Document 179
SMT Power Inductors – DO3316 Series
The DO3316 Series of surface mount inductors is designed 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, stepup 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
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%1 DCR max SRF typ2 Isat3
(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
0.510
max
12,95
Irms4
(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
0.330
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
0.115
2,92
0.300
7,62
Part Marking
Start
Dash
number
Finish
Multiplier
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.
© Coilcraft, Inc. 2005
Internal
code
XXX
1st
significant
digit
2nd
significant
digit
X
1. Tested at 100 kHz, 0.1 Vrms, 0 Adc.
2. SRF >13 MHz measured using Agilent/HP 8753D network analyzer;
<13 MHz using Agilent/HP 4192A.
3. DC current at which inductance drops 10% (typ) from its value without
current.
4. Average current for 40°C temperature rise from 25°C.
5. Operating temperature range -40°C to +85°C.
6. Electrical specifications at 25°C.
See Qualification Standards section for environmental and test data.
See Color Coding section for part marking data.
Document 179
Revised 12/10/04
