Microchip Technology, Inc. Single Bipolar Transistors 2N3498UB/TR

The 2N3498UB/TR is a silicon NPN transistor from the 2N3498 through 2N3501 family, designed for high-reliability and general-purpose medium power applications requiring high-frequency switching. It is available in the U4 surface-mount package, with a hermetically sealed kovar base and nickel cap. The device has a collector-emitter voltage rating of 100 V, collector current of 500 mA, and a maximum power dissipation of 15 W at 25 °C. Thermal resistance is 30 °C/W from junction to case and 175 °C/W from junction to ambient. The operating and storage junction temperature range is -65 °C to +200 °C. It is qualified to MIL-PRF-19500/366 at JAN, JANTX, JANTXV, and JANS reliability levels. The U4 package variant has a lead length specification of 1.50 to 1.750 inches minimum to maximum. The part belongs to the series described but is not explicitly listed.