specification for approval document : sig4018l-xxx revision : a4 page : 1 of 11 sig4018l-xxx sealed choke coil 1. features low profile 3.8mm x 3.8mm x 1.8mm low coil resistance with large currents. high magnetic shield construction should actualize high resolution for emc protection. 100% lead (pb) free meet rohs standard 2. application cellular phones, lcd displays, hdds, dvcs, dscs, pd as etc.. 3. type designation sig 4018 l - xxx (1) (2) (3) (4) where (1) series no : (2) size : 4018 = 3.8mm x 3.8mm x 1.8mm (3) model characteristic : l: low resistance , h: high current (4) inductance value : 4r7 = 4.7 m h 4. outline dimensions note this graph is only regard to dimensions spec. for o uter appearance, please refer to actual product. code dimensions (mm) l 3.8 0.2* w 3.8 0.2* t 1.8 max. * p 1.0 0.2 * dimensions are of the case not including the termination. for maximum overall dimensions including the termination, add 0.1mm. l w p t p
specification for approval document : sig4018l-xxx revision : a4 page : 2 of 11 b c a 5. recommend land pattern dimensions the customer shall determine the land dimensions sh own above after confirming and safety. 6. specifications r dc ( m w ) heat rating current dc amps. idc ( a ) saturation current dc amps. isat ( a ) part number l0 inductance ( m h ) @ (0a) typical maximum typical maximum typical maximum sig4018l-r56 0.56 17 22 5.4 4.86 5.5 4.95 sig4018l-1r0 1.0 20 25 3.8 3.42 3.8 3.42 sig4018l-1r2 1.2 25 30 3.6 3.24 3.6 3.24 sig4018l-1r5 1.5 33 40 3.2 2.88 3.5 3.15 sig4018l-1r8 1.8 34 41 3.1 2.79 3.1 2.79 sig4018l-2r2 2.2 35 45 3.0 2.70 3.0 2.70 sig4018l-3r3 3.3 45 56 2.7 2.43 2.4 2.16 sig4018l-4r7 4.7 70 90 2.2 1.98 2.0 1.80 sig4018l-6r8 6.8 90 115 1.9 1.71 1.7 1.53 sig4018l-8r2 8.2 105 132 1.5 1.35 1.6 1.44 sig4018l-100 10.0 135 170 1.4 1.26 1.55 1.40 sig4018l-150 15.0 185 222 1.25 1.12 1.0 0.90 sig4018l-220 22.0 250 315 1.2 1.08 0.83 0.74 sig4018l-330 33.0 405 486 0.9 0.81 0.68 0.61 SIG4018L-470 47.0 495 594 0.8 0.72 0.56 0.50 sig4018l-680 68.0 885 1,062 0.58 0.52 0.48 0.43 sig4018l-101 100.0 1,545 1,854 0.42 0.37 0.45 0.40 sig4018l-221 220.0 3,150 3,780 0.30 0.27 0.33 0.30 sig4018l-331 330.0 4,200 5,040 0.27 0.24 0.25 0.22 * if you require another part number please contact w ith us. ** inductance tolerance 20% note 1. all test data is referenced to 25 ambient. note 2. idc : dc current (a) that will cause an approximate t of 40 note 3. isat : dc current (a) that will cause lo to drop ap proximately 30% note 4. operating temperature range -55 to + 125 note 5. the part temperature (ambient + temp rise ) should not exceed 125 under worse case operating conditions. circuit design , component placement, p wb trace size and thickness, airflow and other cooling provision all affect the part temperature. part temperature should be verified in the end application. note 6. the rated current as listed is either the saturatio n current or the heating current depending on which value is lower. a 3.8 b 1.8 c 3.8 unit : mm
