BFY51 Transistor: Difference between revisions
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* Current handling capacity 1 Amp max. | * Current handling capacity 1 Amp max. | ||
* Amplification (gain) greater than 50. | * Amplification (gain) greater than 50. | ||
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<span style="color: green">'''Note:''' | |||
Older Transistors such BFY51 may sometimes be difficult to obtain but 2N3053 is a good substitute ''(i.e. it is NPN, can operate with similar voltage and current and has the same TO-5 metal case and pin-out)''. BC548B is a another, lower power, equivalent with a TO-92 plastic case but many others exist and can be found in transistor equivalents tables). | |||
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[[Category:Secondary]] | [[Category:Secondary]] | ||
[[Category:Electronics Components]] | [[Category:Electronics Components]] | ||
Revision as of 10:06, 3 July 2016
The BFY51 Collector is connected to the positive (+ve) supply via the load. NB If the load is inductive i.e. has coil windings such as a relay, solenoid or motor, then it is usual to connect a diode across it to prevent the Back EMF from damaging the transistor. (Cathode to supply). The input is connected to the Base via a limiting resistor (typically 1K). The Emitter is connected to the negative (-ve) supply (0V).
Uses: As current amplifiers and electronic switches, for example, Motor Drive Amplifiers, Audio Amplifiers.
Data: Voltage between Collector and Emitter 6 - 30Volts max.
- Power handling capacity 800mWatts max.
- Current handling capacity 1 Amp max.
- Amplification (gain) greater than 50.
Note: Older Transistors such BFY51 may sometimes be difficult to obtain but 2N3053 is a good substitute (i.e. it is NPN, can operate with similar voltage and current and has the same TO-5 metal case and pin-out). BC548B is a another, lower power, equivalent with a TO-92 plastic case but many others exist and can be found in transistor equivalents tables).