*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.
SDM Series Surface Mount DIP Switch
Features
■Double contacts
■Low contact resistance
■Self-clean on contact area
■Vapor phase solderable, IR-reflow solderable
■Terminal plating by gold gives excellent
results when soldering
■RoHS compliant*
Electrical Characteristics
Electrical Life ............2,000 operations min.
per switch, 24 VDC, 25 mA
Non-Switching Rating ......100 mA, 50 VDC
Switching Rating ................25 mA, 24 VDC
Contact Resistance (@ current 100mA)
........................50 milliohms max. at initial
100 milliohms max. after life test
Insulation Resistance
........100 megohms min. at 500 ±15 VDC
Dielectric Strength ............500 VDC/minute
Capacitance ..................5 pF max. between
adjacent closed switch
Circuit ....................Single pole single throw
Environmental Characteristics
Mechanical Life..2,000 operations per switch
Operation Force ......................1000 gf max.
Stroke ..............................................1.0 mm
Operating Temp. Range....-20 °C to +70 °C
Storage Temperature ........-40 °C to +85 °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 ..........50 G (peak value), 11 msec
Direction & Times....................6 sides and
3 times in each direction.
High reliability
Physical Characteristics
Base and Cover Materials
..UL94V-0 PPS plus glass fiber reinforced
Color ................................................Black
Actuator Materials ..............................Nylon
plus glass fiber reinforced
Color ................................................White
Contact Materials ....................Alloy copper
Terminal Materials ..............................Brass
Contact Plating Materials ....3 micro inches
gold plating over 40 micro inches nickel
Terminal Plating Materials....................Gold
Soldering Process ............Vapor phase and
IR-reflow soldering can be applied
Standard Packaging
......IC tubes/all poles in the “off” position
How to Order
SDM R - 2 - T R
Model
Actuator
• X = Raised Actuator
• R = Recessed Actuator
Number of Positions
• 1 = 1 Position • 7 = 7 Positions
• 2 = 2 Positions • 8 = 8 Positions
• 3 = 3 Positions • 9 = 9 Positions
• 4 = 4 Positions • 10 = 10 Positions
• 5 = 5 Positions • 12 = 12 Positions
• 6 = 6 Positions
Seal
• X = Standard (Not Sealed)
• T = Top Tape Sealed (“R” Actuator only)
Packaging Option
(Top Sealed, Recessed only)
• R = Tape and Reel Packaging
(900 pcs./reel)
B±0.10=2.54X(P-1)
(B±.004=.10X(P-1))
SDM Series
A + 0.2 / - 0
(A + .008/-0)
0.50
(.020)
2.0
(.079)
6.20 + 0.2 / -0
(.244 = .008/-0)
B
1.74
(.069)
2.54
(.100)
TYP.
3.0 + 0.10 / -0
(.118 + .004/-0)
0.70
(.028) MIN.
7.62 ± 0.25
(.300 ± .010)
9.80 ± 0.3
(.386 ± .012)
0.7 ± 0.2
(.028 ± .088)
0°~4°
1.0
(.039)
0.70
(.028)
RECOMMENDED PCB LAYOUT
SDMR SERIES
SDMX SERIES
7.40
(.291)
10.4
(.409)
2.54
(.100)
TYP.
1.1
(.043)
SCHEMATIC (TYP.)
1,2,3,4,5,6,7,8,9,10 POSITIONS AVAILABLE
MODEL NO. POSITIONS DIM. A DIM. B
SDM-12 12 31.42 27.94
SDM-10 10 26.34 22.86
SDM-8 8 21.26 17.78
SDM-6 6 16.18 12.70
SDM-4 4 11.10 7.62
SDM-2 2 6.02 2.54
SCHEMATIC (TYP.)
1,2,3,4,5,6,7,8,9,10,12 POSITIONS AVAILABLE
2.00 ± 0.25
(.079 ± .010) DIA.
DIA.
1.55 ± 0.05
(.061 ± .002)
16.00 ± 0.1
(.630 ± .004)
4.00 ± 0.1
(.157 ± .004)
2.00 ± 0.15
(.079 ± .006)
POLE TAPE SIZE (W)
2,3 16 mm
4,5,6 24 mm
7,8 32 mm
9,10,12 44 mm
Packaging SpecificationsProduct Dimensions
DIMENSIONS: MM
(IN)
Reflow Soldering Profile
Temperature (°C)
Time (Seconds)
275
30-40 Sec.
120 °C
225
175
125
75
250 20 40 60 80 100 120 140 160 180 200
80-90 Sec.
10-15
Sec.
35-60
Sec.
180 °C
240 °C
REV. 02/06
*RoHS COMPLIANT
The SDM Series is currently available,
although not recommended for new
designs.
