![](http://datasheet.mmic.net.cn/230000/7914J-1-000_datasheet_15568764/7914J-1-000_21.png)
SDTG-610/620/630/650/660
6.50
±
0.50
(.256
±
.020)
7.90
±
0.50
4.30
(.169)
C
6.0
(.236)
4.50
±
0.20
(.177
±
.008)
3.50
3.60
(.142)
3.50
±
0.50
(.138
±
.020)
0.40
1.80
(.071)
0.30
(.012)
C
C
1.50
(.059)
0.70
(.028)
H
±
0.20
(H
±
.008)
SDTG-644/648
B
A
0.70
(.028)
15
°
C
6.5
±
0.1
(.256
±
.004)
1.0
±
.002) DIA
(.039
±
5 PLCS.
4.5
±
0.1
(.177
±
.004)
T4
T3
T1
T2
T5
4.1
±
0.1
(.161
±
.004)
RECOMMENDED PCB LAYOUT
CIRCUIT DIAGRAM
4.10
(.161)
DIM. MM
A
B
IN.
.094
.063
2.4
1.6
SDTG-644
SDTG-648
DIM. MM
A
B
IN.
.110
.079
2.8
2.0
SDT Series Tact Switch
Features
I
Available sharp click feel with a positive
tactile feedback
I
Ultra-miniature and lightweight structure
suitable for high density mounting
I
Economical with high reliability
Applications
I
Electronic toys
I
Radios
I
Stereos
I
Remote controls
Electrical Characteristics
Electrical Life
O. Force R ................100,000 cycles min.
O. Force K+N ............500,000 cycles min.
Rating ..................................DC 12V 50 mA
Contact Resistance ......100 milliohms max.
Insulation Resistance
..................100 megohms, DC 500V min.
Dielectric Strength ....250V AC for 1 minute
Contact Arrangement........1 pole 1 position
Environmental Characteristics
Mechanical Lifetime ....100,000 cycles min.
Operation Force ........................260g ±50g,
160g ±50g, 100g ±50g
Stop Strength............Place the switch such
that vertical, a static load of 3kg shall
be applied in the direction of actuator
operation for a period of 15 sec.
Stroke
6mm type ..................0.25 + 0.2/- 0.1mm
12mm type..........................0.35 ± 0.1mm
Temperature Range ............-20°C to +70°C
Vibration Test........................Mil-STD-202F,
Method 201A
Frequency ..............10-55-10 Hz/1 minute
Directions ................X,Y,Z, three mutually
perpendicular directions
Time......................2 hours each direction.
High reliability
Shock Test ..........................MIL-STD-202F,
Method 213B, Condition A
Gravity ............50G (peak value), 11 msec
Direction & Times....................6 sides and
3 times in each direction.
High reliability
Physical Characteristics
Cover Materials
........................Steel tin plated, 100
μ
min.
Base Materials ......UL94V-0 PBT plus glass
fiber reinforced
Cover/Base Color................................Black
Actuator Materials ................Dulacon POM
plus glass fiber reinforced
Actuator Color ................Black, brown, red
Contact Disc Materials ....Phosphor bronze
with silver cladding
Terminal Materials
..........................Brass with silver cladding
Wave Soldering Process
..........Recommended solder temperature
at 260°C (500°F) max., 5 seconds
Hand Soldering Process
................Use a soldering iron of 30 watts
or less, controlled at 320°C (608°F)
for approximately 2 seconds while
applying solder
Packaging ..................1,000 pieces per bag
SDTX-644/648
B
A
0.70
(.028)
15
°
C
6.5
±
0.1
(.256
±
.004)
1.0
±
.002) DIA
(.039
±
4 PLCS.
4.5
±
0.1
(.177
±
.004)
T1
T2
T4
T3
RECOMMENDED PCB LAYOUT
CIRCUIT DIAGRAM
SDTX-644
DIM. MM
A
B
SDTX-648
DIM. MM
A
B
SDTX-610/620/630/650/660
6.50
±
0.50
(.256
±
.020)
7.90
±
0.50
(.311
±
.020)
4.30
(.169)
C
6.0
(.236)
4.50
±
0.20
(.177
±
.008)
3.50
3.50
(.138)
H
±
0.20
(H
±
.008)
3.50
±
0.50
(.138
±
.020)
0.50
1.80
(.071)
0.30
(.012)
C
C
IN.
.094
.063
2.4
1.6
IN.
.110
.079
2.8
2.0
Specifications are subject to change without notice.
359
Product Dimensions
DIMENSIONS: (IN)