Flyback Transformer – U6939-C

Document 268
ith
For use w family
x
4
C
8
3
IC
Micrel M
Flyback Transformer – U6939-C
Schematic
This product is not RoHS-compliant. Contact Coilcraft
for current status or possible alternatives.
This transformer has been specially designed to meet the
requirements of Micrel’s MIC38C4x family of BiCMOS
current-mode PWM controllers.
Free evaluation samples can be requested by contacting
the Coilcraft sales office nearest you.
Part Inductance1
number
±8% (µH)
U6939-C
380
DCR max
(Ohms)
(1-2) 0.580
(3-4) 0.120
(7-8) 0.011
Isolation
(Vrms)
(1-7,core) 2500
(1-3) 500
(3,7-core) 500
1.Inductance is for the primary, measured at 100 kHz, 1.0 Vrms,
0 Adc.
2.Operating temperature range -40°C to +85°C.
3.Electrical specifications at 25°C.
1
8
Sec
Pri
C
2
3
7
Ter
4
D
Recommended
Board Layout
A
E
5
4
F
B
8
1
0.047
0,12
A max
B max
C max
D nom
E
F
0.7100.9300.8100.2800.4920.197
inches
18,0323,6220,57 7,11 1,25 1,50
mm
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]
Document 268 Revised 9/10/01
© Coilcraft Inc. 2013
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.