K12 Series
High Performance Key Switches
Features/Benefits
• Excellent tactile feel
• Wide choice of LED colors,
travel and actuator forces
•
•
•
•
•
High reliability / long life
Sealed version available
Designed for low-level switching
Typical Applications
• Automotive
• Off-road transportation
• Industrial electronics
• Computers & network equipment
• Joysticks
Double stroke version available
Detector version available
Construction
Electrical
FUNCTION: momentary
DISTANCE BETWEEN BUTTON CENTERS:
min. 11 (0.433) K12C = 13 (0.512)
TERMINALS: PC pins, tinned
MOUNTING: Locating pins; K12G and K12P additionally
with snap-in housing
SWITCHING POWER MIN./MAX.: 0.02mW/3 W
SWITCHING VOLTAGE MIN./MAX.: 2 V DC / 30 V DC
SWITCHING CURRENT MIN./MAX.: 10 mA /100 mA
DIELECTRIC STRENGTH (50 Hz, 1 min): ≥ 500 V
OPERATING LIFE
For all K12 versions up to 6N with max. switching power: ≥ 106
operations
For all K12/K12C versions from 7N to 20N with max. switching power:
please consult factory
For K12G & K12GO with max. switching power: ≥ 5 x 104 operations
CONTACT RESISTANCE: Initial ≤ 50 mΩ
INSULATION RESISTANCE: ≥ 1010 Ω
BOUNCE TIME: ≤ 1 ms; Operating speed 100 mm/s (3.94/s)
Mechanical
TOTAL TRAVEL: 1 mm, 1,5 mm, 2 mm
SWITCHING TRAVEL: 0,6 mm*
OPERATING FORCE: 1.5 N OD without snap-point as detector
switch, 2.5 N, 3.5 N, 5 N, 3.5/7 N, 6/12 N. Additional
operating force 7N, 9N and 20N, available on request.
PROTECTION CLASS: K12C IP 67 (dust tight, protected against
the effects of immersion in water; other versions IP 40)
* Additional switching travel (with pre-travel) available by request.
Packaging
Bulk in boxes of 250 pieces (version C or GO) or
300 pieces (version A, AL, P or PL)
Environmental
OPERATING TEMPERATURE: -40˚C to 85˚C
STORAGE TEMPERATURE: -40˚C to 95˚C
Process
SOLDERABILITY: Wave soldering, compatible with lead free soldering
profile; Hand soldering, 350˚C
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.
Note: Some of the configurations may not be available or could require some development.
Series
K12A
K12AL
K12P
K12PL
K12C
K12GO
1
2
No snap-in pegs
No snap-in pegs with central LED
With snap-in pegs
With central LED
Sealed contact with rubber cap (IP 67)
Two-step switch
Cap Color
NONE version with LED, version C
BK Black cap – No LED
YE Yellow cap - No LED
RD Red cap – No LED
GY Gray cap – No LED
Standard LED Code
NONE No LED
LV306 Green
LV327 Yellow
LV315 Orange
LV352 Red
LV302 White
LED Color
NONE No LED
GN Green
YE Yellow
OG Orange
RD Red
WH White
Travel*
1
1 mm (0.039)
1.5 1.5 mm (0.059)
2
2 mm (0.079)
* K12C –
1mm MAX
K12 with LED – 1.5 mm MAX
** K12G & K12GO version only
*** Additional operating force: 7N, 9N available on request
Operating Force***
1.5N OD 1.5 N without
snap-point
2.5N
2.5 N
3.5N
3.5 N
5N
5N
3.5/7N 3.5/7 N**
6/12N 6/12 N**
Contact
Arrangement
NONE SPST NO (STD)
1R SPST NC
(Special request)
Dimensions are shown: mm
Specifications and dimensions subject to change
14 Jan 22
D–7
www.ckswitches.com
Key Switches
K
D
K12 Series
High Performance Key Switches
SERIES
K12A
without snap in
total travel 1 or 1.5mm
PCB LAYOUT, MOUNTING SIDE
2,5
[.098]
2,5
0,2
2,6
[.007]
[.1141]
11
2.9
.4334]
[.354]
9
ø1
[.0394]
[.098]
7,5
[.295]
[.103]
12
ø 9,8
7
[.4
[.386]
2]
10,9
K1
2
[.429]
K12AL
[.217]
5,5
ø3
[.118]
11
D
[.433]
PCB LAYOUT, MOUNTING SIDE
2x 1,1+0,05
0
ELECTRICAL GRAPH
2,5
2,5
A
0,2
3,6
2
2,5
1,5
PCB
[.0591]
Key Switches
2,6
C
1
2
4x 0,9± 0,05
1
A
7,5
ø 4,6
C
A
[.181]
ø 5,6
[.22]
1,1+0,05
2x
2x
center hole
2x
LED
2x
2x
switch
Without
with LED
0,9 ±0,05
A
Hole
ø
Description
ø0,5 (.020)
Sn
0,7x0,2 (.028x.081)
Sn
Terminal Section
Surface
1
2
C
Dimensions are shown: mm
Specifications and dimensions subject to change
14 Jan 22
D–8
www.ckswitches.com
K12 Series
High Performance Key Switches
SERIES
with snap in
2,9
(.1141)
9,6
(.378)
3,75
(.148)
12,5
(.492)
2,5
(.098)
1,2
(.047)
3,5
(.138)
ø1,0
(.0394)
1,5
(.059)
11,0
(.433)
1,5
(.059)
7,5
(.295)
2,6
(.103)
2,5
(.098)
PCB LAYOUT, MOUNTING SIDE
9,0
(.354)
total travel 1, 1,5 or 2
(.0394, .0591 or .0787)
0,2
(.007)
K12P
center of actuation area (notice LED)
9,8
(.386)
1
(.4 2,0
72
)
10,9 SQ.
