Phototransistor LTR-4206 Description This Lite-On LTR-4206 Phototransistor is a fully RoHS compliant through hole component. This component has been used in our Inventors Kit (from V1.7) for the BBC microbit and replaced the LDR from previous versions. The phototransistor is also much more sensitive and precise than the LDR that it replaced. There are several different types of phototransistor on https://elecena.pl/product/20734835/phototransistor-ltr-4206 2022-04-15 https://elecena.pl/product/20734835/phototransistor-ltr-4206 2025-07-09