ROHM Semiconductor USA, LLC PNP Switching transistor MMST2907A

The MMST2907A is a PNP medium power switching transistor manufactured by ROHM Semiconductor USA, LLC. It features a collector-emitter breakdown voltage (BVCEO) of -60V and is designed for applications requiring reliable switching performance. The transistor has a maximum collector current rating of -0.6A and a collector power dissipation of 0.2W. It operates effectively within a junction temperature range of -55¬8C to +150¬8C. The MMST2907A is packaged in a compact SC-59 form factor, making it suitable for space-constrained applications. Key electrical characteristics include a DC current transfer ratio (hFE) that varies with collector current, and it exhibits fast switching times with a turn-on time of approximately 50ns and a turn-off time of around 100ns. This transistor complements other models in the series, such as the UMT2222A and SST2222A, providing versatility in design options. Engineers considering the MMST2907A for their projects should evaluate its specifications against their application requirements, particularly in terms of voltage, current, and thermal performance.