Zener Diode 18V 1/2W BZX55C18V (DO-35)
Prices updated: 13 Oct 2026
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| Store | product | Price | View in store |
|---|---|---|---|
 Microohm | Zener Diode 18V 1/2w BZX55C18V | 0.5 EGP0.75 | View in store |
Price history
Lowest daily price, last 90 days
Lowest price recorded: 0.5 EGP
About this product
A 1/2 W (0.5 W) zener diode with a nominal 18 V breakdown voltage, range 16.8 to 19.1 V, in a DO-35 package. It is used as a voltage reference and for simple shunt voltage regulation in low-current circuits when reverse-biased through a series resistor.
Specifications
- Nominal Zener voltage
- 18 V
- Zener voltage range
- 16.8 – 19.1 V
- Power rating
- 1/2 W (0.5 W)
- Tolerance
- ±5% (C suffix)
- Reverse leakage current
- < 0.1 µA
- Storage temperature
- -65 to 175 °C
- Package
- DO-35
Frequently asked questions
What is the price of Zener Diode 18V 1/2W BZX55C18V (DO-35) in Egypt?
Zener Diode 18V 1/2W BZX55C18V (DO-35) currently costs 0.5 EGP in Egypt.
Where can I buy Zener Diode 18V 1/2W BZX55C18V (DO-35) in Egypt?
Zener Diode 18V 1/2W BZX55C18V (DO-35) is available from Microohm. Compare the offers above to find the best price.
How do I wire it as an 18V voltage regulator?
Connect the cathode (the banded end) to the positive rail and the anode to ground, so the diode is reverse-biased. Place a series resistor between the supply and the cathode to limit current. Keep the total power within the 0.5 W rating.
How do I identify the polarity of the diode?
The cathode end is marked with a band. In the reverse direction it holds its voltage near 18 V; if installed the other way it behaves like a normal forward-biased diode at about 0.6 to 0.7 V.
