KS
Single Pole Key Switches
Features/Benefits
•
Positive tactile feel
•
Variety of cap colors
•
SPST and SPDT configurations
•
RoHS compliant
Typical Applications
•
Telecommunications
•
Industrial
•
Instrumentation
Specifications
CONTACT RATING: Q contact material: 25mA @
50V AC .or DC max.
ELECTRICAL LIFE: 100,000 actuations.
CONTACT RESISTANCE: Below 100 mΩ initial @
2-4 V DC, 100 mA
INSULATION RESISTANCE: 10
9
Ω min.
DIELECTRIC STRENGTH: 1,000 Vrms min. @ sea level.
OPERATING TEMPERATURE: -30˚C to 65˚C.
SOLDERABILITY: Per MIL-STD-202F method 208D, or
EIA RS-186E method 9 (1 hour steam aging).
Note:
Specifications and materials listed above are for switches with standard options.
For information on specific and custom switches, consult Customer Service Center.
Materials
CASE: Glass filled nylon (UL 94V-0).
ACTUATOR: ABS, matte finish, black standard.
MOVABLE CONTACT: Q contact material: Stainless steel, silver plat-
ed.
STATIONARY CONTACTS AND TERMINALS: Q contact material:
copper alloy, silver plated.
TERMINAL SEAL: Epoxy
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.
K
S
C
D
Key Switches
Series
KS11
KS12
SPST Off-Mom.
SPDT On-Mom.
Cap
R2
Round depression
Cap
2
1
3
9
Color
Black
White
Red
Gray
Terminations
C
PC Thru-hole
Contact Material
Q
Silver
B
Gold
Seal
D
No epoxy
E
Epoxy
Dimensions are shown: mm
Specifications and dimensions subject to change
D–22
www.ckswitches.com
KS
Single Pole Key Switches
SERIES
KS11 / KS12
.485 SQ.
[12,32]
.406 SQ.
[10,31]
.090
[2,29]
.298
[7,57]
.059
[1,5]
.152
[3,86]
.203
ø .039 [5,16]
[0,99]
.097
[2,46]
.094
[2,39]
.094
[2,39]
ø .064
[1,63]
.016 TYP
[0,41]
.028 TRAVEL
[0,71]
.039 TYP
[0,99]
.103
[2,62] .097
[2,46]
.097
[2,46]
FINGER
RECESS
SWITCH FUNCTION
POS. 1
NO.
POLES
MODEL
NO.
POS. 2
CONNECTED TERMINALS
POS. 1
POS. 2
SCHEMATIC
3
KS11
SP
KS12
OFF
MOM.
OPEN
1–3
1
SPST
ON
MOM.
1–4
1–3
SPDT
NC 4
1 (COMM)
3 NO
CAP
R2
CAP WITH ROUND DEPRESSION
.485 SQ.
[12,32]
.406 SQ.
[10,31]
.090
[2,29]
.298
[7,57]
.059
[1,5]
.152
[3,86]
OPTION
CODE
CAP COLOR
BLACK
WHITE
RED
GRAY
2
1
3
9
FINGER
RECESS
.028 TRAVEL
[0,71]
D
Key Switches
Dimensions are shown: mm
Specifications and dimensions subject to change
D–23
www.ckswitches.com
KS
Single Pole Key Switches
TERMINATION
C
PC THRU-HOLE
PC MOUNTING
.094
[2,39]
.097
.103 [2,46]
[2,62]
.097
[2,46]
.203
[5,16]
.094
[2,39]
.097
.103 [2,46]
[2,62]
.097
[2,46]
.203
[5,16]
.094
[2,39]
.048 TYP
[1,22]
MULTIPLE SWITCH SPACING
.090
[2,29]
.298
[7,57]
.059
[1,5]
.152
[3,86]
.500
(12,70)
.094
[2,39]
.097
[2,46]
.028 TRAVEL
[0,71]
.048 TYP .097
[1,22] [2,46]
.500
(12,70)
KS11
KS12
CONTACT MATERIAL
OPTION
CODE
CONTACT
MATERIAL
SILVER
2
GOLD
1
TERMINAL
PLATING
SILVER
2
GOLD
1
POWER
LOW LEVEL/DRY CIRCUIT
RATINGS
25 mA MAX. @ 50 V AC OR DC MAX.
0.4 VA MAX. @ 20 V AC OR DC MAX.
Q
B
1) MOVABLE CONTACT: Stainless steel, with gold plate over nickel plate.
STATIONARY CONTACTS & ALL TERMINALS: Copper alloy, with gold plate over
nickel plate.
2) MOVABLE CONTACT: Stainless steel, silver plated.
STATIONARY CONTACTS & ALL TERMINALS: Copper alloy, silver plated.
NOTE:
Any models supplied with Q or B contact material are RoHS compliant.
SEAL
D
Key Switches
D
NO EPOXY SEAL
E
EPOXY SEAL
EPOXY
Dimensions are shown: mm
Specifications and dimensions subject to change
D–24
www.ckswitches.com
