wire-wound type power inductor revision february 12, 2014 1 / 5 @ socay electronics co., ltd. 2014 specifications are subject to change without notice. please refer to www.socay.com for current information. scwl252012 series socay electronics co., ltd. www.socay.com u high saturation current realized by material properties and structure design u low dc resistance to achieve high conversion efficiency and low temperature rising u low profile: 2.5mm 2.0mm 1.2mm u magnetically shielded structure to accomplish high resolution in emc protection u halogen free, lead free, rohs compliance scwl series is generic applied in portable dc to dc converter line. u smart phone, pad u dc/dc converter u thin-type power supply module operating temperature range -40 ~ +125 o c storage temperature range -50 ~ +125 o c storage temperature 5 ~ 40 o c relative humidity < 65% taping package storage condition storage time 12 months max 1 series name, wire-wound type power inductor 2 size code: the first two digitals : length(mm), the last two digitals : width(mm) 3 thickness (mm) 4 inductance ( h), eg. 2r2=2.2 h r47=0.47 h 5 inductance tolerance, m: 20% 6 packaging: t - embossed plastic tape, 7" reel. 7 soldering : green parts, f - lead-free for whole chip general technical data part numbering f eatures applications scwl 2520 12 r47 m t f ( 1 ) ( 2 ) ( 3 ) ( 4 ) ( 5 ) ( 6 ) ( 7 )
wire-wound type power inductor revision february 12, 2014 2 / 5 @ socay electronics co., ltd. 2014 specifications are subject to change without notice. please refer to www.socay.com for current information. scwl252012 series socay electronics co., ltd. www.socay.com dc resistance r dc (m ) saturation current isat (a) heat rating current irms (a) part number initial inductance li ( h) @1ma typical maximum typical maximum typical maximum scwl252012r47mtf 0.47 22 28 6 5.5 4.5 4.0 scwl252012r68mtf 0.68 30 38 5.5 5 4.3 3.9 SCWL2520121R0MTF 1.0 44 54 4.5 4 3.1 2.7 scwl2520122r2mtf 2.2 85 102 3 2.7 2.3 2.0 note: 1. all test data is referenced to 26 o c ambient. 2. inductance is measured by lcr meter, test frequency at 1mhz 3. inductance tolerance: 20%. 4. dc resistance is measured by micro-ohm meter. 5. isat means that dc current will cause a 30% inductance reduction form initial value. 6. irms means that dc current will cause coil temperature rising to 40 o c whichever is smaller. electrical characteristics curren t characteristics 0 1 2 3 4 5 6 7 0 0.5 0.4 0.3 0.2 0.1 dc bias (a) scwl 252012r47m tf inductance ( h) 100 80 60 40 20 0 tem p. r is ing ( o c ) inductance ( h) temp. rising ( o c) 0 0.5 1 1.5 2 2.5 3 3.5 4 4.5 5 5.5 6 6.5 7 0.1 0.7 0.5 0.3 dc bias (a) scwl 2520 12r68m tf inductance ( h) 100 80 60 40 20 0 tem p. r is ing ( o c ) inductance ( h) temp. rising ( o c) 0 0.5 1 1.5 2 2.5 3 3.5 4 4.5 5 0 1.2 0.9 0.6 0.3 dc bias (a) scwl 2520121r0m tf inductance ( h) 100 80 60 40 20 0 tem p. r is ing ( o c ) inductance ( h) temp. rising ( o c) 0 0.5 1 1.5 2 2.5 3 3.5 4 0 2.5 2.0 1.5 1.0 0.5 dc bias (a) scwl 2520122r2m tf inductance ( h) 100 80 60 40 20 0 tem p. r is ing ( o c ) inductance ( h) temp. rising ( o c )
wire-wound type power inductor revision february 12, 2014 3 / 5 @ socay electronics co., ltd. 2014 specifications are subject to change without notice. please refer to www.socay.com for current information. scwl252012 series socay electronics co., ltd. www.socay.com reflow condition pb free assembly -temperature min (t s(min) ) +150 c -temperature max (t s(max) ) +200 c pre heat -time (min to max) (t s ) 60 -180 seconds average ramp up rate ( liquidus temp t l ) to peak 3 c/second max t s(max) to t l - ramp-up rate 3 c/second max - temperature (t l ) (liquidus) +217 c reflow - time (min to max) (t l ) 60 -150 seconds peak temperature (t p ) 260 +0/-5 c time within 5 c of actual peak temperature (t p ) 20-40 seconds ramp-down rate 6 c/second max time 25 c to peak temperature (t p ) 8 minutes max note that this product will be easily damaged by rapid heating, rapid cooling or local heating. do not give heat shock over 100 c in the process of soldering. we recommend to take preheating and gradual cooling soldering gun procedure note the follows, in case of using solder gun for replacement. 