MSD1278T_15 Datasheet, PDF (1/3 Pages) Coilcraft lnc. – Coupled Inductors

Document 704-1
Coupled Inductors MSD1278T Forhightemperature
applications
The MSD1278T series of shielded coupled inductors was
designed specifically for high temperature applications –
up to 125°C ambient.
Tight coupling (k ≥ 0.98) and 500 V isolation make them
ideal for use in a variety of circuits including flyback, multi-
output buck, SEPIC and Zeta. These parts provide high
inductance, high efficiency and excellent current handling.
They can also be used as two single inductors connected
in series or parallel or as a common mode choke.
0.484
12,3
max
01.428,34max
123
X
Dot indicates pin1
Dash number
Internal code
0.197
5,0
0.197
5,0
34
21
0.308 ±0.010_*
7,8 ±0,25
0.138
3,5
Recommended
Land Pattern
0.157
4,0
0.217
5,5
2 1 _0.177
3 4 ^4,5
0.059
1,5
*
For optional tin-lead and tin-silver-copper
terminations, dimensions are for the mounted
part. Dimensions before mounting can be
1
an additional 0.012 inch (0,3 mm).
L1
3
Dimensions are in
inches
mm
0.079
2,0
2
L2
4
+
D
L1
L2
C
V_IN
C
SW
+
V_OUT
–
–
Typical Flyback Converter
L2 ^{D C}
+
V_OUTAUX
–
+
+
L1
V_IN
D
SW
C
V_OUT
–
–
Typical Buck Converter with auxiliary output
+
V_IN C
L1
Q
C1
L2
D
C
+
V_OUT
–
–
Typical SEPIC schematic
+
Q
V_IN C
C1
L1
L2
D
C
+
V_OUT
–
–
Typical Zeta schematic
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Document 704-1  Revised 04/05/13
© Coilcraft Inc. 2016
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.