The MMBT2907A is a 600mA, 60V PNP transistor in a SOT-23 RoHS package. It is manufactured by Formosa and is designed specifically for high frequency switching applications. The transistor has high switching speed with low collector-emitter saturation voltage and high current gain. Additionally, it is designed with high frequency immunity, which makes it suitable for use in audio amplifier circuits and in power circuits with input signals up to 20kHz. The device is compliant with the Restriction of Hazardous Substances (RoHS) directive, ensuring protection for both human health and the environment.