REVISIONS
REV.
01
02
FIRST RELEASE
UPDATE DRAWING
DESCRIPTION
ECN NO.
N/A
EE13291
DATE
06/21/07
11/23/11
PAGE 4 IS FOR INTERNAL ONLY
PART NUMBER
PART DESCRIPTION
TITLE
835-00867
Standard version,
IMPORTANT: PAGE
with
IS FOR INTERNAL USE ONLY.
4
Lead(Pb)
835-00867F
UNLESS OTHERWISE
SPECIFIED, DIMENSIONS
ARE IN INCH/mm.
TRANSFORMER, SMT, 12 PIN
RoHS compliant per EU Directive 2002/95/EC(without exemption of solder content)
APPROVALS
DRAWN BY
DATE
11/23/11
11/23/11
11/23/11
11/23/11
SCALE
WARNING !
E & E Magnetic Products Ltd.
DRAWING NO./MODEL
REV
F. W. NIE
PROJ. ENG
ALL SHEETS OF THIS DOCUMENT ARE
CONTROLLED DOCUMENTATION AND
TOLERANCE ARE:
ARE NOT TO BE RELEASED OUTSIDE
mm
ANGLE
OF E&E OR ITS SUB-CONTRACTORS
INCH
.XXX
±
.005
.XX
±
.13
X.X
±
0.3
WITHOUT AUTHORIZATION.
.XX
±
.02
.X
±
.5
X.
±
1
J. P. AI
APPROVED BY
V. TSUI
Q.A.
835-00867
PAGE
OF
02
1
4
C.M. TSUI
DO NOT SCALE
.590
14.99
5
12
.840±.020
21.34
±0.51
7
.130
3.30
.118
3.00
EE
1.150
29.21 MAX
835-00867
(DATE)
1
.028
TYP
0.71
6
1.190
30.23
.060
1.52
Recommended
Pad Layout
.004
MIN
0.10
.450
MAX
11.43
REFERENCE OR
GAUGE PLANE
.118
±.010
3.00
±0.25
.590
±.010
14.99
±0.25
.080 TYP
2.03
1. Dimension are specified in
.006
0.15
inches
mm
MECHANICAL OUTLINE
with higher precedence in inches.
.010
0.25
2. Unless otherwise specified, all tolerances are
±
3. Coplanarity:
max.
.
E & E Magnetic Products Ltd.
DRAWING NO./MODEL
REV
4. "(DATE)" includes at least the manufacturing date code(in YYWW format) plus two character
country code.
5. For RoHS compliant version, 835-00867F, the part will be marked with
“835-00867F”,
instead
of
“835-00867”.
SCALE
835-00867
PAGE
OF
02
2
4
DO NOT SCALE
ELECTRICAL SPECIFICATION @25
°
C:
PARAMETERS
Turns Ratio(Pri):(Sec):(Aux)
Polarity
Inductance, Ls(Pri)@250kHz, 0.7Vrms, 0Adc
Inductance, Ls(Pri)@250kHz, 0.7Vrms, 2.6Adc
LL(Pri), short Sec@250kHz, 0.7Vrms
DCR(Pri)
DCR(Sec)
DCR(Aux)
HIPOT(Pri):(Sec)
UNIT
-
-
uH
uH
uH
W
W
W
Vrms
LIMITS
1 : 0.33 : 0.33
±
5%
Per Schematic
42
±
10%
37.8 Min
0.545 Max
0.061 Max
0.015 Max
0.195 Max
1500 Min
1
2
12
11
10
Pri
4
3
Sec
9
8
5
7
Aux
6
SCHEMATIC
6. Operating temperature range: -40°C to +125°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.
7. Peak primary current, 2.6A, is drawn at minimum input voltage.
8. The transformer is designed for a 250kHz switching frequency with an input of 36-72 volts.
Output of the auxiliary winding is 12V, 0.1A. Output of the secondary winding is 12V, 2.5A.
9. DCR is with the windings connected in parallel. Turns ratio is with the primary and the
secondary windings connected in parallel.
SCALE
E & E Magnetic Products Ltd.
DRAWING NO./MODEL
REV
835-00867
PAGE
OF
02
3
4
DO NOT SCALE
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