KS
Single Pole Key Switches
Features/Benefits
• Positive tactile feel
• Variety of cap colors
• SPST and SPDT configurations
• RoHS compliant
Specifications
Typical Applications
• Telecommunications
• Industrial
• Instrumentation
Materials
CASE: Glass filled nylon (UL 94V-0).
CONTACT RATING: Q contact material: 25mA @
50V AC .or DC max.
ACTUATOR: ABS, matte finish, black standard.
ELECTRICAL LIFE: 100,000 actuations.
MOVABLE CONTACT: Q contact material: Stainless steel, silver platCONTACT RESISTANCE: Below 100 mΩ initial @
ed.
2-4 V DC, 100 mA
STATIONARY CONTACTS
AND TERMINALS: Q contact material:
9
INSULATION RESISTANCE: 10 Ω min.
copper alloy, silver plated.
DIELECTRIC STRENGTH: 1,000 Vrms min. @ sea level.
OPERATING TEMPERATURE: -30˚C to 65˚C.
TERMINAL SEAL: Epoxy
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.
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
Key Switches
D
Series
KS11
KS12
S
C
SPST Off-Mom.
SPDT On-Mom.
Cap
R2 Round depression
Cap Color
2
Black
1 White
3 Red
9 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]
.152
[3,86]
.298
[7,57]
.059
[1,5]
.203
ø .039 [5,16]
[0,99]
.097
[2,46]
.094
[2,39]
.103
[2,62] .097
[2,46]
ø .064
[1,63]
.016 TYP
[0,41]
FINGER
RECESS
.028 TRAVEL
[0,71]
.097
[2,46]
.039 TYP
[0,99]
SWITCH FUNCTION
CONNECTED TERMINALS
POS. 2
POS. 1
NO.
POLES
.094
[2,39]
POS. 1
POS. 2
MODEL
NO.
SCHEMATIC
KS11
OFF
MOM.
OPEN
1–3
KS12
ON
MOM.
1–4
1–3
1
3
SPST
SP
1 (COMM)
SPDT
NC 4
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
FINGER
RECESS
D
Key Switches
CAP COLOR
2
BLACK
1
WHITE
3 RED
9
GRAY
.028 TRAVEL
[0,71]
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
.090
[2,29]
.298
[7,57]
.059
[1,5]
PC MOUNTING
.097
.103 [2,46]
[2,62]
.097
[2,46]
.203
[5,16]
.094
[2,39]
.097
[2,46]
.203
[5,16]
.094
[2,39]
.152
[3,86]
MULTIPLE SWITCH SPACING
.097
.103 [2,46]
[2,62]
.094
[2,39]
.094
[2,39]
.048 TYP .097
[1,22] [2,46]
.097
[2,46]
.500
(12,70)
.500
(12,70)
.048 TYP
[1,22]
.028 TRAVEL
[0,71]
KS12
KS11
CONTACT MATERIAL
OPTION
CODE
CONTACT
MATERIAL
TERMINAL
PLATING RATINGS
Q SILVER SILVER
B
GOLD GOLD
2
1
POWER 25 mA MAX. @ 50 V AC OR DC MAX.
2
1
LOW LEVEL/DRY CIRCUIT 0.4 VA MAX. @ 20 V AC OR DC MAX.
NOTE: Any models supplied with Q or B contact material are RoHS compliant.
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.
SEAL
D
NO EPOXY SEAL
E
EPOXY SEAL
Key Switches
D
EPOXY
Dimensions are shown: mm
Specifications and dimensions subject to change
D–24
www.ckswitches.com