That sounds like the symbol for a transorb. You have some sort of clipping device or transient suppresser network.
Fred Townsend rhonn tabanao wrote: > The pcb overlay symbol looks like this: > > Like 2 diodes connected cathode to cathode. > > See bitmap attachment: "If server would allow:" > > --- Fred Townsend wrote:> Rhonn your attachment was > stopped by the server. > You didn't mention if the> > unknown device has any resistance. Since a> capacitor > wouldn't function with a> diode in series by > elimination your unknown is> either a current > limiting> resistor or perhaps a zener in some sort of > clipper> or snubber network. Your> 1N4148 is rated at > 1A@ 200PIV.> > Fred Townsend> > rhonn tabanao wrote:> > > > Help identify parts.> > Looks like a crystal diode > (1N4148) but with no> > identifiable markings, no > color bands etc but has> this> > PCB overlay marking:> > >> > See attach file> >> > It is connected in series > with 1N4148 signal diode> > with the cathode of 1N4148 > to circuit ground and> the> > other end of this part > to some 1watt resistors.> The> > 1N4148 diode is OK > but this stuff is shorted.> >> > Any help will be > appreciated. Thank you> >> > =====> > Ronnie B. > Tabanao> > Everything Electronics Services> > #06 Juan > Luna St.,La Castellana,Negros Occidental> > 6131 > Philippines> >> > > __________________________________________________> > > Do you Yahoo!?> > Yahoo! Mail Plus - Powerful. > Affordable. Sign up> now.> > > http://mailplus.yahoo.com> >> > > > ------------------------------------------------------------------------> > > Name: Help identify> parts.doc> > Help identify > parts.doc Type: WINWORD File> (application/msword)> > > Encoding: 7bit> > > -- > Author: Fred Townsend> INET: > [EMAIL PROTECTED]> > Fat City Network Services -- > 858-538-5051> http://www.fatcity.com> San Diego, > California -- Mailing list and web> hosting services> > ---------------------------------------------------------------------> > To REMOVE yourself from this mailing list, send an> > E-Mail message> to: [EMAIL PROTECTED] (note EXACT > spelling of> 'ListGuru') and in> the message BODY, > include a line containing: UNSUB> CHIPDIR-L> (or the > name of mailing list you want to be removed> from). > You may> also send the HELP command for other > information> (like subscribing).> > > ===== > Ronnie B. Tabanao > Everything Electronics Services > #06 Juan Luna St.,La Castellana,Negros Occidental > 6131 Philippines > > __________________________________________________ > Do you Yahoo!? > Yahoo! Mail Plus - Powerful. Affordable. Sign up now. > http://mailplus.yahoo.com > > ------------------------------------------------------------------------ > Name: parts.bmp > parts.bmp Type: Paint Shop Pro 7 Image (image/bmp) > Encoding: 7bit -- Author: Fred Townsend INET: [EMAIL PROTECTED] Fat City Network Services -- 858-538-5051 http://www.fatcity.com San Diego, California -- Mailing list and web hosting services --------------------------------------------------------------------- To REMOVE yourself from this mailing list, send an E-Mail message to: [EMAIL PROTECTED] (note EXACT spelling of 'ListGuru') and in the message BODY, include a line containing: UNSUB CHIPDIR-L (or the name of mailing list you want to be removed from). You may also send the HELP command for other information (like subscribing).
