REVISIONS
REV.
01
02
DESCRIPTION
FIRST RELEASE FOR RFQ#A2007-10549
UPDATE CWW SPECIFICATION AS PER ACTUAL SAMPLES
ECN NO.
N/A
EE9998
DATE
12/19/07
01/04/08
PAGE 4 IS FOR INTERNAL ONLY
PART NUMBER
835-01005
835-01005F
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, 12 PIN
APPROVALS
DRAWN BY
PROJ. ENG
WARNING !
DATE
01/04/08
01/04/08
01/04/08
01/04/08
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 ± 0.13 X.X ± 0.3
WITHOUTAUTHORIZATION.
.XX ± .02
.X ± 0.5
X. ± 1
W.P. CHENG
W.P. CHENG
V. TSUI
C.M. TSUI
APPROVED BY
Q.A.
835-01005
DO NOT SCALE
PAGE
02
1
OF
4
.089
2.26
.492
12.50
6
12
.675 MAX
17.15
7
.098
2.50
EE
.837+.020/-.010
21.25+0.50/-0.25
.900
22.86
835-01005
(DATE)
.060
1.52
Pin 1
location
1
6
Recommended
Pad Layout
.028±.004x.016±.004
0.70±0.10x0.40±0.10
.675
17.15 MAX
.012± .008
0.30± 0.20
.330
8.38 MAX
REFERENCE OR
GAUGE PLANE
.098± .010
2.50± 0.25
.492± .010
12.50± 0.25
.050-.080
1.27-2.03
0-8°
1. Dimension are specified in
3. Coplanarity:
0.10
max.
.004
inches
mm
with higher precedence in inches.
.010
MECHANICAL OUTLINE
E & E Magnetic Products Ltd.
DRAWING NO./MODEL
REV
2. Unless otherwise specified, all tolerances 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, 835-001005F, the part will be marked with “835-01005F”, instead
of “835-01005”.
SCALE
835-01005
DO NOT SCALE
PAGE
02
2
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4
ELECTRICAL SPECIFICATION @25
°
C:
PARAMETERS
Turns Ratio(pri):(sec)
Turns Ratio(pri):(bias)
Turns Ratio(pri):(drive)
Polarity
DCR(pri)
DCR(sec)
DCR(bias)
DCR(drive)
Inductance, Ls(pri)@100kHz, 0.1Vrms
Inductance, Ls(pri)@100kHz, 0.1Vrms, 1.5Adc
LL(pri), short sec+drive@100kHz, 0.1Vrms
Cww(pri):(sec)
HIPOT(pri+bias):(sec+drive), 1 minute
UNIT
-
-
-
-
Ω
Ω
Ω
Ω
uH
uH
uH
pF
Vrms
LIMITS
5 : 1 ± 2%
2.3 : 1 ± 2%
3.3 : 1 ± 2%
Per Schematic
0.515 Max
0.023 Max
0.88 Max
0.57 Max
66 ± 10%
59.4 Min
2.0 Max
40 Max
1500 Min
1
7
Primary
20 - 57V
5
2
Bias
12V, 0.01A
3
12
11
Secondary
9
10
8
Drive
0V
7. Operating temperature: 0°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. Temperature Rise: 40°C max hot spot.
8. The secondary windings are to be connected in parallel on the PC board. DCR for secondary is
with winidngs connected in parallel. Turns ratio is with both secondary windings connected in
parallel.
9. Secondary output: 5V, 2.2A, Drive output: 7.8V, 0.2A
10.The transformer is designed to meet functional insulation level as per IEC60950. The insulation
materials are UL94V-0 compliant.
SCALE
SCHEMATIC
E & E Magnetic Products Ltd.
DRAWING NO./MODEL
REV
835-01005
DO NOT SCALE
PAGE
02
3
OF
4
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