MMBT4258

PN4258 / MMBT4258 Discrete POWER & Signal Technologies PN4258 MMBT4258 C E C B TO-92 E SOT-23 Mark: 78 B PNP Switching Transistor This device is designed for very high speed saturate switching at collector currents to 100 mA. Sourced from Process 65. Absolute Maximum Ratings* Symbol VCEO VCBO VEBO IC TJ, Tstg Collector-Emitter Voltage Collector-Base Voltage Emitter-Base Voltage Collector Current - Continuous TA = 25°C unless otherwise noted Parameter Value 12 12 4.5 200 -55 to +150 Units V V V mA °C Operating and Storage Junction Temperature Range *These ratings are limiting values above which the serviceability of any semiconductor device may be impaired. NOTES: 1) These ratings are based on a maximum junction temperature of 150 degrees C. 2) These are steady state limits. The factory should be consulted on applications involving pulsed or low duty cycle operations. Thermal Characteristics Symbol PD RθJC RθJA TA = 25°C unless otherwise noted Characteristic Total Device Dissipation Derate above 25°C Thermal Resistance, Junction to Case Thermal Resistance, Junction to Ambient PN4258 350 2.8 125 357 Max *MMBT4258 225 1.8 556 Units mW mW/ °C °C/W °C/W *Device mounted on FR-4 PCB 1.6" X 1.6" X 0.06." © 1997 Fairchild Semiconductor Corporation PN4258 / MMBT4258 PNP Switching Transistor (continued) Electrical Characteristics Symbol Parameter TA = 25°C unless otherwise noted Test Conditions Min Max Units OFF CHARACTERISTICS V(BR)CES VCEO(sus) V(BR)CBO ...