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MA5281_14

更新时间: 2024-11-08 01:13:31
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线艺 - COILCRAFT /
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描述
Flyback Transformer

MA5281_14 数据手册

  
Document 1053  
For TI TPS23756  
Flyback Transformer 15 W PoE Converter  
• Flyback for Texas Instruments TPS23756 Wide Input Range  
15 W PoE Converter; shown on PMP6659 schematic and BOM  
• Input: 10.8 – 57 V  
• 1500 Vrms, one minute isolation from primary and bias to  
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 11.3 g  
Ambient temperature –40°C to +125°C  
Storage temperature Component: –40°C to +125°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 13reel Plastic tape: 44 mm wide,  
0.4 mm thick, 28 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.  
L at0A2 LatIpk3  
DCR max (Ohms)4  
sec bias drive max (µH) pri:sec pri:bias pri:drive  
0.060 0.058 0.370 0.323 0.550 1 : 0.57 1 : 0.57 1 : 0.52  
Turns ratio6  
Part  
10ꢀ  
(µH)  
min  
Leakage L5  
Ipk3  
number1  
(µH)  
pri  
(A)  
Output7  
MA5281-BL_ 45  
40.5  
2.8  
12 V, 1.25 A  
1. When ordering, please specify a packaging code:  
MA5281-BLD  
4. DCR for the primary and the secondary is measured with windings  
connected in parallel.  
5. Leakage inductance is for the primary, measured with the windings  
connected in parallel and the secondary windings shorted.  
6. Turns ratio is with the primary windings and secondary windings con-  
nected in parallel.  
7. Output is with the secondary windings connected in parallel. Output of the  
drive winding is 11 V, 15 mA. Output of the bias winding is 11.5 V, 15 mA.  
8. Electrical specifications at 25°C.  
Packaging: D = 13machine 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.  
2. Inductance is measured at 250 kHz, 0.1 Vrms, 0 Adc.  
3. Peak primary current drawn at minimum input voltage.  
Refer to Doc 362 “Soldering Surface Mount Components” before soldering.  
Dot indicates pin 1  
1
12  
11  
3
4
12  
1
12  
0.118  
3,00  
0.028  
0,70  
Pri  
Sec  
0.810  
20,57  
Recommended  
Land Pattern  
max  
0.050  
1,27  
0.118  
3,00  
9
10  
6
5
8
1
Bias  
2
0.930  
23,62  
0.130  
3,3  
0.827  
21,0  
Drive  
7
Primary windings and secondary  
windings to be connected in parallel  
on PC board  
0.425  
10,80  
max  
0.004 / 0,10  
0.969  
24,6  
inches  
mm  
1.181  
Dimensions are in  
max  
30,00  
Document 1053 Revised 05/01/13  
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  
© Coilcraft Inc. 2014  
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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