C1023-AL

Document 423
PoE Transformer
For National Semiconductor
LM5070 PoE Interface
• Developed for the NSC LM5070 PD Interface in 13 W applications.
• Operates at frequencies up to 1 MHz
• Input: 36 – 72 V; Output: 3.3 V, 4.5 A, with secondary windings
connected in parallel
• Isolation:1500 Vrms from the primary and auxiliary windings
to the secondary.
Core material Ferrite
Terminations RoHS tin-silver (96.5/3.5) over tin over nickel over phos
bronze. Other terminations available at additional cost.
Weight 12.4 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)
Mean Time Between Failures (MTBF) / Failures in Time (FIT)
26,315,789 hours / 38 per billion hours, Calculated per Telcordia SR-322
Packaging 175 per 13″ reel Plastic tape: 44 mm wide, 0.4 mm thick,
32 mm pocket spacing, 11.9 mm pocket depth
PCB washing Tested with pure water or alcohol only. For other solvents,
see Doc787_PCB_Washing.pdf
4
6
Capacitance7 Ipk3 Isolation8
Part L at 0 A2 L at Ipk3 DCR max (Ohms) Leakage Turns ratio
L (µH)5pri : sec pri : aux
number1 ±10% (µH) ±10% (µH) pri
aux
sec
(pF) (A)(Vrms)
C1023-AL_
110
99.0
0.139
0.656
0.016
1. When ordering, please specify a packaging code:
C1023-ALD
Packaging:D =13″ machine ready reel. EIA-481 embossed plastic
tape (175 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 is for the primary, measured at 10 kHz, 0.1 Vrms, 0 Adc.
3.Ipk is the peak current drawn at minimum input voltage.
Dot indicates pin 1
1
12
0.130
3,30
6
1
0.050
1,27
Recommended
Land Pattern
7
1.181 max
30,00
1 : 0.19 1 : 0.69
0.827
21,00
0.969
24,60
1.5
1500
4
12
11
10
Pri
Sec
6
9
8
7
1
0.118
3,0
0.118
3,0
Aux
3
Parts manufactured prior
to December 2011 may
be marked differently.
Secondary windings to be connected
in parallel on PC board.
0.450
max
11,43
0.080
2,03
70
4. DCR for the secondary is per winding.
5. Leakage inductance is for the primary winding with all other pins
shorted.
6. Turns ratio is with the secondary windings connected in parallel.
7. Capacitance measured between pins 3 and 4 with other pins shorted.
8. Isolation is measured from the primary and aux to the secondary.
9. Electrical specifications at 25°C.
Refer to Doc 362 “Soldering Surface Mount Components” before soldering.
0.930
23,62
C1023-AL
XXXXY
0.810
max
20,57
0.028
0,711
1.40
0.004 /0,10
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 423 Revised 12/21/11
© 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.
Similar pages