SMT POWER INDUCTORS
Shielded Toroid Series - Ros1/Ros2 Series
Height: 3.2mm and 5.3mm Max
Footprint: 8.1mm x 5.3mm and 14.0mm x 10.2mm
Current Rating: up to 5A
Inductance Range: .51µH to 357µH
Electrical Specifications @ 25°C — Operating Temperature -40°C to +130°C
Pulse Inductance DCR (mΩΩ)Inductance Reference Trise Coreloss ET
Part @ Irated Irated @ 0ADC ET Factor Factor Factor
Number (µH Min) (A) TYP MAX (µH +/- 15%) (V*µsec) (K0) (K1) (K2)
P0430 0.51 2.00 14 16.1 .7 .8 1.45 1.27E-11 476.2
P0431 0.76 1.90 18 20.7 1.1 .8 1.45 1.27E-11 370.4
P0432 0.85 1.50 18 20.7 1.1 1.2 1.45 1.27E-11 370.4
P0433 1.44 1.20 28 32.2 1.9 1.8 1.45 1.27E-11 277.8
P0434 1.87 1.20 34 39.1 2.6 1.8 1.45 1.27E-11 238.1
P0435 2.72 1.00 40 46 3.9 2.3 1.45 1.27E-11 196.1
P0436 4.33 0.70 73 84 6.0 3.1 1.45 1.27E-11 158.7
P0437 5.35 0.60 100 115 7.1 3.3 1.45 1.27E-11 144.9
P0438 8.84 0.50 140 161 12.2 4.4 1.45 1.27E-11 111.1
P0439 10.79 0.45 155 178 14.7 5.0 1.45 1.27E-11 101.0
P0440 17.59 0.34 250 288 23.8 6.5 1.45 1.27E-11 79.4
P0441 25.50 0.29 280 322 33.8 8.4 1.45 1.27E-11 66.7
P0442 35.80 0.24 440 506 49 9.8 1.45 1.27E-11 55.6
P0443 52.70 0.20 650 747 72 12 1.45 1.27E-11 45.7
P0444 79 0.17 1050 1208 110 14 1.45 1.27E-11 37.0
P0445 88 0.16 1065 1225 122 15 1.45 1.27E-11 35.1
P0446 127 0.14 1600 1840 179 18 1.45 1.27E-11 29.0
P0450 0.51 5.00 8.1 9.3 .65 3 .508 8.87E-11 181.8
P0451 0.67 5.00 8.7 10 .86 3.1 .508 8.87E-11 151.5
P0452 1.09 5.00 11.4 13.1 1.5 .5 .508 8.87E-11 113.6
P0453 1.53 5.00 13.0 15 2.3 1.0 .508 8.87E-11 90.9
P0454 1.78 3.00 15.0 17.3 2.3 7.5 .508 8.87E-11 90.9
P0455 3.74 2.50 23.0 26.5 5.1 10.5 .508 8.87E-11 60.6
P0456 4.76 2.00 26.1 30 6.3 13 .508 8.87E-11 56.8
P0457 5.61 1.80 33.0 38 7.5 14 .508 8.87E-11 50.5
P0458 9.09 1.50 70.4 81 13.2 15 .508 8.87E-11 39.5
P0459 11.47 1.30 60.0 69 15.5 21 .508 8.87E-11 35.0
P0460 22.95 1.00 90.4 104 34 31 .508 8.87E-11 24.6
P0461 39.10 0.90 123.5 142 57.2 39 .508 8.87E-11 18.9
P0462 40.80 0.80 240.0 276 62.5 35 .508 8.87E-11 18.2
P0463 69.70 0.60 245.2 282 100 55 .508 8.87E-11 14.0
P0464 76.50 0.50 305.2 351 103 54 .508 8.87E-11 14.2
P0465 137 0.40 480.9 553 180 78 .508 8.87E-11 10.0
P0466 182 0.35 681.7 784 254 87 .508 8.87E-11 8.7
P0467 272 0.30 1030.4 1185 422.5 105 .508 8.87E-11 7.0
P0468 357 0.25 1200.0 1380 500 130 .508 8.87E-11 6.1
TWO PACKAGE SIZES:
Ros 1 Series
Ros 2 Series
USA 858 674 8100
••
UK 44 1483 401 700
••
France 33 3 84 35 04 04
••
Singapore 65 6287 8998
••
Shanghai
86 21 54643211 / 2
••
China 86 769 85538070
••
Taiwan 886 3 4641811
www.pulseeng.com
P617.A (3/06)
SMT POWER INDUCTORS
Shielded Toroid Series - Ros1/Ros2 Series
1. Temperature rise is 55°C in typical buck or boost circuits with the rated IDC
current and reference ET applied to the inductor.
