Document 1134
For STMicroelectronics
Flyback Transformer STEVAL-ILL055V1
• Developed for STMicroelectronics STEVAL-ILL055V1 offline
LED drive
• Input voltage: 185 – 264 Vac
• 1500 Vrms, one minute isolation from the primary and aux
windings to the secondary winding
Core material Ferrite
Terminations RoHS tin-silver over tin over nickel 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 additional
aqueous wash. See Doc787_PCB_Washing.pdf.
Inductance
at 0 A2
±±0ꢀ (mꢁ)
Leakage
inductance4
max (µꢁ)
DCR max (Ohms)3
Turns ratio
pri : sec pri : aux
Part
Power
(W)
number1
pri
sec
aux
Output5
PA6284-AL_
11
1.40
3.03 0.085
0.57
25
1 : 0.136
1 : 0.144
12 – 18 V, 0.64 A
1. When ordering, please specify packaging code:
PA6284-ALD
Packaging: D = 13″ machine-ready reel. EIA-481 embossed plastic tape (175 parts
Dot above pin1
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 100 kHz, 1.0 Vrms, 0 Adc.
3. DCR for the secondary is with windings connected in parallel.
4. Leakage inductance is for the primary and is measured with the secondary shorted.
5. Output is of the secondary winding. Aux winding output is 20 V, 10 mA.
6. Electrical specifications at 25°C.
0.500
12,70
max
0.004/0,10
0.039
1,00
Refer to Doc 362 “Soldering Surface Mount Components” before soldering.
0.699
17,75
max
0.050
1,27
0.512
13,00
6
5
0.080
2,03
0.590
14,99
0.028
Primary
0,70
Secondary
10
10
1
3
Recommended
Land Pattern
0.530
13,46
max
2
Aux
1
5
0.098
2,50
6
1
0.098
2,50
inches
Dimensions are in
mm
These parts are preproduction products for electrical evaluation only.
Specification subject to change without notice.
Document 1134 Revised 09/16/14