
Overview
The MM3Z18 is a zener Diode made by STMicroelectronics in a SOD-323 package with 2 pins. 1 Independent 100nA@13V 16.8V~19.1V 18V 300mW 45Ω SOD-323 Zener Diodes ROHS.
PCBKit's library has its KiCad symbol (Diode:MM3Zxx, from KiCad's library) and its footprint (Diode_SMD:D_SOD-323, from KiCad's library), ready for a KiCad board. 2,902 are in stock at JLCPCB (part C61848).
Symbol
Footprint
Parameters
6- Diode Configuration
- 1 Independent
- Impedance(Zzt)
- 45Ω
- Pd - Power Dissipation
- 300mW
- Reverse Leakage Current (Ir)
- 100nA@13V
- Zener Voltage(Nom)
- 18V
- Zener Voltage(Range)
- 16.8V~19.1V
Order codes
1- MM3Z18LCSC C61848
Pinout
2| Pin | Name | Type |
|---|---|---|
| 1 | K | Passive |
| 2 | A | Passive |
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<iframe src="https://pcbkit.io/embed/parts/st/MM3Z18" title="MM3Z18 in PCBKit" width="100%" height="480" style="border:0;border-radius:12px" allow="fullscreen" loading="lazy"></iframe><img src="https://pcbkit.io/embed/parts/st/MM3Z18.jpg" alt="MM3Z18" width="1200" height="900">[](https://pcbkit.io/parts/st/MM3Z18)Questions
Is there a KiCad symbol and footprint for the MM3Z18?
Yes. The symbol is Diode:MM3Zxx and the footprint Diode_SMD:D_SOD-323, both drawn on this page. PCBKit places them on a board for you when you design with it.
What package is the MM3Z18?
SOD-323, with 2 pins. Its footprint is drawn on this page.
Where is the MM3Z18 datasheet?
STMicroelectronics publishes it: the Datasheet link on this page opens it.
Where can I order the MM3Z18?
JLCPCB lists it as part C61848, with 2,902 in stock; the sellers' links on this page open their listings.
What can replace the MM3Z18?
Parts like it in the library: the MM3Z18-TD by TDSEMIC, the MM3Z18V by onsemi, the MM3Z18BW by JSMSEMI and the MM3Z18VS by onsemi. Check their datasheets: a part that fits the footprint may still differ in its ratings.
Parts like it
8MM3Z18-TD
SOD-323-55℃~+150℃ 1 Independent 100nA@13V 17.64V~18.36V 18V 300mW 45Ω ±2% SOD-323 Zener Diodes ROHSTDSEMICZener DiodesMM3Z18V
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SOD-323-65℃~+150℃ 1 Independent 16.8V~19.1V 18V 300mW 45Ω 50nA@12.6V 80Ω SOD-323 Zener Diodes ROHSonsemiZener DiodesMM3Z18
SOD-323Zener DiodesFOSANMM3Z18
SOD-323-55℃~+150℃ 1 Independent 100nA@13V 16.8V~19.1V 18V 300mW 45Ω ±5% SOD-323 Zener Diodes ROHSGOODWORKZener DiodesBZX384-B18
SOD-3231 Independent 17.6V~18.4V 18V 300mW 45Ω 50nA@12.6V SOD-323 Zener Diodes ROHSNexperiaZener Diodes