KMT2 Series
Nano-Miniature SMT Top Actuated
Features
•
Smallest footprint
•
High number of cycles within the
smallest packaging
•
Smallest thickness with integrated
actuator
Typical Applications
•
Mobile Phones
•
Hearing Aids
•
MP3 accessories
•
Bluetooth Headset
•
Ground pin option
•
Halogen free
Tactile Switches
Specification
FUNCTION: momentary action
CONTACT ARRANGEMENT: 1 make contact = SPST, N.O.
TERMINALS: Gullwing type for SMT
Environmental
Silver
OPERATING TEMPERATURE:
STORAGE TEMPERATURE:
-40˚C to 85˚C
-55˚C (10 days)
+85˚C (4 days)
Mechanical
Operating force
Type G and NG Newtons (grams)
KMT 211 HF LFS 1.0 (100) ± 0.25
KMT 221 HF LFS 1.6 (160) ± 0.40
Operating
Life
150,000
150,000
Tactile
Feeling
≥ 10%
≥ 30%
Travel mm
0.15 ± 0.1
0.15 ± 0.1
Process
SOLDERING: This component is suited to the following methods:
– Lead free reflow soldering process in accordance with IEC
61760-1.
Electrical
MAXIMUM POWER:
MAXIMUM VOLTAGE:
MINIMUM VOLTAGE:
MAXIMUM CURRENT DC:
MINIMUM CURRENT DC:
DIELECTRIC STRENGTH:
CONTACT RESISTANCE:
INSULATION RESISTANCE:
BOUNCE TIME:
Silver
0.5 VA
32 VDC
20 mV
50 mA
1 mA
≥ 250 Vrms (1mn)
≤ 150 mΩ
≥ 50 MΩ
≤ 6 ms
Packaging
In reels of 4,000 pieces.
Dimensions of reels according to EIA 481B
External diameter 180 mm
NOTE:
Specifications listed above are for switches with standard options.
For information on specific and custom switches, consult Customer Service Center.
Part Number Description
For any part number different from those listed above, please consult your local representative.
K
M
T
2
HF
L
F
Total Height
2
0.65 mm
Actuation Force
1
1.0 N (100 grams)
2
1.6 N (160 grams)
Contact
Material
1
Silver
3
Gold - please
contact Customer Service
Grounding
Option
G
Ground Pin
NG
No Ground Pin
Type
HF
Halogen Free
LFS
RoHS, silver plated
LFG
RoHS, gold plated - please contact Customer Service
Dimensions are shown: mm
Specifications and dimensions subject to change
B–7
www.ckswitches.com
KMT2 Series
Nano-Miniature SMT Top Actuated
KMT Series – No Ground Pin
RECOMMENDED LAYOUT
ELECTRICAL DIAGRAM
1,4
2,4
3,4 ± 0,2
0,46
0,65 ± 0,1
B
Tactile Switches
0,06
ø1,2
2,3
3,6
3
KMT Series – With Ground Pin
ELECTRICAL DIAGRAM
RECOMMENDED LAYOUT
1,4
2,4
2,6
(0,05)
3,4 ±0,2
0,46
0,65 ± 0,1
ø1,2
2,3
3,6
0,2
0,06
3
0,4
2,6
0,4
0,02 ±0,05
(0,05)
TAPE & REEL
0,25 ±0,05
0,95 ±0,1
DE-REELING DIRECTION
OUT OF THE TAPE
SECTION A-A
Draft 5˚ max
2±0,05
4±0,05
B
+0,1
ø1,5 0
1,3 ±0,1
ø1±0,1
+0,3
12 -0,1
5,5 ±0,05
1,75 ±0,1
0,6
1,2
2,6
4±0,1
1,2
2,6
3,6 ±0,1
A
A
Draft 5˚ max
B
1,7 ±0,1
2,8 ±0,1
Dimensions are shown: mm
Specifications and dimensions subject to change
4±0,1
R0,5
B–8
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