
Overview
The MMSZ5251B is a zener Diode made by Jiangsu Changjing Electronics Technology (CJ) in a SOD-123 package with 2 pins. -65℃~+150℃ 1 Independent 100nA 20.9V~23.1V 22V 29Ω 350mW 600Ω SOD-123 Zener Diodes ROHS.
PCBKit's library has its KiCad symbol (Device:D_Zener, from KiCad's library) and its footprint (Diode_SMD:D_SOD-123, from KiCad's library), ready for a KiCad board. 2,765 are in stock at JLCPCB (part C21536).
Symbol
Footprint
Parameters
8- Diode Configuration
- 1 Independent
- Impedance(Zzk)
- 600Ω
- Impedance(Zzt)
- 29Ω
- Operating Junction Temperature Range
- -65℃~+150℃
- Pd - Power Dissipation
- 350mW
- Reverse Leakage Current (Ir)
- 100nA
- Zener Voltage(Nom)
- 22V
- Zener Voltage(Range)
- 20.9V~23.1V
Order codes
1- MMSZ5251BLCSC C21536
Pinout
2| Pin | Name | Type |
|---|---|---|
| 1 | K | Passive |
| 2 | A | Passive |
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Is there a KiCad symbol and footprint for the MMSZ5251B?
Yes. The symbol is Device:D_Zener and the footprint Diode_SMD:D_SOD-123, both drawn on this page. PCBKit places them on a board for you when you design with it.
What package is the MMSZ5251B?
SOD-123, with 2 pins. Its footprint is drawn on this page.
Where is the MMSZ5251B datasheet?
Jiangsu Changjing Electronics Technology (CJ) publishes it: the Datasheet link on this page opens it.
Where can I order the MMSZ5251B?
JLCPCB lists it as part C21536, with 2,765 in stock; the sellers' links on this page open their listings.
What can replace the MMSZ5251B?
Parts like it in the library: the BZT52C22 by hongjiacheng, the MM1W22 by hongjiacheng, the BZT52C22 by Jiangsu Changjing Electronics Technology (CJ) and the MMSZ5251B by hongjiacheng. Check their datasheets: a part that fits the footprint may still differ in its ratings.
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