20V 5W 1N5357B Zener Diode (5-Piece Pack)

A 20V zener lines up with a common class of higher-voltage DC supply rails found in some motor controller, amplifier bias, and power-adapter circuits, giving designers a ready-made clamping or reference point at that round-number voltage. Carrying the same 5W rating as the rest of this series, it holds up under real clamping current during voltage spikes, making it a practical protection component for 18-20V class circuits rather than needing to improvise with a less precisely matched voltage value.