p725.b (9/14) 1 pulseelectronics.com smt power inductors power beads - pa3784.xxxhl series pulse ja ck e l e c t r o n i c s current rating: over 94 apk inductance range: 120nh to 180nh height: 8.0 mm max footprint: 10.0mm x 8.0mm max halogen free electrical specifications @ 25c operating temperature - 40c to +130c 7 notes: 1. inductance measured at 100khz, 100mvrms. 2. inductance at irated is the value of the inductance at 25c at the listed rated current. 3. the rated current as listed is either the saturation current (25c or 100c) or the heating current depending on which value is lower. 4. the nominal dcr is measured from point a to point b , as shown below on the mechanical drawing. 5. the saturation current is the typical current which causes the inductance to drop by 20% at the stated ambient temperatures (25c, 100c and 125c). this current is determined by placing the component in the specified ambi - ent environment and applying a short duration pulse current (to eliminate self-heating effects) to the component. 6. the heating current is the dc current which causes the part temperature to increase by approximately 40c when used in a typical application. 7. in high volt*time applications, additional heating in the component can occur due to core losses in the inductor which may neccessitate derating the current in order to limit the temperature rise of the component. to deter - mine the approximate total losses (or temperature rise) for a given application, the coreloss and temperature rise curves can be used. 8. optional tape & reel packaging can be ordered by adding a t suffix to the part number (i.e. pa3784.121hl becomes pa3784.121hlt). pulse complies to industry standard tape and reel specification eia481. the tape and reel for this product has a width (w=24mm), pitch (po=16.0mm) and depth (ko=8.2mm). 9. the temperature of the component (ambient plus temperature rise) must be within the stated operating tem - perature range. mechanical schematics dimensions: mm unless otherwise specified, all tolerances are 0,25 weight ........................ 2.75 grams tape & reel ...................... 450/reel pa3784.xxxhl part number inductance 1 @ 0a dc (nh +/- 10%) inductance 2 @irated (nh typ) irated 3 (adc) dcr 4 ( m nominal ) saturation current 5 (a typ) heating current 6 (a typ) 25c 100c pa3784.121hl 120 120 84 0.18 +/- 5% 94 84 70 pa3784.151hl 150 150 67 83 67 pa3784.181hl 180 165 55 67 55
p725.b (9/14) 2 pulseelectronics.com smt power inductors power beads - pa3784.xxxhl series pulse ja ck e l e c t r o n i c s 0 20 40 60 80 100 120 140 160 180 200 01 02 03 04 05 06 07 08 09 0 100 i nduc ta nc e (n h) cu rren t (a ) pa 3784. xxxhl, lv si , 25c . 121h l_25c .1 51hl _ 25c .1 81h l_25 c 0 20 40 60 80 100 120 140 160 180 200 01 02 03 04 05 06 07 08 09 0 100 i nduc ta nc e (n h) cu rre nt (a ) pa 3784 .xxxh l, lv si , 100c . 121 hl _ 100 c .1 51h l_100c . 181h l_100c
p725.b (9/14) 3 pulseelectronics.com smt power inductors power beads - pa3784.xxxhl series pulse ja ck e l e c t r o n i c s 0. 0 0. 1 0. 2 0. 3 0. 4 0. 5 0. 6 0. 7 0. 8 0. 9 1. 0 1. 1 0 200 4006 00 800 1000 1200 1400 1 600 1800 2000 co re loss (w ) b wh ere b = 0.36 * l(nh ) * i pa 3784. xxxh l co reloss (w ) 200 khz 500 khz 600 khz 700 khz 400 khz 300 khz 0 10 20 30 40 50 00 .2 0. 40 .6 0. 81 te mp ri se above am bi en t (c ) po we r (w ) tota l po we r di ssi pa ti on (w ) = co pper loss + co re los s co pper loss = irms ^2 * rd c( mo hm s) / 1000 co re loss = (fr om ta bl e) pa 3784. xxxh l te mp ri se vs powe r di ssi pati on for more information puse ordwide eaduarters ord trade rie san ieo s te fa puse uroe eeinstrasse errener erman te fa puse ina eaduarters senen cadem of erosace tecnoo d t einan oad itec one ansan istrict senen p ina te fa puse ort ina oom suer cean finance tr an n oad est sanai ina te fa puse sout sia oo sen oad pm industria d sinaore te fa puse ort sia f o onuan oad oni it taouan ount taiwan te fa puse fa f performance warrant of roducts oered on tis data seet is imited to te arameters secied ata is suect to cane witout notice ter rand and roduct names mentioned erein ma e trademars or reistered trademars of teir resectie owners orit puse ectronics inc rits resered
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