| Part Numbers | Manufacturer Name | Datasheet | Voltage - Zener (Vz) | Tolerance | Power - Max | Impedance (Max) (Zzt) | Reverse Leakage Current@ Vr | Forward Voltage (Vf) (Max) @ If | Operating Temperature | Mounting Type | Package / Case |
|---|---|---|---|---|---|---|---|---|---|---|---|
| 1N4549B | MICROSEMI COMMERCIAL BUSINESS UNIT | 3.9V | ±5% | 500mW | 0.16 Ohm | 150µA @ 500mV | 1.5V @ 10A | -65°C ~ 175°C | Chassis, Stud Mount | DO-203AB, DO-5, Stud | |
| 1N4549RB | MICROSEMI COMMERCIAL BUSINESS UNIT | 3.9V | ±5% | 500mW | 0.16 Ohm | 150µA @ 500mV | 1.5V @ 10A | -65°C ~ 175°C | Chassis, Stud Mount | DO-203AB, DO-5, Stud | |
| 1N4550B | MICROSEMI COMMERCIAL BUSINESS UNIT | 4.3V | ±5% | 500mW | 0.16 Ohm | 150µA @ 500mV | 1.5V @ 10A | -65°C ~ 175°C | Chassis, Stud Mount | DO-203AB, DO-5, Stud | |
| 1N4550RB | MICROSEMI COMMERCIAL BUSINESS UNIT | 4.3V | ±5% | 500mW | 0.16 Ohm | 150µA @ 500mV | 1.5V @ 10A | -65°C ~ 175°C | Chassis, Stud Mount | DO-203AB, DO-5, Stud | |
| 1N4557A | MICROSEMI COMMERCIAL BUSINESS UNIT | 3.9V | ±10% | 50W | 0.16 Ohm | 150µA @ 500mV | 1.5V @ 10A | -65°C ~ 175°C | Through Hole | TO-204AD | |
| 1N4557B | MICROSEMI COMMERCIAL BUSINESS UNIT | 3.9V | ±5% | 50W | 0.16 Ohm | 150µA @ 500mV | 1.5V @ 10A | -65°C ~ 175°C | Through Hole | TO-204AD | |
| 1N4557RB | MICROSEMI COMMERCIAL BUSINESS UNIT | 3.9V | ±5% | 50W | 0.16 Ohm | 150µA @ 500mV | 1.5V @ 10A | -65°C ~ 175°C | Through Hole | TO-204AD | |
| 1N4558A | MICROSEMI COMMERCIAL BUSINESS UNIT | 4.3V | ±10% | 50W | 0.16 Ohm | 150µA @ 500mV | 1.5V @ 10A | -65°C ~ 175°C | Through Hole | TO-204AD | |
| 1N4558B | MICROSEMI COMMERCIAL BUSINESS UNIT | 4.3V | ±5% | 50W | 0.16 Ohm | 150µA @ 500mV | 1.5V @ 10A | -65°C ~ 175°C | Through Hole | TO-204AD | |
| 1N4558RB | MICROSEMI COMMERCIAL BUSINESS UNIT | 4.3V | ±5% | 50W | 0.16 Ohm | 150µA @ 500mV | 1.5V @ 10A | -65°C ~ 175°C | Through Hole | TO-204AD |
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