Forward voltage is specified at 600 mV at 20 A, and reverse leakage at 60 V is 600 µA. This device targets OR-ing diodes in redundant power supplies, high-current output rectification in switched-mode converters, and freewheeling diodes in motor drives — any circuit that needs the low forward drop of a Schottky at 20 A per leg in a common-cathode pair. The through-hole I2PAK package suits designs where board-level heatsinking or a clip-on heatsink is part of the thermal plan.
Obsolete — plan your BOM accordingly
ST lists the STPS41L60CR as Obsolete. For new designs, look at current ST Schottky families in similar packages — the STPS40L60C series (common-cathode, 60 V, 2x 20 A) in D²PAK or TO-220 is a functional equivalent but check the footprint and thermal pad.
600 mV Vf at 20 A — what the forward drop means for your rail
The 600 mV forward voltage at 20 A is typical for a 60 V Schottky in this current class — it keeps conduction losses around 12 W per diode at full rated current. That figure drives the heatsink requirement: at 20 A continuous, expect junction temperatures approaching the 150°C maximum unless the I2PAK tab is bolted to a thermal mass. The common-cathode pair shares the same tab, so both diodes see the same heatsink temperature. Reverse leakage of 600 µA at 60 V is typical for a 60 V Schottky at the hot end — this is the leakage you budget for in OR-ing applications at elevated ambient, not a concern at 25°C.