### Data Sheet

```SMT POWER INDUCTORS
Toroid - Bobcat Series
Height: 5.5mm Max
Footprint: 12.7mm x 12.7mm Max
Current Rating: up to 3.8A
Inductance Range: 9.4µH to 439µH
Electrical Specifications @ 25°C — Operating Temperature -40°C to +130°C 11
Part 9,10
Number
Inductance
@ Irated
(µH)
Irated
(A )
P0144
P0145
P0146
P0147
P0148
P0149
P0150
P0151
P0152
P0153
9.4
13.3
23
50
75
90
137
200
305
439
3.80
3.13
2.43
1.65
1.35
1.23
0.99
0.81
0.65
0.53
DCR (mΩ)
TYP
MAX
27
40
65
121
181
246
387
585
845
1322
31
46
75
139
208
283
445
673
972
1520
NOTES: 1. The reference inductance at rated DC current is a typical value.
2. Temperature rise is 50°C in typical buck or boost circuits at 250kHz and
with the reference ET applied to the inductor.
3. Total loss in the inductor is 380mW for 50°C temperature rise above ambient.
4. To estimate temperature rise in a given application, determine copper and
core losses, divide by 380 and multiply by 50.
5. For the copper loss (mW), calculate IDC2 X RN.
6. For core loss (mW), using frequency (f in Hertz) and operating flux density
(B in Gauss), calculate 6.11 x 10-18 x B2.7 x f2.04.
7. For flux density (B in Gauss), calculate ET (V-µsec) for the application, divide
by ET100 from the table, and multiply by 100.
ET
(V-µsec)
Inductance
(µH ±20%)
100 Gauss
ET100
(V-µsec)
1 Amp DC
H1
(Orsted)
15.2
18.8
24.3
37.0
44.3
49.2
59.4
71.3
85.8
99.6
10.4
14.6
25
56
83
100
152
220
331
472
2.65
3.13
4.10
6.15
7.47
8.19
10.12
12.17
14.94
17.83
11.95
14.12
18.46
27.69
33.67
36.93
45.61
54.85
67.34
80.37
8. Limit the DC bias (H) to 46 orsteds. Calculate H by multiplying H1 from the table
by IDC of the application.
9. Optional Tape & Reel packaging can be ordered by adding a "T" suffix to the part
number (i.e. P0144 becomes P0144T). Pulse complies to industry standard tape
and reel specification EIA481.
10. To order RoHS compliant part, add the suffix “NL” to the part number
(i.e. P0144 becomes P0144NL and P0144T becomes P0144NLT).
11. The temperature of the component (ambient plus temperature rise) must be within
the stated operating temperature range.
Mechanical
Schematic
2X .060
1,52
.500 MAX
12,70
1
.470
11,94
.400
10,16
R
.215 MAX
5,46
.390
9,91
.500 MAX
12,70
2
.220
5,59
.005/0,13
4 SURFACES
Weight . . . . . . . . 1.5 grams
Tape & Reel . . . . . . 500/reel
Tube . . . . . . . . . . . . 40/tube
Dimensions: Inches
mm
Unless otherwise specified, all tolerances are ± .010
0,25
.510
12,95
TAPE & REEL LAYOUT
.945 ± .012
24,00 ± 0,30
.510
12,95
.630
16,00
USER DIRECTION OF FEED
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 5538070 • Taiwan 886 3 4641811
www.pulseeng.com
70
SPM2006 (3/06)
```