The 1N4731A is a 1 watt zener diode in a DO-41 package.
| Specifications: | |
| Package / Case | DO-41 | 
| Transistor Polarity | Black Color Band Denotes CATHODE | 
| Nominal Zener Voltage Vz | 4.3V | 
| Tested Current Izt | 58mA | 
| Maximum Zener Impedance Zzt | 9Ω | 
| Power Dissipation Pd | 1W | 
| Maximum Reverse Leakage Current Ir | 10µA | 
Note: All Specification will vary on manufacture products.
 
    
             
 
  
 