forward voltage drop
Technical term in electronics and semiconductor engineering; refers to the voltage lost across a component when current flows in the forward direction.
The forward voltage drop of a diode is about 0.7 V.
This LED has a low forward voltage drop, making it suitable for power saving.
Refers to reverse voltage, the voltage applied in the opposite direction, as opposed to the forward voltage drop.
General term for voltage drop, not specifying direction; 順方向電圧降下 is a specific type.
Compound of 順方向 (forward direction), 電圧 (voltage), and 降下 (drop/fall). A straightforward technical term formed from standard Sino-Japanese elements.