1 pled open led protectors revision: may 23, 2013 ?2013 littelfuse, inc. specifcations are subject to change without notice. please refer to www.littelfuse.com for current information. pledxsw series pledxsw series description pledxsw series open led protectors provide a switching electronic shunt path when an led in an led string fails as an open circuit. this ensures that the remaining string of leds will continue to function if a single led does not. pledxsw series devices were designed to enable higher reliability in indoor led lighting applications such as advertisement lighting and other applications. additionally, they are molded from white material to make them less visible in the led fxture and the white molding also refects more light to improve overall light engine effciency. compatible with one, two and three watt leds that have a nominal 3v forward characteristic, pledxsw series devices are available in smb surface mount package. the do-214aa (smb) low profle package is ideal for dense board applications. electrical characteristics (all parameters are measured at t=25c unless otherwise noted) part number marking v br breakdown v drm breakdown i h i s i t @v t v t @ i t = 1 amp critical rate of rise dv/dt volts volts mamps mamps amps volts volts min max min min max max max max pled6sw pl6 6 16 6 5 100 1. 0 1. 2 250v/s pled9sw pl9 9 18 9 PLED13SW pl13 13 26 13 pled18sw pl18 18 33 18 features & benefts ? fast switching ? automatically resets after pow er cycle ? low profle, small foot print st andard do-214aa package ? compatible with industrial lighting environments ? compatible with pwm frequencies up to 30 khz ? rohs compliant and halogen-free agency approvals agency agency file number e133083 schematic symbol control circuit rohs pledxsw series - white body
2 pled open led protectors revision: may 23, 2013 ?2013 littelfuse, inc. specifcations are subject to change without notice. please refer to www.littelfuse.com for current information. pledxsw series pledxsw series package symbol parameter value unit t j operating junction temperature range -40 to +150 c t s storage temperature range -65 to +150 c r ja thermal resistance: junction to ambient do-214aa: 90 1 do-214aa: 40 2 c/w thermal considerations i h i t i s v drm v t +v -v +i -i v br v-i characteristics 0.4 -40 -20 0.6 0.8 1.0 1.2 1.4 1.6 1.8 2.0 case temperature (t c ) ? ?c fo oitar i h i h t( c c? 52 =) 25 ?c 0 20 40 60 80 100 120 140 160 on/off switch pwm led driver v bat 12 vdc + - 2.0 , 1/4 w 11 0 k , 1/4 w q2 2n2222 q1 pled control circuit -8 -40 -20 -6 -4 0 2 4 6 8 10 12 14 junction temperature (t j ) ? ?c re p fo tne cv br ? egnah c% 25 ?c 0 20 40 60 80 100 120 140 160 v br vs. junction temperature normalized dc holding current vs. case temperature led interference test circuit notes: 1) standard fr-4 pcb with copper pads (recommended size) 2) aluminum pcb thickness: 1.6mm grade: 1-2 w/mk t hermal conductivity trace thickness: 2 oz insulation layer thickness: 21 5 um solder pad dimensions: 2.0mm x 2.8mm (recommended size) do-214aa in white
3 pled open led protectors revision: may 23, 2013 ?2013 littelfuse, inc. specifcations are subject to change without notice. please refer to www.littelfuse.com for current information. pledxsw series pledxsw series 6 leds in series 50% duty cycle 10khz 5 leds and 1 pled in series 50% duty cycle 10khz pled in the off-state 10khz pled device zeners and then turns fully on 10khz channel 1: current through leds (318 ma) channel 2: voltage across pled device (4.5 v) channel 1: current through leds (346 ma) and pled device once it is fully turned on 2.5 sec later channel 2: voltage across pled device (21.3 v before pled crowbars with 2 v drop) note: these two graphs sho w the current magnitude through the led string with and without the pled included. there is no noticeable effect on the led current magnitude when the pled is included in the circuit as compared to the led current magnitude when the pled is not in the circuit. (the conversion factor for the test measurement in the graphs above is 10ma/mv for the pearson coil measurement, therefore, the current magnitude in the frst fgure is 10ma*8.9 = 89ma, while the second fgure is 91ma.)
4 pled open led protectors revision: may 23, 2013 ?2013 littelfuse, inc. specifcations are subject to change without notice. please refer to www.littelfuse.com for current information. pledxsw series pledxsw series soldering parameters refow condition pb C free assembly pre heat - temperature min (t s(min) ) 150c - temperature max (t s(max) ) 200c - time (min to max) (t s ) 60 C 180 secs average ramp up rate (liquidus temp (t l ) to peak 3c/second max t s(max) to t l - ramp-up rate 3c/second max refow - temperature (t l ) (liquidus) 217c - temperature (t l ) 60 C 150 seconds peak temperature (t p ) 260 +0/-5 c time within 5c of actual peak temperature (t p ) 30 seconds ramp-down rate 6c/second max time 25c to peak temperature (t p ) 8 minutes max do not exceed 260c physical specifcations environmental specifcations high temperature voltage blocking mil-std-750: method 1040, condition a 80% min v drm (vac-peak), 150c, 504 hours temperature cycling mil-std-750: method 1051 -65c to 150c, 15-minute dwell, 100 cycles biased temperature & humidity eia/jedec: jesd22-a101 80%v drm , 85c, 85%rh, 1008 hours high temperature storage mil-std-750: method 1031 150c, 1008 hours low temperature storage -65c, 1008 hours thermal shock mil-std-750: method 1056 0c to 100c, 5-minute dwell, 10-second transfer, 10 cycles resistance to solder heat mil-std-750: method 2031 260c, 10 seconds terminal material copper alloy terminal finish 100% matte tin plated body material ul recognized epoxy meeting fammability classifcation 94v-0 part marking system plx xxxxx do-214aa part numbering system packaging package description packaging quantity industry standard s do-214aa 2500 eia-481-1 pled x s type led protector v 6 volts 9 volts 13 volts 18 volts package type s: do-214aa drm w white body
5 pled open led protectors revision: may 23, 2013 ?2013 littelfuse, inc. specifcations are subject to change without notice. please refer to www.littelfuse.com for current information. pledxsw series pledxsw series dimensions - do-214 aa package b d a c h g k f case temperature measuring point 0.079" (2.0mm) 0.079" (2.0mm) 0.110" (2.8mm) e recommended solder pad layout (reference only) dimensions inches millimeters min max min max a 0.130 0.156 3.30 3.95 b 0.201 0.220 5.10 5.60 c 0.077 0.087 1.95 2.20 d 0.159 0.181 4.05 4.60 e 0.030 0.063 0.75 1.60 f 0.075 0.096 1.90 2.45 g 0.002 0.008 0.05 0.20 h 0.077 0.104 1.95 2.65 k 0.006 0.016 0.15 0.41 meets all eia-481-1 standards 0.472 (12.0) 0.36 (9.2) 0.315 (8.0) 0.157 (4.0) 0.49 (12.4) 0.512 (13.0) arbor hole dia . 12.99 (330.0) dimensions are in inches (and millimeters). direction of feed 0.059 dia (1.5) cover tape do-214aa embossed carrier reel pack (rp)
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