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My name is Kevin, Mr. Fractenna. The reason I don't call the reps is
because I am not nearly as interested in the numbers they tell me as I am in the numbers that folks have already negotiated. In this way when I eventually call them I have an idea of how much I am getting ripped off. Last time I called a rep he wanted me to pay 60 cents for a nickel part. So how much I am overpaying is the answer I am after. You indicate that you are aware of less expensive alternatives to 4003. Would you kindly let me know what those are. Are we talking materials other than FR408? BTW the frequency is in the 3-4GHz band, so loss tangent and other stuff only somewhat matters. There is a price/efficiency tradeoff in play. I would like to 'see the whole field' before I decide which way to run. Thanks. Kevin Smith ....and that's exactly why you need the reps in. We do thousands of square feet of PCB a year, and we never had to use a newsgroup to figure out a good price, or ask anyone in the way you suggest. Call the reps. If you want to play games, then you can invite them over on the same day and ask for their best price. The substrate houses are eager for business and you owe it to good vendor-customer relationships to play it straight. That's my opinion. But hey, what do I know:-)? BTW, putting FR4 and 4003 in the same sentence indicates you may really need the vendors to fill you in: No one uses FR4 efficiently at those freqs--lousy loss tangent. OTH, I, personally, do not choose 4003 much due to cost, save for very specific high margin needs. But others, of course, may choose these great product according to their needs. 73, Chip N1IR |