While the PCB is high-temperature resistant (FR-4), loads exceeding 2000W can damage the SCR. If using near maximum capacity, active cooling (such as a fan) is required. Documentation & Schematics
The final step of the verification involved functional stress testing. I needed to ensure the 9892 would not fail during transient events, such as a sudden spike in load current. The datasheet promised built-in protection circuitry, specifically over-current and thermal shutdown features. Simulating a fault condition was nerve-wracking; a failure here would mean the destruction of the component. I applied the short circuit, watched the current spike, and then—precisely as the datasheet predicted—the component shut itself down to prevent damage. When the condition was removed, it restarted successfully. In that moment, the verification was complete.
The leakage current dropped. 0.12 pA… 0.08 pA… 0.04 pA. The temperature normalized. And then, remarkably, the clock began to ramp back up. 2.0 THz. 2.2 THz. 2.4 THz.
The (often sold as "MY9892") is a high-power SCR (Silicon Controlled Rectifier) module commonly used to control the speed of universal motors (e.g., drills, vacuum cleaners) or the brightness of lights.
: AC 50V to 220V (minimum adjustable down to 14V on some variants).