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TVS Diode - does VCC pin on each IC need its own TV diode?
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Sugiman



Joined: 13 Jan 2005
Posts: 8
Post30 Apr 2009 7:10   

TVS Diode question
I am trying to get ESD protection for a board that has multiple ICs.
I'd like to use TVS diodes, because they're small.
Does each VCC pin on each IC need its own TVS diode?
For example the main MCU has 7 VCC pins, does that require 7 TVS?

thank you
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r2d2droids



Joined: 28 Jan 2005
Posts: 40
Helped: 1
Post07 May 2009 7:40   

Re: TVS Diode question
i think it must be. if mcu has 7 vcc pins, all vcc pins have their own tvs diodes. and the diodes should be placed as close as posible to the under protected IC.
regards.
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dipnirvana



Joined: 23 Jan 2009
Posts: 207
Helped: 21
Location: India
Post12 May 2009 13:07   

Re: TVS Diode question
well if u want to protect it through ESD only , use TVS diode on external IO with series resisitance in each one
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