Looking at the Alum. Electro. Caps again, not all that information is posted unless I read each cap's data sheet.
Where it is posted, in just a few of them, perhaps a third of the list, are all more or less the same:
Temp: -5C to 105C
Tolerance: 20%
In reading a few data sheets, ESR is not mentioned, though there is a lot of technical information where the ESR could be deduced. But the Average Joe is not going to do this and needs something more simplier to grasp on to. And they all state 1000 hours as a testing benchmark and not as an actual bench mark of the product's life ("After 1000 hours of operation, the capacitor is still within its 20% tolerance blab blab blab..."), there is no mention of actual or predicted shelf or operational life span for the device. This makes the information statement is pretty much useless. 1000 hours is about a month and a half of continuous use or a couple of years of on/off usage.
I know my electronics but am sometimes confused by situations like this one. Things are not always what they seem to be. I understand what you are saying TechKnight, but not all that information is posted, not even on their data sheets.
Where it is posted, in just a few of them, perhaps a third of the list, are all more or less the same:
Temp: -5C to 105C
Tolerance: 20%
In reading a few data sheets, ESR is not mentioned, though there is a lot of technical information where the ESR could be deduced. But the Average Joe is not going to do this and needs something more simplier to grasp on to. And they all state 1000 hours as a testing benchmark and not as an actual bench mark of the product's life ("After 1000 hours of operation, the capacitor is still within its 20% tolerance blab blab blab..."), there is no mention of actual or predicted shelf or operational life span for the device. This makes the information statement is pretty much useless. 1000 hours is about a month and a half of continuous use or a couple of years of on/off usage.
I know my electronics but am sometimes confused by situations like this one. Things are not always what they seem to be. I understand what you are saying TechKnight, but not all that information is posted, not even on their data sheets.