137 switches sdtm series ?smd tact switch features available sharp click feel with a positive tactile feedback ultra-miniature and lightweight structure suitable for high density mounting very economical with high reliability insert molding in the contact with special treatment prevents flux buildup during soldering and permits autodipping rohs compliant ? electrical characteristics electrical life ....................50,000 cycles min. for 260 g 500,000 cycles min. for 100 g, 160 g rating ................................dc 12 v, 50 ma contact resistance.........100 mohms max. insulation resistance ......100 mohms min., dc 500 v min. dielectric strength...ac 250 v for 1 minute contact arrangement.......1 pole 1 position environmental characteristics operation force ..........100 g, 160 g, 260 g tolerance........................................ ?0 g stop strength......place the switch vertical, a static load of 3 kg shall be applied in the direction of actuator operation for a period of 15 seconds stroke...........0.25 mm (+0.2 mm, -0.1 mm) temperature range..........-25 ? to +70 ? vibration test ......................mil-std-202f, method 201a frequency .............10-50-10 hz/1 minute directions........................x,y,z 3 mutually perpendicular directions time.....................2 hours each direction, high reliability shock test ..........................mil-std-202f, method 213a, condition a gravity..........50 g (peak value), 11 msec. directions/time.........6 sides and 3 times in each direction physical characteristics cover materials..................steel, tin plated base materials ...........thermoplastic nylon fg 101, ul94v-0 actuator materials ................thermoplastic nylon ul94v-0 color ............................black, brown, red contact disc. materials ...............phosphor bronze with silver cladding terminal materials.............brass with silver cladding product dimensions sdtm-610/620/630/650/660 4.30 (.169) 6.20 (.244) 3.50 (.138) dia. 3.50 (.138) 0.50 (.020) max. 0 -4 0.70 (.028) 0.200 0.10 (.008 .004) 9.0 0.2 (.354 .008) c l c l c l h 0.20 (h .008) 4.50 0.20 (.177 .008) t 1 t 2 t 4 t 3 sdtm-644/648 4.30 (.169) 6.20 (.244) sdtm-644: 0.70 (.028) c l c l 2.4 (.095) dia. 3.50 (.138) 0.50 (.020) max. 0 -4 0.200 0.10 (.008 .004) 9.0 0.2 (.354 .008) c l 7.30 (.287) 4.50 0.20 (.177 .008) sdtm-648: 2.8 (.110) dia. t 1 t 2 t 4 t 3 9.50 (.374) 4.50 (.177) 1.30 (.051) recommended pcb layout 6.40 (.252) t 1 t 2 t 4 t 3 dimensions: mm/(inches) tolerances: .2/(.008) except where noted how to order sdt m - 6 10 - k tr model product code m = smd body size 6 = 6 mm height 10 = 4.3 mm 20 = 5.0 mm 30 = 7.0 mm 44 = 7.3 mm (square head) 48 = 7.3 mm (square head) 50 = 9.5 mm 60 = 13 mm actuating force k = 100 g (black) n = 160 g (brown) r = 260 g (red) packaging option tr = embossed tape* 610 = 1000 pcs. 620 = 900 pcs. 630, 644, 648 = 500 pcs. 650 = 380 pcs. __ = tube all models = 77 pcs. *not applicable to model 660. specifications are subject to change without notice. ? rohs directive 2002/95/ec jan 27 2003 including annex. customers should verify actual device performance in their specific applications. rev 09/04 t 1 t 2 t 4 t 3 circuit diagram
138 switches sdtm series ? packaging specifications packaging specifications sdtm-610/620/630/644/648/650(tr) 16.00 +0.30/-0.10 (.630 + .012/-.004) 12.00 0.10 (.472 .004) 2.0 0.10 (.079 .004) 4.00 0.10 (.157 .004) 1.50 +0.25/-0.00 (.059 +.010/-0.00) 1.50 + 0.10/-0.00 (.059 + .004/-0.00) dia. dia. 6.5 (.256) 1.8 (.071) 1.8 (.071) 2.6 (.102) 0.5 (.020) r 1.0 (.039) r a 9.4 (.370) 7.5 (.295) 6.0 0.5 (.236 .020) 10.6 0.1 (.417 .004) sdtm-610/620/630/644/648/650/660(tube) dimensions: mm/(inches) tolerances: .2/(.008) except where noted model number dimension a sdtm-630, 644, 648 10.40 (.409) sdtm-650, 660 15.9 ?.1 (.626 ?004) sdtm-610, 620 5.5 (.217) reflow soldering profile temperature ( c) time (seconds) 275 30-40 sec. 120 c 225 175 125 75 25 0 20 40 60 80 100 120 140 160 180 200 80-90 sec. 10-15 sec. 35-60 sec. 180 c 240 c specifications are subject to change without notice. customers should verify actual device performance in their specific applications.
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