A0009-AL

Document 309
Flyback Transformer
This surface mount flyback transformer is designed for use
with National Semiconductor LM5000 DC/DC regulator.
The core completely encloses the windings to minimize
EMI interference. The transformer features very low DCR,
500 Vrms isolation and a leakage inductance rating of just
For National Semiconductor
LM5000 DC/DC Regulator
1.0 µH. Coilcraft can also custom engineer a transformer
to meet your specific requirements.
For free evaluation samples, contact Coilcraft or order them
on-line at www.coilcraft.com.
Inductance Leakage
±20% (µH) InputDCR max
Inductance3 Turns ratio Isolation4
Part number1 Pins 1 – 4Pins 2 – 3 voltage (V) Output
(Ohms)
max (µH)
in : out : aux(Vrms)
A0009-AL_
100
100
18 – 55 3.3 V @ 3 A 0.150 (1 – 4)
1.0
1 : 0.33 : 1
500
0.150 (2 – 3)
0.012 (5,6 – 7,8)
2
1. When ordering, please specify a packaging code:
A0009-ALD
Packaging:D =13″ machine ready reel. EIA-481 embossed plastic
tape (150 per full reel).
B
=Less than full reel. In tape, but not machine ready.
To have a leader and trailer added ($25 charge), use
code letter D instead.
2. Inductance measured at 100 kHz, 0.1 Vrms, 0 Adc.
3. Leakage inductance measured at 100 kHz, 0.1 Vrms from pins 1 to 4
with all other pins shorted.
4. Isolation measured from pin 1 to pins 5 and 6; from 2 to 5 and 6; and
from pins 1, 2, 5 and 6 to the core for one minute.
5. Electrical specifications at 25°C.
Refer to Doc 362 “Soldering Surface Mount Components” before soldering.
Core material Ferrite
Terminations RoHS tin-silver over tin over nickel over phos bronze.
Other terminations available at additional cost.
Weight 7.86 g
Ambient temperature –40°C to +85°C
Storage temperature Component: –40°C to +85°C.
Tape and reel packaging: –40°C to +80°C
Resistance to soldering heat Max three 40 second reflows at
+260°C, parts cooled to room temperature between cycles
Moisture Sensitivity Level (MSL) 1 (unlimited floor life at <30°C /
85% relative humidity)
Failures in Time (FIT) / Mean Time Between Failures (MTBF)
38 per billion hours / 26,315,789 hours, calculated per Telcordia SR-332
Packaging 150 per 13″ reel Plastic tape: 44 mm wide, 0.5 mm thick,
28 mm pocket spacing, 13.8 mm pocket depth
PCB washing Only pure water or alcohol recommended
4
0.53 max
13,5
Input
1
2
0.87 max
22,0
5
0.75 max
19,0
1
Output
3.3 V @ 3 A
Auxiliary
0.76
19,3
4
5
6
3
0.15
3,76
0.20
5,00
7
8
8
Pin 1 indicator
Bottom view
0.08 × 0.11
2,00 × 2,79
Recommended
Land Pattern
Dimensions are in
inches
mm
US +1-847-639-6400 [email protected]
UK +44-1236-730595 [email protected]
Taiwan +886-2-2264 3646 [email protected]
China +86-21-6218 8074 [email protected]
Singapore + 65-6484 8412 [email protected]
Document 309 Revised 10/28/08
© Coilcraft Inc. 2013
This product may not be used in medical or high
risk applications without prior Coilcraft approval.
Specification subject to change without notice.
Please check web site for latest information.
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