Document 179-1
SMT Power Inductors – DO3316 Series
The DO3316 Series of surface mount inductors is de-
signed for the smallest possible size, lowest cost and
highest performance. Their high energy storage and very
low resistance make them the ideal inductors for DC-DC
conversion in notebook computers, PDAs, step-up or step-
down converters, flash memory programmers, etc.
For reliable surface mounting, we’ve designed the DO
Series with a flat top and robust temperature deflection to
prevent damage during solder reflow.
In addition to the standard versions shown here, custom
inductors are available to meet your exact requirements.
Coilcraft
Designer’s Kit C178
contains three samples
each of the parts shown. To order, contact Coilcraft or visit
http://order.coilcraft.com.
Part
number
1
DO3316P-102
DO3316P-152
DO3316P-222
DO3316P-332
DO3316P-472
DO3316P-682
DO3316P-103
DO3316P-153
DO3316P-223
DO3316P-333
DO3316P-473
DO3316P-683
DO3316P-104
DO3316P-154
DO3316P-224
DO3316P-334
DO3316P-474
DO3316P-684
DO3316P-105
L ±20%
2
DCR max SRF typ
3
Isat
4
(µH)
(Ohms)
(MHz)
(A)
1.0
1.5
2.2
3.3
4.7
6.8
10
15
22
33
47
68
100
150
220
330
470
680
1000
0.009
0.010
0.012
0.015
0.018
0.027
0.038
0.046
0.085
0.10
0.14
0.20
0.28
0.40
0.61
1.02
1.27
2.02
3.00
100
90
80
65
45
38
30
27
19
15
12
10
9
6
5
4.5
3.5
2.5
2.0
9.0
8.0
7.0
6.4
5.4
4.6
3.8
3.0
2.6
2.0
1.6
1.4
1.2
1.0
0.8
0.6
0.5
0.4
0.3
Irms
5
(A)
6.8
6.4
6.1
5.4
4.8
4.4
3.9
3.1
2.7
2.1
1.8
1.5
1.3
1.0
0.8
0.6
0.5
0.4
0.3
0.370max
9,40
0.510
max
12,95
0.330
8,38 dia
0.205 max
5,21
Recommended
Land Pattern
0.100
2,54
0.100
2,54
0.290
7,37
0.110
2,79
0.300
7,62
0.115
2,92
1. Part number on reel label may have a B suffix to indicate that the reel is
not machine ready.
2. Tested at 100 kHz, 0.1 Vrms, 0 Adc.
3. SRF >13 MHz measured using Agilent/HP 8753D network analyzer;
<13 MHz using Agilent/HP 4192A.
4. DC current at which inductance drops 10% (typ) from its value without
current.
5. Average current for 40°C temperature rise from 25°C.
6. Operating temperature range -40°C to +85°C.
7. Electrical specifications at 25°C.
See Qualification Standards section for environmental and test data.
See Color Coding section for color dot part marking data.
Part Marking
1st
significant
digit
2nd
significant
digit
Multiplier
Internal
code
Dash
number
XXX
X
Start
Finish
Weight:
0.92 – 1.23 g
Terminations:
Nickel/gold over phos bronze
Tape and reel:
1000/13″ reel 24 mm tape width
For packaging data see Tape and Reel Specifications section.
Specifications subject to change without notice.
Please check our website for latest information.
Document 179-1
Revised 12/10/04
© Coilcraft, Inc. 2005
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