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 |
|---|---|---|---|---|---|---|---|---|
| MMSZ5235B | LEADSILICON | SOD-123 | 0.5 | 6.46 | 7.14 | 20 | 3 | |
| MMSZ5236B | LEADSILICON | SOD-123 | 0.5 | 7.13 | 7.88 | 20 | 3 | |
| MMSZ5237B | LEADSILICON | SOD-123 | 0.5 | 7.79 | 8.61 | 20 | 3 | |
| MMSZ5238B | LEADSILICON | SOD-123 | 0.5 | 8.27 | 9.14 | 20 | 3 | |
| MMSZ5239B | LEADSILICON | SOD-123 | 0.5 | 8.65 | 9.56 | 20 | 3 | |
| MMSZ5240B | LEADSILICON | SOD-123 | 0.5 | 9.5 | 10.5 | 20 | 3 | |
| MMSZ5241B | LEADSILICON | SOD-123 | 0.5 | 10.45 | 11.55 | 20 | 2 | |
| MMSZ5242B | LEADSILICON | SOD-123 | 0.5 | 11.4 | 12.6 | 20 | 1 | |
| MMSZ5243B | LEADSILICON | SOD-123 | 0.5 | 12.35 | 13.65 | 9.5 | 0.5 | |
| MMSZ5244B | LEADSILICON | SOD-123 | 0.5 | 13.3 | 14.7 | 9 | 0.1 | |
| MMSZ5245B | LEADSILICON | SOD-123 | 0.5 | 14.25 | 15.75 | 8.5 | 0.1 | |
| MMSZ5246B | LEADSILICON | SOD-123 | 0.5 | 15.2 | 16.8 | 7.8 | 0.1 | |
| MMSZ5247B | LEADSILICON | SOD-123 | 0.5 | 16.15 | 17.85 | 7.4 | 0.1 | |
| MMSZ5248B | LEADSILICON | SOD-123 | 0.5 | 17.1 | 18.9 | 7 | 0.1 | |
| MMSZ5250B | LEADSILICON | SOD-123 | 0.5 | 19 | 21 | 6.2 | 0.1 | |
| MMSZ5251B | LEADSILICON | SOD-123 | 0.5 | 20.9 | 23.1 | 5.6 | 0.1 | |
| MMSZ5252B | LEADSILICON | SOD-123 | 0.5 | 22.8 | 25.2 | 5.2 | 0.1 | |
| MMSZ5253B | LEADSILICON | SOD-123 | 0.5 | 23.75 | 26.25 | 5 | 0.1 | |
| MMSZ5254B | LEADSILICON | SOD-123 | 0.5 | 25.65 | 28.35 | 5 | 0.1 | |
| MMSZ5255B | LEADSILICON | SOD-123 | 0.5 | 26.6 | 29.4 | 4.5 | 0.1 |