2. Total loss in the inductor is 80 mW (ROS 1) and 280 mW (ROS 2) for 55°C
temperature rise above ambient.
3. To estimate temperature rise in a given application, you must determine the
total losses (copper losses + core losses) and apply the following formula:
Temp Rise (C) = (Total Losses (mW)).833 * KO (from table)
4. To determine copper losses, calculate:
Copper Loss (mW) = IDC2 x DCR
5. For core loss in mWatts, using frequency f (in Hz) and operating
flux density B (in Gauss), calculate:
Core Loss (mW) = k2 * f1.26 * B2.11
6. For flux density (B), calculate ET (V-µsec) for the application,
and multiply by ET10 factor from the table.
A
MAX G
F
E
B
MAX
C
D
Suggested Pad Layout
F
1
2
Mechanical Schematic
Notes:
ROS 1 ROS 2
Weight ....................0.29 grams .............1.1 grams
Tape & Reel...............2000/reel ................600/reel
PKG A B C D E F G
ROS 1 .335 .225 .125 .250 .100 .050 .250
8,51 5,72 3,18 6,35 2,54 1,27 6,35
ROS 2 .545 .390 .215 .440 .120 .065 .440
13,84 9,91 5,46 11,18 3,05 1,65 11,18
Dimensions: Inches
mm
Unless otherwise specified, all tolerances are ± .010
0,25
ROS 2
TAPE & REEL LAYOUT
.069
1,75
USER DIRECTION OF FEED
.945
± .012
24,00
± 0,30
.079
2,00
.157
4,00
.453
11,51
.410
10,41
.630
16,00
.220
5,59 .016
0,41
TAPE & REEL LAYOUT
.315
8,00
.050
1,27
.069
1,75
USER DIRECTION OF FEED
.630
± .012
16,00
± 0,30
.230
5,84
.079
2,00
.157
4,00
.295
7,49
.135
3,43 .012
0,30
ROS 1
www.pulseeng.com
P617.A (3/06)
For More Information:
Pulse Worldwide
Headquarters
12220 World Trade Drive
San Diego, CA 92128
U.S.A.
www.pulseeng.com
TEL: 858 674 8100
FAX: 858 674 8262
Pulse
Northern Europe
3 Huxley Road
Surrey Research Park
Guildford, Surrey GU2 5RE
United Kingdom
TEL: 44 1483 401700
FAX: 44 1483 401701
Pulse
Southern Europe
Zone Industrielle
F-39270
Orgelet
France
TEL: 33 3 84 35 04 04
FAX: 33 3 84 25 46 41
Pulse South Asia
150 Kampong Ampat
#07-01/02
KA Centre
Singapore 368324
TEL: 65 6287 8998
FAX: 65 6280 0080
Pulse North Asia
No. 26
Kao Ching Road
Yang Mei Chen
Taoyuan Hsien
Taiwan, R. O. C.
TEL: 886 3 4641811
FAX: 886 3 4641911
Pulse
China Headquarters
No. 1
Industrial District
Changan, Dongguan
China
TEL: 86 769 85538070
FAX: 86 769 85538870
Performance warranty of products offered on this data sheet is limited to the parameters specified. Data is subject to change without notice. Other brand and product
names mentioned herein may be trademarks or registered trademarks of their respective owners.
© Copyright, 2006. Pulse Engineering, Inc. All rights reserved.
Pulse North China
Room 1503
XinYin Building
No. 888 YiShan Road
Shanghai 200233
China
TEL: 86 21 54643211/2
FAX: 86 21 54643210
