STPS2H100ZFY

STPS2H100ZFY is a 2 A, 100 V Schottky barrier rectifier from STMicroelectronics (STPS2H100 family). It delivers low forward voltage drop and fast switching, enabling high-efficiency rectification in switching power supplies and DC-DC converters. Key traits include a typical forward voltage around 0.5–0.6 V at 2 A and negligible reverse recovery, which lowers both conduction and switching losses. Its 100 V reverse voltage rating supports general-purpose rectification up to its current limit. Typical applications: input/output rectification in buck/boost converters, freewheeling diodes in high-speed power stages, and polarity protection/ORing on power rails. The ZFY suffix denotes a specific ST packaging/lead configuration; for exact package, thermal characteristics, and mounting options, consult the datasheet.

Key features of STPS2H100ZFY (Schottky rectifier):
- 2 A average rectified current
- 100 V VRRM (reverse repetitive voltage)
- Very low forward voltage drop (typical ~0.5 V at 2 A)
- Fast switching with no reverse recovery (Schottky barrier)
- Low reverse leakage current (improves efficiency at low voltages)
- Suitable for high-efficiency SMPS, freewheel/rectifier applications
- Wide operating junction temperature range (-55°C to 150°C)
- RoHS-compliant, lead-free packaging (ZFY variant)

I don’t have the datasheet open, but STPS2H100ZFY is a dual Schottky rectifier in a 3‑lead package. Pinout (typical for ST dual Schottkys):
- Pin 1: Anode 1
- Pin 2: Cathode (common)
- Pin 3: Anode 2
Function: two Schottky diodes with a common cathode (used for fast, low‑drop rectification). Verify exact package pin numbering and electrical ratings (2 A, 100 V typical for STPS2H100 family) in the manufacturer datasheet.

Manufacturer: STMicroelectronics (often shown as ST).
What kind of company: STMicroelectronics is a Franco‑Italian multinational semiconductor company headquartered in Geneva, Switzerland. It designs and manufactures a broad portfolio of semiconductor products—microcontrollers, analog and power ICs, discrete components (including Schottky rectifiers like the STPS series), sensors, MEMS and related solutions—for automotive, industrial, consumer and communications markets.

STPS2H100ZFY is a high‑voltage, fast Schottky rectifier. Typical applications:
- Offline switch-mode power supplies and power adapters (rectification in high-voltage stage)
- Flyback/forward converters and other isolated SMPS rectification
- Freewheeling/rectifier diodes in buck/boost/DC-DC converters for high efficiency
- Reverse-polarity protection and OR-ing in automotive and industrial power paths
- Redundant/backup power supplies in telecom and data centers
- Solar inverters and motor-drive power electronics requiring high-voltage rectification
Low forward drop enables high efficiency in these applications.

STPS2H100ZFY is supplied in a DPAK (TO-252) surface-mount package; the "FY" suffix indicates tape-and-reel packaging.