WA8478 Transformer for Analog Devices ADP1031 | Coilcraft
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Flyback Transformer for 
Analog Devices ADP1031

  • Developed for use with isolated DC-DC regulator in Analog Devices ADP1031 isolated micropower management unit (PMU)
  • Input voltage range: 4.5 – 60 V
  • 2250 Vrms, one minute isolation (hipot) between primary and secondary windings
  • RoHS-compliant, halogen free. 260°C compatible. Tin-silver-copper over tin over nickel over phos bronze terminations


Part number1
Click to get parts
at 0 A
±10% (µH)
at 0.15 A
min (µH)
max (µH)
DCR max
pri sec pri : sec
WA8478-BE_ 4.5 – 60 275 220 1.2 1.2 2.46 1 : 1 2250 24 V, 20 mA
1 When ordering, please specify packaging code: e.g.WA8478-BEC
  Packaging: C = 7" 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).
= 13" machine-ready reel
EIA 481 embossed plastic tape. Factory order only, not stocked (750 parts per full reel).
2 Inductance is for the primary, measured at 100 KHz, 0.1 Vrms, 0 Adc.
3 Minimum inductance is for the primary, measured at 100 KHz, 0.1 Vrms, 0.15 Adc.
4 Leakage inductance is for the primary with secondary winding shorted together.
5 Isolation (hipot) measured between windings for one minute.
6 Ambient temperature range: −40°C to +125°C
7 Maximum part temperature: +165°C (ambient + temperature rise)
8 Storage temperature range: Component: −40°C to +165°C
Tape and reel packaging: −40°C to +80°C
9 Resistance to soldering heat: Max three 40 second reflows at +260°C allowing parts to cool to room temperature between cycles.
10 Electrical specifications at 25°C.
Refer to Soldering Coilcraft Components before soldering.
PCB washing: Tested to MIL-STD-202 Method 215 plus an additional aqueous wash. More info.

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Updated: April 16, 2019