Microchip Technology, Inc. Single Bipolar Transistors JANTX2N3499UB/TR

The JANTX2N3499UB/TR is a military-grade NPN silicon transistor in a U4 surface-mount package, designed for high-reliability and medium-power applications requiring high-frequency switching. It is qualified to JANTX level per MIL-PRF-19500/366 and features a hermetically sealed kovar case with nickel-plated terminals. Maximum collector-emitter voltage is 100 V, collector current is 500 mA, and power dissipation is 1.5 W at 25 °C case temperature. Thermal resistance from junction-to-case is 30 °C/W and junction-to-ambient is 175 °C/W. Operating and storage junction temperature ranges from -65 °C to +200 °C. The device meets MIL-PRF-19500/366 qualification standards and is available in RoHS-compliant versions, though RoHS compliance is not specified for this U4 variant. Package dimensions conform to specified TO-5 style leaded surface-mount form factor.