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Lead Free (RoHS) paste recommendations

1530 1 Sep 19.2019, 17:15:10

I'm contemplating which lead free paste to use for production. It'll be with stencils and a (very) basic oven. Low volume (100s not 10000) of units, some QFN no BGA, 0402 smallest parts. I'm using 100C for hand soldering which is great, but contemplating the SN42/BI57/AG for pastes.  Boards are ENIG if it matters. 
Should I got 100C, SAC305 or the Bi stuff?

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