This tiny little guy is the ALS-PT19, an SMD ambient light sensor that is much smaller than the standard TEMT6000. The ALS-PT19 is capable of taking a voltage supply range of 2.5V to 5.5V and also functions as an NPN transistor. If you are looking for a small and easy to use light sensor, definitely pick up the ALS-PT19! Documents: * [Datasheet](http://cdn.sparkfun.com/datasheets/Components/General IC/ALS-PT19-315C-L177-TRdatasheet.pdf) https://elecena.pl/product/4475912/als-pt19-light-sensor 2013-10-25 https://elecena.pl/product/4475912/als-pt19-light-sensor 2016-11-25 https://elecena.pl/product/4475912/als-pt19-light-sensor 2016-11-29 https://elecena.pl/product/4475912/als-pt19-light-sensor 2016-12-10 https://elecena.pl/product/4475912/als-pt19-light-sensor 2016-12-14 https://elecena.pl/product/4475912/als-pt19-light-sensor 2017-11-24 https://elecena.pl/product/4475912/als-pt19-light-sensor 2017-11-28 https://elecena.pl/product/4475912/als-pt19-light-sensor 2018-05-05 https://elecena.pl/product/4475912/als-pt19-light-sensor 2018-11-21 https://elecena.pl/product/4475912/als-pt19-light-sensor 2018-11-27 https://elecena.pl/product/4475912/als-pt19-light-sensor 2022-02-21 https://elecena.pl/product/4475912/als-pt19-light-sensor 2025-04-12 https://elecena.pl/product/4475912/als-pt19-light-sensor 2025-04-14 https://elecena.pl/product/4475912/als-pt19-light-sensor 2025-05-21 https://elecena.pl/product/4475912/als-pt19-light-sensor 2025-05-24