Document 523
Flyback Transformer
For Texas Instruments
LM5071 PoE PD Controller
• Designed to operate in continuous mode at 250 kHz
• TI App Note AN-1430 specifies 84% efficiency at 3 A.
• 1500 Vrms, one minute isolation from primary and aux to
secondary
Core material
Ferrite
Terminations
RoHS tin-silver over tin over nickel over phos bronze.
Other terminations available at additional cost.
Weight
5.97 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
175 per 13″ reel Plastic tape: 32 mm wide, 0.5 mm thick,
28 mm pocket spacing, 12.93 mm pocket depth
PCB washing
Tested with pure water or alcohol only. For other solvents,
see Doc787_PCB_Washing.pdf
Part
number
1
DA2383-AL_
L at 0 A
2
±10% (µH)
127.0
L at
Ipk
3
min (µH)
114.3
Input
voltage (V)
24 –60
DCR max
(Ohms)
0.310 (aux)
0.012 (sec)
0.255 (pri)
Leakage L
4
Turns
max (µH)
ratios
1.25
2
:
1 (pri
:
aux)
6
:
1 (pri
:
sec )
Ipk
3
(A)
Outputs
5
1.0 10 V, 0.05 A (aux)
3.3 V, 4.0 A (sec)
1. When ordering, please specify
packaging
code:
Packaging:
DA2383-ALD
D
= 13″ machine-ready reel. EIA-481 embossed plastic
tape (175 parts 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.
Dot above pin1
2. Inductance is for the primary, measured at 200 kHz, 0.2 Vrms, 0 Adc.
3.
Ipk
is peak primary current drawn at minimum input voltage.
4. Leakage inductance measured on the primary winding with all second-
ary pins shorted.
5. Output of the seconday is with the windings connected in parallel.
6. Electrical specifications at 25°C.
Refer to Doc 362 “Soldering Surface Mount Components” before soldering.
0.500 max
12,70
0.004 /0,10
0.699 max
17,75
0.512
13,00
5
0.039
1,00
5
0.028
0,70
6
8
9
0.080
2,03
1
0.590
14,99
0.050
1,27
Pri
4
1
Sec
7
6
0.530 max
13,46
1
10
Recommended
Land Pattern
0.098
2,50
0.098
2,50
Aux
2
Secondary windings to be connected
in parallel on the PC board
Dimensions are in
inches
mm
US
+1-847-639-6400 sales@coilcraft.com
UK
+44-1236-730595 sales@coilcraft-europe.com
Taiwan
+886-2-2264 3646 sales@coilcraft.com.tw
China
+86-21-6218 8074 sales@coilcraft.com.cn
Singapore
+ 65-6484 8412 sales@coilcraft.com.sg
Document 523
Revised 10/29/08
© 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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