1) the tip temperature must be less than 280 for the period within 3 seconds by using soldering gun under 30w 2) the soldering gun tip shall not touch this product directly. soldering volume note that excess of soldering volume will easily get crack the body of this product. core material: iron end termination: ni / sn unit: mm l w t e do not exceed to bend the board after soldering this product extremely. (reference examples) l mounting place must be as far as possible from the position, which is close to the break line of board, or on the line of large holes of board. l do not bend extremely the board, in mounting another component. if necessary, use back-up pin (support pin) to prevent from bending extremely. l do not break the board by hand. we recommend to use the machine or the jig to break it. 2.5 0.2 2.0 0.2 1.2 max 0.6 0.2 a b c 1.2 2.8 2.0 unit: mm soldering parameters precaution for s oldering ramp-down preheat critical zone t l to t p time to peak temperature (t 25 to peak) t p t l t s(max) t s(min) 25 temperature ramp-up time construction & dimensions p recaution for h andling of s ubstrate recommended pad layout l t e e w
wire-wound type power inductor revision february 12, 2014 4 / 5 @ socay electronics co., ltd. 2014 specifications are subject to change without notice. please refer to www.socay.com for current information. scwl252012 series socay electronics co., ltd. www.socay.com symbol 252012 w 8.00 0.3 e 1.75 0.10 f 3.50 0.05 d 1.55 0.05 p 4.00 0.10 p0 4.00 0.10 p2 2.00 0.05 a0 2.50 0.10 b0 3.00 0.10 k0 1.60 0.10 t 0.25 0.05 part size (eia size) packaging option quantity 2520 (1008) 7 reel 3,000 unit: mm the contents of a box 252010 (1008): 6 reels / inner box tape specifications direction of feed reel specifications & packaging
wire-wound type power inductor revision february 12, 2014 5 / 5 @ socay electronics co., ltd. 2014 specifications are subject to change without notice. please refer to www.socay.com for current information. scwl252012 series socay electronics co., ltd. www.socay.com test item test condition criteria resistance to solder heat 1. solder temperature : 260 5 2. flux : rosin 3. dip time : 10 1 sec 1. more than 95 % of terminal electrode should be covered with new solder 2. no mechanical damage 3. induction value should be within 20 % of the initial value adhesive test 1. reflow temperature : 245 it shall be soldered on the substrate applying direction parallel to the substrate 2. apply force(f) : 5 n 3. test time : 10 sec 1. no mechanical damage 2. soldering the products on pcb after the pulling test force > 5 n temperature cycle 1. temperature : -50 ~ +125 for 30 minutes each 2. cycle : 500 cycles 3. measurement : at ambient temperature 24 hours after test completion 1. no mechanical damage 2. induction value should be within 20 % of the initial value dry heat test 1. temperature : 85 5 2. test time : 500 hours 3. apply current : full rated current 4. measurement : at ambient temperature 24 hours after test completion 1. no mechanical damage 2. induction value should be within 20 % of the initial value humidity test 1. temperature : 60 2 2. humidity : 90 ~ 95 % rh 3. apply current : full rated current 4. test time : 500 hours 5. measurement : at ambient temperature 24 hours after test completion 1. no mechanical damage 2. induction value should be within 20 % of the initial value reliability and test condition
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