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B–9
Dimensions shown in: mm (inch)
Specifications and dimensions subject to change
Tactile Switches
B
Features/Benefits
•Long Life version
•4 actuation forces
•Optional ground pin
•Ultra low current capabilities
•Excellent tactile feel
KMR 2 Series
Microminiature SMT Top Actuated
Typical Applications
•Automotive
•Cellular phones
•Industrial electronics
•Medical equipment
Electrical Silver Gold
MAXIMUM POWER: 1 VA 0.2 VA
MAXIMUM VOLTAGE: 32 VDC 32 VDC
MINIMUM VOLTAGE: 20 mVDC 20 mVDC
MAXIMUM CURRENT: 50 mA 10 mA
MINIMUM CURRENT: 1 mA* 1 mA*
DIELECTRIC STRENGTH: ≥250 Vrms
CONTACT RESISTANCE: ≤100 mΩ
INSULATION RESISTANCE: ≥1GΩ
BOUNCE TIME: ≤3 ms
*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
Infrared Reflow Soldering in accordance with IEC61760-1
Packaging
In reels of 7,000 pieces for KMR 2
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.
Specification
FUNCTION: momentary action
CONTACT ARRANGEMENT: 1 make contact = SPST, N.O.
TERMINALS: Gullwing type for SMT
Mechanical
Total height
21,9 mm LFS Lead free compatible, silver plated
LFG Lead free compatible, gold plated
Actuation Force
11.2 N (120 grams)
22 N (200 grams)
33 N (300 grams)
44 N (400 grams)
K M R N G
2 3 1
Contact Material
1Silver
2Silver long life
3Gold Grounding option
GGround pin
NG No Ground pin
Low Current capability
Void Under standard specification
ULC Low current
Part Number Description
For any part number different from those listed above, please consult your local representative.
KMR211 LFS 1.2 (120) ±0.30 200 000 0.20 mm ±0.1
KMR213 LFG 1.2 (120) ± 0.30 200 000 0.20 mm ± 0.1
KMR221 LFS 2.0 (200) ± 0.50 200 000 0.25 mm ± 0.1
KMR223G LFG 2.0 (200) ±0.50 200 000 0.25 mm ± 0.1
KMR231 LFS 3.0 (300) ± 0.75 150 000 0.25 mm ± 0.1
KMR233G LFG 3.0 (300) ± 0.75 150 000 0.25 mm ± 0.1
KMR231 ULC LFS 3.0 (300) ± 0.75 150 000 0.25 mm ± 0.1
KMR232 LFS 3.0 (300) ± 0.75 300 000 0.25 mm ± 0.1
KMR232 ULC LFS 3.0 (300) ± 0.75 300 000 0.25 mm ± 0.1
KMR241 LFS 4.0 (400) ±1.00 100 000 0.30 mm ± 0.1
KMR243G LFG 4.0 (400) ± 1.00 100 000 0.30 mm ± 0.1
KMR241 ULC LFS 4.0 (400) ± 1.00 100 000 0.30 mm ± 0.1
KMR242 LFS 4.0 (400) ± 1.00 200 000 0.30 mm ± 0.1
KMR242 ULC LFS 4.0 (400) ± 1.00 200 000 0.30 mm ± 0.1
Type G and NG
(except gold
version G only)
See desciption
below
Operating
force
N (grs)
Operating
life
(cycles)
Travel (mm)
TACTILE FEELING: for KMR 2 series: ≥30% (1.2N at 20%)
U L C L F S
www.ck-components.com
B–10
Dimensions shown in: mm (inch)
Specifications and dimensions subject to change
Tactile Switches
B
B
B
AA
ø
+0,25
0
+0,3
-0,1
ø
GROUND TERMINAL
60 max
4 ± 0,1 1,5 ± 0,1
2 ± 0,05
4,95 ± 0,1
1,5
3,03 ± 0,1
1,75
5,5 ± 0,05
12
2,13 ± 0,1
0,292 ± 0,02
SECTION A-A
DE-REELING DIRECTION
OUT OF THE TAPE
70 max
KMR 2 Series
Microminiature Tact Switch for SMT
B
B
2,11
1,61
2,2
0,6 0,6
4,2
4,6
2,45
0,55
0,6
2,6
5
1,7
3,2
1
2,8 ± 0,2
1,4 ± 0,15
1,9 ± 0,2
3
42
1
5
KMR 2 Series - 1.9 mm height
DIRECTION OF FEED
TAPE & REEL
PCB layout shown with ground pin option
www.ck-components.com
B–11
Dimensions shown in: mm (inch)
Specifications and dimensions subject to change
Tactile Switches
B
Features/Benefits
•Long Life version
•4 actuation forces
•Optional ground pin
•Ultra low current capabilities
•Excellent tactile feel
KMR 4 Series
Microminiature SMT Top Actuated
Typical Applications
•Automotive
•Cellular phones
•Industrial electronics
•Medical equipment
Electrical Silver Gold
MAXIMUM POWER: 1 VA 0.2 VA
MAXIMUM VOLTAGE: 32 VDC 32 VDC
MINIMUM VOLTAGE: 20 mVDC 20 mVDC
MAXIMUM CURRENT: 50 mA 10 mA
MINIMUM CURRENT: 1 mA* 1 mA*
DIELECTRIC STRENGTH: ≥250 Vrms
CONTACT RESISTANCE: ≤100 mΩ
INSULATION RESISTANCE: ≥1GΩ
BOUNCE TIME: ≤3 ms
*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
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.
Specification
FUNCTION: momentary action
CONTACT ARRANGEMENT: 1 make contact = SPST, N.O.
TERMINALS: Gullwing type for SMT
Mechanical
Total height
42,5 mm LFS Lead free compatible, silver plated
LFG Lead free compatible, gold plated
Actuation Force
22 N (200 grams)
33 N (300 grams)
44 N (400 grams)
K M R N G
431
Contact Material
1Silver
2Silver long life
3Gold Grounding option
GGround pin
NG No Ground pin
Low Current capability
Void Under standard specification
ULC Low current
Part Number Description
For any part number different from those listed above, please consult your local representative.
KMR421 LFS 2.0 (200) ± 0.50 200 000 0.25 mm ± 0.1
KMR431 LFS 3.0 (300) ± 0.75 150 000 0.30 mm ± 0.1
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
KMR442 ULC LFS 4.0 (400) ±1.00 200 000 0.35 mm ±0.1
Type G and NG
(except gold
version G only)
See desciption
below
Operating
force
N (grs)
Operating
life
(cycles)
Travel (mm)
TACTILE FEELING: for KMR 4 series: ≥25%
U L C L F S
www.ck-components.com
B–12
Dimensions shown in: mm (inch)
Specifications and dimensions subject to change
Tactile Switches
B
B
B
2,5 ± 0,2
1,4 ± 0,15
1,61
2,2
0,6 0,6
2,8 ± 0,2
4,2
4,6
2,11
3,2
1,7
0,55
2,45
0,6
2,6
1
5
5
1
2
4
3
B
B
AA
+0,3
-0,1
ø
GROUND TERMINAL
2,75 ± 0,1
0,292 ± 0,02
3,03 ± 0,1
1,75
5,5 ± 0,05
12
4 ± 0,1 2 ± 0,051,5 ± 0,1
60 max
4,95 ± 0,1
SECTION A-A
DE-REELING DIRECTION
OUT OF THE TAPE
60 max
KMR 4 Series
Microminiature Tact Switch for SMT
TAPE & REEL
KMR 4 Series - 2.5 mm height PCB layout shown with ground pin option
