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Document 788
Flyback Transformers ForSTMicroelectronics PM8803
PoE Plus Powered Device Controller
• Designed to operate at 250 kHz in continuous conduction
mode with 42 – 57 Volts input
• 1500 Vrms, one minute isolation from the primary and bias
windings to the secondary windings
Core material Ferrite
Terminations  RoHS tin-silver over tin over nickel over phos bronze.
Other terminations available at additional cost.
Weight  6.5 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)
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:  32 mm wide,
0.5 mm thick, 28 mm pocket spacing, 12.93 mm pocket depth
PCB washing  Only pure water or alcohol recommended
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Ipk3
(A)
HA3691-AL_ 20
JA4173-AL_ 20
100
100
90.0 0.185 0.0085 0.340 0.805
90.0 0.211 0.0060 0.404 1.60
1 : 0.25   1 : 0.469 1.3
1 : 0.156 1 : 0.50 1.3
1. When ordering, please specify packaging code:
HA3691-ALD
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 measured at 250 kHz, 0.2 Vrms, 0 Adc.
3. Peak primary current drawn at minimum input voltage.
4. DCR for the secondary is with windings connected in parallel.
5. Leakage inductance is for the primary and is measured with the secondary shorted.
6. Turns ratio is with the secondary windings connected in parallel.
7. Output of the secondary is with the windings connected in parallel. Bias winding output
is 10 V, 20 mA.
8. Electrical specifications at 25°C.
Refer to Doc 362 “Soldering Surface Mount Components” before soldering.
0.500
12,70
max
0.039
1,00
Dot above pin1
0.699
17,75
max
Output7
5 V,  4 A
3.3 V,  6 A
0.004 /0,10
0.080
2,03
0.590
14,99
0.050
1,27
0.512
13,00
0.028
1 10 0,70
Recommended
Land Pattern
0.530
13,46
max
Secondary windings to be connected
in parallel on PC board
1
0.098
2,50
5
Dimensions are in
inches
mm
6
0.098
2,50
ThesUeSpa+r1ts-8a4re7-p6r3e9p-r6o4d0u0ctiosnaplerosd@uccotsilcforarfet.lceoctmrical evaluation only.
UK +4S4p-1e2c3ifi6c-a7t3io0n5s9u5bjescatletos@chcaonilgcerawfti-theouurot pneo.tcicoem.
Document 788  Revised 03/31/11
© Coilcraft Inc. 2013
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
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.