The NanoTritium™ betavoltaic power source provides a source of continuous power for twenty years or more in microelectronic platforms. Applications include environmental pressure/temperature sensors, intelligence sensors, medical implants, trickle charging lithium batteries, semi-passive and active RFIDs (radio frequency identification), silicon clocks, SRAM memory backup, deep-sea oil well sensors, lower power processors (e.g. ASICs, FPGAs, MicroController Units, etc.).