The SDM Series is currently available,
although not recommended for new
designs.
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*
SDM Series Surface Mount DIP Switch
Electrical Characteristics
Product Dimensions
Packaging Specifications
2.00 ± 0.25
(.079 ± .010)
Electrical Life ............2,000 operations min.
per switch, 24 VDC, 25 mA
DIA.
SDM Series
1.55 ± 0.05
(.061 ± .002)
DIA.
A + 0.2 / - 0
(A + .008/-0)
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
2.0
(.079)
2.00 ± 0.15
(.079 ± .006)
Insulation Resistance
........100 megohms min. at 500 15 VDC
Dielectric Strength ............500 VDC/minute
Capacitance ..................5 pF max. between
adjacent closed switch
4.00 ± 0.1
(.157 ± .004)
6.20 + 0.2 / -0
(.244 = .008/-0)
0.50
(.020)
Circuit ....................Single pole single throw
3.0 + 0.10 / -0
(.118 + .004/-0)
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
2.54
(.100)
TYP.
16.00 ± 0.1
(.630 ± .004)
1.74
(.069)
0.70
(.028)
MIN.
B
POLE
2,3
4,5,6
7,8
TAPE SIZE (W)
9.80 ± 0.3
(.386 ± .012)
0.70
(.028)
16 mm
24 mm
32 mm
44 mm
1.0
(.039)
7.62 ± 0.25
(.300 ± .010)
0°~4°
9,10,12
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.
0.7 ± 0.2
(.028 ± .088)
SDMX SERIES
How to Order
SDMR SERIES
SDM R - 2 - T R
Model
RECOMMENDED PCB LAYOUT
B±0.10=2.54X(P-1)
(B±.004=.10X(P-1))
Actuator
• X = Raised Actuator
• R = Recessed Actuator
High reliability
Number of Positions
Physical Characteristics
2.54
(.100)
TYP.
10.4
(.409)
• 1 = 1 Position
• 2 = 2 Positions
• 3 = 3 Positions
• 4 = 4 Positions
• 5 = 5 Positions
• 6 = 6 Positions
•
•
•
7 = 7 Positions
8 = 8 Positions
9 = 9 Positions
7.40
(.291)
1.1
(.043)
Base and Cover Materials
• 10 = 10 Positions
• 12 = 12 Positions
..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
SCHEMATIC (TYP.)
SCHEMATIC (TYP.)
Seal
1,2,3,4,5,6,7,8,9,10,12 POSITIONS AVAILABLE
• X = Standard (Not Sealed)
• T = Top Tape Sealed (“R” Actuator only)
1,2,3,4,5,6,7,8,9,10 POSITIONS AVAILABLE
Packaging Option
(Top Sealed, Recessed only)
• R = Tape and Reel Packaging
(900 pcs./reel)
MODEL NO.
SDM-12
SDM-10
SDM-8
POSITIONS
DIM. A DIM. B
31.42 27.94
26.34 22.86
21.26 17.78
16.18 12.70
Reflow Soldering Profile
12
10
8
275
Standard Packaging
......IC tubes/all poles in the “off” position
240 °C
SDM-6
6
225
SDM-4
SDM-2
4
2
11.10
6.02
7.62
2.54
180 °C
175
10-15
Sec.
125
75
120 °C
80-90 Sec.
MM
(IN)
DIMENSIONS:
35-60
Sec.
30-40 Sec.
25
0
20 40 60 80 100 120 140 160 180 200
REV. 02/06
Time (Seconds)
*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.