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 |
|---|---|---|---|---|---|---|---|---|
| MMSZ5248C | LEADSILICON | SOD-123 | 0.5 | 17.64 | 18.36 | 7 | 0.1 | |
| MMSZ5250C | LEADSILICON | SOD-123 | 0.5 | 19.6 | 20.4 | 6.2 | 0.1 | |
| MMSZ5225BS | LEADSILICON | SOD-323 | 0.2 | 2.85 | 3.15 | 20 | 50 | |
| MMSZ5226BS | LEADSILICON | SOD-323 | 0.2 | 3.14 | 3.47 | 20 | 25 | |
| MMSZ5227BS | LEADSILICON | SOD-323 | 0.2 | 3.42 | 3.78 | 20 | 15 | |
| MMSZ5228BS | LEADSILICON | SOD-323 | 0.2 | 3.71 | 4.1 | 20 | 10 | |
| MMSZ5229BS | LEADSILICON | SOD-323 | 0.2 | 4.09 | 4.52 | 20 | 5 | |
| MMSZ5230BS | LEADSILICON | SOD-323 | 0.2 | 4.47 | 4.94 | 20 | 5 | |
| MMSZ5231BS | LEADSILICON | SOD-323 | 0.2 | 4.85 | 5.36 | 20 | 5 | |
| MMSZ5232BS | LEADSILICON | SOD-323 | 0.2 | 5.32 | 5.88 | 20 | 5 | |
| MMSZ5233BS | LEADSILICON | SOD-323 | 0.2 | 5.7 | 6.3 | 20 | 5 | |
| MMSZ5234BS | LEADSILICON | SOD-323 | 0.2 | 5.89 | 6.51 | 20 | 5 | |
| MMSZ5235BS | LEADSILICON | SOD-323 | 0.2 | 6.46 | 7.14 | 20 | 3 | |
| MMSZ5236BS | LEADSILICON | SOD-323 | 0.2 | 7.13 | 7.88 | 20 | 3 | |
| MMSZ5237BS | LEADSILICON | SOD-323 | 0.2 | 7.79 | 8.61 | 20 | 3 | |
| MMSZ5238BS | LEADSILICON | SOD-323 | 0.2 | 8.27 | 9.14 | 20 | 3 | |
| MMSZ5239BS | LEADSILICON | SOD-323 | 0.2 | 8.65 | 9.56 | 20 | 3 | |
| MMSZ5240BS | LEADSILICON | SOD-323 | 0.2 | 9.5 | 10.5 | 20 | 3 | |
| MMSZ5241BS | LEADSILICON | SOD-323 | 0.2 | 10.45 | 11.55 | 20 | 2 | |
| MMSZ5242BS | LEADSILICON | SOD-323 | 0.2 | 11.4 | 12.6 | 20 | 1 |