Document 853

Flyback Transformers

For Akros AS1135
PoE Controller• Flyback transformers for IEEE802.3at PoE applications• Input voltage GA3568: 36 – 57 V; HA3809: 10 – 57 V
• 1500 Vrms, one minute isolation from primary and bias tosecondary and sync windings.

Core material Ferrite
Terminations RoHS tin-silver (96.5/3.5) over tin over nickel over phosbronze. Other terminations available at additional cost.
Weight 11.4 – 11.8 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)
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 to MIL-STD-202 Method 215 plus an additionalaqueous wash. See Doc787_PCB_Washing.pdf.		
Partnumber1Inductance Inductance		
DCR max (Ohms)4at 0 A2at Ipk3
±10% (µH) min (µH) pri   sec   bias   sync

GA3568-DL_
HA3809-AL_

60305425

Leakageinductance5max (µH)

0.132 0.0055 0.220 0.200
0.042 0.010 0.165 0.165

1.20
0.680

Turns ratios6	 Ipk3
pri : sec pri : bias pri : sync (A)Output7
1 : 0.167
1 : 0.176

1 : 0.29
1 : 0.29

1 : 0.29
1 : 0.29

1. When ordering, please specify termination and packaging codes:
1128
10

3

108Pri

SecPriSec

1259711159711BiasSync

BiasSync

612612

Primary windings and secondarywindings each to be connected inparallel on PC board.

Secondary windings to beconnected in parallel on
PC board.

10.93023,62GA3568-DL

XXXXY

60.810 max
20,57
7

1.181 max
30,00

Parts manufactured priorto December 2011 may
be marked differently.
0.425 max
10,80
0.004 /0,10

0.827
21,00
0.969
24,60

HA3809-AL

43

3.3 V, 9.1 A
3.3 V, 9.1 A

Dot indicates pin 1

HA3809-ALD
Termination: L = RoHS tin-silver (96.5/3.5) over tin over nickel over phos bronze.
Special order: T = RoHS tin-silver-copper (95.5/4/0.5) orS = non-RoHS tin-lead (63/37).
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 with leader
and trailer ($25 charge).
B = Less than full reel. In an effort to simplify our part numbering system, Coilcraft iseliminating the need for 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 300 kHz, 0.7 Vrms. For the GA3568-DL inductance is per winding.
3. Peak primary current drawn at minimum input voltage.
4. DCR for the secondary is with the windings connected in parallel. For GA3568-DL DCR for the primaryis with both windings connected in parallel.
5. Leakage inductance is for the primary windings with the secondary windings shorted.
6. Turns ratios are for the primary (windings connected in parallel for the GA3568-DL) and with the secondary windings connected in parallel.
7. Output of the secondary is with the windings connected in parallel. Bias winding output is 5 V, 20 mA.
8. Electrical specifications at 25°C.
Refer to Doc 362 “Soldering Surface Mount Components” before soldering.

GA3568-DL

2.6
3.9

0.050
1,270.080
2,03

76

0.028
0,711

Recommended
Land Pattern
0.130
3,30

10.1183,0inches
Dimensions are inmm

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

Document 853

120.118
3,0Revised 05/18/10© 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.