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srr4028 series - shielded smd power inductors features height of 3.0 mm max. current rating up to 3.1 a rohs compliant* applications input/output of dc/dc converters power supplies for: ? portable communication equipment ? camcorders ? lcd tvs ? car radios electrical specifications product dimensions 6r8 4.80 0.20 (.189 .008) 4.80 0.20 (.189 .008) 1.60 (.063) typ. 1.60 (.063) typ. 1.60 (.063) typ. 2.80 0.20 (.110 .008) general specifications test voltage .....................0.1 v, 100 khz reflow soldering .....230 ?c; 50 sec max. operating temperature ..-40 c to +125 c (temperature rise included) storage temperature..-40 c to +125 c resistance to soldering heat ................................260 c for 10 sec. materials core material.................................ferrite wire ............................enameled copper adhesive..............................epoxy resin terminal.....................................ag/ni/sn rated current ......... ind. drop of 35 % typ. at isat temperature rise .............30 ?c typ. at irms packaging.....................500 pcs. per reel recommended layout 5.30 (.209) 2.00 (.079) ref. 1.50 (.059) ref. 2.00 (.079) ref. 1.80 (.071) ref. ref. r inductance 100 khz q test srf dcr bourns part no. ( h) tol. % ref. frequency typ. max. irms isat (mhz) (mhz) (m ? ? ) (a) (a) srr4028-1r2y 1.2 30 9.34 7.96 176 20 3.10 2.560 srr4028-1r8y 1.8 30 9.18 7.96 146 25 2.70 2.200 srr4028-2r2y 2.2 30 9.24 7.96 111 28 2.50 2.050 srr4028-2r7y 2.7 30 8.64 7.96 92 30 2.35 1.800 srr4028-3r3y 3.3 30 7.72 7.96 76 35 2.15 1.650 srr4028-3r9y 3.9 30 8.58 7.96 56 60 1.72 1.500 srr4028-4r7y 4.7 30 8.12 7.96 55 70 1.55 1.300 srr4028-5r6y 5.6 30 9.56 7.96 69 85 1.38 1.200 srr4028-6r8y 6.8 30 9.624 7.96 77 90 1.30 1.150 srr4028-8r2y 8.2 30 8.24 7.96 45 100 1.25 1.050 srr4028-100y 10 30 11.26 2.52 34 110 1.19 1.000 srr4028-120y 12 30 11.26 2.52 25 125 1.12 0.850 srr4028-150y 15 30 9.66 2.52 27 150 1.03 0.780 srr4028-180y 18 30 11.64 2.52 25 160 0.98 0.750 srr4028-220y 22 30 8.26 2.52 23 185 0.93 0.720 SRR4028-270Y 27 30 10.76 2.52 18 200 0.89 0.600 srr4028-330y 33 30 9.7 2.52 16 230 0.82 0.580 srr4028-390y 39 30 9.74 2.52 14 250 0.80 0.500 srr4028-470y 47 30 10.88 2.52 13 280 0.75 0.480 srr4028-560y 56 30 9 2.52 13 320 0.70 0.410 srr4028-680y 68 30 8.42 2.52 11 400 0.63 0.360 srr4028-820y 82 30 8.6 2.52 8 520 0.56 0.320 srr4028-101y 100 30 8.78 0.796 9 600 0.51 0.300 srr4028-121y 120 30 13.32 0.796 8 700 0.47 0.280 srr4028-151y 150 30 11.72 0.796 6 860 0.42 0.260 srr4028-181y 180 30 13.86 0.796 7 1000 0.39 0.230 srr4028-221y 220 30 11.3 0.796 5 1250 0.34 0.200 srr4028-271y 270 30 17.46 0.796 5 1500 0.32 0.180 srr4028-331y 330 30 16.48 0.796 5 1700 0.30 0.170 srr4028-391y 390 30 13.18 0.796 4 2200 0.26 0.160 srr4028-471y 470 30 13.26 0.796 3 2600 0.24 0.155 srr4028-561y 560 30 16.46 0.796 3 3000 0.22 0.150 dimensions: mm (inches) *rohs directive 2002/95/ec jan 27 2003 including annex specifications are subject to change without notice. customers should verify actual device performance in their specific applications. *rohs compliant temperature (c) 25 75 125 175 225 275 0 50 100 150 200 250 300 time (seconds) 120 - 150 seconds 60 - 90 seconds 260? peak 190? 150? 220? ramp down 6?/second maximum <1> 255? <1> maximum of 10 seconds between +255? and +260? ramp up 3?/second maximum 10 seconds minimum rev. 02/22/05 soldering profile
inductance vs. current 10 1 23 5710 2 23 57 dc current (ma) inductance ( h) 10 3 10 4 23 57 10 0 7 10 1 7 5 3 2 10 2 7 5 3 2 7 5 3 2 1r2 100 4r7 330 151 561 specifications are subject to change without notice. customers should verify actual device performance in their specific applications. surface mount chip inductor capability matrix 08/07 srr4028 series - shielded smd power inductors packaging specifications 14.0 + 0 (.551 + 0) 16.5 (.650) 2.0 0.5 (.079 .020) 50.0 - 0 (1.969 - 0) 178.0 (7.00) dia. 13.0 (.511) dia. 13.0 (.511) dia. 21.0 0.8 (.827 .032) dimensions: mm (inches) start end 4.0 (.157) 8.0 (.315) 200 (7.87) no component no component components 400 (15.75) user direction of feed 6r8 6r8 6r8 6r8 qty: 500 pcs. per reel electrical schematic lcr meter

