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 |
|---|---|---|---|---|---|---|---|---|
| SMF4747A | LEADSILICON | SOD-123FL | 1 | 12.5 | 0.1 | |||
| SMF4748A | LEADSILICON | SOD-123FL | 1 | 11.5 | 0.1 | |||
| SMF4749A | LEADSILICON | SOD-123FL | 1 | 10.5 | 0.1 | |||
| SMF4750A | LEADSILICON | SOD-123FL | 1 | 9.5 | 0.1 | |||
| SMF4751A | LEADSILICON | SOD-123FL | 1 | 8.5 | 0.1 | |||
| SMF4752A | LEADSILICON | SOD-123FL | 1 | 7.5 | 0.1 | |||
| SMF4753A | LEADSILICON | SOD-123FL | 1 | 7 | 0.1 | |||
| SMF4754A | LEADSILICON | SOD-123FL | 1 | 6.5 | 0.1 | |||
| SMF4755A | LEADSILICON | SOD-123FL | 1 | 6 | 0.1 | |||
| SMF4756A | LEADSILICON | SOD-123FL | 1 | 5.5 | 0.1 | |||
| SMF4757A | LEADSILICON | SOD-123FL | 1 | 5 | 0.1 | |||
| SMF4758A | LEADSILICON | SOD-123FL | 1 | 4.5 | 0.1 | |||
| SMF4759A | LEADSILICON | SOD-123FL | 1 | 4 | 0.1 | |||
| SMF4760A | LEADSILICON | SOD-123FL | 1 | 3.7 | 0.1 | |||
| SMF4761A | LEADSILICON | SOD-123FL | 1 | 3.3 | 0.1 | |||
| SMF4762A | LEADSILICON | SOD-123FL | 1 | 3 | 0.1 | |||
| SMF4763A | LEADSILICON | SOD-123FL | 1 | 2.8 | 0.1 | |||
| SMF4764A | LEADSILICON | SOD-123FL | 1 | 2.5 | 0.1 | |||
| SMF5913A | LEADSILICON | SOD-123FL | 1.5 | 3.135 | 3.465 | 113.6 | 100 | |
| SMF5914A | LEADSILICON | SOD-123FL | 1.5 | 3.42 | 3.78 | 104.2 | 75 |