The present invention is directed to a thick film conductive composition comprising: a) electrically conductive silver powder; b) ZnO powder; c) lead-free glass frits wherein based on total glass frits: Bi.sub.2O.sub.3: >5 mol %, B.sub.2O.sub.3: <15 mol %, BaO: <5 mol %, SrO: <5 mol %, Al.sub.2O.sub.3: <5 mol %; and d) organic medium, wherein (the content of ZnO/the content of the silver powder).times.100 is more than 2.5.