600 V blocking, 8 A RMS — mains-rated SCR in a hand-solderable DPAK
The TN815-600B-TR is a standard-recovery SCR from STMicroelectronics rated for 600 V off-state blocking and 8 A RMS on-state current — a common choice for phase-control circuits like motor speed controllers, heater regulators, and AC switch applications in industrial and consumer equipment. Its 70 A (50 Hz) and 73 A (60 Hz) non-repetitive surge current rating means it can handle the inrush from a cold filament or capacitive load without failing — a key spec for relay replacement or solid-state switching where the load starts at zero impedance.
DPAK footprint and thermal management
The package accepts Tape & Reel (TR) or Cut Tape (CT) options, so it fits both high-volume pick-and-place lines and small-batch bench builds.
Gate drive and temperature range
The hold current of 40 mA ensures the SCR latches on once triggered and stays conducting until the load current drops below that threshold — typical for AC phase control where the current crosses zero each half-cycle.
Active lifecycle and compliance
It is ROHS3 compliant, meeting the latest EU restriction on hazardous substances — no lead, mercury, cadmium, or phthalates in the package.