d1787-al Coilcraft, Inc., d1787-al Datasheet
d1787-al
Manufacturer Part Number
d1787-al
Description
Smt Power Inductorfor National Semiconductorlm5115 Dc Controller Ic
Manufacturer
Coilcraft, Inc.
Datasheet
1.D1787-AL.pdf
(2 pages)
1. Inductance measured at 100 kHz, 0.1 Vrms, 0 Adc using Coilcraft
2. SRF measured using Agilent/HP 8753D network analyzer and
3. DC current at which the inductance drops 20% (typ) from its value
4. Average current for a 40°C rise above 25°C ambient.
5. Operating temperature range -40°C to +85°C.
6. Electrical specifications at 25°C.
See Qualification Standards section for environmental and test data.
© Coilcraft, Inc. 2010
D1787-AL
number
SMD-D fixture in Agilent/HP 4284A impedance analyzer.
Coilcraft SMD-D test fixture.
without current.
Part
Inductance
±10% (µH) (mOhms) (MHz)
33.0
SMT Power Inductor
1
DCR
max
2.8
SRF
typ
9.0
2
Specifications subject to change without notice.
Please check our website for latest information.
Isat
(A)
8.0
3
Irms
23.0
(A)
4
The D1787-AL was developed for use with the National
Semiconductor LM5115 Secondary Side Post Regula-
tor Controller and LM5025 Primary Side Controller. This
flat wire power inductor offers extremely low dc resis-
tance and very high current ratings (up to 23 A rms ).
The flat core allows for exceptional heat dissipation
and provides an excellent surface for pick and place
operation.
This inductor is ideal for power supply applications where
high current handling is essential and is perfect for low-
voltage dc-dc converters. Custom inductance values are
also possible.
Request free evaluation samples by contacting Coilcraft
or visiting www.coilcraft.com.
Temperature Rise vs Current
50
45
40
35
30
25
20
15
10
5
0
0
5
10
Current (A rms)
For National Semiconductor
LM5115 DC Controller IC
Document 484-1 Revised 11/09/06
15
20
Document 484-1
25
30
35
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d1787-al Summary of contents
Page 1
... Electrical specifications at 25°C. See Qualification Standards section for environmental and test data. © Coilcraft, Inc. 2010 The D1787-AL was developed for use with the National Semiconductor LM5115 Secondary Side Post Regula- tor Controller and LM5025 Primary Side Controller. This flat wire power inductor offers extremely low dc resis- tance and very high current ratings ( rms ) ...
Page 2
... SMT Power Inductor - D1787-AL Typical L vs Frequency 1000 100 10 0.1 1 Frequency (MHz) 1.10 max 27,9 COILCRAFT D1787-AL 1.100 max 27,94 CCI0525 0.160 0.240 4,06 6,10 0.655 max 16,6 Terminations: Tin-silver over copper Weight: 34.9 g Packaging: 25 pieces per tray © Coilcraft, Inc. 2010 Typical L vs Current 1000 100 10 0.1 10 100 0 ...