KMR 2 Series
Microminiature SMT Top Actuated
Features/Benefits
• Small footprint
• 4 actuation forces
• Excellent tactile feel
• Ultra low current capabilities
• IP40
Typical Applications
• Automotive
• Industrial electronics
• Medical equipment
B
Electrical
FUNCTION: momentary action
CONTACT ARRANGEMENT: 1 make contact = SPST, N.O.
TERMINALS: Gullwing type for SMT
MAXIMUM POWER:
MAXIMUM VOLTAGE:
MINIMUM VOLTAGE:
MAXIMUM CURRENT:
MINIMUM CURRENT:
DIELECTRIC STRENGTH:
CONTACT RESISTANCE:
INSULATION RESISTANCE:
BOUNCE TIME:
Mechanical
Operating
force
N (grs)
Type G and NG
See description
below
KMR211
KMR211
KMR213
KMR213
KMR221
KMR221
KMR223
KMR223
KMR231
KMR231
KMR232
KMR232
KMR233
KMR233
KMR241
KMR241
KMR242
KMR242
KMR243
KMR243
LFS
ULC LFS
LFG
ULC LFG
LFS
ULC LFS
LFG
ULC LFG
LFS
ULC LFS
LFS
ULC LFS
LFG
ULC LFG
LFS
ULC LFS
LFS
ULC LFS
LFG
ULC LFG
1.2
1.2
1.2
1.2
2.0
2.0
2.0
2.0
3.0
3.0
3.0
3.0
3.0
3.0
4.0
4.0
4.0
4.0
4.0
4.0
(120)
(120)
(120)
(120)
(200)
(200)
(200)
(200)
(300)
(300)
(300)
(300)
(300)
(300)
(400)
(400)
(400)
(400)
(400)
(400)
±
±
±
±
±
±
±
±
±
±
±
±
±
±
±
±
±
±
±
±
0.30
0.30
0.30
0.30
0.50
0.50
0.50
0.50
0.75
0.75
0.75
0.75
0.75
0.75
1.00
1.00
1.00
1.00
1.00
1.00
Operating
life
(cycles)
200,000
200,000
200,000
200,000
200,000
200,000
200,000
200,000
150,000
150,000
300,000
300,000
150,000
150,000
100,000
100,000
200,000
200,000
100,000
100,000
Travel (mm)
0.20
0.20
0.20
0.20
0.25
0.25
0.25
0.25
0.25
0.25
0.25
0.25
0.25
0.25
0.30
0.30
0.30
0.30
0.30
0.30
mm
mm
mm
mm
mm
mm
mm
mm
mm
mm
mm
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
0.1
0.1
0.1
0.1
0.1
0.1
0.1
0.1
0.1
0.1
0.1
Silver
Gold
1 VA
32 VDC
20 mVDC
50 mA
1 mA*
≥ 250 Vrms
≤ 100 mΩ
≥ 1GΩ
≤ 3 ms
0.2 VA
32 VDC
20 mVDC
10 mA
1 mA*
*For ULC version minimum current is 1µA at 1.8 VDC
Environmental
Silver
Gold
OPERATING TEMPERATURE: -40˚C to 85˚C
STORAGE TEMPERATURE: -55˚C to 85˚C
-40˚C to 125˚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
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: 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)
Contact Material
1 Silver
2 Silver long life*
3 Gold
Low Current capability
Void Under standard specification
ULC Low current
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
B–17
www.ckswitches.com
Tactile Switches
Specification
KMR 2 Series
Microminiature Tact Switch for SMT
G - Ground Pin
0,04 0,03
1,4 0,15
1,9 0,2
ELECTRICAL DIAGRAM
0,1
0,2 0,1
4
1
3
2
4
1
5
3,2
1,7
0,6
1
2,2
1,61
2,6
2
2,45
0,6
3
2,8 0,2
1
0,6
0,55
5
4
RECOMMENDED LAYOUT
2,11
1,4 0,15
1,9 0,2
NG - No Ground Pin
0,1
3
4,6
2
ELECTRICAL DIAGRAM
4,2 0,2
3
2
2,2
1,61
1
0,6
1
2,6
4
2,8 0,2
0,6
RECOMMENDED LAYOUT
0,6
3,2
5
2,11
TAPE & REEL
DE-REELING DIRECTION
SECTION A-A
OUT OF THE TAPE
70 max
4 ± 0,1
ø 1,5 ± 0,1
4,95 ± 0,1
5,5 ± 0,05
+0,3
2 ± 0,05
B
1,75
2,13 ± 0,1
12 -0,1
Tactile Switches
B
4,6
4,2 0,2
A
A
60 max
0,292 ± 0,02
+0,25
B
GROUND TERMINAL
ø 1,5 0
3,03 ± 0,1
DIRECTION OF FEED
Dimensions are shown: mm
Specifications and dimensions subject to change
24 Aug 21
B–18
www.ckswitches.com