KSR Series
Subminiature Tact Switch for SMT
Features/Benefits
• 4 actuation forces
• G terminations
• N.O. and N.C.
• Detect type available
• Rubber actuator
• RoHS compliant and compatible
Typical Applications
• Automotive
• Medical equipment
• Industrial electronics
• Smart meters
B
Electrical
FUNCTION: momentary action
CONTACT ARRANGEMENT:
Normally Open (standard versions)
Normally Closed (NC versions)
TERMINALS: Gullwing type for SMT
MAXIMUM POWER:
MAXIMUM VOLTAGE:
MINIMUM VOLTAGE:
MAXIMUM CURRENT DC:
MINIMUM CURRENT DC:
Mechanical
CONTACT RESISTANCE: ≤ 100 mΩ
INSULATION RESISTANCE: (100 V): 1G Ω (between terminals)
BOUNCE TIME: 1 ms max.
Type
KSR211G LFS / KSR213G LFG
KSR221G LFS / KSR223G LFG
KSR231G LFS /KSR233G LFG
KSR251G LFS / KSR253G LFG
KSR221G NC LFS
KSR223G NC LFG
Operating force
Newtons (grams)
Operating life Travel
(operations)
(mm)
1,5 < 1,85 (185) < 2,2
1,9 < 2,25 (225) < 2,6
2,25 < 3,00 (300)< 3,75
3,4 < 4,50 (450) < 5,6
1,5 < 2,25 (225) < 3
1,5 < 2 (200) < 2,5
100,000
100,000
100,000
100,000
30,000
30,000
0,25 ± 0,15
0,3 ± 0,15
0,35 ± 0,15
0,5 ± 0,15
0,3 ± 0,15
0,3 ± 0,15
Environmental
Silver
Gold
1 VA
0.2 VA
32 VDC 32 VDC
20 mV
20 mV
50 mA
10 mA
1 mA
1 mA
Silver
Gold
OPERATING TEMPERATURE: -40˚C to 85˚C
STORAGE TEMPERATURE: -55˚C to 85˚C
-40˚C to 125˚C
-55˚C to 125˚C
Process
SOLDERING: Lead free reflow soldering process in accordance
with IEC 61760-1.
Overload: 20 Newtons
Detect switch versions are available. Please see Detect chapter
KSR2D/M series.
NOTE: Specifications listed above are for switches with standard options.
For information on specific and custom switches, consult Customer Service Center.
Packaging
Switches are delivered on continuous tape, in reels of 2,500 pieces.
How To Order
Our easy build-a-switch concept allows you to mix and match options to create the switch you need. To order, select
desired option from each category and place it in the appropriate box.
However, please note that all the combinations of these options are not feasible.
For any part number different from those listed above, please consult your local representative.
K
S
R
2
G
Actuator
2 Soft actuator
Operating Force
1 1.8 N (180 grams)
2 2.0 N (200 grams)
3 3.0 N (300 grams)
5 4.5 N (450 grams)
Contact Material
1 Silver
3 Gold
LFS RoHS compliant and compatible. Silver plated.
LFG RoHS compliant and compatible. Gold plated.
Switch Function
(NONE) Normally open
NC Normally closed*
Termination
G Gull wing
*Available on KSR22xG only.
Dimensions are shown: mm
Specifications and dimensions subject to change
23 Jun 21
B–66
www.ckswitches.com
Tactile Switches
Specification
KSR Series
Subminiature Tact Switch for SMT
KSR
1,75
2,5
ø 1,9
B
7,3
6
1
3,8
Tactile Switches
1,4
Recommended PCB layout
6
8
TAPE & REEL
2,8
8
6,25
2
4
ø1,5
A
5,5
2
7,65
12
1,75
0,25
2,1
ø1,5
A
4
DIRECTION OF FEED
Dimensions are shown: mm
Specifications and dimensions subject to change
23 Jun 21
B–67
www.ckswitches.com
KSR Long Life-200,000 cycles-Gold and Silver Series
Subminiature Tact Switch for SMT
Tactile Switches
B
Features/Benefits
• 4 actuation forces
• G terminations
• N.O.
