
9
PC500.B (5/02)
US 858 674 8100
UK 44 1483 401 700
France 33 3 84 35 04 04
Singapore 65 287 8998
Taiwan 886 2 2698 0228
Hong Kong 852 2788 6588
http://www.pulseeng.com
SMT POWER INDUCTORS
Shielded Drum Core - P1166 Series
Low profile and suitable for compact surface
area mounting
Large permissible DC current
Low DC resistance
Mechanical
Schematic
Weight
. . . . . . . . 0.7 grams
Tape & Reel
. . . . . 1200/reel
Dimensions:
Inches
Unless otherwismm
0,25
Part
Number
P1166.681T
P1166.102T
P1166.162T
P1166.302T
P1166.482T
P1166.682T
P1166.103T
P1166.123T
P1166.153T
P1166.183T
P1166.223T
P1166.273T
P1166.333T
P1166.393T
P1166.473T
P1166.563T
P1166.683T
P1166.823T
P1166.104T
P1166.124T
P1166.154T
P1166.184T
P1166.224T
P1166.274T
P1166.334T
P1166.394T
P1166.474T
P1166.564T
P1166.684T
P1166.824T
P1166.105T
Notes from Table
1. The rated current as listed is either the saturation current
or the heating current depending on which value is lower.
Inductance
@Irated
(
μ
H) MIN
0.44
0.65
1.0
2.0
3.1
4.4
7.5
9.0
11.3
13.5
16.5
20.3
24.8
29.3
35.3
42.0
51.0
61.5
75.0
90.0
113
135
165
203
248
293
353
420
510
615
750
Irated
1
(A
DC
)
5.5
4.9
4.0
2.8
2.4
2.1
1.6
1.5
1.4
1.2
1.2
1.0
0.94
0.86
0.83
0.73
0.67
0.60
0.56
0.53
0.46
0.39
0.35
0.32
0.31
0.26
0.25
0.23
0.20
0.17
0.15
DCR (m
)
Inductance
@0A
DC
(
μ
H)
0.68±30%
1.0±30%
1.6±30%
3.0±30%
4.8±30%
6.8±30%
10±20%
12±20%
15±20%
18±20%
22±20%
27±20%
33±20%
39±20%
47±20%
56±20%
68±20%
82±20%
100±20%
120±20%
150±20%
180±20%
220±20%
270±20%
330±20%
390±20%
470±20%
560±20%
680±20%
820±20%
1000±20%
Saturation
Current
@25°C (A)
5.9
5.2
4.0
3.0
2.4
2.1
1.8
1.7
1.5
1.4
1.2
1.1
1.0
0.86
0.83
0.73
0.67
0.61
0.56
0.55
0.46
0.42
0.37
0.32
0.31
0.29
0.26
0.23
0.21
0.20
0.16
2
Heating
Current
(A)
5.5
4.9
4.4
2.8
2.5
2.2
1.6
1.5
1.4
1.2
1.2
1.0
0.94
0.90
0.85
0.74
0.70
0.60
0.57
0.53
0.46
0.39
0.35
0.33
0.31
0.26
0.25
0.23
0.20
0.17
0.15
3
Core Loss
4
Factor K
380.2
434.9
569.3
782.8
988.8
1157.2
1349.6
1515.1
1677.4
1806.4
2100.1
2248.4
2437.0
2677.9
2919.9
3271.3
3645.8
3962.2
4301.0
4650.2
4995.1
5822.3
6095.8
7092.3
7923.8
8623.8
9433.5
10194
11423
12586
13928
TYP
5.0
6.2
7.8
19
25
32
58
62
74
100
106
146
167
183
206
271
303
411
464
528
695
992
1210
1407
1580
2178
2400
2705
3658
5021
6720
MAX
6.0
7.5
11
23
31
40
70
78
92
124
126
180
205
211
260
340
370
500
580
645
860
1190
1480
1750
1880
2600
2910
3400
4450
6200
8000
2. The saturation current is the current which causes the
inductance to drop to 65% (or 75%) of its nominal induc-
tance at zero bias. This current is determined by placing
the component at room ambient (25°C), and applying a
short duration pulse current (to eliminate self-heating
effects) to the component.
3. The heating current is the dc current, which causes the
temperature of the part to increase by not more than 40°C.
This current is determined by extending the terminals of the
component with 30mm length 28 gauge buss wires and
applying the current to the device for 30 minutes. The tem-
perature is measured by placing the thermocouple between
the winding and the shield.
4. In high volt*time applications, additional heating in the
component can occur due to core losses in the inductor
which may necessitate derating the current in order to limit
the temperature rise of the component. In order to deter-
mine the approximate total loss (or temperature rise) for a
given application, both copper losses and core losses
should be taken into account.
Estimated Temperature Rise:
Trise = [Total loss (mW) / 1.883]
.833
(
o
C )
Total loss = Copper loss + Core loss (mW)
Copper loss = Irms
2
x DCR (Typical) (mW)
Irms = [I
DC
2
+
I
2
/12]
1/2
(A)
Core loss = 4.26 x 10
-8
x f (kHz)
1.1
x (K x
I)
2.15
(mW),
where f varies between 25 kHz and 300 kHZ, and B less
than 2000 Gauss.
Electrical Specifications @ 25°C — Operating Temperature -40°C to +85°C