KMR 2 Series
Microminiature SMT Top Actuated
Features/Benefits
Typical Applications
•
•
•
Automotive
•
•
•
•
•
Small footprint
Industrial electronics
Medical equipment
4 actuation forces
Excellent tactile feel
Ultra low current capabilities
IP40
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:
1 mA*
1 mA*
Mechanical
≥ 250 Vrms
≤ 100 mΩ
≥ 1GΩ
Operating
force
N (grs)
Operating
life
(cycles)
Type G and NG
See description
below
Travel (mm)
BOUNCE TIME:
≤ 3 ms
KMR211 LFS
KMR211 ULC LFS
KMR213 LFG
KMR213 ULC LFG
KMR221 LFS
KMR221 ULC LFS
KMR223 LFG
KMR223 ULC LFG
KMR231 LFS
KMR231 ULC LFS
KMR232 LFS
KMR232 ULC LFS
KMR233 LFG
KMR233 ULC LFG
KMR241 LFS
1.2 (120) 0.30
1.2 (120) 0.30
1.2 (120) 0.30
1.2 (120) 0.30
2.0 (200) 0.50
2.0 (200) 0.50
2.0 (200) 0.50
2.0 (200) 0.50
3.0 (300) 0.75
3.0 (300) 0.75
3.0 (300) 0.75
3.0 (300) 0.75
3.0 (300) 0.75
3.0 (300) 0.75
4.0 (400) 1.00
4.0 (400) 1.00
4.0 (400) 1.00
4.0 (400) 1.00
4.0 (400) 1.00
4.0 (400) 1.00
200,000 0.20 mm
200,000 0.20 mm
200,000 0.20 mm
200,000 0.20 mm
200,000 0.25 mm
200,000 0.25 mm
200,000 0.25 mm
200,000 0.25 mm
150,000 0.25 mm
150,000 0.25 mm
300,000 0.25 mm
300,000 0.25 mm
150,000 0.25 mm
150,000 0.25 mm
100,000 0.30 mm
100,000 0.30 mm
200,000 0.30 mm
200,000 0.30 mm
100,000 0.30 mm
100,000 0.30 mm
0.1
0.1
0.1
0.1
0.1
0.1
0.1
0.1
0.1
0.1
0.1
0.1
0.1
0.1
0.1
0.1
0.1
0.1
0.1
0.1
*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 7,000 pieces
KMR241 ULC LFS
KMR242 LFS
KMR242 ULC LFS
KMR243 LFG
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.
KMR243 ULC LFG
TACTILE FEELING:
KMR 2 series with actuation force in 2N - 3N - 4N: ≥ 30%
KMR 2 series with actuation force in 1.2N: ≥ 20%
Part Number Description
For any part number different from those listed above, please consult your local representative.
K
M
R
2
Total height
2 1,9 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)
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
* Silver long life is available in 3N and 4N actuation force. For other versions, please contact Customer Service.
Dimensions are shown: mm
Specifications and dimensions subject to change
24 Aug 21
www.ckswitches.com
B–17
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