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71 SPM2007 (11/07)
Inductance
DCR (mΩ)
Inductance 100 Gauss 1 Amp DC
Part
9,10
@ Irated
Irated ET
@ 0ADC ET100 H1
Number
(µH)
(A )
TYP MAX
(V-µsec)
(µH ±20%) (V-µsec) (Orsted)
P0144NL 9.4 3.80 27 31 15.2 10.4 2.65 11.95
P0145NL 13.3 3.13 40 46 18.8 14.6 3.13 14.12
P0146NL 23 2.43 65 75 24.3 25 4.10 18.46
P0147NL 50 1.65 121 139 37.0 56 6.15 27.69
P0148NL 75 1.35 181 208 44.3 83 7.47 33.67
P0149NL 90 1.23 246 283 49.2 100 8.19 36.93
P0150NL 137 0.99 387 445 59.4 152 10.12 45.61
P0151NL 200 0.81 585 673 71.3 220 12.17 54.85
P0152NL 305 0.65 845 972 85.8 331 14.94 67.34
P0153NL 439 0.53 1322 1520 99.6 472 17.83 80.37
SMT POWER INDUCTORS
Toroid - Bobcat Series
Electrical Specifications @ 25°C — Operating Temperature -40°C to +130°C
11
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 I
DC
2
X R
N.
6. For core loss (mW), using frequency (f in Hertz) and operating flux density
(B in Gauss), calculate 6.11 x 10
-18
x B
2.7
x f
2.04
.
7. For flux density (B in Gauss), calculate ET (V-µsec) for the application, divide
by ET
100 from the table, and multiply by 100.
Mechanical
Schematic
8. Limit the DC bias (H) to 46 orsteds. Calculate H by multiplying H1 from the table
by I
DC of the application.
9. Optional Tape & Reel packaging can be ordered by adding a "T" suffix to the part
number (i.e. P0144NL becomes P0144NLT). Pulse complies to industry standard
tape and reel specification EIA481.
10. The "NL" suffix indicates an RoHS-compliant part number. Non-NL suffixed parts
are not necessarily RoHS compliant, but are electrically and mechanically equivalent
to NL versions. If a part number does not have the "NL" suffix, but an RoHS
compliant version is required, please contact Pulse for availability.
11. The temperature of the component (ambient plus temperature rise) must be within
the stated operating temperature range.
Height: 5.5mm Max
Footprint: 12.7mm x 12.7mm Max
Current Rating: up to 3.8A
Inductance Range: 9.4µH to 439µH
NOTES:
Weight . . . . . . . . 1.5 grams
Tape & Reel. . . . . . 500/reel
Tube . . . . . . . . . . . . 40/tube
Dimensions:
Inches
mm
Unless otherwise specified, all tolerances are ±
.010
0,25
