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Generic
S1F is an SMD diode marking used across multiple diode families. Exact voltage, current, package and diode type depend on the manufacturer and complete part number.
Final pricing may vary by configuration, quantity, delivery and project requirements.
The S1F is an SMD diode marking used by multiple semiconductor manufacturers, so the exact electrical specification depends on the manufacturer and full part number. One verified S1F-marked device is the Central Semiconductor CMDSH-3F, a silicon Schottky diode in an SOD-323F package. Its ratings are 30V reverse voltage and 100mA average forward current. :contentReference[oaicite:0]{index=0}
Other manufacturers also use S1F within different diode families. For example, Vishay uses S1F as the base marking for several S1FL-series rectifiers, while marking databases also show S1F associated with other 1A rectifier devices. :contentReference[oaicite:1]{index=1}
Because S1F is not a unique universal part number, the marking alone should not be used to specify an exact voltage or current rating.