YA9280 Flyback Transformer for MAX17690 | Coilcraft
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No-Opto Flyback Transformer

  • Optimized for Maxim's MAXREFDES1226 reference design and
    MAX17690 No-Opto Isolated Flyback Controllers
  • Designed for discontinuous conduction mode 17 – 36 V input
  • 1500 Vrms, 1 minute isolation (hipot) between primary to secondary
  • RoHS-compliant. 260°C compatible. Tin-silver-copper over tin over nickel over phos
    bronzes terminations.


Part number1
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L at 
0 Adc2
 ±10% (µH)
L at
2.6 Adc3
min (µH)
DCR max
max (µH)
Turns ratio Isolation6
pri sec pri : sec
YA9280-ALD 18 15.3 3.75 0.101 0.027 0.572 1 : 0.4 1500 5 V, 1.5 A
1 Packaging: D = 13" machine-ready reel
EIA 481 embossed plastic tape. Quantities less than full reel available: in tape (not machine ready) or with leader and trailer ($25 charge).
2 Inductance is for the primary, measured at 150 kHz, 0.1 Vrms, 0 Adc.
3 Minimum inductance is for the primary, measured at 150 kHz, 0.1 Vrms, 2.6 Adc.
4 Isat: DC current that causes an inductance drop of 30% (typ) from its value without current.
5 Leakage inductance is for the primary winding with the secondary windings shorted.
6 Isolation (hipot) measured between windings for one minute.
7 Ambient temperature range: −40°C to +125°C
8 Storage temperature range: Component: −40°C to +125°C
Tape and reel packaging: −40°C to +80°C
9 Resistance to soldering heat: Three reflows at >217°C for 90 seconds (+260°C ±5°C for 20 – 40 seconds), allowing parts to cool to room temperature between.
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: March 26, 2020