Document 245
Flyback Transformers
These transformers have been specially developed for
use in flyback power supplies with the ON Semiconduc-
tor NCP1200 PWM Current-Mode Controller. They are
designed for universal input, 85 – 265 Vac.
Part
number
Y8844-AL
Y8848-AL
Z9007-BL
Inductance
1
±10% (mH)
2.9
1.8
0.7
DCR
max (Ohms)
4.25 (8-5)
0.07 (4-1)
1.77 (10-6)
0.038 (5-1)
0.261 (12-7)
0.013 (6-1)
0.013 (4-3)
0.261 (12-7)
0.013 (6-1)
0.013 (4-3)
0.045 (11-8)
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.
Application
3.5 W
10 W
70 W
Leakage
inductance
2
max (µH)
80
60
16
Isolation
3
(Vrms)
1500
2000
1500
Turns ratio
pri : sec pri : aux
1
:
0.08
1
:
0.1
1
:
0.16
4
—
—
—
Output
6.5 V, 0.54 A
12 V, 0.83 A
16 V, 4.2 A
Weight
(g)
6.7
16
52
70 W
with Auxilary winding
Z9260-AL
0.7
26
2000
1
:
0.16
4
1
:
0.15
16 V, 4.2 A(sec)
15 V, 0.2 A (aux)
54
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.
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.
Y8844-AL
A
C
Y8848-AL
B
Z9007-BL, Z9260-AL
B
C
B
D
4
5
5
1
8
6
D
For Z9007-BL and
Z9260-AL, secondary
windings to be
connected in parallel
on the circuit board.
Z9007-BL
6
12
4
6
7
C
D
Bottom view
Packaged 49 per tray
E
1
A
Pri
7
Sec
3
1
Packaged
30 per tray
Y8848-AL
1
10
A
Bottom view
12
5
1
Z9260-AL
6
4
1
Y8844-AL
8
4
10
Pri
5
Sec
1
E (7 places)
Pri
7
11
12
Pri
F
G
6
Sec
1
Sec
3
1
1
Bottom view
E (9 places)
H
H
Aux
8
F
G
A max
Y8844-A
Y8848-A
Z9007-B, Z9260-A
0.72
18,3
1.10
27,9
1.45
36,8
B max
0.79
20,1
1.10
27,9
1.45
36,8
C max
0.55
14,0
0.95
24,1
1.17
29,7
D min
0.118
3,0
0.12
3,05
0.12
3,05
E
0.150
3,81
0.200
5,08
0.200
5,08
F
0.600
15,24
0.620
15,75
0.875
22,2
G dia
0.030
0,76
0.044
1,12
0.044
1,12
H (1 place)
F
G
0.150
3,81
0.150
3,81
Packaged 25 per tray
Terminations:
Tin-silver over tin over copper
Specifications subject to change without notice.
Please check our website for latest information.
Document 245
Revised 01/31/05
© Coilcraft, Inc. 2008
COILCRAFT [ Coilcraft lnc. ]
