NA5743-AL

Document 1075
Flyback Transformer
For Linear Technology
LT8584
• Developed for Linear Technology LT8584 Isolated Monolithic
Active Cell Balancer
• Designed to operate at 140 kHz; Rated for 7 – 12 Watts
• 1500 Vrms, one minute isolation between primary and secondary
• AEC-Q200 Grade 1 qualified (–40°C to +125°C ambient)
Core material Ferrite
Terminations RoHS tin-silver over tin over nickel over phos bronze.
Other terminations available at additional cost.
Weight 3.9 – 4.2 g
Ambient temperature –40°C to +125°C
Maximum part temperature +125°C (ambient + temp rise)
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 200 per 13″ reel Plastic tape: 32 mm wide, 0.5 mm thick,
24 mm pocket spacing, 11.2 mm pocket depth
PCB washing Tested to MIL-STD-202 Method 215 plus an additional
aqueous wash. See Doc787_PCB_Washing.pdf.
Part
number1
NA5743-AL_
InputInductanceInductance
LeakageOutput
3
  DCR max (Ohms)4inductance Turns ratio6
Ipk3voltage
voltage at 0 A2
at Ipk (V)
±10% (µH)
min (µH)
pri sec
max (µH)5
pri : sec
(A)
(V)
2 – 8
4.0
3.6
0.012
0.500
0.116
1 : 4
7.0
1. When ordering, please specify packaging code:
30 – 80
Dot above pin1
0.004 /0,10
0.041
1,05
0.600 max
15,24
5
Pri
Sec
3
4
8
Internal code
0.413
10,50
5
4
0.024
0,60
0.080
2,03
1
0.460
11,68
0.050
1,27
0.50 max
12,7
1
1
2
NA5743-AL
0.450 max
11,43
XXXXY
NA5743-ALD
Packaging: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.
2. Inductance is for the primary, measured at 150 kHz, 0.1 Vrms, 0 Adc.
3.Ipk is peak primary current drawn at minimum input voltage.
4. DCR for the primary is measured with windings connected in parallel.
5. Leakage inductance is for the primary, measured with secondary pins
shorted.
6. Turns ratio is with the primary windings connected in parallel.
7. Electrical specifications at 25°C.
Refer to Doc 362 “Soldering Surface Mount Components” before soldering.
Dimensions are in
8
inches
mm
0.098
2,50
Recommended 0.098
2,50
Land Pattern
Primary windings to be connected
in parallel on PC board
US +1-847-639-6400 [email protected]
UK +44-1236-730595 [email protected]
Taiwan +886-2-2264 3646 [email protected]
China +86-21-6218 8074 [email protected]
Singapore + 65-6484 8412 [email protected]
Document 1075 Revised 06/10/16
© Coilcraft Inc. 2016
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.