Coilcraft GA3502 Flyback Transformer for Maxim's PFC LED Driver
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Flyback Transformer for
Maxim Off-Line LED Driver

  • Featured on Maxim MAX16801 demonstration board
  • Designed for PWM Dimming of High-Brightness LEDs
  • 400 V input; 100 V, 0.4 A output
  • 18 V, 20 mA bias winding output
  • 1500 Vrms, one minuteisolation, primary and bias windings to secondary winding
  • RoHS-compliant. 260°C compatible. Tin-silver (96.5/3.5) over tin over nickel over phos bronze terminations


Part number1
Click to get parts
at 0 A2
±10% (µH)
at Ipk3
min (µH)
DCR max4
max (µH)
Turns ratio Ipk3
pri : sec pri : bias
GA3502-BL 800 720 pri: 
6.60 1 : 0.35 1 : 0.06 0.75 110 V, 0.4 A
1 When ordering, please specify termination code: e.g. GA3502-BL
  Termination: L = RoHS compliant tin-silver over tin over nickel over phos bronze
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 (pins 1 – 3), measured at 250 kHz, 0.3 Vrms.
3 Ipk: Peak primary current drawn at minimum input voltage.
4 DCR for the primary is measured from pin 1 to pin 3.DCR measured at 25°C. For other operating temperatures, use this DCR at Temperature calculator.
5 Leakage inductance is for the primary winding (pins 1 – 3) with the secondary windings shorted.
6 Output is for the secondary. Bias winding output is 18 V, 20 mA.
7 Ambient temperature range: −40°C to +125°C
8 Storage temperature range: Component: −40°C to +125°C
Packaging trays: −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: August 31, 2018