ULN2803A by Texas Instruments is a peripheral driver with 8 functions. It has a max supply voltage of 3V and can operate in temperatures ranging from -40 to 85°C. This IC is commonly used as a buffer or inverter based peripheral driver for various applications.
NUP2105LT1G by Onsemi is a Transient Suppression Device with 350W power dissipation, 29.1V breakdown voltage, and 44V clamping voltage. Commonly used in electronic circuits for surge protection due to its bidirectional polarity and silicon diode element material.
NXP Semiconductors' BSS138BK,215 is a N-CHANNEL FET with 0.36A max drain current and 0.42W power dissipation. Ideal for applications requiring single configuration and surface mount technology, such as enhancement mode operation in temperatures up to 150°C.
NPN; Configuration: SINGLE; Surface Mount: NO; Maximum Power Dissipation (Abs): 1 W; Maximum Collector Current (IC): .8 A; Maximum Power Dissipation Ambient: .5 W;