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 |
|---|---|---|---|---|---|---|---|---|
| MMBZ5233C | LEADSILICON | 0.3 | 5.88 | 6.12 | 20 | 5 | SOT-23 | |
| MMBZ5234C | LEADSILICON | 0.3 | 6.08 | 6.32 | 20 | 5 | SOT-23 | |
| MMBZ5235C | LEADSILICON | 0.3 | 6.66 | 6.94 | 20 | 3 | SOT-23 | |
| MMBZ5236C | LEADSILICON | 0.3 | 7.35 | 7.65 | 20 | 3 | SOT-23 | |
| MMBZ5237C | LEADSILICON | 0.3 | 8.04 | 8.36 | 20 | 3 | SOT-23 | |
| MMBZ5238C | LEADSILICON | 0.3 | 8.53 | 8.87 | 20 | 3 | SOT-23 | |
| MMBZ5239C | LEADSILICON | 0.3 | 8.92 | 9.28 | 20 | 3 | SOT-23 | |
| MMBZ5240C | LEADSILICON | 0.3 | 9.8 | 10.2 | 20 | 3 | SOT-23 | |
| MMBZ5241C | LEADSILICON | 0.3 | 10.78 | 11.22 | 20 | 2 | SOT-23 | |
| MMBZ5242C | LEADSILICON | 0.3 | 11.76 | 12.24 | 20 | 1 | SOT-23 | |
| MMBZ5243C | LEADSILICON | 0.3 | 12.74 | 13.26 | 9.5 | 0.5 | SOT-23 | |
| MMBZ5244C | LEADSILICON | 0.3 | 13.72 | 14.28 | 9 | 0.1 | SOT-23 | |
| MMBZ5245C | LEADSILICON | 0.3 | 14.7 | 15.3 | 8.5 | 0.1 | SOT-23 | |
| MMBZ5246C | LEADSILICON | 0.3 | 15.68 | 16.32 | 7.8 | 0.1 | SOT-23 | |
| MMBZ5247C | LEADSILICON | 0.3 | 16.66 | 17.34 | 7.4 | 0.1 | SOT-23 | |
| MMBZ5248C | LEADSILICON | 0.3 | 17.64 | 18.36 | 7 | 0.1 | SOT-23 | |
| MMBZ5249C | LEADSILICON | 0.3 | 18.62 | 19.38 | 6.6 | 0.1 | SOT-23 | |
| MMBZ5250C | LEADSILICON | 0.3 | 19.6 | 20.4 | 6.2 | 0.1 | SOT-23 | |
| SMF1110A | LEADSILICON | 1 | 2.3 | 0.1 | SOD-123FL | |||
| SMF1120A | LEADSILICON | 1 | 2 | 0.1 | SOD-123FL |