200 V Schottky pair in an isolated tab package
The fully isolated TO-220FPAB tab means the heatsink can share a ground plane without an insulating pad, which simplifies assembly and improves thermal contact in high-voltage PFC or output rectifier stages.
Junction rating and the 175°C ceiling
The -40°C to 175°C operating junction range is the spec that separates this part from a 150°C commodity Schottky. At 175°C the reverse leakage (15 µA at 200 V, 25°C) rises by orders of magnitude — the designer must budget the thermal runaway margin, especially in a common-cathode pair where both die share the same tab. This temperature grade suits power-factor-correction stages, server PSU output rectification, and any environment where the heatsink runs hot and the ambient is above 85°C.
Active status — no LTB clock ticking
Procurement can commit this BOM line without a rush to stockpile, though the TO-220FPAB package is less common than the standard TO-220 — confirm the heatsink clip or screw pattern matches the isolated tab thickness before qualifying the assembly.
Fast recovery — what ≤ 500 ns means here
The listed speed category — Fast Recovery ≤ 500 ns at > 200 mA — is a generic classification for the Schottky family, not a hard switching-speed spec. A Schottky's reverse recovery is dominated by its junction capacitance, not stored charge, so the actual turn-off transient is faster than the 500 ns bound in most hard-switching applications. The practical limit comes from the 200 V rating: the drift-layer capacitance is higher than in a 100 V Schottky, so expect a softer recovery edge at high di/dt in continuous-conduction-mode boost stages.