REVISIONS
REV.
01
FIRST RELEASE
DESCRIPTION
ECN NO.
N/A
DATE
11/21/07
PART NUMBER
835-00848
835-00848F
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.
PAGE 4 IS FOR INTERNAL USE
TITLE
TRANSFORMER, FLYBACK, SMT, 10 PIN
APPROVALS
DRAWN BY
PROJ. ENG
WARNING !
DATE
11/21/07
11/21/07
11/21/07
11/21/07
SCALE
E & E Magnetic Products Ltd.
DRAWING NO./MODEL
REV
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
W.P. CHENG
V. TSUI
C.M. TSUI
APPROVED BY
Q.A.
835-00848
DO NOT SCALE
PAGE
01
1
OF
4
6
.394
10.00
.550
13.97 MAX
1
5
.100
2.54
.098
2.50
.705
17.91
.051
1.30
.695
17.65 MAX
835-00848
EE
(DATE)
10
6
RECOMMENDED
PAD LAYOUT
.028± .003
0.71±0.08
.005-.020
0.13-0.51
.485
12.32 MAX
0-8º
REFERENCE OR
GAUGE PLANE
.098± .010
2.50±0.25
.394± .010
10.00±0.25
.040± .010
1.02±0.25
1. Dimension are specified in
3. Coplanarity:
0.10
max.
.004
inches
mm
with higher precedence in mm.
.010
2. Unless otherwise specified, all tolerance are ±
0.25
.
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.
6. For RoHS compliant version, 835-00848F, the part will be marked with “835-00848F”, instead
of “835-00848”.
SCALE
MECHANICAL OUTLINE
E & E Magnetic Products Ltd.
DRAWING NO./MODEL
REV
835-00848
DO NOT SCALE
PAGE
01
2
OF
4
ELECTRICAL SPECIFICATION @25
°
C:
PARAMETERS
Turns Ratio(3-4):(8/7-10/9)
Turns Ratio(3-4):(2-1)
Polarity
Inductance, Ls(3-4)@250kHz, 0.1Vrms
Inductance, Ls(3-4)@250kHz, 0.1Vrms, 1.0Adc
LL(3-4), short 8-7-10-9-2-1@250kHz, 0.1Vrms
DCR(3-4)
DCR(2-1)
DCR(8-10) or DCR(7-9)
HIPOT(3-4-2-1):(8-7-10-9), 1 minute
UNIT
-
-
-
uH
uH
uH
mΩ
mΩ
mΩ
VAC
LIMITS
1 : 0.166 ± 2%
1 : 0.50 ± 2%
Per Schematic
127.0 ± 10%
114.3 Min
1.25 Max
255 Max
310 Max
24 Max
1500 Min
2
Bias
1
3
Pri
4
8
7
Sec
9
10
SCHEMATIC
7. Operating temperature range: -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. Output of the secondary is with the windings connected in parallel. Bias winding output is
12V, 20mA.
SCALE
E & E Magnetic Products Ltd.
DRAWING NO./MODEL
REV
835-00848
DO NOT SCALE
PAGE
01
3
OF
4
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