KA5038_16 Datasheet, PDF (1/1 Pages) Coilcraft lnc. – Flyback Transformer

Document 914
Flyback Transformer ForONSemiconductorNCP1236
Fixed Frequency PWM Controller
• Flyback transformer for ON Semiconductor NCP1236 Fixed
Frequency PWM Controller
• Referenced on Akros Silicon Application Note AN006
• Universal input; 66 W output
• 3000 Vrms, one minute isolation from primary to secondary
windings
• Copper shield minimizes EMI radiation
Core material Ferrite
Terminations  RoHS tin-silver over tin over nickel over phos bronze.
Other terminations available at additional cost.
Weight  60.2 g
Ambient temperature  –40°C to +85°C
Maximum part temperature  +125°C. (ambient + temp rise). Derating.
Storage temperature  Component: –40°C to +85°C.
Tray packaging: –40°C to +80°C
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  36 per tray
PCB washing  Tested with pure water or alcohol only. For other solvents,
see Doc787_PCB_Washing.pdf

Part
number
KA5038-BL
Inductance
  _{at 0 A}1
±10% (µH)
560
Inductance
  _{at Ipk}2
min (µH)
480
  DCR max (Ohms)³
pri   sec   aux
0.198 0.007 0.236
Leakage
inductance⁴
max (µH)
5.6
  _{Turns ratio}5   _Ipk2
pri : sec : aux
(A)
1 : 0.188 : 0.156 2.8
  _Output6
19 V, 3.5 A
1. Inductance is measured at 50 kHz, 0.1 Vrms.
2. Peak primary current drawn at minimum input voltage.
3. DCR is with the primary windings connected in series and the secondary windings connected
in parallel.
4. Leakage inductance is for both windings of the primary with the secondary windings shorted.
5. Turns ratios are with the primary windings connected in series and the secondary windings
connected in parallel.
6. Output is with the secondary windings connected in parallel. Output of the aux winding is
15.5V V, 20 mA.
7. Electrical specifications at 25°C.
1
Pri
2
3
11
10
Sec
9
1
8
0.20
12
5,08
1
1.32
33,5
max
6
Dot indicates pin 1
12
7
1.65
42,0
max
4
5
Aux
6
Copper
shield
Primary windings to be connected in
series and secondary windings
to be connected in parallel on
PC board.
Recommended
0.30
PC Board Layout
7,62
6
7
1.20
30,5
0.040
1,016
0.915
23,24
max
0.031
0,80
0.157
4,0
1.20
30,5
Dimensions are in
inches
mm
US [phone] [e-mail]
UK [phone] [e-mail]
Taiwan [phone] [e-mail]
China [phone] [e-mail]
Singapore + 65-6484 8412 [e-mail]
Document 914  Revised 04/24/12
© 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.