Y884x

Document 245
Flyback Transformers
These transformers have been specially developed for
use in flyback power supplies with the ON Semiconductor NCP1200 PWM Current-Mode Controller. They are
designed for universal input, 85 – 265 Vac.
For ON Semiconductor
NCP1200 Controller
Coilcraft can also custom engineer a transformer to meet
your specific requirements. For free evaluation samples,
contact Coilcraft or visit www.coilcraft.com.
Leakage
Part Inductance1
DCR inductance2 Isolation3 Turns ratioWeight
Application
number
±10% (mH) max (Ohms) max (µH) (Vrms)
pri : secpri : aux Output(g)
3.5 W
Y8844-AL
2.9
4.25 (8-5)
80
1500
1 : 0.08 —
6.5 V, 0.54 A
6.7
0.07 (4-1)
10 W
Y8848-AL
1.8
1.77 (10-6)
60
2000
1 : 0.1 —
12 V, 0.83 A
16
0.038 (5-1)
70 W
Z9007-BL
0.7
0.261 (12-7)
16
1500
1 : 0.164
—
16 V, 4.2 A
52
0.013 (6-1)
0.013 (4-3)
70 W
Z9260-AL
0.7
0.261 (12-7)
26
2000
1 : 0.1641 : 0.15
16 V, 4.2 A(sec) 54
with Auxilary winding
0.013 (6-1)
15 V, 0.2 A (aux)
0.013 (4-3)
0.045 (11-8)
1. Inductance is for the primary, measured at 10 kHz, 0.1 Vrms, 0 Adc
2. Leakage inductance tested at 100 kHz, 0.1 Vrms
3. Isolation tested between primary and secondary on all parts and between primary and auxiliary on Z9260-AL.
Y8844-AL
4. Primary to secondary turns ratio specified with secondary windings connected in parallel.
5. Operating temperature range -40°C to +85°C.
6. Electrical specifications at 25°C.
Y8848-AL
Z9007-BL, Z9260-AL
B
B
A
C
C
For Z9007-BL and
Z9260-AL, secondary
windings to be connected in parallel on
the circuit board.
B
D
4
D
5
1
8
Packaged
49 per tray
8
Pri
5
1
10
Sec
Pri
F
G
6
Sec
3
10
Z9260-AL
12
5
1
E (7 places)
Sec
1
Pri
7
11
H
8
G
1
6
12
4
Bottom view
Sec
Aux
F
A
1
Bottom view
Y8848-AL
4
7
6
4
Pri
7
1
Packaged
30 per tray
E
1
D
6
12
A
Bottom view
Y8844-AL
Z9007-BL
6
5
C
3
1
1
E (9 places)
Packaged 25 per tray
A max B max C max D min
E
F
G dia H (1 place)
Y8844-A
0.72 0.79 0.55 0.1180.1500.6000.030 inches
18,3 20,1 14,0 3,0 3,8115,240,76 mm
Y8848-A
1.101.100.950.120.200
0.620
0.044 0.150
inches
27,927,924,13,055,0815,751,12 3,81
mm
Z9007-B, Z9260-A1.451.451.170.120.200
0.875
0.044 0.150
inches
36,836,829,73,055,0822,21,12 3,81
mm
H
F
G
Terminations: Tin-silver over tin over copper
Document 245 Revised 01/31/05