KMR421NGLFS C&K Components, KMR421NGLFS Datasheet
KMR421NGLFS
Manufacturer Part Number
KMR421NGLFS
Description
Switch Tact SMT-J 4.2x2.8x2.5mm 2N Vertical - reel *Y78B42120FP
Manufacturer
C&K Components
Datasheet
1.KMR421NGLFS.pdf
(2 pages)
Specifications of KMR421NGLFS
Lead_time
56
Pack_quantity
6000
Specification
FUNCTION: momentary action
CONTACT ARRANGEMENT: 1 make contact = SPST, N.O.
TERMINALS: Gullwing type for SMT
Mechanical
TACTILE FEELING: for KMR 4 series: ≥ 25%
Part Number Description
For any part number different from those listed above, please consult your local representative.
KMR421 LFS
KMR431 LFS
KMR431 ULC LFS 3.0 (300) ± 0.75
KMR432 LFS
KMR432 ULC LFS 3.0 (300) ± 0.75
KMR441 LFS
KMR441 ULC LFS 4.0 (400) ± 1.00
KMR442 LFS
KMR442 ULC LFS 4.0 (400) ± 1.00
Type G and NG
version G only)
See desciption
(except gold
below
Total height
4
K
2,5 mm
M
Actuation Force
2
3
4
2 N (200 grams)
3 N (300 grams)
4 N (400 grams)
R
2.0 (200) ± 0.50
3.0 (300) ± 0.75
3.0 (300) ± 0.75
4.0 (400) ± 1.00
4.0 (400) ± 1.00
Contact Material
1
2
3
Operating
Silver
Silver long life
Gold
N (grs)
force
4
Features/Benefits
•
•
•
•
•
3
Long Life version
4 actuation forces
Optional ground pin
Ultra low current capabilities
Excellent tactile feel
Operating
200 000
150 000
150 000
300 000
300 000
100 000
100 000
200 000
200 000
(cycles)
life
1
Grounding option
G
NG
Ground pin
0.30 mm ± 0.1
0.35 mm ± 0.1
0.25 mm ± 0.1
0.30 mm ± 0.1
0.30 mm ± 0.1
0.30 mm ± 0.1
0.35 mm ± 0.1
0.35 mm ± 0.1
0.35 mm ± 0.1
No Ground pin
Travel (mm)
N
G
U
B–11
Microminiature SMT Top Actuated
Electrical
MAXIMUM POWER:
MAXIMUM VOLTAGE:
MINIMUM VOLTAGE:
MAXIMUM CURRENT:
MINIMUM CURRENT:
DIELECTRIC STRENGTH:
CONTACT RESISTANCE:
INSULATION RESISTANCE:
BOUNCE TIME:
*For ULC version minimum current is 1µA at 1.8 VDC
Environmental
OPERATING TEMPERATURE:
STORAGE TEMPERATURE:
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.
L
C
Low Current capability
Void
ULC
Under standard specification
Low current
L
F
Typical Applications
•
•
•
•
S
Automotive
Cellular phones
Industrial electronics
Medical equipment
LFS
LFG
Lead free compatible, silver plated
Lead free compatible, gold plated
-40˚C to 85˚C
-55˚C to 85˚C
Specifications and dimensions subject to change
Silver
≥ 250 Vrms
≤ 100 mΩ
20 mVDC
32 VDC
≥ 1GΩ
≤ 3 ms
50 mA
1 mA*
Silver
1 VA
KMR 4 Series
www.ck-components.com
Dimensions shown in: mm (inch)
-40˚C to 125˚C
-55˚C to 125˚C
Gold
20 mVDC
32 VDC
10 mA
0.2 VA
Gold
1 mA*
B
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