Application Block for Anti-lost Alarm Recommended Items Product Name Function NJG1815 SPDT SWITCH GaAs MMIC NJG1730 2.4GHz Band SP3T Switch + LNA GaAs MMIC R5443Z 1-Cell Li-ion Battery Protection IC RP509 0.5A/1A 6MHz PWM/VFM Step-down DC/DC Converter with Synchronous Rectifier TO-2106BC-MRF Surface Mount Device LED