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
Mouser Electronics
Authorized Distributor
Click to View Pricing, Inventory, Delivery & Lifecycle Information:
C&K Components
:
KMR442NG LFS KMR431NG ULC LFS KMR442G ULC LFS KMR442NG ULC LFS KMR432G LFS KMR432NG
LFS KMR431G ULC LFS KMR441NG LFS KMR421NG LFS KMR431NG LFS KMR421G LFS KMR442G LFS
KMR431G LFS KMR441G LFS KMR441G ULC LFS KMR432NG ULC LFS KMR432G ULC LFS KMR441NG ULC
LFS
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