gunrunnerjohn posted:I did that a few minutes ago, and it promptly destroyed my last regulator just as fast as the others.
I don't think I order any more of these, I chalk it up to a good idea gone bad.
Curious who made these parts (reputable firm or "some weirdly marked or named firm) and all from same date/lot code. Its been my experience that not all regulators of same part number from different vendors act exactly the same. The pass transistor may be beefier or there may be phantom diodes that react when they should be "dormant" etc.
We had an avionics design that worked beautifully in lab and went to production then had failures that we traced to a particular vendors IC. For whatever reason one brand just would not work over temperature and voltage levels. Manufacturer swore design and process was exactly like what they had licensed from original. Finally we just had to specify that this vendor part was disqualified for this build. All other vendor same number parts worked perfectly except this vendor. So guess like Animal Farm: "all 74xx parts are same, but some are more same than others"
