wire-wound type power inductor revision february 12, 2014 1 / 6 @ socay electronics co., ltd. 2014 specifications are subject to change without notice. please refer to www.socay.com for current information. scwl252010xxxxq series socay electronics co., ltd. www.socay.com u this specification applies low profile power inductors u halogen free, lead free, rohs compliance scwl252010xxxxq series is generic applied in portable dc to dc converter line. u mobile phones u hdds u dscs u pads u lcd, led display, etc. 1 product series 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%; y: 30% 6 packaging: t - embossed plastic tape, 7" reel. 7 soldering : green parts, f - lead-free for whole chip 8 model code symbol 252010 a 2.5 -0.1/+0.2 b 2.0 -0.5/+0.35 c 1.02 max d 0.85 ref e 0.80 ref part numbering f eatures applications scwl 2520 10 2r2 m t f q ( 1 ) ( 2 ) ( 3 ) ( 4 ) ( 5 ) ( 6 ) ( 7) ( 8) construction & dimensions
wire-wound type power inductor revision february 12, 2014 2 / 6 @ socay electronics co., ltd. 2014 specifications are subject to change without notice. please refer to www.socay.com for current information. scwl252010xxxxq series socay electronics co., ltd. www.socay.com i sat (a) i rms (a) part number inductance ( h) tolerance (%) test frequency (hz) dcr ( ? ) 20% typ. max. typ. max. scwl252010r47ytfq 0.47 30% 0.1v / 1m 0.030 2.85 2.57 2.80 2.50 scwl252010r68ytfq 0.68 30% 0.1v / 1m 0.039 2.70 2.45 2.45 2.20 SCWL2520101R0YTFQ 1.0 30% 0.1v / 1m 0.055 2.45 2.05 2.20 1.80 scwl2520101r5ytfq 1.5 30% 0.1v / 1m 0.090 1.80 1.70 1.70 1.55 scwl2520102r2mtfq 2.2 20% 0.1v / 1m 0.125 1.60 1.55 1.55 1.40 scwl2520104r7mtfq 4.7 20% 0.1v / 1m 0.250 1.10 0.95 1.05 0.92 note: 1. isat: based on inductance change (l/l0 Q -30%) @ ambient temp. 25 o c 2. irms: based on temperature rise (t : 40 o c typ.) electrical characteristics current characteristics scwl252010q - r47y - zf scwl252010q - r 68 y - zf scwl252010q-1r5y-zf scwl252010q - 1r0 y - zf
wire-wound type power inductor revision february 12, 2014 3 / 6 @ socay electronics co., ltd. 2014 specifications are subject to change without notice. please refer to www.socay.com for current information. scwl252010xxxxq series socay electronics co., ltd. www.socay.com exposed wire tolerance limit of coating resin part on product side. size of exposed wire occurring to coating resin is specified below. 1. width direction (dimension a): acceptable when a w/2 nonconforming when a>w/2 2. length direction (dimension b): dimension b is not specified. 3. the total area of exposed wire occurring to each sides is not greater than 50% of coating resin area, and is acceptable. no. item material a core ferrite core b coating epoxy with magnetic powder c termination tin (pb-free) d wire enameled copper wire scwl252010q - 2r2m - zf scwl252010q - 4r7m - zf current characteristics a ppearance material lists
wire-wound type power inductor revision february 12, 2014 4 / 6 @ socay electronics co., ltd. 2014 specifications are subject to change without notice. please refer to www.socay.com for current information. scwl252010xxxxq series socay electronics co., ltd. www.socay.com soldering mildly activated rosin fluxes are preferred. socay terminations are suitable for all wave and re-flow soldering systems. if hand soldering cannot be avoided, the preferred technique is the utilization of hot air soldering tools. solder re-flow recommended temperature profiles for re-flow soldering in figure 1. solder iron (figure 2): products attachment with a soldering iron is discouraged due to the inherent process control limitations. in the event that a soldering iron must be employed the following precautions are recommended. u preheat circuit and products to 150 u 355 tip temperature (max) u never contact the ceramic with the iron tip u 1.0mm tip diameter (max) u use a 20 watt soldering iron with tip diam eter of 1.0mm u limit soldering time to 4~5 sec. l (mm) g (mm) h (mm) 2.9 0.8 2.4 soldering and mounting recommended pcb board pattern
