The KT218D9 is a bipolar junction transistor (BJT) with an PNP-type configuration. That means the KT218D9 transistor has a negatively charged layer between two positively charged layers. This transistor has three terminals Base, Collector, and Emitter.
The KT218D9 transistor symbol shows an arrow from the emitter into the base. This means that the current flows from emitter to collector terminal.
Circuit diagram symbol of the KT218D9 transistor as follows.
| Transistor Code | KT218D9 | |
|---|---|---|
| Transistor Type | BJT | |
| Transistor Polarity | PNP | |
| Transistor Material | Silicon(SI) | |
| Collector Power Dissipation (Maximum) | PC | 0.2W |
| Collector-Base Voltage (Maximum) | VCB | 30V |
| Collector Current (Maximum) | IC | 0.05A |
| Operating Junction Temperature (Maximum) | TJ | 175°C |
| Emitter-Base Voltage (Maximum) | VEB | 7V |
| Forward Current Transfer Ratio (hFE Value) | 80 | |
| Transition Frequency | FT | 5MHz |
| Collector Capacitance | CC | 15pF |
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