DIGITAST
Microminiature SPDT, Key Switches
Features/Benefits
• High reliability/long life
• Designed for low level
•
•
•
•
switching
Typical Applications
• Medical
• Instrumentation
• Industrial electronics
Ready to implement on PCB
• Audio electronics
Latching function available
Several button options
RoHS compliant and compatible
Construction
Electrical
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
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 106 operations
Push-push: ≥ 5 x 105 operations
CONTACT RESISTANCE: Initial ≤ 50 mΩ
After 5 x 106 operations: ≤ 100 mΩ
INSULATION RESISTANCE: ≥ 1010 Ω
CAPACITANCE at f= 10 kHz: ≤ 0.8pF
BOUNCE TIME: ≤ 2.5 ms
Operating speed 400 mm/s (15.75/s)
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)
Environmental
Process
OPERATING TEMPERATURE: -25˚C to 85˚C.
SOLDERABILITY:
Wave soldering, compatible with lead free soldering profile
Hand soldering, 350˚C for 3 seconds
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.
Switch
A
Reference
SER BK AU OA
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
LED Spacing*
NONE Narrow LED Spacing
(TYP Europe)
7.62 Wide LED Spacing
(TYP No. America)
Button
Reference
SRK BK
D
1st LED Color***
NONE No LED
RD
Red
YE
Yellow
GN
Green
Function
EE Latching
OA Non-latching
Contact Material
AU Gold
2nd LED Color***
NONE No LED
RD
Red
YE
Yellow
GN
Green
Body Color
NONE White (STD)
BRN Brown
K
Button Style
SR Narrow
ST Wide
LED Holes
NONE No LED holes
L
1 LED hole
2L
2 LED holes
* LED spacing only applies when 1 LED requested
** Additional button colors available by request
*** Additional LED colors available by request including Bi color configurations
Button Color**
BK Black
GY Gray
Latching
WH White
None For use with momentary switch
RD Red
EE
With “EE” staple for latching
BU Blue
Dimensions are shown: mm
Specifications and dimensions subject to change
D–29
www.ck-components.com
Key Switches
Series
SER Narrow button
SET Wide button
SERU Switch body
only (no button)
U
DIGITAST
Microminiature SPDT, Key Switches
DESIGNATION
NARROW BUTTON
10,16
(0.4)
14,74
(0.6)
SERL
4,5
Total travel
3 (0.118)
Switching travel 1.5 (0.0591)
0,4
[0.0157]
ø1
(0.0394)
SER
(0.177)
8
1 (0.315)
(0.2)
(0.0394)
5,08 5,08
14,3
12,3
(0.484)
0 0
221
7,62
(0.3)
(0.2)
(0.563)
(0.1)
17,5
(0.680)
2,54
SER
0,7
(0.0276)
SER2L
12,3
(0.484)
1st LED
2nd LED
17,1
(0.673)
14,3
(0.563)
0 0
WIDE BUTTON
221
SET
SET
SETL
Total travel
3 (0.118)
Switching travel 1.5 (0.0591)
SET2L
17,3
(0.681)
1st LED
2nd LED
17,1
(0.673)
SERU
17.3
NO BUTTON
[0.681]
15.24
D
12.3
[0.484]
1
2
2
0
7.62
[0.3]
0
Key Switches
[0.6]
5.08
[0.0197]
4.5
