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Cx Family Common Mode Chokes
0402CT Low Profile Chip Inductors
XAL7050 High-inductance Shielded Power Inductors
XGL4020 Ultra-low DCR Power Inductors

Flyback Transformer

for Texas Instruments LM5071

RoHS compliant
  • Developed for Texas Instruments LM5071PD Controller
  • Offers 84% efficiency as specified in Texas Instruments application note AN-1430
  • Designed to operate in continuous mode at 250 kHz with input voltage of 24 – 60 V
  • Industry standard EP13 surface mount package
  • Coilcraft's DA2257-AL and FA2519-AL are designed for the NSC LM5071 and LM5072
  • The FA2677-AL is specified by NSC for LM5072

Buy Now:
Count Unit price
1 $2.49
175 $2.14
700 $1.86
1400 $1.45
2800 $1.25
5000 $1.13

For high volume or non-stock items, request a quote.

. in stock, ready to ship today.
Request a Sample:

Typical Application

Works with Texas Instruments LM5071

Input Voltage Output Power Fsw
Sec Aux
24 V 60 V 3.3 V , 4 A 10 V , 0.05 A 13 W 250 kHz


Electrical specifications at 25°C.

Part number 1
(Hover for schematics)
at 0A (µH) 2
(Tolerance: ±10%)
min at   1 A (µH)
DCR max (Ω) 3 Leakage
max (µH) 4
Turns Ratio Isolation
Voltage (Vrms) 5
Pri Sec Aux Pri : Sec : Aux
DA2383-AL_ 127.0 114.3 0.255 0.012 0.310 1.25 1 : 0.167 : 0.5 1500
  1. When ordering, please specify packaging code: e.g. DA2383-ALD
  2. Inductance is for the primary, measured at 200 kHz, 0.2 Vrms, 0 Adc.
  3. DCR measured at 25°C. For other operating temperatures, use this DCR at Temperature calculator.
  4. Leakage inductance measured on the primary winding with all secondary pins shorted.
  5. 1500 Vrms, one minuteisolation from primary and aux to secondary.


  • RoHS-compliant. 260°C compatible. Tin-silver over tin over nickel over phos bronze terminations. Other terminations available at additional cost.


  • D = 13″ machine-ready reel. EIA-481 embossed plastic tape (175 parts per full reel). Quantities less than full reel available: in tape (not machine ready) or with leader and trailer ($25 charge).
  • B = Less than full reel. In an effort to simplify our part numbering system, Coilcraft is eliminating the need for multiple packaging codes. When ordering, simply change the last letter of your part number from B to D.
RoHS compliant
Ambient temperature range:
–40°C to +85°C
Storage temperature range:
Component: –40°C to +85°C.
Tape and reel packaging: –40°C to +80°C
Failures in Time (FIT) / Mean Time Between Failures (MTBF):



Secondary windings to be connected
in parallel on the PC board

Physical characteristics



Tape and Reel specification


Parts per reel


Reel dimensions (mm) Tape dimensions (mm) Orientation
13" (330 mm) A B C D E W P Po P1 H T da2383orientation.gif
175 330 100 13 38,4 32,4 32 28 4 2 12,93 0,5

General specification

Core Material:
5.97 g
175 per 13″ reel Plastic tape: 32 mm wide, 0.5 mm thick, 28 mm pocket spacing, 12.93 mm pocket depth


Moisture Sensitivity Level (MSL):
1 (unlimited floor life at <30°C / 85% relative humidity)
Resistance to soldering heat:
Max three 40 second reflows at +260°C, parts cooled to room temperature between cycles
Refer to Soldering Coilcraft Components before soldering.
PCB Washing:
Tested with pure water or alcohol only. More Info.

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