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 | 品牌 | PD_Max/W | VZ_Min/V | VZ_Max/V | @ IZT/mA | ZZT_Max/Ω | IR_Max/μA | 封装 |
|---|---|---|---|---|---|---|---|---|
| MMSZ5255BS | LEADSILICON | 0.2 | 26.6 | 29.4 | 4.5 | 0.1 | SOD-323 | |
| MMSZ5256BS | LEADSILICON | 0.2 | 28.5 | 31.5 | 4.2 | 0.1 | SOD-323 | |
| MMSZ5257BS | LEADSILICON | 0.2 | 31.35 | 34.65 | 3.8 | 0.1 | SOD-323 | |
| MMSZ5258BS | LEADSILICON | 0.2 | 34.2 | 37.8 | 3.4 | 0.1 | SOD-323 | |
| MMSZ5259BS | LEADSILICON | 0.2 | 37.05 | 40.95 | 3.2 | 0.1 | SOD-323 | |
| MMSZ5231CS | LEADSILICON | 0.2 | 5 | 5.2 | 20 | 5 | SOD-323 | |
| MMSZ5232CS | LEADSILICON | 0.2 | 5.49 | 5.71 | 20 | 5 | SOD-323 | |
| MMSZ5233CS | LEADSILICON | 0.2 | 5.88 | 6.12 | 20 | 5 | SOD-323 | |
| MMSZ5234CS | LEADSILICON | 0.2 | 6.08 | 6.32 | 20 | 5 | SOD-323 | |
| MMSZ5235CS | LEADSILICON | 0.2 | 6.66 | 6.94 | 20 | 3 | SOD-323 | |
| MMSZ5236CS | LEADSILICON | 0.2 | 7.35 | 7.65 | 20 | 3 | SOD-323 | |
| MMSZ5237CS | LEADSILICON | 0.2 | 8.04 | 8.36 | 20 | 3 | SOD-323 | |
| MMSZ5238CS | LEADSILICON | 0.2 | 8.53 | 8.87 | 20 | 3 | SOD-323 | |
| MMSZ5239CS | LEADSILICON | 0.2 | 8.92 | 9.28 | 20 | 3 | SOD-323 | |
| MMSZ5240CS | LEADSILICON | 0.2 | 9.8 | 10.2 | 20 | 3 | SOD-323 | |
| MMSZ5241CS | LEADSILICON | 0.2 | 10.78 | 11.22 | 20 | 2 | SOD-323 | |
| MMSZ5242CS | LEADSILICON | 0.2 | 11.76 | 12.24 | 20 | 1 | SOD-323 | |
| MMSZ5243CS | LEADSILICON | 0.2 | 12.74 | 13.26 | 9.5 | 0.5 | SOD-323 | |
| MMSZ5244CS | LEADSILICON | 0.2 | 13.72 | 14.28 | 9 | 0.1 | SOD-323 | |
| MMSZ5245CS | LEADSILICON | 0.2 | 14.7 | 15.3 | 8.5 | 0.1 | SOD-323 |