2N3499 Bipolar Transistor

• Type: NPN
• Collector-Emitter Voltage, max: 100 V
• Collector-Base Voltage, max: 100 V
• Emitter-Base Voltage, max: 6 V
• Collector Current − Continuous, max: 0.5 A
• Collector Dissipation: 1 W
• DC Current Gain (h_fe): 100 to 300
• Operating and Storage Junction Temperature Range: -65 to +200 °C
• Package: TO-39

Here is an image showing the pin diagram of this transistor.The 2SC3438 (SOT-89) is the SMD version of the 2N3499 transistor. These transistors are of the same type, have similar parameters and are designed for surface mounting.