25 DFE252012R inductance range: 1.0~4.7 ? h (unit: mm) (unit: mm) features L ? miniature size: 2520 footprint (2.5mm2.0mm) and low profile(1.2mm max. height) ? the use of magnetic iron powder ensure capability fo r large current. ? the use of flat wire for low dc resistance. ? magnetically shielded, low audible core noise. ? reflow solderable. ? operating temperature : -40 +85c ? halogen free, rohs compliant. ? ?? (2.5 2.0 ?? 1.2mm max.) ? ?????? ? ?????? ? ]??Q ? ?? ? ??? -40 +85c ? ???` rohs ? toko standard part numbers | ???E type DFE252012R (quantity/reel; 3,000 pcs) |? S? y? ?? S toko part number inductance l( ? h) tolerance (%) test frequency (mhz) dc resistance (m ? ) max. (typ.) rated dc current (a) max. (typ.) l/l=30% t=40? c DFE252012R-h-1r0m 1.0 ?20 1 49 (38) 3.4 (4.3) 3.1 (3.6) DFE252012R-h-1r5m 1.5 ?20 1 65 (53) 2.8 (3.5) 2.5 (2.9) DFE252012R-h-2r2m 2.2 ?20 1 90 (75) 2.4 (3.0) 2.0 (2.4) DFE252012R-h-4r7m 4.7 ?20 1 216 (180) 1.7 (2.1) 1.4 (1.6) (1) inductance is measured with a lcr meter 4284a ( agilent technologies ) or equivalent. test frequency at 1mhz (2) dc resistance is measured with 34420a (agilent technologies) or 3541(hioki). (reference ambient temperature 20c) (3) maximum allowable dc current is that which causes a 30% inductance reduction from the initial value, coil temperature to rise by 40 ? c whichever is smaller. (reference ambient temperature 20c) (1) ?? lcr ` 4284a ( agilent technologies ) ? ???y?y? 1mhz (2) ???y 34420a agilent technologies ? 3541 hioki ???y??? 20c (3) S???r??? ? 30 p?????? ?? 40c ?N?? ?? 20c ??? recommended patterns ?X?` metal alloy inductors ??? ? low dcr type ??
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