
Small-7
NVlabs/Cypress
Cypress is a scalable, GPU-accelerated PCB placement method inspired by VLSI. It incorporates tailored cost functions, constraint handling, and optimized techniques adapted for PCB layouts.

The MMSZ5248B is a zener Diode made by Jiangsu Changjing Electronics Technology (CJ) in a SOD-123 package with 2 pins. 1 Independent 100nA@14V 17.1V~18.9V 18V 21Ω 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. 23,670 are in stock at JLCPCB (part C2127). 1 open-source board in 1 repository on GitHub use it.
| Pin | Name | Type |
|---|---|---|
| 1 | K | Passive |
| 2 | A | Passive |

NVlabs/Cypress
Cypress is a scalable, GPU-accelerated PCB placement method inspired by VLSI. It incorporates tailored cost functions, constraint handling, and optimized techniques adapted for PCB layouts.
<iframe src="https://pcbkit.io/embed/parts/cj/MMSZ5248B" title="MMSZ5248B in PCBKit" width="100%" height="480" style="border:0;border-radius:12px" allow="fullscreen" loading="lazy"></iframe><img src="https://pcbkit.io/embed/parts/cj/MMSZ5248B.jpg" alt="MMSZ5248B" width="1200" height="900">[](https://pcbkit.io/parts/cj/MMSZ5248B)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.
SOD-123, with 2 pins. Its footprint is drawn on this page.
Jiangsu Changjing Electronics Technology (CJ) publishes it: the Datasheet link on this page opens it.
JLCPCB lists it as part C2127, with 23,670 in stock; the sellers' links on this page open their listings.
Parts like it in the library: the BZT52C18 by hongjiacheng, the BZT52C18 by GOODWORK, the MMSZ5248B by hongjiacheng and the MM1W18 by Shandong Jingdao Microelectronics. Check their datasheets: a part that fits the footprint may still differ in its ratings.
1 board in 1 repository on GitHub; the most starred are listed on this page, with their KiCad files.