Coilcraft Flyback Transformers for LT3751 Capacitor Charger Controller
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Flyback Transformers for
Linear Technology LT3751

  • Designed for use with Linear Technology LT3751 Capacitor Charger Controller
  • For charging capacitors to 500 V
  • GA3459-BL: 5 – 24 V input
    GA3460-BL: 12 – 24 V input
  • 1500 Vrms, one minute interwinding isolation
  • Coilcraft DA2033-AL and DA2034-AL are specified for 5 A and 10 A applications
  • RoHS-compliant. 260°C compatible. Tin-silver (96.5/3.5) over tin over nickel over phos bronze terminations
  • COTS Plus tin-silver-copper and tin-lead terminations available


Part number
Click to get parts
at 0 A1
±10% (µH)
at Ipk2
min (µH)
DCR max (mOhms)3 Leakage
max (µH)
Turns ratio
pri : sec
pri sec
GA3459-BL 5.0 4.25 7.70 515 0.10 1 : 10 20
GA3460-BL 2.5 2.25 5.63 400 0.06 1 : 10 50
1 Inductance is for the primary, measured at 10 kHz, 0.1 Vrms, 0 Adc.
2 Ipk is peak primary current drawn at minimum input voltage.
3 DCR for the primary is with the windings connected in parallel. DCR at 25°C. For other operating temperatures, use this DCR at Temperature calculator.
4 Leakage inductance is for the primary with windings connected in parallel and with the secondary winding shorted.
5 Ambient temperature range: −40°C to +125°C
6 Storage temperature range: Component: −40°C to +125°C
Packaging trays: −40°C to +80°C
7 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.
8 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