The MPSA18 is a low noise transistor in a TO-92 package.
| Specifications: | |
| Package / Case | TO-92 | 
| Transistor Polarity | NPN | 
| Collector-Emitter Voltage Vceo | 45V | 
| hfe @ Ic @ Vce | 500 @ 10mA @5.0V | 
| Power Dissipation Pd | 625mW | 
| Maximum Current Ic | 200mA | 
Note: All Specification will vary on manufacture products.