HA7210 Low Power Crystal Oscillator
HA7210 Low Power Crystal Oscillator
(OP)
Hi,
I have been using the HA7210 crystal oscillator for a number of years across a whole host of products. Its a simple IC with a crystal on the input giving a clock signal on the output. However I have received several batches lately made in different countries all of which have a failure rate of about 33% - where the O/P either works or it doesn't. I am struggling with the ones that fail to even get 400mV out. Has anyone else had similar problems?
Thanks
LC
I have been using the HA7210 crystal oscillator for a number of years across a whole host of products. Its a simple IC with a crystal on the input giving a clock signal on the output. However I have received several batches lately made in different countries all of which have a failure rate of about 33% - where the O/P either works or it doesn't. I am struggling with the ones that fail to even get 400mV out. Has anyone else had similar problems?
Thanks
LC





RE: HA7210 Low Power Crystal Oscillator
Pb-free solder requires higher temps, which can cook components if you're not careful. Hand soldering can be a minefield, especially if it's one by someone wanting to finish up... they'll often times crank up the heat on the iron for a faster melt, same result as before. If done by IR oven, is the profile set correctly, and is the profile being followed?
Dan - Owner

http://www.Hi-TecDesigns.com
RE: HA7210 Low Power Crystal Oscillator
Hi,
Thanks for the suggestions but having found the failures initially within the products we have now tested the IC's directly out of packaging and they either work or they don't so it seems that the yield issue is from the manufacturer which is a little disappointing. This has also happened on different batches originating from different countries. We have also x-rayed the IC's and can see no obvious signs of why they are failing.
RE: HA7210 Low Power Crystal Oscillator
Keith Cress
kcress - http://www.flaminsystems.com
RE: HA7210 Low Power Crystal Oscillator
I use the oscillator packages and let the manufacturer deal with these problems. And his probably work over the temperature range you need.