Coilcraft GA3366-BL Flyback Transformer for ON Semiconductor NCP1606
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SMT Flyback Transformer for ON Semiconductor NCP1606

  • Developed for ON Semiconductor NCP1606 PFC Controller
  • Designed for 90 W application
  • 85 – 265 Vac input; 19.5 V, 4.62 A output
  • 3000 Vrms primary and auxiliary to secondary isolation
  • RoHS-compliant. Tin-silver (96.5/3.5) over tin over copper terminations


Part number1
Click to get parts
at 0 A2
±10% (µH)
at Ipk3
min (µH)
DCR max4
max (µH)

Turns ratio

pri : aux pri : sec
GA3366-BL 300 270 0.210 (pri)
0.073 (aux)
0.0053 (sec)
7.45 1 : 0.118 1 : 0.147 3.1 19.5 V, 4.62 A
1 When ordering, please specify termination code: e.g. GA3366-BL
Termination: L = RoHS compliant tin-silver over tin over copper
Special order, added cost: T = RoHS tin-silver-copper (95.5/4/0.5) or
S = non-RoHS tin-lead (63/37).
2 Inductance is for the primary, measured at 100 kHz, 1.0 Vrms, 0 Adc using an Agilent/HP 4263B impedance analyzer or equivalent.
3 Ipk: Peak primary current drawn at minimum input voltage.
4 DCR for the secondary is with windings connected in parallel. DCR at 25°C. For other operating temperatures, use this DCR at Temperature calculator.
5 Leakage inductance is for the primary winding with the secondary windings shorted.
6 Output is with the secondary windings connected in parallel. Output of the auxiliary winding is 16 V, 20 mA.
7 Ambient temperature range: −40°C to +85°C
8 Storage temperature range: Component: −40°C to +85°C
Tray packaging: −40°C to +80°C
9 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, 2018