Flyback Transformers
for
Linear Technology LT3750 / LT3751
- Designed for use with Linear Technology LT3750 Capacitor Charger Controller
- Smaller footprint than other transformers for this application
- For charging capacitors to 300 V
- 3 – 24 V input
- Shown on LT3750 application note for use in a 300 V, 3 A charging circuit (DA2032); a 300 V, 6 A charging circuit (DA2033); and a 300 V, 9 A charging circuit (DA2034)
- 1500 Vrms primary to secondary isolation and 750 Vrms winding to core isolation, tested for one minute.
- DA2033-AL and DA2034-AL are also specified for the LT3751 Controller.
- RoHS-compliant. 260°C compatible. Tin-silver over tin over nickel over phos bronze terminations
SPECIFICATIONS
Dimensions
Tape and reel specifications 
Schematic 
3D models
| Part number1 Click to get parts |
L at 0A2 ±10% (µH) |
L at Ipk3 min (µH) |
DCR max (Ohms) | Leakage inductance5 max (µH) |
Turns ratio pri : sec |
Interwinding capacitance6 (pF) |
Ipk3 (A) |
|
|---|---|---|---|---|---|---|---|---|
| pri4 | sec | |||||||
| DA2032-AL_ | 10.0 | 9.0 | 0.013 | 1.60 | 0.150 | 1 : 10 | 67 | 3.0 |
| DA2033-AL_ | 10.0 | 9.0 | 0.015 | 1.10 | 0.144 | 1 : 10 | 76 | 5.0 |
| DA2034-AL_ | 10.0 | 9.0 | 0.018 | 1.75 | 0.250 | 1 : 10 | 128 | 10.0 |
| 1 | When ordering, please specify packaging code: e.g. DA2034-ALD | |
| Packaging: | D = 13"
machine-ready reel EIA 481 embossed plastic tape (DA2032-AL and DA2033-AL: 200 parts per full reel; DA2034-AL: 175 parts per full reel). B = Less than full reel In tape, but not machine-ready. To have a leader and trailer added ($25 charge), use code letter D instead. |
|
| 2 | Inductance is for the primary, measured at 100 kHz, 0.1 Vrms, 0 Adc | |
| 3 | Peak primary current drawn at minimum input voltage. | |
| 4 | DCR is at 25°C with the primary windings connected in parallel. For other operating temperatures, use this DCR at Temperature calculator. | |
| 5 | Leakage inductance is for the primary windings connected in parallel with the secondary windings shorted. | |
| 6 | Capacitance measured at 100 kHz, 0.1 Vrms from pin 3 to pin 1 with all other pins shorted. | |
| 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. | ||