specification for approval document : sig4018l-xxx revision : a4 page : 3 of 11 6-1 current characteristic current characteristic sig4018l-r56 0.00 0.12 0.24 0.36 0.48 0.60 0.72 0.0 1.0 2.0 3.0 4.0 5.0 6.0 7.0 8.0 dc bias(amps) inductance( h) 0 20 40 60 80 100 temp rise( ) inductance( h) temp.rise( ) sig4018l-1r0 0.0 0.2 0.4 0.6 0.8 1.0 1.2 0.0 0.8 1.6 2.4 3.2 4.0 4.8 5.6 dc bias(amps) inductance( h) 0 20 40 60 80 100 temp rise( ) inductance( h) temp.rise( ) sig4018l-1r2 0.0 0.3 0.6 0.9 1.2 1.5 0.0 0.4 0.8 1.2 1.6 2.0 2.4 2.8 3.2 3.6 4.0 4.4 4.8 5.2 5.6 dc bias(amps) inductance( h) 0 20 40 60 80 100 temp rise( ) inductance( h) temp.rise( ) sig4018l-1r5 0.0 0.3 0.6 0.9 1.2 1.5 1.8 0.0 0.4 0.8 1.2 1.6 2.0 2.4 2.8 3.2 3.6 4.0 4.4 4.8 dc bias(amps) inductance( h) 0 10 20 30 40 50 60 70 temp rise( ) inductance( h) temp.rise( ) sig4018l-1r8 0.0 0.3 0.6 0.9 1.2 1.5 1.8 2.1 0.0 0.3 0.6 0.9 1.2 1.5 1.8 2.1 2.4 2.7 3.0 3.3 3.6 3.9 4.2 dc bias(amps) inductance( h) 0 10 20 30 40 50 60 70 temp rise( ) inductance( h) temp.rise( ) sig4018l-2r2 0.0 0.5 1.0 1.5 2.0 2.5 3.0 0.0 0.4 0.8 1.2 1.6 2.0 2.4 2.8 3.2 3.6 4.0 4.4 dc bias(amps) inductance( h) 0 20 40 60 80 100 temp rise( ) inductance( h) temp.rise( ) sig4018l-3r3 0.0 0.7 1.4 2.1 2.8 3.5 4.2 0.0 0.3 0.6 0.9 1.2 1.5 1.8 2.1 2.4 2.7 3.0 3.3 3.6 dc bias(amps) inductance( h) 0 10 20 30 40 50 60 70 temp rise( ) inductance( h) temp.rise( ) sig4018l-4r7 0.0 0.9 1.8 2.7 3.6 4.5 5.4 0.0 0.3 0.6 0.9 1.2 1.5 1.8 2.1 2.4 2.7 3.0 3.3 dc bias(amps) inductance( h) 0 20 40 60 80 100 temp rise( ) inductance( h) temp.rise( )
specification for approval document : sig4018l-xxx revision : a4 page : 4 of 11 sig4018l-6r8 0.0 1.4 2.8 4.2 5.6 7.0 8.4 0.0 0.2 0.4 0.6 0.8 1.0 1.2 1.4 1.6 1.8 2.0 2.2 2.4 2.6 2.8 dc bias(amps) inductance( h) 0 20 40 60 80 100 temp rise( ) inductance( h) temp.rise( ) sig4018l-8r2 0.0 1.6 3.2 4.8 6.4 8.0 9.6 0.0 0.2 0.4 0.6 0.8 1.0 1.2 1.4 1.6 1.8 2.0 2.2 2.4 dc bias(amps) inductance( h) 0 15 30 45 60 75 90 temp rise( ) inductance( h) temp.rise( ) sig4018l-100 0.0 2.0 4.0 6.0 8.0 10.0 12.0 0.0 0.2 0.4 0.6 0.8 1.0 1.2 1.4 1.6 1.8 2.0 2.2 2.4 dc bias(amps) inductance( h) 0 20 40 60 80 100 temp rise( ) inductance( h) temp.rise( ) sig4018l-150 0.0 3.0 6.0 9.0 12.0 15.0 18.0 0.0 0.2 0.4 0.6 0.8 1.0 1.2 1.4 1.6 1.8 2.0 dc bias(amps) inductance( h) 0 15 30 45 60 75 temp rise( ) inductance( h) temp.rise( ) sig4018l-220 0.0 4.5 9.0 13.5 18.0 22.5 27.0 0.0 0.2 0.4 0.6 0.8 1.0 1.2 1.4 1.6 dc bias(amps) inductance( h) 0 15 30 45 60 75 temp rise( ) inductance( h) temp.rise( ) sig4018l-330 0.0 7.0 14.0 21.0 28.0 35.0 42.0 0.0 0.1 0.2 0.3 0.4 0.5 0.6 0.7 0.8 0.9 1.0 1.1 1.2 dc bias(amps) inductance( h) 0 15 30 45 60 75 temp rise( ) inductance( h) temp.rise( ) SIG4018L-470 0.0 9.0 18.0 27.0 36.0 45.0 54.0 0.0 0.1 0.2 0.3 0.4 0.5 0.6 0.7 0.8 0.9 1.0 1.1 dc bias(amps) inductance( h) 0 20 40 60 80 100 temp rise( ) inductance( h) temp.rise( ) sig4018l-680 0 14 28 42 56 70 0.0 0.1 0.2 0.3 0.4 0.5 0.6 0.7 0.8 dc bias(amps) inductance( h) 0 10 20 30 40 50 60 70 temp rise( ) inductance( h) temp.rise( )
specification for approval document : sig4018l-xxx revision : a4 page : 5 of 11 sig4018l-101 0.0 20.0 40.0 60.0 80.0 100.0 120.0 0.00 0.10 0.20 0.30 0.40 0.50 0.60 0.70 dc bias(amps) inductance( h) 0 20 40 60 80 100 temp rise( ) inductance( h) temp.rise( ) sig4018l-221 0.0 45.0 90.0 135.0 180.0 225.0 270.0 0.00 0.05 0.10 0.15 0.20 0.25 0.30 0.35 0.40 0.45 dc bias(amps) inductance( h) 0 20 40 60 80 100 temp rise( ) inductance( h) temp.rise( ) sig4018l-331 0.0 70.0 140.0 210.0 280.0 350.0 420.0 0.00 0.05 0.10 0.15 0.20 0.25 0.30 0.35 0.40 dc bias(amps) inductance( h) 0 20 40 60 80 100 temp rise( ) inductance( h) temp.rise( )
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