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: Inch (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
B
PCB layout shown with ground pin option
3,2 1,7 5
1,4 ± 0,15
B Tactile Switches
B
2,5 ± 0,2
0,55
3
1
0,6
5
SECTION A-A
4,6 4,2
2,45
2,8 ± 0,2
0,6
1,61
0,6
2,11
2,2
TAPE & REEL
DE-REELING DIRECTION OUT OF THE TAPE
60 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
1
4
2
2,6
A
A
60 max 0,292 ± 0,02 GROUND TERMINAL 3,03 ± 0,1 B
Dimensions are shown: Inch (mm) Specifications and dimensions subject to change
B–12
www.ck-components.com
4,95 ± 0,1
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