sdtx-244 Bourns, Inc., sdtx-244 Datasheet
sdtx-244
Manufacturer Part Number
sdtx-244
Description
Sdt Series Tact Switch
Manufacturer
Bourns, Inc.
Datasheet
1.SDTX-244.pdf
(3 pages)
Electrical Life
Rating ..................................DC 12 V 50 mA
Contact Resistance ......100 milliohms max.
Insulation Resistance
Dielectric Strength ....250 V AC for 1 minute
Contact Arrangement ........1 pole 1 position
Operation Force ......................260 g ±50 g,
Stop Strength............Place the switch such
Stroke
Temperature Range ..........-20 °C to +70 °C
Vibration Test........................Mil-STD-202F,
Shock Test ..........................MIL-STD-202F,
Cover Materials
Base Materials ......UL94V-0 PBT plus glass
Cover/Base Color................................Black
Actuator Materials ................Dulacon POM
Actuator Color ................Black, brown, red
Contact Disc Materials ....Phosphor bronze
Terminal Materials
Hand Soldering Process
Wave Soldering Process
Packaging ..................1,000 pieces per bag
*RoHS Directive 2002/95/EC Jan 27 2003 including Annex.
Specifications are subject to change without notice.
Customers should verify actual device performance in their specific applications.
Electrical Characteristics
Environmental Characteristics
Physical Characteristics
6mm type ..................0.25 + 0.2/- 0.1 mm
12mm type ........................0.35 ± 0.1 mm
Frequency ..............10-55-10 Hz/1 minute
Directions ................X,Y,Z, three mutually
Time......................2 hours each direction.
Gravity ..........50 G (peak value), 11 msec
Direction & Times....................6 sides and
..........................Brass with silver cladding
....................Preheat 100 °C / 60 seconds
..................100 megohms, DC 500 V min.
..........................................................Steel
..............350 °C ±10 °C / 5 seconds max.
..................500,000 cycles min. for 260 g
1,000,000 cycles min. for 100 g, 160 g
that vertical, a static load of 3 kg shall
be applied in the direction of actuator
operation for a period of 15 sec.
Method 213B, Condition A
plus glass fiber reinforced
160 g ±50 g, 100 g ±50 g
260 °C ±5 °C / 5 seconds
3 times in each direction.
perpendicular directions
with silver cladding
fiber reinforced
High reliability
High reliability
Method 201A
SDT Series Tact Switch
Features
SDTX-610/620/630/650/660
CIRCUIT DIAGRAM
RECOMMENDED PCB LAYOUT
SDTX-644/648
Product Dimensions
Available sharp click feel with a positive
tactile feedback
Ultra-miniature and lightweight structure
suitable for high density mounting
Economical with high reliability
RoHS compliant*
(.028)
0.70
(.071)
(.020)
(.256 ± .004)
0.50
1.80
6.5 ± 0.1
B
T 3
A
T 1
MAX.
T 1
T 3
C L
DIMENSIONS:
(.311 ± .020)
(.256 ± .020)
7.90 ± 0.50
6.50 ± 0.50
(.039 ± .002)
(.012)
(.169)
0.30
4.30
1.0 ± 0.05
4 PLCS.
C L
C L
15°
DIM.
DIM.
MM
(IN)
(.138)
3.50
A
B
A
B
DIA
C L
(.236)
T 4
6.0
T 2
(.138)
(.177 ± .004)
T 2
T 4
3.50
SDTX-644
SDTX-648
DIA.
(.094 + .004/-0)
(.063 + .004/-0)
(.110 + .004/-0)
(.079 + .004/-0)
4.5 ± 0.1
(.177 ± .008)
4.50 ± 0.20
1.6 + .1/-0
2.0 + .1/-0
2.4 +.1/-0
2.8 +.1/-0
(.138 ± .020)
MM/(IN)
MM/(IN)
3.50 ± 0.50
(H ± .008)
H ± 0.20
SDTG-644/648
CIRCUIT DIAGRAM
SDTG-610/620/630/650/660
RECOMMENDED PCB LAYOUT
Insert molding in the contact with special
treatment prevents flux buildup during
soldering and permits autodipping
(.161)
4.10
(.028)
0.70
The SDT Series is currently available,
(.016)
(.071)
0.40
1.80
(.256 ± .004)
although not recommended for new
6.5 ± 0.1
(.161 ± .004)
designs.
T 4
T 2
4.1 ± 0.1
MAX.
A
B
T 4
T 2
(.012)
0.30
(.256 ± .020)
7.90 ± 0.50
6.50 ± 0.50
C L
(.169)
4.30
C L
C L
T 5
(.028)
0.70
T 5
(.059)
(.138)
3.50
1.50
DIM.
DIM.
C L
15°
(.236)
A
B
A
B
T 3
T 1
(.177 ± .004)
6.0
T 3
T 1
DIA.
(.142)
4.5 ± 0.1
3.60
(.039 ± .002)
SDTG-644
SDTG-648
(.094 + .004/-0)
(.063 + .004/-0)
(.110 + .004/-0)
(.079 + .004/-0)
(.177 ± .008)
(.138 ± .020)
1.0 ± 0.05
4.50 ± 0.20
3.50 ± 0.50
5 PLCS.
(H ± .008)
H ± 0.20
1.6 + .1/-0
2.0 + .1/-0
2.4 +.1/-0
2.8 +.1/-0
MM/(IN)
MM/(IN)
DIA
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sdtx-244 Summary of contents
Page 1
... SDTX-644/648 SDTX-644 A DIM. MM/(IN) B 2.4 +.1/- (.094 + .004/-0) 1.6 + .1/-0 B (.063 + .004/-0) SDTX-648 DIM. MM/(IN) 2.8 +.1/-0 A (.110 + .004/-0) 2.0 + .1/-0 B (.079 + .004/-0) 0.70 15° (.028) RECOMMENDED PCB LAYOUT 6.5 ± 0.1 4.5 ± 0.1 (.256 ± .004) (.177 ± .004) 1.0 ± ...
Page 2
... PLCS. CIRCUIT DIAGRAM GROUND TERMINAL Customers should verify actual device performance in their specific applications. SDTX-210 12.0 (.472) 8.0 (.315 5.0 ± 0. (.197 ± .008 7.10 DIA ...
Page 3
... Actuating Force • 100 g (black head - 6 mm only) • 160 g (brown head) • 260 g (red head) • 320 g (salmon head - 6 mm only) • 520 g (yellow head - 6 mm only) Packaging Option (SDTX only) • Ammo Pack * Options available: • SDTX-210 • SDTX-244 ...