Guru
Joined: 03/03/2016
Location: United StatesPosts: 769
| Posted: 05:23pm 14 Aug 2020 |
I don't understand why you guys go chasing the cheapest questionable source for these sensors. You're probably buying sensors that didn't pass final inspection. I suspect that the production yield after final inspection is less than 30%!
Bandgap sensors are difficult to make, requiring the calibration of the current density in two p-n diode junctions and measuring the difference between them. Why would you deliberately buy seconds when Mouser has over 3,000 of the real thing in stock at a price of < $4.00 each.
The only difficult part is finding an appropriately sized closed end stainless steel or copper tube to insert the TO92 case into, or just mounting them by their wires on a little terminal board.
Paul in NY