KA5038-BL

Document 914
Flyback Transformer
For ON Semiconductor NCP1236
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
InductanceInductance
at 0 A1
at Ipk2
±10% (µH)
min (µH)
560
480
Leakage
max (Ohms)3inductance4
pri sec aux
max (µH)
DCR
0.198
0.007
0.236
5.6
1 : 0.188 : 0.156
2.8
1
KA5038-BL
1.32
max
33,5
11
10
2
3
7
1.65 max
42,0
0.20
5,08
Sec
Pri
19 V, 3.5 A
12
6
1
Output6
Dot indicates pin 1
XXXX Y
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.
ratio5 Ipk2
pri : sec : aux
(A)
Turns
9
8
1
12
Recommended
PC Board Layout
4
0.30
7,62
0.915
max
23,24
0.157
4,0
5
Aux
6
Copper
shield
Primary windings to be connected in
series and secondary windings
to be connected in parallel on
PC board.
6
7
1.20
30,5
0.040
1,016
0.031
0,80
1.20
30,5
Dimensions are in
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]
inches
mm
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.