[0.787]
ø1
[0.0394]
[0.177]
[0.311]
2
7.9
0.5
[0.2]
0.4
[0.015]
0.7
[0.0276]
Dimensions are shown: mm
Specifications and dimensions subject to change
D–30
www.ck-components.com
DIGITAST
Microminiature SPDT, Key Switches
LED
NONE
L
NO LED
2L
1 LEDs
2 LEDs
2,54
[0.2]
[0.1]
[0.1]
7,62
[0.3]
1
0
5,08
2,54
-
[0.3]
7,62
1
0
2
0
[0.1]
2,54
2
+
-
1
0
7,62
[0.3]
0
2
0
7.62 mm Spacing (TYP No. America)
+
5,08
2,54
[0.2]
[0.2]
10,16
[0.1]
15,24
[0.6]
[0.4]
5,08
+
5,08
5,08
2,54
[0.2]
[0.2]
[0.1]
10,16
[0.4]
15,24
15,24
[0.6]
[0.6]
2,54
ø 1.0±0.1 (0.0394±0.00349)
ø 1.1±0.05 (0.0433±0.00197)
1
0
-
7,62
[0.3]
2
0
+
[0.1]
NARROW SPACING (TYP EUROPE)
+
5,08
5,08
[0.2]
[0.2]
2,54
[0.1]
10,16
[0.4]
15,24
[0.6]
TOP VIEW OF PCB
BUTTON COLOR
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
RD
GN
YE
Models without LED
D
Red
Green
Key Switches
Yellow
CONTACT MATERIAL
OPTION
CODE
MATERIAL
AU
Gold
FUNCTION
OPTION
CODE
COLOR
OA
Momentary
EE
SCHEMATIC
0
2
0
1
Push-Push
0
2
0
1
Dimensions are shown: mm
Specifications and dimensions subject to change
D–31
www.ck-components.com
Mouser Electronics
Authorized Distributor
Click to View Pricing, Inventory, Delivery & Lifecycle Information:
C&K Components:
SER BU AU OA SERL BK GN 7.62 AU OA SET GY AU OA SER GN AU OA SET BU AU OA SERL BK RD 7.62 AU
OA SETL BK GN 7.62 AU EE SER BK AU OA SER YE AU OA SET BK AU OA SER RD AU OA SETL BK RD 7.62
AU OA STK2L BK SER WH AU OA SER GY AU OA STK BK SERL GY RD 7.62 AU OA SE T L GY RD 7.62 AU OA
SER BK AU EE SER GY AU EE SER RD AU EE SERL BK GN AU EE SERL BK RD 7.62 AU EE SERUL RD 7.62
AU OA SET BK AU EE SETL BK GN AU EE SETL BK RD 7.62 AU EE SRK BK SRK BU SRK GN SRK GY SRK
RD SRKL BK STK BU STK GY STK RD STKL BK STKL GY SERU2LYEYEAU0A SERU2LYEGNAU0A
SERU2LYERDAU0A SERU2LGNYEAU0A SERU2LGNGNAU0A SERU2LGNRDAU0A SERU2LRDYEAU0A
SERU2LRDRDAU0A SERULYEAU0A SERULYE7.62AU0A SERULGNAU0A SERULGN7.62AU0A SERULRDAU0A
SERLRDRDAUEE SET2LGYYEGNAUEE SET2LGYRDGNAUEE SET2LGYGNGNAUEE SET2LGYGNYEAUEE
SET2LGYGNRDAUEE SETLGYRD7.62AUEE SETLGYYEAUEE SETLGYGNAUEE SETLGYRDAUEE SETGYAUEE
SER2LGYRDGNAUEE SER2LGYRDYEAUEE SER2LGYGNRDAUEE SERLGYRD7.62AUEE SERLGYYEAUEE
SERLGYGNAUEE SERLGYRDAUEE SET2LBKGNGNAUEE SET2LBKYEYEAUEE SET2LBKGNRDAUEE
SET2LBKRDRDAUEE SET2LBKYEGNAUEE SET2LBKYERDAUEE SET2LBKRDYEAUEE SET2LBKRDGNAUEE
SETLBKYE7.62AUEE SETLBKYEAUEE SETLBKRDAUEE SER2LBKYERDAUEE SER2LBKGNRDAUEE
SER2LBKRDGNAUEE SER2LBKRDRDAUEE SER2LBKRDYEAUEE SERLBKYE7.62AUEE SERLBKYEAUEE
SERLBKRDAUEE SERULRDAUEE SERUAUEE SETLRDRDAU0A SERLRDGNAU0A SERLRDRDAU0A
SERLYEYEAU0A SERLGNGNAU0A SET2LGYYEGNAU0A SET2LGYGNRDAU0A SET2LGYGNGNAU0A
SET2LGYRDRDAU0A SET2LGYRDYEAU0A