REVISIONS
REV.
01
FIRST RELEASE
DESCRIPTION
ECN NO.
N/A
DATE
03/31/08
PAGE 4 IS FOR INTERNAL ONLY
PART NUMBER
835-00979
835-00979F
PART DESCRIPTION
Standard version, with Lead(Pb)
RoHS compliant per EU Directive 2002/95/EC(without exemption of solder content)
UNLESS OTHERWISE
SPECIFIED, DIMENSIONS
ARE IN INCH/mm.
TITLE
TRANSFORMER, FLYBACK, SMT, 8 PIN
APPROVALS
DRAWN BY
DATE
03/31/08
03/31/08
03/31/08
03/31/08
SCALE
WARNING !
E & E Magnetic Products Ltd.
DRAWING NO./MODEL
REV
W.P. CHENG
PROJ. ENG
ALL SHEETS OF THIS DOCUMENT ARE
CONTROLLED DOCUMENTATION AND
TOLERANCE ARE:
ARE NOT TO BE RELEASED OUTSIDE
INCH
mm
ANGLE
OF E&E OR ITS SUB-CONTRACTORS
.XXX ± .005 .XX ± .13 X.X ± 0.3
WITHOUTAUTHORIZATION.
.XX ± .02
.X ± .5
X. ± 1
W.P. CHENG
APPROVED BY
V. TSUI
Q.A.
835-00979
PAGE
OF
01
1
4
C.M. TSUI
DO NOT SCALE
.295
7.50
.080
2.03
6
.500
12.70 MAX
1
4
.098
2.50
.620
15.75
.050
1.27
.600
15.24 MAX
8
EE
5-0979
(DATE)
5
Recommended
Pad Layout
.024±.004 x8
0.60±0.10
.004-.020
0.10-0.51
.450 MAX
11.43
0-8º
REFERENCE OR
GAUGE PLANE
.098±.010
2.50±0.25
.040±.010
1.02±0.25
.295±.010
7.50±0.25
1. Dimensions are specified in
inches
with higher precedence in mm.
mm
2. Unless otherwise specified, all tolerances are ±
.010
.
0.25
3. Coplanarity:
.004
max.
0.10
4. "(DATE)" includes at least the manufacturing date code(in YYWW format) plus two character
country code.
5. Dimensions are to be measured in accordance with JEDEC standard 95-1.
MECHANICAL OUTLINE
E & E Magnetic Products Ltd.
DRAWING NO./MODEL
REV
6. For RoHS compliant version, 835-00979F, the part will be marked with “5-0979, instead of “5-
0979”.
SCALE
835-00979
PAGE
OF
01
2
4
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ELECTRICAL SPECIFICATION @25
°
C:
PARAMETERS
Turns Ratio(3-2) : (5/6-7/8)
Polarity
Ls(3-2) @400kHz, 0.4Vrms
Ls(3-2) @400kHz, 0.4Vrms, 1.3Adc
LL(3-2), short 5-6-7-8 @400kHz, 0.4Vrms
DCR(3-2)
DCR(6-8) or DCR(5-7)
Hipot(3-2):(5-6-7-8)
UNIT
-
-
uH
uH
uH
Ω
Ω
Vrms
LIMITS
10 : 4 ± 2%
Per Schematic
40 ± 10%
36 Min
0.340 Max
0.098 Max
0.085 Max
1500 Min
3
5
6
Pri
36-72V
2
Sec
5.0V, 2.0A
8
7
SCHEMATIC
7. Operating temperature: -40°C to +85°C. The part temperature (ambient temperature +
temperature rise) should not exceed the upper limit of the operating temperature under worst
case operating conditions. Circuit design, component placement, PWB trace size and thickness,
airflow and other cooling provisions, all affect the part temperature. Part temperature should be
verified in the end application.
8. The part is designed to meet operational insulation only.
9. Output of the secondary is with the windings connected in parallel.
SCALE
E & E Magnetic Products Ltd.
DRAWING NO./MODEL
REV
835-00979
PAGE
OF
01
3
4
DO NOT SCALE
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