ED & EDM Domes
Features
•
•
•
•
•
Short travel
Good tactile feedback
Self cleaning
3 actuation forces
Typical Applications
• Aircraft
• Instrument
• Panels
• Radio equipment
RoHS
Specification
Electrical
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
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
Packaging
Trays 50 pieces.
Environmental
Mechanical
Silver
Gold
OPERATING TEMPERATURE: -25˚C to 70˚C
Operating force
Tactile
Type
Newtons (grams) Feeling (∆%)
EDSAC LFS
2.4 (240) ± 25%
≥ 30%
EDSSC LFS
2.4 (240) ± 25%
≥ 30%
EDM450SAC LFS 4.5 (450) ± 25%
≥ 25%
EDM650SSC LFS 6.5 (650) ± 25%
≥ 25%
Return
Force N
≥ 0.4 N
≥ 0.4 N
≥ 1.0 N
≥ 1.6 N
-55˚C to 85˚C
Travel (mm)
0.3mm ± 0.15
0.3mm ± 0.15
0.5mm ± 0.25
0.6mm ± 0.25
SIMULTANEITY: ≤ 0.05 mm
How To Order
Key Switches
D
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.
E
1
D
Contact Material
S Silver
G Gold
Terminals
AC with pc pins*
SC with tabs **
E
D
M
4
Operation Force
450 4.5 N (450 grams)
650 6.5 N (650 grams)
5
0
Lead Free Compatible
LFS RoHS, Silver tabs **
LFG RoHS, Gold tabs **
LFT RoHS, Pure tin (terminals only) *
Disc
1 Sealed, IP 67
S
S
C
L
Contact Material Terminals
AC with pc pins *
S Silver
SC with tabs **
G Gold
F
G
Lead Free Compatible
LFS RoHS, Silver tabs **
LFG RoHS, Gold tabs **
LFT RoHS, Pure tin (terminals only) *
Note
* AC terminals only available with LFT
** SC terminals only available with LFS or LFG
Dimensions are shown: mm
Specifications and dimensions subject to change
D–28
www.ckswitches.com
ED & EDM Domes
ED
EDM
11,3 ±0,15
B
11,3
B
10,8 max
( sur clinquants )
0,01
12,7 ±0,3
10,35±0,15
+0,06
1,2 -0,1
10,8 max
( sur clinquants )
+0,06
1,2 -0,1
Apres assemblage
0
1,2
ø0,05 A ø -0,1
0,1
2±0,3
A
90˚
12,7±0,3
A
0,25 A
ø 11,8±0,15
+0,03
2 -0,01
36˚
ø 11,8±0,15
Zone de soudure ultra sons
10+0,2
0
15±0,2
0,55±0,1
+0,02
0,5 -0,04
4,5 ±0,5
IMPLANTATION CIRCUIT IMPRIME
0,9±0,1
0,35 ( course relative )
10,35±0,15
D
Key Switches
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
Pressure
Lower Diaphragm
Switch in resting position
Insulating
washer
Circular contact area
Switch in active position
Dimensions are shown: mm
Specifications and dimensions subject to change
D–29
www.ckswitches.com
