260 www.meder.com meder electronic reed sensors for smd mounting description applications mk17 series mk17 are magnetically operated reed proximity switches for smd mounting. ? lead design 1: flat, straight leads for pcb slot mounting. ? lead design 2: flat, bent smd leads. ? lead design 3: j-lead. the sensors are supplied taped & reeled according to iec 286/part 3 suitable for auto-placement. the special features of this series are the small dimensions of only 12.5 x 2.1 x 2.1mm and the simple internal structure. electronic pcbs where all components are surface mounted telecommunication applications hook switch in mobile and hard-wired phones switching element in microphones ? ? ? dimensions all dimensions in mm [inch] features two operate sensitivities available tape and reel available excellent for low power operations no external power required for sensor operation ul approved ? ? ? ? ? recommended pad layout
261 www.meder.com meder electronic part number example mk17 - b - 1 b is the magnetic sensitivity 1 is the lead design order information series magnetic sensitivity lead design mk17 - x - x options b, c, d, e 1, 2, 3 sensitivity class pull in at range b 10 - 15 c 15 - 20 d 20 - 25 e 25 - 30 mk17 series tape & reel reed sensors for smd mounting magnetic sensitivity
262 www.meder.com meder electronic reed sensors for smd mounting mk17 series soldering information reflow soldering conditions according jedec norm j-std-020c ramp up : max. 6k/s ramp down: max. 8/k s 120 s 40 s 120-180 s 183 o c 260 o c 125 o c
263 www.meder.com meder electronic contact data mk17 series reed sensors for smd mounting all data at 20 c contact form form a contact ratings conditions min. typ. max. units switching power any dc combination of v & a not to exceed their individual max.s 10 w switching voltage dc or peak ac 100 v switching current dc or peak ac 0.5 a carry current dc or peak ac 0.5 a static contact resistance w/ 0.5 v & 10 ma 200 m dynamic contact resistance measured w/ 0.5 v & 50 ma , 1.5 ms after closure 250 m insulation resistance across contacts 100 volts applied 10 9 breakdown voltage across contact voltage applied for 60 sec. min. 210 vdc operate time incl. bounce measured w/ 100 % overdrive 0.6 ms release time measured w/ no coil suppression 0.1 ms capacitance at 10 khz cross contact 0.2 pf contact operation * must operate condition steady state feld 10 30 at must release condition steady state feld 4 18 at environmental data shock resistance 1/2 sinus wave duration 11 ms 30 g vibration resistance from 10 - 2000 hz 20 g ambient temperature 10c/ minute max. allowable -40 130 o c stock temperature 10c/ minute max. allowable -50 130 o c soldering temperature 5 sec. dwell 260 o c please note: the indicated electrical data are maximum values and can vary downwards when using a more sensitive switch. * these ranges refer to the uncut / unmodifed reed switches described in our reed switch section. consult factory if more detail is required.
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