Zener Diode (2.7V) 0.5W 5pcs

The Zener Diode (2.7V) 0.5W is a through-hole Zener diode with a breakdown voltage of 2.7 V and a power rating of 0.5 W, sold in a pack of 5. Used in reverse bias with a series resistor, it holds the voltage across it at about 2.7 V, which is handy for clamping signals that feed 3.3 V logic, simple low-voltage references and level limiting.

Zener Diode (2.7V) 0.5W Specifications

• Zener voltage: 2.7 V (nominal)
• Power rating: 0.5 W (500 mW)
• Maximum Zener current: about 185 mA in theory (0.5 W ÷ 2.7 V); stay well below this in practice
• Type: Zener diode, through-hole
• Polarity: cathode marked with a band
• Pack size: 5 pieces

Zener Diode (2.7V) 0.5W Applications

• Clamping signals into 3.3 V microcontroller inputs, together with a series resistor
• Low-voltage references for comparators
• Protecting sensitive inputs from voltage spikes
• Simple shunt regulators for very low-current loads
• Diode characteristic experiments in electronics labs

What's in the Box

• 5 × 2.7 V 0.5 W Zener diodes

Tip: Connect the cathode (band end) to the positive side and always add a series resistor: R = (Vin − 2.7 V) ÷ I, so from 5 V at 5 mA use about 470 Ω. Low-voltage Zeners have a soft knee, so their voltage changes more with current than on higher-voltage types.

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