Document 510-1 For Linear Technology LT3750/LT3751 Flyback Transformers Capacitor Charger Controllers These surface mount flyback transformers were devel - oped for use with Linear Technology LT3750 Capacitor Charger Controller. DA2033-AL and DA2034-AL are also specified for the LT3751 Controller. They have a smaller footprint than other transformers designed for this application. These low-profile transformers feature 1500 Vrms, one minute winding to winding isolation and 750 Vrms winding to core isolation. They are designed to operate with an input range of 3 24 V and to charge a capacitor to 300 V. They are shown on the Linear Technology LT3750 ap- plication 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). Coilcraft can also custom engineer a transformer to meet your specific requirements. For free evaluation samples, contact Coilcraft or visit www.coilcraft.com. Inductance Inductance Leakage Interwinding 2 3 DCR max (Ohms) 5 3 6 Part at 0 A at Ipk inductance Ipk capacitance Turns ratio 1 4 number 10% (H) min (H) pri sec max (H) (A) (pF) pri : sec DA2032-AL 10.0 9.0 0.013 1.60 0.150 3.0 67 1 : 10 DA2033-AL 10.0 9.0 0.015 1.10 0.144 5.0 76 1 : 10 DA2034-AL 10.0 9.0 0.018 1.75 0.250 10.0 128 1 : 10 1. When ordering, please specify packaging code: Core material Ferrite DA2034-ALD Terminations RoHS compliant tin-silver over tin over nickel over phos bronze. Other terminations available at additional cost. Packaging: D = 13 machine-ready reel. EIA-481 embossed plastic tape (DA2032-AL & DA2033-AL: 200 parts per full reel Weight DA2032: 5.9 g DA2033: 8.2 g DA2034: 14.1g DA2034-AL: 175 parts per full reel). Quantities less than full reel available: in tape (not machine ready) or Ambient temperature 40C to +125C with leader and trailer ( 25 charge). Storage temperature Component: 40C to +125C. B = Less than full reel. In an effort to simplify our part Tape and reel packaging: 40C to +80C numbering system, Coilcraft is eliminating the need for multiple packaging codes. When ordering, simply Resistance to soldering heat Max three 40 second reflows at change the last letter of your part number from B to D. +260C, parts cooled to room temperature between cycles 2. Inductance is for the primary, measured at 100 kHz, 0.1 Vrms, 0 Adc. 3. Peak primary current drawn at minimum input voltage. Moisture Sensitivity Level (MSL) 1 (unlimited floor life at <30C / 4. DCR is with the primary windings connected in parallel. 85% relative humidity) 5. Leakage inductance is with the primary windings connected in parallel Packaging and with the secondary winding shorted. 6. Capacitance measured at 100 kHz, 0.1 Vrms from pin 3 to pin 1 with all DA2032-AL 200 per 13 reel. Plastic tape: 44 mm wide, 0.4 mm other pins shorted. thick, 28 mm pocket spacing, 9.6 mm pocket depth 7. Electrical specifications at 25C. DA2033-AL 200 per 13 reel. Plastic tape: 44 mm wide, 0.4 mm thick, 24 mm pocket spacing, 10.56 mm pocket depth 10 DA2034-AL 175 per 13 reel. Plastic tape: 44 mm wide, 0.4 mm 9 8 thick, 32 mm pocket spacing, 11.9 mm pocket depth 7 12 PCB washing Tested with pure water or alcohol only. For other solvents, Primary see Doc787 PCB Washing.pdf. Secondary 6 1 5 4 3 Primary windings to be connected in parallel on PC board Document 510-1 Revised 11/18/21 US +1-847-639-6400 sales coilcraft.com UK +44-1236-730595 sales coilcraft-europe.com Coilcraft Inc. 2021 This product may not be used in medical or high Taiwan +886-2-2264 3646 sales coilcraft.com.tw risk applications without prior Coilcraft approval. China +86-21-6218 8074 sales coilcraft.com.cn Specification subject to change without notice. Singapore + 65-6484 8412 sales coilcraft.com.sg Please check web site for latest information.Document 510-2 Flyback Transformers for Linear LT3750 Dot indicates pin 1 0.135 0.665 0.070 0.028 DA2032-AL 3,43 16,88 1,79 0,72 1 1 12 DA2032-AL 0.677 max 17,20 XXXXY 6 7 0.098 0.098 Recommended 2,5 2,50 0.865 max Land Pattern 21,97 0.350 max 8,89 0.004/0,10 0.590 14,98 0.079 0.693 2,01 17.60 Dot indicates pin 1 0.130 0.748 0.028 0.070 DA2033-AL 3,30 19,0 0,711 1,79 1 1 12 DA2033-AL 0.685 max 17,40 XXXXY 6 7 0.100 0.100 Recommended 2,54 2,54 0.950 max Land Pattern 24,13 0.385 max 9,78 0.004/0,10 0.699 17,0 0.075 0.799 1,915 20,3 Dot indicates pin 1 0.130 0.930 DA2034-AL 0.028 0.050 3,30 23,62 0,711 1,27 1 12 1 DA2034-AL 0.810 Recommended max 20,57 Land Pattern XXXXY 6 7 0.118 0.118 3,00 3,0 1.181 max Internal code 30,00 Parts manufactured prior to September 2011 maybe marked differently. 0.450 max 11,43 0.004/0,10 0.827 21,00 0.080 0.969 inches Dimensions are in 2,03 24,60 mm Document 510-2 Revised 11/18/21 US +1-847-639-6400 sales coilcraft.com UK +44-1236-730595 sales coilcraft-europe.com Coilcraft Inc. 2021 This product may not be used in medical or high Taiwan +886-2-2264 3646 sales coilcraft.com.tw risk applications without prior Coilcraft approval. China +86-21-6218 8074 sales coilcraft.com.cn Specification subject to change without notice. Singapore + 65-6484 8412 sales coilcraft.com.sg Please check web site for latest information.