The MMBT8550D(1.5A)-Y2 is a PNP transistor manufactured by Semtech. It is RoHS compliant and comes in a SOT-23-3 (or flat-lead) package, making it suitable for use in mobile and other devices. This device has a collector current rating of 1.5A and a maximum collector-emitter voltage of 25V. It is an ideal choice for medium power applications like low frequency switching and driver circuits. This transistor has a wide operating temperature range, making it suitable for automotive applications.