(.429)
Hole
Ø
Without LED
1,7 (.069)
2x
1,6 (.062)
1x
Description
Terminal Section
Surface
snap-in
coding hole
(L,M,N)
1,1 (.043)
2x
center hole
0,9 (.035)
2x
switch
0.7 x 0.2 (.028 x .081)
Sn
Sn
K12
K12PL
total travel 1 or 1,5
(.0394 or .0591)
PCB LAYOUT, MOUNTING SIDE
2x
11,0
(.433)
A
2,5
0,2
2,5
A
ø4,6
(.181)
ELECTRICAL GRAPH
2
2,6
5,6
(.22)
D
2x 1,7+0,1
0
2,5
3,6
PCB
C
1
2,5
1
1,6+0,1
0
2
C
A
9,6
A
Hole
1
C
Ø
Without LED
1,7 (.069)
2x
1,6 (.062)
1x
2
1,1 (.043)
2x
0,9 (.035)
2x
2x
Description
Terminal Section
Surface
snap-in
coding hole
(L,M,N)
center hole
LED
m0.5 (.020)
switch
0.7 x 0.2 (.028 x .081)
Sn
Sn
Dimensions are shown: mm
Specifications and dimensions subject to change
14 Jan 22
D–9
www.ckswitches.com
Key Switches
1,5
(.0591)
4x 0,9 0,05
pin ø 1.1 (.0433)
for coding of LED color
1,1+0,05
0
7,5
3,75
5,5
(.217)
ø3,0
(.118)
K12 Series
High Performance Key Switches
SERIES
K12C SEALED CONTACT WITH RUBBER CAP (IP 67)
total travel 1,0
(.0394)
PCB LAYOUT, MOUNTING SIDE
2,9
(.114)
ø12,8
(.504)
2,5
(.098)
2,5
(.098)
5,0
(.197)
2,3
(.090)
0,2
(.0078)
2,9
(.114)
1,2
(.047)
1,8
(.0709)
5,5
(.217)
12,0
(.472)
7,5
(.295)
12,0
(.472)
2
K1
10,9
(.429)
actuation area
10,9
(.429)
Hole
SCHEMATIC
A
Ø
Without LED
Description
1,1 (.043)
2x
center hole
0,9 (.035)
2x
switch
Terminal Section
Surface
0.7 x 0.2(.0275 x .0787)
Sn
Key Switches
D
R
Dimensions are shown: mm
Specifications and dimensions subject to change
14 Jan 22
D–10
www.ckswitches.com
K12 Series
High Performance Key Switches
SERIES
K12GO
PCB LAYOUT, MOUNTING SIDE
(0.0591)
5 (0.197)
(0.
3,75
1/2
(0.148)
7,5 (0.295)
11 (0.433)
(0.354)
9
2,9
3,5 (0.138)
12
1/1
2/1
(0.114)
1,5 (0.059)
2/2
2,6 (0.103)
0,2 (0.0078)
total travel 1,5mm
9,6 (0.278)
47
2)
ø 9,8 (0.386)
(0.244)
SQ. 10,9 (0.428)
K12
2/2
1/1
1/2
D
2/1
1/1
1/2
2/1
2/2
Hole
Ø
Without LED
Description
1,7
2x
snap-in
(.069)
1,6
1x
code
(.062)
0,9
LED
(.035)
2x
switch 2
2x
switch 1
Terminal Section
m0.5 (.020)
0.7 x 0.3 (.028 x .012)
0.7 x 0.2 (.028 x .081)
Surface
Sn
Sn
Sn
Dimensions are shown: mm
Specifications and dimensions subject to change
14 Jan 22
D–11
www.ckswitches.com
Key Switches
SCHEMATIC K12G
K12 Series
High Performance Key Switches
CAP COLOR
OPTION
CODE
COLOR
NONE
BK
YE
RD
GY
Version with LED
Black - no LED
Yellow - no LED
Red - no LED
Gray - no LED
LED COLOR
OPTION
CODE
STANDARD
LED CODE
COLOR
NONE
Models without LED
GN Green
YE Yellow
OG Orange
RD Red
WH White
COLOR
NONE
Models without LED
LV306 Green
LV327 Yellow
LV315 Orange
LV352 Red
LV302 White
TRAVEL
1 1 mm
1.5 1.5 mm
2 2 mm
OPERATING FORCE
D
Key Switches
OPTION
CODE OPERATING FORCE
1.5N OD
1.5 N,150g without snap-point
2.5N
2.5 N, 250g
3.5N
5N
3.5/7N
3.5/7 N, 350/700g
6/12N
6/12 N, 600-1200g
3.5 N, 350g
5 N, 500g
CONTACT ARRANGEMENT OPTION
1R SPST NC (SPECIAL REQUEST FOR NORMALLY CLOSED OPTION)
Dimensions are shown: mm
Specifications and dimensions subject to change
14 Jan 22
D–12
www.ckswitches.com
