The 1N4448W is a fast-switching surface-mount diode ideally suited for automated insertion in general-purpose switching applications. It offers high conductance and is available in a surface-mount SOD123 package.
| Characteristic | Symbol | Value | Unit | Test Condition |
| Maximum Ratings | ||||
| Non-Repetitive Peak Reverse Voltage | VRM | 100 | V | |
| Peak Repetitive Reverse Voltage | VRRM | 75 | V | |
| Working Peak Reverse Voltage | VRWM | 75 | V | |
| DC Blocking Voltage | VR | 75 | V | |
| RMS Reverse Voltage | VR(RMS) | 53 | V | |
| Forward Continuous Current | IFM | 500 | mA | |
| Non-Repetitive Peak Forward Surge Current | IFSM | 4.0 (1.0s), 1.0 (1.0ms) | A | |
| Thermal Characteristics | ||||
| Power Dissipation | PD | 400 | mW | Note 5 |
| Thermal Resistance Junction to Ambient Air | RJA | 315 | C/W | Note 5 |
| Operating and Storage Temperature Range | TJ, TSTG | -55 to +150 | C | |
| Electrical Characteristics | ||||
| Reverse Breakdown Voltage | V(BR)R | 75 | V | Min, IR = 10A |
| Forward Voltage | VFM | 0.62 | V | Max, IF = 5.0mA |
| 0.72 | Max, IF = 10mA | |||
| 0.855 | Max, IF = 100mA | |||
| 1.0 | Max, IF = 150mA | |||
| Peak Reverse Current | IRM | 2.5 | A | Max, VR = 75V |
| 50 | Max, VR = 75V, TJ = +150C | |||
| 30 | Max, VR = 25V, TJ = +150C | |||
| Total Capacitance | CT | 4.0 | pF | Max, VR = 0, f = 1.0MHz |
| Reverse Recovery Time | tRR | 4.0 | ns | Max, IF = IR = 10mA, IRR = 0.1 x IR, RL = 100 |