The STPS3H100UFN from STMicroelectronics is a Schottky rectifier diode rated for 100 V DC reverse voltage and 3 A average rectified current. The forward voltage is specified at 760 mV at 3 A, and it carries a fast recovery time of ≤500 ns above 200 mA. This part is part of the ECOPACK2 series, indicating RoHS compliance and halogen-free construction. Typical applications include high-frequency DC-DC converters, freewheeling diodes, and polarity protection in power supplies that operate in elevated temperature environments such as industrial or automotive under-hood locations.
Obsolete status and sourcing reality
The STPS3H100UFN is listed as obsolete. This means STMicroelectronics has discontinued production, and no last-time-buy window is indicated in the available records.
The 100 V reverse voltage and 3 A forward current define the primary selection envelope. The 760 mV forward drop at 3 A is typical for a 100 V Schottky at this current level — it affects thermal dissipation in the PCB layout, particularly in continuous-conduction designs. The fast recovery spec (≤500 ns above 200 mA) confirms this is a switching diode, not a slow-recovery rectifier, so it is suited for switching frequencies in the tens to low hundreds of kHz.