Hi Mark,<div>Great find, thanks.</div><div><br></div><div>One thing I didn't find out is this: if the part has an msl higher than 1, then will it effectively stay at "zero time" while still on the tape?</div><div><br></div><div>Thanks a lot<br><br><div class="gmail_quote"><div dir="ltr">On Mon, 20 Mar 2017 16:00 Mark Goldberg <a href="mailto:marklgoldberg@gmail.com">marklgoldberg@gmail.com</a> [hp_agilent_equipment], <<a href="mailto:hp_agilent_equipment@yahoogroups.com">hp_agilent_equipment@yahoogroups.com</a>> wrote:<br></div><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex"><div class="gmail_msg"><div dir="auto" class="gmail_msg"><br class="gmail_msg"><div class="gmail_extra gmail_msg" dir="auto"><br class="gmail_msg"><div class="gmail_quote gmail_msg">On Mar 20, 2017 3:01 AM, "cheater00 cheater00 <a href="mailto:cheater00@gmail.com" class="gmail_msg" target="_blank">cheater00@gmail.com</a> [hp_agilent_equipment]" <<a href="mailto:hp_agilent_equipment@yahoogroups.com" class="gmail_msg" target="_blank">hp_agilent_equipment@yahoogroups.com</a>> wrote:<blockquote class="m_-1244604429086456917quote gmail_msg" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex"><div style="background-color:#fff" class="gmail_msg"><div id="m_-1244604429086456917m_-8188596453842553518ygrp-mlmsg" class="gmail_msg"><div id="m_-1244604429086456917m_-8188596453842553518ygrp-msg" class="gmail_msg"><div id="m_-1244604429086456917m_-8188596453842553518ygrp-text" class="gmail_msg"><div class="gmail_msg"><br class="gmail_msg"></div><div class="gmail_msg"><span style="font-size:13px" class="gmail_msg">I wasn't aware of the issue with moisture absorption by SMT parts. That is a very important consideration. What is the shelf life of such parts in a "pill box" enclosure, stored in a normal home environment? </span></div></div></div></div></div></blockquote></div></div><div dir="auto" class="gmail_msg"><br class="gmail_msg"></div></div></div><div class="gmail_msg"><div dir="auto" class="gmail_msg"><div dir="auto" class="gmail_msg">SMT parts have a Moisture Sensitivity Level or MSL rating that defines how long they can be outside the packaging before needing to be baked. If you get them from a reliable distributor, they will tell you the rating.</div><div dir="auto" class="gmail_msg"><br class="gmail_msg"></div><div dir="auto" class="gmail_msg"><span style="color:rgb(34,34,34);font-family:"helvetica neue",helvetica,"nimbus sans l",arial,"liberation sans",sans-serif;font-size:16px;background-color:rgb(255,255,255)" class="gmail_msg">IPC/JEDEC J-STD-020E will tell you more than you want to know about this, but you probably do not have access to it. Google will find lots of info if you search though. </span></div><div dir="auto" class="gmail_msg"><span style="color:rgb(34,34,34);font-family:"helvetica neue",helvetica,"nimbus sans l",arial,"liberation sans",sans-serif;font-size:16px;background-color:rgb(255,255,255)" class="gmail_msg"><br class="gmail_msg"></span></div><div dir="auto" class="gmail_msg"><span style="color:rgb(34,34,34);font-family:"helvetica neue",helvetica,"nimbus sans l",arial,"liberation sans",sans-serif;font-size:16px;background-color:rgb(255,255,255)" class="gmail_msg">I have a reflow oven and can bake the parts. They do store parts in cabinets full of dry nitrogen, and in sealed bags with absorbent packs. The caps I got from Digikey were rated MSL 1 or unlimited. </span></div><div dir="auto" class="gmail_msg"><span style="color:rgb(34,34,34);font-family:"helvetica neue",helvetica,"nimbus sans l",arial,"liberation sans",sans-serif;font-size:16px;background-color:rgb(255,255,255)" class="gmail_msg"><br class="gmail_msg"></span></div><div dir="auto" class="gmail_msg"><span style="color:rgb(34,34,34);font-family:"helvetica neue",helvetica,"nimbus sans l",arial,"liberation sans",sans-serif;font-size:16px;background-color:rgb(255,255,255)" class="gmail_msg">There also is a concern about oxidation of the contacts leading to bad soldering. Good flux will help that.</span><br class="gmail_msg"></div><div dir="auto" class="gmail_msg"><span style="color:rgb(34,34,34);font-family:"helvetica neue",helvetica,"nimbus sans l",arial,"liberation sans",sans-serif;font-size:16px;background-color:rgb(255,255,255)" class="gmail_msg"><br class="gmail_msg"></span></div><div dir="auto" class="gmail_msg"><span style="color:rgb(34,34,34);font-family:"helvetica neue",helvetica,"nimbus sans l",arial,"liberation sans",sans-serif;font-size:16px;background-color:rgb(255,255,255)" class="gmail_msg">I live in AZ where this is less of a problem than any humid place.</span></div><div dir="auto" class="gmail_msg"><span style="color:rgb(34,34,34);font-family:"helvetica neue",helvetica,"nimbus sans l",arial,"liberation sans",sans-serif;font-size:16px;background-color:rgb(255,255,255)" class="gmail_msg"><br class="gmail_msg"></span></div><div dir="auto" class="gmail_msg"><span style="color:rgb(34,34,34);font-family:"helvetica neue",helvetica,"nimbus sans l",arial,"liberation sans",sans-serif;font-size:16px;background-color:rgb(255,255,255)" class="gmail_msg">Mark</span></div><div dir="auto" class="gmail_msg"><span style="font-size:13px;background-color:rgb(255,255,255)" class="gmail_msg"><br class="gmail_msg"></span></div><div dir="auto" class="gmail_msg"><br class="gmail_msg"></div></div></div><div class="gmail_msg">
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