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Price & Availability of SRR4028-270Y

Part #	Manufacturer	Description	Price	BuyNow Qty.
SRR4028-270Y 14P7359	Bourns Inc	Surface Mount Power Inductor, Srr4028 Series, 27 H, 30%, Shielded, 0.2 Ohm, 890 Ma \|Bourns SRR4028-270Y	50000: USD0.296 30000: USD0.309 20000: USD0.332 10000: USD0.356 5000: USD0.386 1: USD0.394	0
SRR4028-270Y 44AC2010	Bourns Inc	Inductor, Shielded, 27Uh, 0.89A, 30%; Inductance:27Μh; Rms Current (Irms):890Ma; Inductor Construction:Shielded; Saturation Current (Isat):600Ma; Product Range:Srr4028 Series; Inductor Case/Package:-; Dc Resistance Max:0.2Ohm Rohs Compliant: Yes \|Bourns SRR4028-270Y	100: USD0.436	0

Part #	Manufacturer	Description	Price	BuyNow Qty.
SRR4028-270Y SRR4028-270Y	Bourns Inc	Power Inductor (SMD), 27 uH, ± 30%, 890 mA, Shielded, 600 mA, 4.8mm x 4.8mm x 2.8mm - Tape and Reel (Alt: SRR4028-270Y)	100000: USD0.25888 50000: USD0.26302 10000: USD0.26923 5000: USD0.27544 3000: USD0.28166 2000: USD0.28787 1000: USD0.31794	0

Part #	Manufacturer	Description	Price	BuyNow Qty.
SRR4028-270Y 652-SRR4028-270Y	Bourns Inc	Power Inductors - SMD 27uH 30% SMD 4028	1: USD0.79 10: USD0.566 100: USD0.408 500: USD0.408 1000: USD0.361 2500: USD0.339 10000: USD0.321 25000: USD0.316	970

Part #	Manufacturer	Description	Price	BuyNow Qty.
SRR4028-270Y V72:2272_06262865	Bourns Inc	Inductor Power Shielded Wirewound 27uH 30% 100KHz 10.76Q-Factor Ferrite 0.89A 0.2Ohm DCR T/R	500: USD0.4143 250: USD0.4194 236: USD0.4245	535
SRR4028-270Y V79:2366_27450488	Bourns Inc	Inductor Power Shielded Wirewound 27uH 30% 100KHz 10.76Q-Factor Ferrite 0.89A 0.2Ohm DCR T/R	25000: USD0.2655 10000: USD0.2658 2500: USD0.2685 1000: USD0.2864 500: USD0.2998 100: USD0.3029 49: USD0.357	49

Part #	Manufacturer	Description	Price	BuyNow Qty.
SRR4028-270Y	Bourns Inc	Inductor Power Shielded Wirewound 27uH 30% 100KHz 10.76Q-Factor Ferrite 890mA 200mOhm DCR T/R	25000: USD0.2885 15000: USD0.2929 10000: USD0.2974 7500: USD0.3019 5000: USD0.3065 2500: USD0.3295 1000: USD0.3508 500: USD0.3561	0

Part #	Manufacturer	Description	Price	BuyNow Qty.
SRR4028-270Y 63055920	Bourns Inc	Inductor Power Shielded Wirewound 27uH 30% 100KHz 10.76Q-Factor Ferrite 0.89A 0.2Ohm DCR T/R	244: USD0.4245	535
SRR4028-270Y 66711610	Bourns Inc	Inductor Power Shielded Wirewound 27uH 30% 100KHz 10.76Q-Factor Ferrite 0.89A 0.2Ohm DCR T/R	49: USD0.357	49

Part #	Manufacturer	Description	Price	BuyNow Qty.
SRR4028-270Y SRR4028-270Y	Bourns Inc	Power Inductors - SMD 27uH 30% SMD 4028	500: USD0.404 1000: USD0.357 2500: USD0.336 5000: USD0.329 12500: USD0.32	1000
SRR4028-270Y SRR4028-270Y.	Bourns Inc	Power Inductors - SMD 27 UH 30%	10: USD0.733	0

Part #	Manufacturer	Description	Price	BuyNow Qty.
SRR4028-270Y SRR4028-270Y	Bourns Inc	Power Inductor (SMD), 27 uH, � 30%, 890 mA, Shielded, 600 mA, 4.8mm x 4.8mm x 2.8mm - Tape and Reel (Alt: SRR4028-270Y)		0

Part #	Manufacturer	Description	Price	BuyNow Qty.
SRR4028-270Y	Bourns Inc	Inductor Power Shielded Wirewound 27uH 30% 100KHz 10.76Q-Factor Ferrite 890mA 200mOhm DCR T/R	25000: USD0.2885 15000: USD0.2929 10000: USD0.2974 7500: USD0.3019 5000: USD0.3065 2500: USD0.3295 1000: USD0.3508 500: USD0.3561	0

Part #	Manufacturer	Description	Price	BuyNow Qty.
SRR4028-270Y	Bourns Inc			1120

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