Flyback Transformers

Document 245

Document 245 Revised 01/31/05

Leakage

Part

DCR

Turns ratio

Weight

Application

number

±10% (mH)

max (Ohms)

max (µH)

(Vrms)

pri : sec pri : 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

—

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

1

: 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)

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.

Coilcraft can also custom engineer a transformer to meet

your specific requirements. For free evaluation samples,

contact Coilcraft or visit

www.coilcraft.com.

A

1

12

6

7

Bottom view

3

3

1

1

4

4

6

6

11

7

7

8

Z9007-BL

Z9260-AL

Pri

Pri

Sec

Sec

1

5

10

6

PriSec

Y8848-AL

1

4

8

5

Bottom view

E

F

G

1

4

8

5

Pri

Sec

Y8844-AL

B

C

D

B

C

D

A

5

1

6

10

Bottom view

1

1

E (7 places)

H

F

G

A

B

C

D

1

E(9 places)

H

F

G

12

12

Aux

Amax

Bmax Cmax

Dmin

E

F

Gdia

H (1 place)

Y8844-A

0.72

0.79

0.55

0.118

0.150

0.600

0.030

inches

18,3

20,1

14,0

3,0

3,81

15,24

0,76

mm

Y8848-A

1.10

1.10

0.95

0.12

0.200

0.620

0.044

0.150

inches

27,9

27,9

24,1

3,05

5,08

15,75

1,12

3,81

mm

Z9007-B, Z9260-A

1.45

1.45

1.17

0.12

0.200

0.875

0.044

0.150

inches

36,8

36,8

29,7

3,05

5,08

22,2

1,12

3,81

mm

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 be-

tween primary and auxiliary on Z9260-AL.

4. Primary to secondary turns ratio specified with secondary windings con-

nected in parallel.

5. Operating temperature range -40°C to +85°C.

6. Electrical specifications at 25°C.

For ON Semiconductor

NCP1200 Controller

Terminations: Tin-silver over tin over copper

For Z9007-BL and

Z9260-AL, secondary

windings to be con-

nected in parallel on

the circuit board.

Y8844-AL

Y8848-AL

Z9007-BL, Z9260-AL

Packaged

49 per tray

Packaged

30 per tray

Packaged 25 per tray