
Overview
The MM3Z51 is a zener Diode made by HT in a SOD-323 package with 2 pins. 180Ω 1uA@39V 300mW 48V~54V 51V Independent ±5% SOD-323 Zener Diodes ROHS.
PCBKit's library has its KiCad symbol (Device:D_Zener, from KiCad's library) and its footprint (Diode_SMD:D_SOD-323, from KiCad's library), ready for a KiCad board. 2,950 are in stock at JLCPCB (part C23791870).
Symbol
Footprint
Parameters
7- Diode Configuration
- 1 Independent
- Impedance(Zzt)
- 180Ω
- Pd - Power Dissipation
- 300mW
- Reverse Leakage Current (Ir)
- 1uA@39V
- Tolerance
- ±5%
- Zener Voltage(Nom)
- 51V
- Zener Voltage(Range)
- 48V~54V
Order codes
1- MM3Z51LCSC C23791870
Pinout
2| Pin | Name | Type |
|---|---|---|
| 1 | K | Passive |
| 2 | A | Passive |
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<iframe src="https://pcbkit.io/embed/parts/ht/MM3Z51" title="MM3Z51 in PCBKit" width="100%" height="480" style="border:0;border-radius:12px" allow="fullscreen" loading="lazy"></iframe><img src="https://pcbkit.io/embed/parts/ht/MM3Z51.jpg" alt="MM3Z51" width="1200" height="900">[](https://pcbkit.io/parts/ht/MM3Z51)Questions
Is there a KiCad symbol and footprint for the MM3Z51?
Yes. The symbol is Device:D_Zener 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 MM3Z51?
SOD-323, with 2 pins. Its footprint is drawn on this page.
Where can I order the MM3Z51?
JLCPCB lists it as part C23791870, with 2,950 in stock; the sellers' links on this page open their listings.
What can replace the MM3Z51?
Parts like it in the library: the BZX384-B51 by Nexperia, the BZX384-C51-QX by Nexperia, the MM3Z51 by Shandong Jingdao Microelectronics and the MM3Z51BW by Shandong Jingdao Microelectronics. Check their datasheets: a part that fits the footprint may still differ in its ratings.
Parts like it
8BZX384-B51
SOD-323(SC-76)1 Independent 180Ω 300mW 50V~52V 50nA@35.7V 51V ±2% SOD-323(SC-76) Zener Diodes ROHSNexperiaZener DiodesBZX384-C51-QX
SOD-323SOD-323 Zener Diodes ROHSNexperiaZener DiodesMM3Z51
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SOD-323Zener DiodesMicro Commercial ComponentsBZX384-C51
SOD-3231 Independent 180Ω 300mW 48V~54V 50nA@35.7V 51V ±5% SOD-323 Zener Diodes ROHSNexperiaZener DiodesBZX384-C51F
SOD-3231 Independent 300mW 48V~54V 51V 5nA@35.7V 60Ω SOD-323 Zener Diodes ROHSNexperiaZener Diodes