Document 1363

Flyback Transformers

For TI TPS23753A PoE Interfaceand Converter Controller• For TI TPS23753A IEEE802.3 PoE Interface and ConverterController• Developed for TI PMP9068 Class 1 Isolated Synchronous
Flyback Converter for PoE PD Application Reference Design• 1500 Vrms, one minute isolation primary and bias to secondaryand drive windingsCore material Ferrite
Terminations RoHS tin-silver-copper over tin over nickel over phosbronze.
Weight 2.1 g
Ambient temperature –40°C to +125°C
Maximum part temperature +135°C
Storage temperature Component: –40°C to +135°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 350 per 13″ reel Plastic tape: 32 mm wide,
0.45 mm thick, 20 mm pocket spacing, 9.35 mm pocket depth
PCB washing Tested to MIL-STD-202 Method 215 plus an additionalaqueous wash. See Doc787_PCB_Washing.pdf.		 L at 0 A2
Part±10%
number1(µH)

L at Ipk3					  DCR max (Ohms)		
min		(µH)
prisec drive bias

Leakage L4max (µH)
pri  drive

Turns ratio
pri: sec pri : drive pri : bias

Ipk3
(A)

Output5

PA6595-AL_279.0

4.10

1 : 0.14

0.3

3.3 V, 0.9 A

310

1.14 0.025

0.282

1.58

1. When ordering, please specify packaging code:
PA6595-ALD
Packaging: D = 13″ machine ready reel. EIA-481 embossed plastictape (350 per full reel). Quantities less than full reelavailable: in tape (not machine ready) or with leader
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.
Internal code
5XXXX Y10.1042,65PA6595-AL

40.430
max
10,92

0.098
2,50

0.370
9,40

Recommended
Land Pattern

0.028
0,70

1 : 0.21

1: 0.465

2. Inductance is for the primary, measured at 250 kHz, 0.1 Vrms.
3. Peak primary current drawn at minimum input voltage.
4. Leakage inductance for the primary is with the secondary and drive
windings shorted; leakage inductance for the drive winding is with thesecondary windings shorted.
5. Output is of the secondary winding. Output of the bias winding is 12 V,
20 mA. Output of the drive winding is 5 V, 50 mA
6. Electrical specifications at 25°C.
Refer to Doc 362 “Soldering Surface Mount Components” before soldering.

0.098
2,5018Dot indicates pin10.200.050
1,27

3Primary(36 – 57 Vdc)

6Secondary(3.3 V, 0.9 A)

452Bias(12 V, 20 mA)

8

1Drive(5 V, 50 mA)
70.355max
9,020.041
1,050.339
8,60
0.520
max
13,210.004 /0,10

Dimensions are ininchesmm

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 1363

Revised 01/03/17© Coilcraft Inc. 2021
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.