DA2032_13 Datasheet, PDF (1/2 Pages) Coilcraft lnc. – Flyback Transformers

Document 510-1
Flyback Transformers For Linear Technology LT3750/LT3751
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.

Part
  _number1
DA2032-AL_
DA2033-AL_
DA2034-AL_
Inductance Inductance
  _{at 0 A}2   _{at Ipk}3
DCR max (Ohms)
±10% (µH) min (µH)
pri⁴    sec
10.0
9.0
0.013
1.60
10.0
9.0
0.015
1.10
10.0
9.0
0.018
1.75
Leakage Interwinding
inductance^{5  } Ipk^{3  } capacitance⁶
max (µH)
(A)
(pF)
0.150
0.144
0.250
3.0
67
5.0
76
10.0
128
Turns ratio
pri : sec
1 : 10
1 : 10
1 : 10
1. When ordering, please specify packaging code:
DA2034-ALD
Packaging: D = 13″ machine-ready reel. EIA-481 embossed plastic
tape (DA2032-AL & 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 with the primary windings connected in parallel.
5. Leakage inductance is with the primary windings connected in parallel
and with the secondary winding shorted.
6. Capacitance measured at 100 kHz, 0.1 Vrms from pin 3 to pin 1 with all
other pins shorted.
7. Electrical specifications at 25°C.
10
9
8
7
12
Primary
Secondary
6
1
5
4
3
Primary windings to be connected
in parallel on PC board
Core material Ferrite
Terminations  RoHS compliant tin-silver over tin over nickel over
phos bronze. Other terminations available at additional cost.
Weight  DA2032: 5.9 g;  DA2033: 8.2 g;  DA2034: 14.1g
Ambient temperature  –40°C to +125°C
Storage temperature  Component: –40°C to +125°C.
Tape and reel packaging: –40°C to +80°C
Resistance to soldering heat  Max three 40 second reflows at
+260°C, parts cooled to room temperature between cycles
Moisture Sensitivity Level (MSL)  1 (unlimited floor life at <30°C /
85% relative humidity)
Failures in Time (FIT) / Mean Time Between Failures (MTBF)
38 per billion hours / 26,315,789 hours, calculated per Telcordia SR-332
Packaging 
DA2032-AL  200 per 13″ reel. Plastic tape:  44 mm wide, 0.4 mm
thick, 28 mm pocket spacing, 9.6 mm pocket depth
DA2033-AL  200 per 13″ reel. Plastic tape:  44 mm wide, 0.4 mm
thick, 24 mm pocket spacing, 10.56 mm pocket depth
DA2034-AL  175 per 13″ reel. Plastic tape:  44 mm wide, 0.4 mm
thick, 32 mm pocket spacing, 11.9 mm pocket depth
PCB washing  Tested with pure water or alcohol only. For other solvents,
see Doc787_PCB_Washing.pdf.
US [phone] [e-mail]
UK [phone] [e-mail]
Taiwan [phone] [e-mail]
China [phone] [e-mail]
Singapore + 65-6484 8412 [e-mail]
Document 510-1  Revised 02/09/11
© Coilcraft Inc. 2013
This product may not be used in medical or high
risk applications without prior Coilcraft approval.
Specification subject to change without notice.
Please check web site for latest information.