稳压二极管也称为 齐纳二极管，是一种利用二极管反向击穿特性进行稳压的电子元件。当反向电压达到或超过其击穿电压（齐纳电压）时，稳压管会进入击穿状态，并维持一个相对稳定的电压输出。这个稳定的电压值被称为稳压值，广泛应用于稳压电源和限幅电路中。
| 型号 | 制造商 | 封装 | PD_Max/W | VZ_Min/V | VZ_Max/V | @ IZT/mA | ZZT_Max/Ω | IR_Max/μA |
|---|---|---|---|---|---|---|---|---|
| MMSZ5243BS | LEADSILICON | SOD-323 | 0.2 | 12.35 | 13.65 | 9.5 | 0.5 | |
| MMSZ5244BS | LEADSILICON | SOD-323 | 0.2 | 13.3 | 14.7 | 9 | 0.1 | |
| MMSZ5245BS | LEADSILICON | SOD-323 | 0.2 | 14.25 | 15.75 | 8.5 | 0.1 | |
| MMSZ5246BS | LEADSILICON | SOD-323 | 0.2 | 15.2 | 16.8 | 7.8 | 0.1 | |
| MMSZ5248BS | LEADSILICON | SOD-323 | 0.2 | 17.1 | 18.9 | 7 | 0.1 | |
| MMSZ5250BS | LEADSILICON | SOD-323 | 0.2 | 19 | 21 | 6.2 | 0.1 | |
| MMSZ5251BS | LEADSILICON | SOD-323 | 0.2 | 20.9 | 23.1 | 5.6 | 0.1 | |
| MMSZ5252BS | LEADSILICON | SOD-323 | 0.2 | 22.8 | 25.2 | 5.2 | 0.1 | |
| MMSZ5253BS | LEADSILICON | SOD-323 | 0.2 | 23.75 | 26.25 | 5 | 0.1 | |
| MMSZ5254BS | LEADSILICON | SOD-323 | 0.2 | 25.65 | 28.35 | 5 | 0.1 | |
| MMSZ5255BS | LEADSILICON | SOD-323 | 0.2 | 26.6 | 29.4 | 4.5 | 0.1 | |
| MMSZ5256BS | LEADSILICON | SOD-323 | 0.2 | 28.5 | 31.5 | 4.2 | 0.1 | |
| MMSZ5257BS | LEADSILICON | SOD-323 | 0.2 | 31.35 | 34.65 | 3.8 | 0.1 | |
| MMSZ5258BS | LEADSILICON | SOD-323 | 0.2 | 34.2 | 37.8 | 3.4 | 0.1 | |
| MMSZ5259BS | LEADSILICON | SOD-323 | 0.2 | 37.05 | 40.95 | 3.2 | 0.1 | |
| MMSZ5231CS | LEADSILICON | SOD-323 | 0.2 | 5 | 5.2 | 20 | 5 | |
| MMSZ5232CS | LEADSILICON | SOD-323 | 0.2 | 5.49 | 5.71 | 20 | 5 | |
| MMSZ5233CS | LEADSILICON | SOD-323 | 0.2 | 5.88 | 6.12 | 20 | 5 | |
| MMSZ5234CS | LEADSILICON | SOD-323 | 0.2 | 6.08 | 6.32 | 20 | 5 | |
| MMSZ5235CS | LEADSILICON | SOD-323 | 0.2 | 6.66 | 6.94 | 20 | 3 |