Coilcraft C356 Manual - Page 10

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Familiarize yourself with each of the parts in the kit and determine the correct
combination of parts needed to build your prototype. Before beginning the as-
sembly take note of the pin connections for each layer of all the boards you
plan to use.
Each Primary Board winding connects to pins 2 and 3. An inverted primary
board connects to pins 4 and 3.
Secondary Stamp 1 connects to pins 7 and 8. An inverted Stamp 1 connects
to pins 8 and 9. Secondary Stamp 2 connects to pins 9 and 10. An inverted
Stamp 2 connects to pins 6 and 7.
Each Auxiliary Board connects to pins 1 and 5.
A typical schematic showing pin connections is shown in Figure 2. A typical
dimensional drawing and recommended land pattern is show in Figure 3.
2
Pri
3
4
1
Aux
5
Figure 2. Typical Schematic
1
2
0.810
3
max
20,57
4
5
0.360
max
9,14
8
9
Sec
8
7
Dot indicates pin 1
10
9
8
7
6
0.920
23,37 max
Figure 3. Typical Dimensional Drawing
Note: By using stamps as the primary
and primary boards as the sec-
ondary, a step-up transformer,
up to 1 : 12 turns ratio, can be
created.
0.095
2,41
1
2
3
0.095
4
2,41
5
0.080
Ø
2,03
Recommended
Land pattern shown is for all pins being used. If pins are not
used in the transformer, omit pads from the pattern.
0.006 /0,15
0.800
20,32
0.125
10
9
8
7
6
Land Pattern
3,18
Ø 0.110
2,79