• Detect type available
• Rubber actuator
• IP50 sealed
• RoHS compliant and compatible
Typical Applications
• Automotive
• Medical equipment
• Industrial electronics
Specification
Electrical
FUNCTION: momentary action
CONTACT ARRANGEMENT: Normally Open
TERMINALS: Gullwing type for SMT
MAXIMUM POWER:
1 VA
0.2 VA
MAXIMUM VOLTAGE: 32 V dc 32 V dc
MINIMUM VOLTAGE: 20 m Vdc
20 m Vdc
MAXIMUM CURRENT DC: 50 mA
10 mA
MINIMUM CURRENT DC:
1 mA
1 mA
Mechanical
Operating force(Fa) Operating life
Type
Newtons (grams) (operations)
Silver versions
KSR212G LFS 1,5 < 1,85 (185) < 2,2
200,000
KSR222G LFS 1,9 < 2,25 (225) < 2,6
KSR232G LFS 2,25 < 3,00 (300)< 3,75
KSR252G LFS 3,4 < 4,50 (450) < 5,6
Gold versions
KSR214G LFS 1,5 < 1,85 (185) < 2,2
KSR224G LFS 1,9 < 2,25 (225) < 2,6
KSR234G LFS 2,25 < 3,00 (300)< 3,75
KSR254G LFS 3,4 < 4,50 (450) < 5,6
Travel
(mm)
200,000
200,000
200,000
0,25 ± 0,15
0,3 ± 0,15
0,35 ± 0,15
0,5 ± 0,15
200,000
200,000
200,000
200,000
0,25 ± 0,15
0,3 ± 0,15
0,35 ± 0,15
0,5 ± 0,15
Silver
Gold
CONTACT RESISTANCE: ≤ 100 m Ω
INSULATION RESISTANCE (100 V): 1 G Ω (between terminals)
BOUNCE TIME: 1 ms max
Environmental
Silver
Gold
OPERATING TEMPERATURE: -40˚C to 85˚C
STORAGE TEMPERATURE: -55˚C to 85˚C
-40˚C to 125˚C
-55˚C to 125˚C
Process
SOLDERING: Compatible with lead free reflow soldering process.
NOTE: Specifications listed above are for switches with standard options.
For information on specific and custom switches, consult Customer Service Center.
OVERLOAD: 20 Newtons
Packaging
Switches are delivered on continuous tape, in reels of 2,500 pieces.
How To Order
Our easy build-a-switch concept allows you to mix and match options to create the switch you need. To order, select
desired option from each category and place it in the appropriate box.
However, please note that all the combinations of these options are not feasible.
For any part number different from those listed above, please consult your local representative.
K
S
R
2
G
Actuator
2 Soft actuator
LFS RoHS compliant and compatible. Silver plated.
LFG RoHS compliant and compatible. Gold plated.
Operating Force
1 1.8 N (180 grams)
2 2.0 N (200 grams)
3 3.0 N (300 grams)
5 4.5 N (450 grams)
Contact Material
2 Silver
4 Gold
Termination
G Gull wing
Dimensions are shown: mm
Specifications and dimensions subject to change
B–68
www.ckswitches.com
KSR Long Life-200,000 cycles-Gold and Silver Series
Subminiature Tact Switch for SMT
KSR
1,75
2,5
ø 1,9
B
7,3
6
1
3,8
Tactile Switches
TERMINATION
1,4
Recommended PCB layout
6
8
TAPE & REEL
2,8
8
6,25
2
4
ø1,5
A
5,5
2
7,65
12
1,75
0,25
2,1
ø1,5
A
4
DIRECTION OF FEED
Dimensions are shown: mm
Specifications and dimensions subject to change
B–69
www.ckswitches.com
