Fujitsu MB3788 Benutzerhandbuch

19

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• Take account of common impedance when designing the earth line on a printed wiring board.

• Take measures against static electricity.

- For semiconductors, use antistatic or conductive containers.
- When storing or carrying a printed circuit board after chip mounting, put it in a conductive bag or container.
- The work table, tools and measuring instruments must be grounded.
- The worker must put on a grounding device containing 250 k

Ω

 to 1 M

Ω

 resistors in series.

• Do not apply a negative voltage

- Applying a negative voltage of 

−

0.3 V or less to an LSI may generate a parasitic transistor, resulting in 

malfunction.

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MB3788PFV

24-pin Plastic SSOP

(FPT-24P-M03)