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