AN2521

PFC coil specification

29/33

7.4

Mechanical aspect and pin numbering

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Maximum height from PCB: 20 mm

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COIL former type: vertical, 5+3 pins

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PINS #1, 2, 4, 7 have been removed

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External copper shield: Not insulated, wound around the ferrite core and including the

coil former. Height is 7 mm. Connected to pin #3 by a solid wire.

Figure 32.

Mechanical aspect and pin numbering of PFC coil

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A: 27.0 max mm

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B1: 3.0 ± 0.3 mm

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B2: 5.0 ± 0.3 mm

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C: 3.3 ± 0.3 mm

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D: 19.0 max mm

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E: 21.0 ± 0.5 mm

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F: 23.7 ± 0.5 mm

25CQ-TXX

TDK

6

5

15

1

5

6

8

15

6

8

A

D

C

F E

B1 B1 B1 B1

B2

B2

x8

1. External COPPER sheet (0.025x7 mm)

2. MYLAR tape - 1 turn