MA5421_15 Datasheet, PDF (1/1 Pages) Coilcraft lnc. – Flyback Transformer

Document 1001
Flyback Transformer ForLinearTechnology
LTC3300-1 Cell Balancer
• Flyback transformer developed for Linear Technology
LTC3300‑1 Bidirectional Cell Balancer
• 1500 Vrms primary to secondary isolation; 500 Vrms isolation
between windings of the primary and the secondary
Core material Ferrite
Terminations  RoHS tin-silver (96.5/3.5) over tin over nickel over phos
bronze. Other terminations available at additional cost.
Weight  6.0 g
Ambient temperature  –40°C to +85°C with Irms current
Maximum part temperature  +125°C (ambient + temp rise)
Storage temperature  Component: –40°C to +85°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  175 per 13″ reel  Plastic tape:  32 mm wide, 0.5 mm thick,
28 mm pocket spacing, 12.93 mm pocket depth
PCB washing  Tested with pure water or alcohol only. For other solvents,
see Doc787_PCB_Washing.pdf

Part
  ^number1
MA5421-AL_
Inductance
  ^{at 0 A2}
±15% (µH)
3.4
Inductance
  ^{at Ipk3}
DCR max (Ohms)⁴
min (µH)
pri    sec
2.8
0.009 0.011
Leakage
inductance
max (µH)⁵
0.15
  _{Turns ratio}6
pri : sec
1:1
  _Ipk3   _Irms7
(A)
(A)
10
3.3
1. When ordering, please specify packaging code:
MA5421-ALD
Packaging: D = 13″ machine-ready reel. EIA-481 embossed plastic
tape (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.
Dot above pin1
0.500
12,70
max
2. Inductance is for the primary, measured at 100 kHz, 0.1 Vrms, 0 Adc.
3. Ipk is peak primary current drawn at minimum input voltage.
4. DCR is for the windings connected in parallel.
5. Leakage inductance is for the primary windings connected in parallel
and is measured with the secondary windings shorted.
6. Turns ratio is with the primary windings and the secondary windings
connected in parallel.
7. Current that causes a 40°C rise from 25°C ambient, tested with
continuous current flowing through all windings. This information is for
reference only and does not represent absolute maximum ratings.
8. Electrical specifications at 25°C.
Refer to Doc 362 “Soldering Surface Mount Components” before soldering.
0.039
1,00
1
0.530
13,46
max
5
01.76,9795max
0.512
13,00
Dimensions
are
in
inches
mm
0.004 /0,10
0.028
0,70
10
0.080
2,03
0.590
14,99
0.050
1,27
6
0.098
2,50
0.197
5,0
1
Recommended
Land Pattern
0.098
2,50
1
6
2
7
Pri
Sec
9
4
10
5
Primary windings and secondary
windings to be connected in parallel
on the PC board
Document 1001  Revised 10/13/15