Document 1230

Flyback Transformer

For Texas Instruments
TPS23753A PoE controller• Flyback transformer for 10 W PoE applications• Developed to work with TI TPS23753A PoE controller• 1500 Vrms isolation (hipot), one minute from primary and bias
to secondary and sync
Core material Ferrite
Terminations RoHS tin-silver-copper (95.5/3.8/0.7) over tin overnickel over phos bronze.
Weight 6.2 g
Ambient temperature –40°C to +85°C
Maximum part temperature +125°C (ambient + temp rise)
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 13″ reel Plastic tape: 32 mm wide, 0.5 mm thick,
28 mm pocket spacing, 12.93 mm pocket depth
PCB washing Tested to MIL-STD-202 Method 215 plus an additionalaqueous wash. See Doc787_PCB_Washing.pdf.					 4DCR max (Ohms)
PartL at 0A2
L at Ipk3
number1 ±7% (µH) min (µH) pri   sec   bias   sync
PA6340-AL_133.0

123.7

0.330 0.0135 0.230

PA6340-ALD
Packaging: D = 13″ machine-ready reel. EIA-481 embossed plastic
tape (175 parts per full reel). Quantities less than full
reel available: in tape (not machine ready) or withleader and trailer ($25 charge).
B = Less than full reel. In an effort to simplify our partnumbering system, Coilcraft is eliminating the needfor multiple packaging codes. When ordering, simply
change the last letter of your part number from B to D.
2. Inductance is for the primary, measured at 1 kHz, 0.5 Vrms, 0 Adc.
0.028
0,70

1

Dot indicates pin1

XXXX X

0.530 max
13,46

6

1.50

70

3. Peak primary current (1.1 A) drawn at minimum input voltage.
4. DCR for the primary is from pin 1 to pin 2.
5. Leakage inductance measured between pins 1 and 2 with all otherwindings shorted.
6. Capacitance is measured from pins 1,2 to pins 6,10 at 250 kHz, 0.5 Vrms.
7. Turns ratio is with the primary windings connected in series.
8. Output is between pins 7 and 10. Bias winding output is 10 V, 20 mA.
Sync winding output is a 5 V Sync FET gate drive signal.
9. Electrical specifications at 25°C.
Refer to Doc 362 “Soldering Surface Mount Components” before soldering.

0.590
14,990.050
1,27

62
W1B

Sync

W557W1A

Internal code

Sec1010.098
2,50

10.0982,50Output8

1 : 0.167 : 0.361 : 0.167 5.0 V, 2.0 A

RecommendedLand Pattern
10Turns ratio7
pri : sec : bias : sync

6PriPA6340-AL

50.0802,03Capacitancemax (pF)

0.190

1. When ordering, please specify packaging code:

0.512
13,00

Leakageinductancemax (µH)53Bias

W3
40.500 max
12,70

0.039
1,000.004 /0,100.699 max
17,75

Dimensions are ininchesmm

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Singapore + 65-6484 8412 sales@coilcraft.com.sg

Document 1230

Revised 01/14/20© Coilcraft Inc. 2020
This product may not be used in medical or highrisk applications without prior Coilcraft approval.
Specification subject to change without notice.
Please check web site for latest information.