11
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 - P1168 Series
Low profile and suitable for compact surface
area mounting
Large permissible DC current
Low DC resistance
Mechanical
Schematic
Weight
. . . . . . . . 2.5 grams
Tape & Reel
. . . . . . 600/reel
Unless otherwise specified, all tolerances are ±0,25
Dimensions:
Inches
mm
Part
Number
P1168.501T
P1168.102T
P1168.162T
P1168.242T
P1168.332T
P1168.452T
P1168.562T
P1168.682T
P1168.103T
P1168.123T
P1168.153T
P1168.183T
P1168.223T
P1168.273T
P1168.333T
P1168.393T
P1168.473T
P1168.563T
P1168.683T
P1168.823T
P1168.104T
P1168.124T
P1168.154T
P1168.184T
P1168.224T
P1168.274T
P1168.334T
P1168.394T
P1168.474T
P1168.564T
P1168.684T
P1168.824T
P1168.105T
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
0.32
0.65
1.0
2.2
2.9
3.6
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
)
14
11
8.5
7.5
6.4
6.0
5.5
4.6
3.6
3.5
3.1
2.8
2.6
2.4
2.2
1.9
1.8
1.7
1.5
1.4
1.2
1.1
1.0
0.90
0.80
0.70
0.66
0.62
0.57
0.53
0.50
0.44
0.40
DCR (m
)
Inductance
@0A
DC
(
μ
H)
0.5±30%
1.0±30%
1.6±30%
2.4±30%
3.3±30%
4.5±30%
5.6±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)
18
14
10
8.1
7.3
6.4
5.7
5.2
4.1
3.8
3.3
2.9
2.7
2.4
2.2
2.0
1.9
1.7
1.5
1.4
1.2
1.1
1.0
0.90
0.80
0.70
0.66
0.62
0.57
0.53
0.50
0.44
0.40
2
Heating
Current
(A)
14
11
8.5
7.5
6.4
6.0
5.5
4.6
3.6
3.5
3.1
2.8
2.6
2.4
2.2
1.9
1.8
1.7
1.6
1.5
1.4
1.3
1.1
1.1
0.93
0.85
0.75
0.71
0.61
0.58
0.54
0.47
0.45
3
Core Loss
4
Factor K
101.9
145.5
181.1
222.3
258.6
305.7
335.6
364.6
443.0
489.0
566.0
591.6
640.4
743.5
820.0
883.0
977.3
1037.4
1174.3
1285.3
1395.7
1547.6
1717.2
1890.6
2094.8
2311.6
2566.6
2778.7
3050.1
3336.6
3665.7
4036.0
4449.1
TYP
1.9
3.0
5.4
6.9
9.5
11
13
18
29
32
40
48
55
67
76
101
112
129
169
191
222
252
346
385
506
596
764
870
1150
1283
1493
1924
2174
MAX
2.3
3.7
6.3
8.1
11
13
15
22
35
37
47
58
67
79
94
126
140
157
202
232
270
316
456
497
681
775
955
1087
1403
1623
1824
2355
2850
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) / 4.728]
.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 = 2.25 x 10
-7
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