The C1815 from Hunan Jingxin Microelectronics is a Bipolar Junction Transistor with Collector Base Voltage 60 V, Continuous Collector Current 150 mA, DC Current Gain 130 to 400, Gain Bandwidth Product 80 MHz, Power Dissipation 0.2 W. Tags: Surface Mount, NPN Transistor. More details for C1815 can be seen below.