\HH—{H—{H—H
4 J \
4
,1“
Key Switches
D
D–25
Dimensions are shown: mm
Specifications and dimensions subject to change
www.ckswitches.com
DIGITAST
Microminiature SPDT, Key Switches
Series
SER Narrow button
SET Wide button
SERU Switch body
only (no button)
LED
NONE No LED
L 1 LED
2L 2 LED’s Button Color**
None (SERU)
BK Black
GY Gray
WH White
RD Red
BU Blue
1st LED Color***
NONE No LED
RD Red
YE Yellow
GN Green
A U
Function
EE Latching
OA Non-latching
Contact Material
AU Gold
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. Some of the configurations may not be available
or could require some development.
Features/Benefits
•
High reliability/long life
•
Designed for low level
switching
•
Ready to implement on PCB
•
Latching function available
•
Several button options
•
RoHS compliant and compatible
Typical Applications
•
Medical
•
Instrumentation
•
Industrial electronics
• Audio electronics
Electrical
SWITCHING POWER MAX.: 240 mW DC
SWITCHING VOLTAGE MAX.: 24 V DC
SWITCHING CURRENT MAX.: 10 mA DC
CARRYING CURRENT AT 20˚C (push-push version): 100 mA
DIELECTRIC STRENGTH (50 Hz, 1 min): 500 V
OPERATING LIFE with or without max. switching power
Momentary: ≥ 5 x 10
6
operations
Push-push: ≥ 5 x 10
5
operations
CONTACT RESISTANCE: Initial ≤ 50 mΩ
After 5 x 10
6
operations: ≤ 100 mΩ
INSULATION RESISTANCE: ≥ 10
10
Ω
CAPACITANCE at f= 10 kHz: ≤ 0.8pF
BOUNCE TIME: ≤ 2.5 ms
Operating speed 400 mm/s (15.75/s)
Environmental
OPERATING TEMPERATURE: -25˚C to 85˚C.
Construction
FUNCTION: momentary or push-push
CONTACT ARRANGEMENT: 1 change over contact SPDT, NO
MODE OF SWITCHING: Non-shorting
DISTANCE BETWEEN BUTTON CENTERS:
HORIZONTAL MINIMUM: 12,7 (0.500) or 17,78 (0.700)
VERTICAL MINIMUM: 17,78 (0.700)
TERMINALS: PC pins
MOUNTING: Soldering, centering pins
Mechanical
TOTAL TRAVEL: ≤ 3 (.0018)
SWITCHING TRAVEL: 1,5 (0.0591)
LATCHING TRAVEL: 1,8 (0.0709)
OPERATING FORCE: 1.5 +/- 0.5 N (150 +/- 50 grams)
Process
SOLDERABILITY:
Wave soldering, compatible with lead free soldering profile
Hand soldering, 350˚C for 3 seconds
2nd LED Color***
NONE No LED
RD Red
YE Yellow
GN Green
Button Style
SR Narrow
ST Wide Button Color**
BK Black
GY Gray
WH White
RD Red
BU Blue
K
LED Spacing*
NONE Narrow LED Spacing
(TYP Europe)
7.62 Wide LED Spacing
(TYP No. America)
Body Color
NONE White (STD)
BRN Brown
LED Holes
NONE No LED holes
L 1 LED hole
2L 2 LED holes Latching
None For use with momentary switch
EE With “EE” staple for latching
* LED spacing only applies when 1 LED requested
** Additional button colors available by request
*** Additional LED colors available by request including Bi color configurations
Switch
Button
Reference
SER BK AU OA
Reference
SRK BK
Ave
E
g
E}: % @‘Efifi
'7 3 3“?
fiilmé
Key Switches
D
D–26
Dimensions are shown: mm
Specifications and dimensions subject to change
www.ckswitches.com
DESIGNATION
(0.3)
(0.1)
(0.484)
(0.2)(0.2)
(0.6)
(0.4)
(0.680)
(0.315)
(0.563)
(0.0394)
(0.177)
(0.0276)
[0.0157]
(0.0394)
10,16
12,3
7,62
2,54
14,74
5,085,08
17,5
1
14,3
8
1ø 0,7
0,4
4,5
(0.484)
(0.673)
12,3
17,1
2
21
00
SER2LSERLSER
Total travel
3 (0.118)
Switching travel 1.5 (0.0591)
1st LED
2nd LED
Total travel
3 (0.118)
Switching travel 1.5 (0.0591)
SET2LSETLSET
(0.563)
14,3
(0.681)
(0.673)
17,3
17,1
2
21
00
1st LED
2nd LED
DIGITAST
Microminiature SPDT, Key Switches
SER
NARROW BUTTON
SET
WIDE BUTTON
SERU
NO BUTTON
[0.787]
[0.177]
[0.0197]
[0.311]
[0.0276]
[0.015]
[0.0394]
[0.3]
[0.484]
[0.2]
[0.6]
[0.681]
2
21
00
2
1ø
0.5
7.9
7.62
12.3
15.24
5.08
17.3
4.5
0.7
0.4
E
FFFFFF
Key Switches
D
D–27
Dimensions are shown: mm
Specifications and dimensions subject to change
www.ckswitches.com
OPTION
CODE MATERIAL
AU
Gold
[0.6]
[0.2] [0.1]
[0.3]
[0.4]
[0.2]
[0.1]
00
21
+
+
-
[0.6]
[0.2] [0.1]
[0.3]
0
21
0
7,62
5,08 2,54
15,24
ø 1.0±0.1 (0.0394±0.00349)
ø 1.1±0.05 (0.0433±0.00197)
[0.6]
[0.2] [0.1]
[0.3]
[0.4]
[0.2]
[0.1]
00
21
+
+
-
7,62
2,54
10,16
5,08 5,08 2,54
15,24
7,62
15,24
2,545,085,08
10,16
2,54
[0.6]
[0.2] [0.1]
[0.3]
[0.4]
[0.2]
[0.1]
00
21
+
-
7,62
15,24
2,545,085,08
10,16
2,54
FUNCTION
OPTION
CODE COLOR SCHEMATIC
OA
Momentary
EE
Push-Push
0
01
2
0
01
2
CONTACT MATERIAL
BK
BLACK
GY
GRAY
Other button colors available by request [red (RD), green (GN), white (WH), yellow (YE) , blue (BU) , orange (OG)].
LED COLOR
OPTION
CODE COLOR
NONE
Models without LED
RD
Red
GN
Green
YE
Yellow
BUTTON COLOR
NONE
NO LED
L
1 LEDs
2L
2 LEDs
7.62 mm Spacing (TYP No. America)
NARROW SPACING (TYP EUROPE)
TOP VIEW OF PCB
DIGITAST
Microminiature SPDT, Key Switches
LED
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