SDT Series – Tact Switch
Features
ꢀ
Available sharp click feel with a
positive tactile feedback
ꢀ
Insert molding in the contact with
special treatment prevents flux
buildup during soldering and permits
autodipping
ꢀ
Ultra-miniature and lightweight
structure suitable for high density
mounting
ꢀ
RoHS compliant†
ꢀ
Economical with high reliability
Electrical Characteristics
Product Dimensions
Electrical Life
SDTX-610/620/630/650/660
SDTG-610/620/630/650/660
..................500,000 cycles min. for 260 g
1,000,000 cycles min. for 100 g, 160g
Rating.................................DC 12 V 50 mA
Contact Resistance .....100 milliohms max.
Insulation Resistance
6.0
(.236ꢀ
6.0
(.236ꢀ
4.30
(.169ꢀ
4.30
(.169ꢀ
C
L
C
L
T
4
T
3
T
T
2
1
.................100 megohms, DC 500 V min.
Dielectric Strength...250 V AC for 1 minute
Contact Arrangement.......1 pole 1 position
4.50 0.20
(.177 .00ꢁꢀ
4.50 0.20
(.177 .00ꢁꢀ
C
C
L
L
T
2
T
T
T
4
1
3
T
5
0.50
(.020ꢀ
Environmental Characteristics
MAX.
3.50
(.13ꢁꢀ
DIA.
1.50
(.059ꢀ
C
L
Operation Force......................260 g 50 g,
160 g 50 g, 100 g 50 g
Stop Strength ..........Place the switch such
that vertical, a static load of 3 kg shall
be applied in the direction of actuator
operation for a period of 15 sec.
Stroke
0.40
MAX.
(.016ꢀ
3.50
(.13ꢁꢀ
DIA.
C
L
H
0.20
(H .00ꢁꢀ
H
0.20
3.50
(H .00ꢁꢀ
0.30
(.012ꢀ
(.13ꢁꢀ
6mm type ...................0.25 +0.2/-0.1 mm
12mm type.........................0.35 0.1 mm
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
3.60
(.142ꢀ
1.ꢁ0
(.071ꢀ
0.30
(.012ꢀ
6.50 0.50
(.256 .020ꢀ
7.90 0.50
(.311 .020ꢀ
3.50 0.50
(.13ꢁ .020ꢀ
0.70
(.02ꢁꢀ
1.ꢁ0
(.071ꢀ
3.50 0.50
(.13ꢁ .020ꢀ
6.50 0.50
(.256 .020ꢀ
7.90 0.50
(.311 .020ꢀ
SDTX-644/648
SDTX-644
mm/(in)
A
B
Dim.
C
L
2.4 +.1/-0
(.094 +.004/-0)
SDTG-644/648
A
B
SDTG-644
A
B
Dim.
mm/(in)
1.6 +.1/-0
(.063 +.004/-0)
C
L
2.4 +.1/-0
(.094 +.004/-0)
Gravity..........50 G (peak value), 11 msec
Direction & Times ..................6 sides and
3 times in each direction.
4.10
(.161ꢀ
A
B
SDTX-648
mm/(in)
1.6 +.1/-0
(.063 +.004/-0)
Dim.
High reliability
2.8 +.1/-0
(.110 +.004/-0)
A
SDTG-648
mm/(in)
Physical Characteristics
Dim.
2.0 +.1/-0
(.079 +.004/-0)
Cover Materials...................................Steel
Base Materials .....UL94V-0 PBT plus glass
fiber reinforced
Cover/Base Color...............................Black
Actuator Materials ................Dulacon POM
plus glass fiber reinforced
0.70
(.02ꢁꢀ
B
15°
2.8 +.1/-0
(.110 +.004/-0)
A
RECOMMENDED PCB LAYOUT
2.0 +.1/-0
(.079 +.004/-0)
B
0.70
(.02ꢁꢀ
6.5 0.1
(.256 .004ꢀ
4.5 0.1
(.177 .004ꢀ
15°
Actuator Color ...............Black, brown, red
Contact Disc Materials....Phosphor bronze
with silver cladding
CIRCUIT DIAGRAM
T
T
3
4
Terminal Materials
........................Brass with silver cladding
Wave Soldering Process
T
T
1
1.0 0.05
(.039 .002ꢀ
4 PLCS.
2
DIA
T
5
.........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
CIRCUIT DIAGRAM
RECOMMENDED PCB LAYOUT
T
T
2
1
6.5 0.1
(.256 .004ꢀ
4.5 0.1
(.177 .004ꢀ
T
T
4
3
Packaging .................1,000 pieces per bag
Specifications are subject to change without notice.
†RoHS Directive 2002/95/EC Jan 27 2003 including Annex.
Customers should verify actual device performance in
DIMENSIONS: MM/(INCHESꢀ
1.0 0.05
(.039 .002ꢀ
5 PLCS.
DIA
4.1 0.1
(.161 .004ꢀ
their specific applications.
REV 09/04
134