| PartNumber | MPSA18 | MPSA18RLRA | MPSA18G |
| Description | Bipolar Transistors - BJT NPN Gen Pur SS | Bipolar Transistors - BJT 200mA 45V NPN | Bipolar Transistors - BJT 200mA 45V NPN Low Noise |
| Manufacturer | Central Semiconductor | ON Semiconductor | ON Semiconductor |
| Product Category | Bipolar Transistors - BJT | Bipolar Transistors - BJT | Bipolar Transistors - BJT |
| RoHS | Y | N | Y |
| Mounting Style | Through Hole | Through Hole | Through Hole |
| Package / Case | TO-92-3 | TO-92-3 | TO-92-3 |
| Transistor Polarity | NPN | NPN | NPN |
| Configuration | Single | Single | Single |
| Collector Emitter Voltage VCEO Max | 45 V | 45 V | 45 V |
| Collector Base Voltage VCBO | 45 V | 45 V | 45 V |
| Emitter Base Voltage VEBO | 6.5 V | 6.5 V | 6.5 V |
| Gain Bandwidth Product fT | 100 MHz | 160 MHz | 160 MHz |
| Series | MPSA | - | - |
| DC Current Gain hFE Max | 1500 | - | - |
| Packaging | Bulk | Reel | Bulk |
| Brand | Central Semiconductor | ON Semiconductor | ON Semiconductor |
| Continuous Collector Current | 10 mA | 0.2 A | 0.2 A |
| DC Collector/Base Gain hfe Min | 500 | 400 | 400 |
| Pd Power Dissipation | 625 mW | 625 mW | 625 mW |
| Product Type | BJTs - Bipolar Transistors | BJTs - Bipolar Transistors | BJTs - Bipolar Transistors |
| Factory Pack Quantity | 2500 | 2000 | 5000 |
| Subcategory | Transistors | Transistors | Transistors |
| Part # Aliases | MPSA18 PBFREE | - | - |
| Unit Weight | 0.016000 oz | - | - |
| Collector Emitter Saturation Voltage | - | 0.08 V | 0.08 V |
| Maximum DC Collector Current | - | 0.2 A | 0.2 A |
| Minimum Operating Temperature | - | - 55 C | - 55 C |
| Maximum Operating Temperature | - | + 150 C | + 150 C |
| Height | - | 5.33 mm | 5.33 mm |
| Length | - | 5.2 mm | 5.2 mm |
| Width | - | 4.19 mm | 4.19 mm |