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NA5743-AL Flyback Transformer

for Linear Technology LT8584

RoHS compliant AEC-Q flag
  • Developed for Linear Technology LT8584 Isolated Monolithic Active Cell Balancer
  • Input: 2 – 8 V; Outputs: 10 – 35 V, 30 – 80 V and 100 – 400 V
  • AEC-Q200 Grade 1 (−40°C to +125°C)
Buy Now:
Count Unit price
1 $3.10
200 $3.15
600 $1.90
1200 $1.62
2400 $1.40

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

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

Typical Application

Works with ADIPowerbyLinear LT8584

Input Voltage Output Power Fsw
2 V 8 V 80 V 12 W 150 kHz


Electrical specifications at 25°C.

Part number 1
(Hover for schematics)
at 0A (µH)
(Tolerance: ±10%)
min at   7 A (µH) 2
DCR max (Ω) 3 Leakage
max (µH) 4
Turns Ratio 5 Isolation
Voltage (Vrms) 6
Pri Sec Pri : Sec
NA5743-AL_ 4.0 3.6 0.012 0.500 0.116 1 : 4 1500
  1. When ordering, please specify packaging code: e.g. NA6252-ALD
  2. Peak primary current drawn at minimum input voltage.
  3. DCR for the primary is with the windings connected in parallel, measured at 25°C. For other operating temperatures, use this DCR at Temperature calculator.
  4. Inductance is for the primary, measured at 150 kHz, 0.1 Vrms, 0 Ad.
  5. Turns ratios are with the primary windings connected in parallel.
  6. 1500 Vrms, one minute isolation from primary to secondary windings.


  • RoHS-compliant. Tin-silver (96.5/3.5) over tin over nickel over phos bronze terminations. Other terminations available at additional cost.


  • D = 13″ machine-ready reel. EIA-481 embossed plastic tape (200 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.
RoHS compliant
Ambient temperature range:
–40°C to +125°C
Storage temperature range:
e Component: –40°C to +125°C
Tape and reel packaging: –40°C to +80°C
Maximum part temperature:
+125°C (ambient + temp rise)
Failures in Time (FIT) / Mean Time Between Failures (MTBF):



Primary 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 part_or_c-(1).gif
200 330 100 13 38,4 32,4 32 24 4 2 11,2 0,5

General specification

Core Material:
3.9 – 4.2 g
200 per 13″ reel Plastic tape: 32 mm wide, 0.5 mm thick, 24 mm pocket spacing, 11.2 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 to MIL-STD-202 Method 215 plus an additional aqueous wash.  More info.