The STTH6006TV1 is a dual fast-recovery diode module from STMicroelectronics, packing two independent standard diodes in a single ISOTOP package rated for chassis mounting. Each diode handles 30 A average rectified current at a 600 V reverse voltage, with a 70 ns reverse recovery time that places it firmly in the fast-recovery class — the switching-speed tier that matters for high-frequency rectification, snubber clamping, and boost-stage freewheeling in switch-mode power supplies and motor drives.
30 A per diode — thermal budget in a 2-diode module
At 30 A forward current the forward voltage drops to 1.85 V max, which means each diode dissipates about 55 W at full rated current. The ISOTOP package is designed to be bolted to a heatsink — the thermal path through the baseplate is the only way to keep junction temperature inside the -55°C to 150°C operating range. A 25 µA reverse leakage at 600 V is negligible at room temperature but rises with junction temperature; the thermal design must budget for that leakage at the hot end.
Chassis-mount ISOTOP — mechanical integration path
The ISOTOP package (also called ISOTOP®) is a bolt-down power module with screw terminals, designed for high-vibration environments and direct-to-heatsink mounting. The two independent diodes share the same baseplate, so the electrical isolation between the diodes and the heatsink must be verified at the system level — the module itself provides isolation through its ceramic substrate. The chassis-mount form factor suits industrial drives, welding equipment, and UPS systems where a PCB-mounted TO-247 or D2PAK cannot handle the current or the vibration.
The base product number STTH6006 covers a family of fast-recovery diodes; the TV1 suffix identifies this specific 2-diode ISOTOP module variant.