ED & EDM Dome Series Datasheet by C&K

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ET fT WEE j T TT
Key Switches
D
D–28
Dimensions are shown: mm
Specifications and dimensions subject to change
www.ckswitches.com
Features
Short travel
Good tactile feedback
Self cleaning
3 actuation forces
RoHS
Typical Applications
Aircraft
Instrument
Panels
Radio equipment
Electrical
Silver Gold
MAXIMUM POWER: 1.0 VA 0.2 VA
MAXIMUM VOLTAGE: 100 VDC 100 VDC
MINIMUM VOLTAGE: 20m VDC 20m VDC
MIN/MAX CURRENT: 1.0 mA - 100 mA 50µA - 50 mA
DIELECTRIC STRENGTH: ≥ 250 Vrms
CONTACT RESISTANCE: ≤ 100 mΩ
INSULATION RESISTANCE: Initial measurement: ≥ 1 GΩ
(between terminals) After damp heat: ≥ 10 MΩ
BOUNCE TIME: ≤ 3 ms
Environmental
Silver Gold
OPERATING TEMPERATURE: -25˚C to 70˚C -55˚C to 85˚C
Specification
ED: Disc element
EDM: Disc element and double dome
FUNCTION: Momentary action
CONTACT TYPE: Normally open - SPST
TERMINALS: Through hole PCB terminations or Tabs
OPERATING LIFE: 1,000,000
Packaging
Trays 50 pieces.
Mechanical
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.
Operating force Tactile Return
Type Newtons (grams) Feeling (∆%) Force N Travel (mm)
EDSAC LFS 2.4 (240) ± 25% ≥ 30% ≥ 0.4 N 0.3mm ± 0.15
EDSSC LFS 2.4 (240) ± 25% ≥ 30% ≥ 0.4 N 0.3mm ± 0.15
EDM450SAC LFS 4.5 (450) ± 25% ≥ 25% ≥ 1.0 N 0.5mm ± 0.25
EDM650SSC LFS 6.5 (650) ± 25% ≥ 25% ≥ 1.6 N 0.6mm ± 0.25
SIMULTANEITY: ≤ 0.05 mm
Contact Material
S Silver
G Gold
Lead Free Compatible
LFS RoHS, Silver tabs **
LFG RoHS, Gold tabs **
LFT RoHS, Pure tin (terminals only) *
Terminals
AC with pc pins*
SC with tabs **
E D 1
Disc
1 Sealed, IP 67
Operation Force
450 4.5 N (450 grams)
650 6.5 N (650 grams)
Lead Free Compatible
LFS RoHS, Silver tabs **
LFG RoHS, Gold tabs **
LFT RoHS, Pure tin (terminals only) *
Contact Material
S Silver
G Gold
D M C
S S
Terminals
AC with pc pins *
SC with tabs **
L F G
E5 0
4
ED & EDM Domes
Note
* AC terminals only available with LFT
** SC terminals only available with LFS or LFG
Key Switches
D
D–29
Dimensions are shown: mm
Specifications and dimensions subject to change
www.ckswitches.com
ED & EDM Domes
Switch Action Principal
The disc contact is essentially made
of two separate conductive dome
diaphragms separated by an
insulated material.
The upper diaphragm is shaped so
that under pressure it collapses
suddenly and establishes contact
with the lower diaphragm.
Upper Diaphragm
Lower Diaphragm
Pressure
Insulating
washer
Circular contact area
Switch in resting position Switch in active position
BB
10,35
±
0,15
ø
11,8
±
0,15
1,2
+0,06
-0,1
Apres assemblage
11,3
±
0,15
90˚
36˚
ø
1,2
0
-0,1
max
( sur clinquants )
10,8
12,7
±
0,3
2
±
0,3
0,5
+0,02
-0,04
0,35 ( course relative )
0,55±0,1
0,9±0,1
10
+0,2
0
15
±
0,2
4,5
±
0,5
IMPLANTATION CIRCUIT IMPRIME
Zone de soudure ultra sons
ø
0,05
A
0,01
A
10,35
±
0,15
ø
11,8
±
0,15
1,2
+0,06
-0,1
12,7±0,3
2
+0,03
-0,01
max
( sur clinquants )
10,8
11,3
0,1
A
0,25
A
ED EDM

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