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| Part Number | MMSZ5226B | MMSZ5229B | MMSZ5228B | MMSZ5226BS | MMSZ5221B | MMSZ5223B | MMSZ5225B | 
|---|---|---|---|---|---|---|---|
| Manufacturer | onsemi | Fairchild Semiconductor | Fairchild Semiconductor | Rectron USA | Rectron USA | Rectron USA | SMC Diode Solutions | 
| Product Status | Obsolete | Active | Active | Active | Active | Active | Active | 
| Voltage - Zener (Nom) (Vz) | 3.3 V | 4.3 V | 3.9 V | 3.3 V | 2.4 V | 2.7 V | 3 V | 
| Tolerance | ±5% | ±5% | ±5% | ±5% | ±5% | ±5% | ±5% | 
| Power - Max | 500 mW | 500 mW | 500 mW | 500 mW | 500 mW | 500 mW | 500 mW | 
| Impedance (Max) (Zzt) | 28 Ohms | 23 Ohms | 24 Ohms | 30 Ohms | 30 Ohms | 30 Ohms | 30 Ohms | 
| Current - Reverse Leakage @ Vr | 25 µA @ 1 V | 5 µA @ 1 V | 10 µA @ 1 V | - | - | - | 50 µA @ 1 V | 
| Voltage - Forward (Vf) (Max) @ If | 900 mV @ 10 mA | 900 mV @ 10 mA | 900 mV @ 10 mA | - | - | - | 900 mV @ 10 mA | 
| Operating Temperature | -55°C ~ 150°C | - | - | - | - | - | -55°C ~ 150°C (TJ) | 
| Mounting Type | Surface Mount | Surface Mount | Surface Mount | Surface Mount | Surface Mount | Surface Mount | Surface Mount | 
| Package / Case | SOD-123 | SOD-123F | SOD-123F | SC-76, SOD-323 | SOD-123 | SOD-123 | SOD-123 | 
| Supplier Device Package | SOD-123 | SOD-123F | SOD-123F | SOD-323 | SOD-123 | SOD-123 | SOD-123 |