Microchip Technology, Inc. Single Bipolar Transistors 2N3499UB

The 2N3498 through 2N3501 series consists of NPN silicon transistors for high-reliability, medium-power applications requiring high-frequency switching. Available in TO-39, TO-5, and U4 surface-mount packages, the devices feature hermetically sealed Kovar cases with nickel-plated leads and operate over a junction temperature range of -65°C to +200°C. The 2N3499 variant has a collector-emitter voltage rating of 100 V, a collector current of 500 mA, and a thermal resistance junction-to-ambient of 175 °C/W. All variants meet MIL-PRF-19500/366 qualification levels for JAN, JANTX, JANTXV, and JANS reliability grades. RoHS-compliant versions are available for commercial grade only. The U4 package variant, including 2N3499U4, is designed for surface-mount applications with dimensions specified in the mechanical drawings.