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參數資料
| 型號： | MDAG05 |
| 廠商： | ITT Corporation |
| 英文描述： | MD and MDP Key Switches |
| 中文描述： | MD和新千年民主黨的關鍵開關 |
| 文件頁數： | 1/2頁 |
| 文件大小： | 49K |
| 代理商： | MDAG05 |
Dimensions are shown in mm (inch)
Dimensions subject to change
www.ittcannon.com
B-13
MD and MDP Key Switches
The disc contact type ED is a momentary
key switch with short travel and good
tactile feedback.
The ED is the main component of the
MD and MDP switches.
MDP-Disc push-button key switch
Small momentary key switch equipped
with button, can be mounted on printed
circuit board.
MD-Disc push-button key switch
Small momentary key switch including
a protective rubber actuator.
A wide range of keyboards can be built
by using the MD.
MD and MDP key pads are available in
two contact materials:
gold plated bronze
silver plated bronze
Construction
Function
Contact arrangement
Distance between button centers, min.
Terminals
Momentary
1 make contact = SPST
12.7 (0.500)
PC pins
Electrical data
Switching power max.
Switching voltage max.
Switching current max.
Dielectric strength (50 Hz/1 Min.)
Operating life with
max. switching power
Contact resistance, initial
Insulation resistance
Contact bounce
Silver
6 W AC/DC
100 V AC/DC
100 mA AC/DC
300 V
10
6
2
10
5
10 m
10
11
100 μs
Gold
3 W AC/DC
100 V AC/DC
50 mA AC/DC
300 V
5
10
6
2
10
5
15 m
10
11
100 μs
MD
MDP
Mechanical data
Switching travel
Operating force
MD
0.6 (0.0236)
2.6N ± 25%
(260 grams ± 25%)
MDP
0.3 (0.0118)
2.4N ± 25%
(240 grams ± 25%)
Further data
Contact material
Operating temperature
Storage temperature
Climatic category (days)
Silver Gold
– 25°C to + 70°C
1
)
– 40°C to + 85°C
10 for silver version
56 for gold version
255°C for 5 seconds
Soldering by static bath
1
) Special design for ambient temperature – 40°C to + 85°C (Type MD40) available (not washable in solvents)
Note: MD40 disc keyswitch conforms to climatic category 40/85/56.
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