BZT52C12S SMD Zener Diode 12V 200mW SOD-323
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Prices updated: 14 Oct 2026
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About this product
An SMD Zener diode with a nominal Zener voltage of 12V and a 200mW power rating in a SOD-323 package. When reverse biased it holds the voltage near 12V, which makes it useful for simple voltage references, clamping and low-current regulation in signal and control circuits.
Specifications
- Zener voltage
- 12 V
- Power rating
- 200 mW
- Package
- SOD-323
- Mounting
- SMD
Frequently asked questions
How do I use it for simple voltage regulation?
Connect it in reverse bias with a series resistor from the supply. Choose the resistor so the diode power (Vz × Iz) stays under 200 mW, which means about 16 mA at 12 V.
Does polarity matter?
Yes. Zener diodes are polarised and the cathode is usually marked with a band. For reverse-bias regulation, the cathode goes to the positive rail.
