HA4060-AL Flyback Transformer for LT3751 | Coilcraft
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Flyback Transformer for
Linear Technology LT3751

  • Developed for Linear Technology LT3751 Capacitor Charger Controller
  • 3000 Vrms isolation from primary to secondary windings
  • Input: 120 – 377 V
  • Output: up to 500 V
  • RoHS-compliant. Tin-silver (96.5/3.5) over tin over nickel over phos bronze terminations


Part number1
Click to get parts
at 0A2
±10% (µH)
at Ipk3
min (µH)
DCR max4
max (µH)
Turns ratio6
pri : sec
typ (Vµsec)
pri sec
HA4060-AL 300 270 0.422 1.58 2.7 1 : 3 2.0 600
1 When ordering, please specify termination code: e.g. HA4060-AL
  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
= non-RoHS tin-lead (63/37).
2 Inductance is for the primary, measured at 100 kHz, 0.1 Vrms, 0 Adc using an Agilent/HP 4263B impedance analyzer or equivalent.
3 Ipk: Peak primary current drawn at minimum input voltage.
4 DCR is at 25°C with the windings connected in parallel. For other operating temperatures, use this DCR at Temperature calculator.
5 Leakage inductance is for both windings of the primary with the secondary windings shorted.
6 Turns ratios are with the primary and secondary windings connected in parallel.
7 Ambient temperature range: −40°C to +85°C
8 Storage temperature range: Component: −40°C to +85°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: April 16, 2018