
0.75
0.75
0.75
1.00
1.00
1.00
1.00
Operating
life
(cycles)
200
150
150
300
300
100
100
200
200
000
000
000
000
000
000
000
000
000
Travel (mm)
*For ULC version minimum current is 1µA at 1.8 VDC
0.25
0.30
0.30
0.30
0.30
0.35
0.35
0.35
0.35
mm
mm
mm
mm
mm
mm
mm
mm
mm
±
±
±
±
±
±
±
±
±
0.1
0.1
0.1
0.1
0.1
0.1
0.1
0.1
0.1
Environmental
OPERATING TEMPERATURE:
STORAGE TEMPERATURE:
Silver
-40˚C to 85˚C
-55˚C to 85˚C
Gold
-40˚C to 125˚C
-55˚C to 125˚C
Process
Infrared Reflow Soldering in accordance with IEC61760-1
Packaging
In reels of 6,000 pieces for KMR 4
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.
TACTILE FEELING: for KMR 4 series:
≥
25%
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
ULC
Low current
Grounding option
G
Ground pin
NG
No Ground pin
Contact Material
1
Silver
2
Silver long life
3
Gold
Dimensions are shown: mm
Specifications and dimensions subject to change
B–11
www.ck-components.com
KMR 4 Series
Microminiature Tact Switch for SMT
KMR 4 Series - 2.5 mm height
PCB layout shown with ground pin option
B
Tactile Switches
4,6
4,2
0,6
0,6
2,11
3,2
1,7
0,55
2,45
5
1
0,6
2,6
1,61
2,2
2,8
1,4
2,5
TAPE & REEL
DE-REELING DIRECTION
OUT OF THE TAPE
SECTION A-A
6
0
max
2,75 ± 0,1
4 ± 0,1
2 ± 0,05
ø 1,5 ± 0,1
12
-0,1
5,5 ± 0,05
+0,3
1,75
B
A
A
6
0
max
0,292 ± 0,02
GROUND TERMINAL
3,03 ± 0,1
B
Dimensions are shown: mm
Specifications and dimensions subject to change
B–12
www.ck-components.com
4,95 ± 0,1
Embedded System
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