The 2N3771 is a high power switching and amplifier transistor in a TO-3 package.
| Specifications: | |
| Package / Case | TO-3 | 
| Transistor Polarity | NPN | 
| Collector−Emitter Voltage Vceo | 40V | 
| Minimum hfe @ Current Ic @ Vceo | 15 @ 15A @ 4Vdc | 
| Minimum Base Current Ib | 7.5A | 
| Maximum Current Ic | 30A | 
Note: All Specification will vary on manufacture products.
 
    
             
 
  
 