The SF129 is a bipolar junction transistor (BJT) with an NPN-type configuration. That means the SF129 transistor has a positively charged layer between two negatively charged layers. This transistor has three terminals Base, Collector, and Emitter.
The SF129 transistor symbol shows an arrow from the base into the emitter. This means that the current flows from collector terminal to emitter terminal.
Circuit diagram symbol of the SF129 transistor as follows.
| Transistor Code | SF129 | |
|---|---|---|
| Transistor Type | BJT | |
| Transistor Polarity | NPN | |
| Transistor Material | Silicon(SI) | |
| Collector Power Dissipation (Maximum) | PC | 0.6W |
| Collector-Base Voltage (Maximum) | VCB | 120V |
| Collector-Emitter Voltage (Maximum) | VCE | 80V |
| Collector Current (Maximum) | IC | 0.5A |
| Emitter-Base Voltage (Maximum) | VEB | 7V |
| Forward Current Transfer Ratio (hFE Value) | 28 | |
| Transition Frequency | FT | 60MHz |
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