The DSC1001AE2-004.4340 is a 4.434 MHz MEMS oscillator with a very thin dual flat no lead exposed pad package. It operates over a supply voltage range of 1.7V to 3.6V and has a temperature range of -20`C to 70`C. The oscillator has a frequency stability
The 5KP43AHE3/73 is a unidirectional Zener diode with a minimum breakdown voltage of 47.8V and a maximum reverse leakage current of 2uA. It has a maximum operating temperature of 175`C and a minimum operating temperature of -55`C. The diode is packaged i