Zener Diode (20V) 0.5W 5pcs

The Zener Diode (20V) 0.5W is a through-hole Zener diode that holds a steady 20 V across its terminals when it conducts in reverse bias. With a 0.5 W power rating, it is used for simple voltage references, over-voltage clamping and protecting inputs in power and signal circuits. This pack contains 5 pieces.

Zener Diode (20V) 0.5W Specifications

• Zener voltage: 20 V
• Power rating: 0.5 W
• Maximum Zener current: about 25 mA (0.5 W ÷ 20 V)
• Type: Zener diode, through-hole
• Marking: band on the cathode side
• Pack size: 5 pieces

Zener Diode (20V) 0.5W Applications

• Simple shunt voltage regulators and references
• Clamping voltage spikes on supply and signal lines
• Protecting MOSFET gates and amplifier inputs
• Voltage level detection circuits
• Electronics education and lab experiments

What's in the Box

• 5 × 20 V 0.5 W Zener diodes

Tip: Connect the Zener in reverse, with the cathode (banded end) towards the positive side, and always use a series resistor to limit the current. For example, from a 24 V supply a 330 Ω resistor gives about 12 mA, well within the 0.5 W rating.

Orders placed before 14:00 are ready for pickup the same day. Delivery across Lebanon usually takes 1–3 working days.