wire-wound type power inductor revision february 12, 2014 5 / 6 @ socay electronics co., ltd. 2014 specifications are subject to change without notice. please refer to www.socay.com for current information. scwl252010xxxxq series socay electronics co., ltd. www.socay.com symbol 252010 a0 (mm) 2.85 0.1 b0 (mm) 2.45 0.1 k0 (mm) 1.40 0.1 p (mm) 4.00 0.1 t (mm) 0.23 0.05 tape dimension symbol 7 8 mm a (mm) 8.4 1.0 b (mm) 50 min c (mm) 13 0.8 d (mm) 178 2 reel dimension tearing off force the force for tearing off cover tape is 15 to 80 grams in the arrow direction under the following conditions. room temp. ( o c) room humidity (%) room atm (hpa) tearing speed mm/min 5~35 45~85 860~1060 300 packaging quantity type pcs / reel scwl252010xxxxq 2,000 packaging information
wire-wound type power inductor revision february 12, 2014 6 / 6 @ socay electronics co., ltd. 2014 specifications are subject to change without notice. please refer to www.socay.com for current information. scwl252010xxxxq series socay electronics co., ltd. www.socay.com test item performance test method and remarks operating temperature -55 ~ +125 o c (for products in unopened tape package, less than 40 o c) electrical performance test inductance l agilent-4291, agilent-4287 q agilent-4192, agilent-4285 srf agilent-4192 dc resistance refer to standard electrical characteristic list agilent-4338 rated current base on temp. rise & l/l0a 30% saturation dc current (isat) will cause l0 to drop approximately l(%) mechanical performance test solder heat resistance appearance no damage temperature inductance within 10% of initial value q shall not exceed the specification value rdc within 15% of initial value and shall not exceed the specification value depth: completely cover the termination temperature ( o c) time (s) temperature ramp/immersion and emersion rate number of heat cycles 260 5 (solder temp) 10 1 25mm/s 6mm/s 1 solderability test more than 95% of terminal electrode should be covered with solder after fluxing, component shall be dipped in a melted solder bath at 235 25 o c for 4 1seconds reliability test life test preconditioning: run through ir reflow for 2 times. ipc/jedec j-std-020d classification reflow profiles temperature: 125 2 o c(bead) temperature: 85 2 o c(inductor) applied current: rated current duration: 1000 12hrs measured at room temperature after placing for 24 2 hrs thermal shock preconditioning: run through ir reflow for 2 times. ipc/jedec j-std-020d classification reflow profiles step1: -40 2 o c 30 5min step2: 25 2 o c 0.5min step3: 105 2 o c 30 5min number of cycles: 500 measured at room temperature after placing for 24 2 hrs humidity resistance test preconditioning: run through ir reflow for 2 times. ipc/jedec j-std-020d classification reflow profiles humidity: 85 2 r.h, temperature: 85 o c 2 o c duration: 1000hrs min. with 100% rated current measured at room temperature after placing for 24 2 hrs vibration test appearance: no damage inductance: within 10% of initial value q: shall not exceed the specification value. rdc: within 15% of initial value and shall not exceed the specification value preconditioning: run through ir reflow for 2 times. ipc/jedec j-std-020d classification reflow profiles oscillation frequency: 10~2k~10hz for 20 minutes equipment vibration checker total amplitude: 0.15mm 10% testing time: 12 hours(20 minutes, 12 cycles each of 3 orientations) reliability and test condition
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