Microchip Technology, Inc. Single Bipolar Transistors 2N3700AUB/TR

The 2N3700 series is a low-power NPN silicon transistor for high-reliability applications, available in a surface-mount UB package. It features a hermetically sealed metal TO-18 package with gold-plated terminals and a weight of approximately 0.3 grams. Maximum ratings include a collector-emitter voltage of 80 V, a collector current of 1.0 A, and a total power dissipation of 0.5 W at 25 °C ambient temperature. Thermal impedance is 325 °C/W junction-to-ambient and 150 °C/W junction-to-case. It meets MIL-PRF-19500/391 military qualification standards and offers RoHS-compliant versions. The device exhibits a forward-current transfer ratio (hFE) ranging from 15 to 300 depending on bias conditions, and an output capacitance of 12 pF. The UB package variant is designed for surface-mount assembly.