No, they must be signal switching Zener will not work in the parallel link they do supposedly work in the serial link. -Mic http://www.geocities.com/SiliconValley/Bay/8116/index.html MRudolph99@aol.com wrote: > hi, > > I know this is a stupid question, but will 5.1v Zener diodes work in > the > parallel link? > > -Max