The reverse recovery time is 26 ns.
10 A per die, common-cathode — the BOM-fit decision
Each of the two diodes in the common-cathode pair is rated for 10 A average rectified current. The forward voltage is 1.1 V maximum at 8 A.
175°C junction and 6 µA leakage — thermal design inputs
The junction is rated to 175°C maximum. Reverse leakage is 6 µA at 200 V.
D2PAK footprint and surface-mount assembly
The part comes in a D2PAK (TO-263-3) package — a 2-lead plus tab surface-mount package. The exposed tab is the anode of both diodes (common cathode on the leads), and it is also the primary thermal path.
STMicroelectronics lists the STTH1602CG-TR as Active. The ROHS3 compliance is confirmed. The base product number is STTH1602, so any future die revisions or package variants will carry a suffix change, not a full part-number obsoletion.