KMR 4 Series
Microminiature SMT Top Actuated
Features/Benefits
Typical Applications
•
•
•
•
Automotive
•
•
•
•
•
Long Life version
Cellular phones
Industrial electronics
Medical equipment
4 actuation forces
Optional ground pin
Ultra low current capabilities
Excellent tactile feel
B
Electrical
Silver
Gold
Specification
MAXIMUM POWER:
1 VA
32 VDC
20 mVDC
50 mA
0.2 VA
32 VDC
20 mVDC
10 mA
FUNCTION: momentary action
CONTACT ARRANGEMENT: 1 make contact = SPST, N.O.
TERMINALS: Gullwing type for SMT
MAXIMUM VOLTAGE:
MINIMUM VOLTAGE:
MAXIMUM CURRENT:
MINIMUM CURRENT:
DIELECTRIC STRENGTH:
CONTACT RESISTANCE:
INSULATION RESISTANCE:
BOUNCE TIME:
1 mA*
1 mA*
Mechanical
≥ 250 Vrms
≤ 100 mΩ
≥ 1GΩ
Type G and NG
(except gold
version G only)
See description
below
Operating
force
N (grs)
Operating
life
(cycles)
Travel (mm)
≤ 3 ms
*For ULC version minimum current is 1µA at 1.8 VDC
KMR421 LFS
KMR431 LFS
2.0 (200) 0.50 200 000 0.25 mm 0.1
3.0 (300) 0.75 150 000 0.30 mm 0.1
Environmental
Silver
Gold
KMR431 ULC LFS 3.0 (300) 0.75 150 000 0.30 mm 0.1
KMR432 LFS 3.0 (300) 0.75 300 000 0.30 mm 0.1
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
KMR441 ULC LFS 4.0 (400) 1.00 100 000 0.35 mm 0.1
KMR442 LFS 4.0 (400) 1.00 200 000 0.35 mm 0.1
OPERATING TEMPERATURE:
STORAGE TEMPERATURE:
-40˚C to 85˚C -40˚C to 125˚C
-55˚C to 85˚C -55˚C to 125˚C
Process
Infrared Reflow Soldering in accordance with IEC61760-1
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.
N
G
U
L
C
L
F
S
K
M
R
4
3
1
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
Contact Material
1 Silver
2 Silver long life
3 Gold
Grounding option
G Ground pin
NG No Ground pin
Dimensions are shown: Inch (mm)
Specifications and dimensions subject to change
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