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 |
|---|---|---|---|---|---|---|---|---|
| MMBZ5242B | LEADSILICON | 0.3 | 11.4 | 12.6 | 20 | 1 | SOT-23 | |
| MMBZ5243B | LEADSILICON | 0.3 | 12.35 | 13.65 | 9.5 | 0.5 | SOT-23 | |
| MMBZ5244B | LEADSILICON | 0.3 | 13.3 | 14.7 | 9 | 0.1 | SOT-23 | |
| MMBZ5245B | LEADSILICON | 0.3 | 14.25 | 15.75 | 8.5 | 0.1 | SOT-23 | |
| MMBZ5246B | LEADSILICON | 0.3 | 15.2 | 16.8 | 7.8 | 0.1 | SOT-23 | |
| MMBZ5247B | LEADSILICON | 0.3 | 16.15 | 17.85 | 7.4 | 0.1 | SOT-23 | |
| MMBZ5248B | LEADSILICON | 0.3 | 17.1 | 18.9 | 7 | 0.1 | SOT-23 | |
| MMBZ5249B | LEADSILICON | 0.3 | 18.05 | 19.95 | 6.6 | 0.1 | SOT-23 | |
| MMBZ5250B | LEADSILICON | 0.3 | 19 | 21 | 6.2 | 0.1 | SOT-23 | |
| MMBZ5251B | LEADSILICON | 0.3 | 20.9 | 23.1 | 5.6 | 0.1 | SOT-23 | |
| MMBZ5252B | LEADSILICON | 0.3 | 22.8 | 25.2 | 5.2 | 0.1 | SOT-23 | |
| MMBZ5253B | LEADSILICON | 0.3 | 23.75 | 26.25 | 5 | 0.1 | SOT-23 | |
| MMBZ5254B | LEADSILICON | 0.3 | 25.65 | 28.35 | 5 | 0.1 | SOT-23 | |
| MMBZ5255B | LEADSILICON | 0.3 | 26.6 | 29.4 | 4.5 | 0.1 | SOT-23 | |
| MMBZ5256B | LEADSILICON | 0.3 | 28.5 | 31.5 | 4.2 | 0.1 | SOT-23 | |
| MMBZ5257B | LEADSILICON | 0.3 | 31.35 | 34.65 | 3.8 | 0.1 | SOT-23 | |
| MMBZ5258B | LEADSILICON | 0.3 | 34.2 | 37.8 | 3.4 | 0.1 | SOT-23 | |
| MMBZ5259B | LEADSILICON | 0.3 | 37.05 | 40.95 | 3.2 | 0.1 | SOT-23 | |
| MMBZ5231C | LEADSILICON | 0.3 | 5 | 5.2 | 20 | 5 | SOT-23 | |
| MMBZ5232C | LEADSILICON | 0.3 | 5.49 | 5.71 | 20 | 5 | SOT-23 |