SMT POWER INDUCTORS
Toroid - Military/Aerospace SLED Series
Ruggedized header with SLED rails
for secure board mounting
Current Rating:
up to 3.8A
DC
Inductance Range:
9.4µH to 439µH
Electrical Specifications @ 25°C — Operating Temperature -40°C to +130°C
Part
9
Number
SLED 25
Inductance
@ Irated
(µH)
9.4
13.3
23
50
75
90
137
200
305
439
Irated
(A )
3.80
3.20
2.40
1.60
1.30
1.20
1.00
0.82
0.66
0.56
DCR
(mΩ)
TYP
27
40
65
121
181
246
387
585
845
1322
MAX
32
46
74
135
220
285
425
673
972
1520
ET
(V-µsec)
15.2
18.8
24.3
37.0
44.3
49.2
59.4
71.3
85.8
99.6
Inductance
@ 0A
DC
(µH ±10%)
10.4
14.6
25
56
83
100
152
220
331
472
100 Gauss
ET
100
(V-µsec)
2.65
3.13
4.10
6.15
7.47
8.19
10.12
12.17
14.94
17.83
1 Amp DC
H
1
(Orsted)
11.95
14.12
18.46
27.69
33.67
36.93
45.61
54.85
67.34
80.37
PL8500
PL8501
PL8502
PL8503
PL8504
PL8505
PL8506
PL8507
PL8508
PL8509
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, calculate I
DC
2
X R
N
.
6. For core loss, using frequency (f) and operating flux density (B),
calculate 6.11 x 10
-18
x B
2.7
x f
2.04
.
7. For flux density (B), calculate ET (V-µsec) for the application, divide by ET
100
from the table, and multiply by 100.
8. Limit the DC bias (H) to 46 orsteds. Calculate H by multiplying H
1
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. PL8500 becomes PL8500T). Pulse complies to industry standard
tape and reel specification EIA481.
Mechanical
Schematic
1
2
.400
10,16
.525
13,34
MAX
.560
14,22
.480
12,19
.440
11,18
.500
12,70
.235
5,97
.625
MAX
15,88
.310
7,87
.004/0,10
2 SURFACES
Pan & Tube
. . . . . . . . .35/tube
Tape & Reel
. . . . . . . .300/reel
MSL
. . . . . . . . . . . . . . . . . . . .3
Dimensions:
Inches
mm
Unless otherwise specified,
all tolerances are ± .010
0,25
SUGGESTED PAD LAYOUT
For More Information:
Pulse Worldwide
Headquarters
2 Pearl Buck Court
Bristol, PA 19007
U.S.A.
www.pulseeng.com
TEL: 215 781 6400
FAX: 215 781 6403
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
Pulse North China
China Headquarters
Room 1002
No. 1
Industrial District
Changan, Dongguan
China
TEL: 86 769 5538070
FAX: 86 769 5538870
No. 819
Nanjing West Rd
Shanghai
China
TEL: 86 21 32181071
FAX: 86 21 32181396
Pulse South Asia
150 Kampong Ampat
#07-01/02
KA Centre
Singapore 368324
TEL: 65 6287 8998
FAX: 65 6280 0080
Pulse North Asia
3F-4, No. 81, Sec. 1
Hsin Tai Wu Road
Hsi-Chih
Taipei Hsien
Taiwan
TEL: 886 2 26980228
FAX: 886 2 26980948
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, 2005. Pulse Engineering, Inc. All rights reserved.
www.pulseeng.com
M113.A (10/05)
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