Vishay Intertechnology's SMBJ18CA is a bidirectional TRANS VOLTAGE SUPPRESSOR DIODE with a max clamping voltage of 29.2 V and a breakdown voltage of 21.05 V. It is surface mountable and commonly used in transient suppression applications.
ECA2DHG4R7 by Panasonic is a 4.7uF aluminum electrolytic capacitor with 200V rated DC voltage. It features tan delta of 0.15, leakage current of 0.0664mA, and ripple current of 50mA, making it ideal for applications requiring high capacitance stability and low leakage in through-hole mounting setups at temperatures ranging from -25 to 105°C.
Vishay Sprague's ULN-2803A is an 8-bit peripheral driver with a max supply voltage of 3V. Featuring open-collector output characteristics, it offers built-in transient protections and operates b/w -20°C to 85°C. Ideal for applications requiring sink current flow direction, this rectangular-shaped driver has a terminal pitch of 2.54mm and turn-on/off time of 1us.