huangyong 0 Report post Posted October 10, 2006 selling above discrete buffer for direct replacement of HA3-5002 or OPA633. if you happen to own a PPA v1 or V1.1, this is a good upgrade for you. i gave up my PPA project, these buffers are doing nothing for the past 13 months. you can get discrete buffer for more than S$100 out there, but i am selling $30 to benefit local PPA owner. PM me if u need, sell as a set of 3. cheers. Share this post Link to post Share on other sites