| Distributor | Stock | Pricing | MOQ | PKG | Lead Time | Date Code | On Order Quantity | On Order Delivery | |
|---|---|---|---|---|---|---|---|---|---|
|
2,367 pcs
|
2367 pcs | On Request | 1 | On Request | On Request | On Request | On Request | On Request |
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| Manufacturer Name | |
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The BF494B is an NPN medium frequency transistor manufactured by NXP Semiconductors, designed for various HF applications. This transistor operates with a low current maximum of 30 mA and a low voltage maximum of 20 V.
Key electrical characteristics include a DC current gain (hFE) ranging from 35 to 125 at 1 mA collector current and 10 V collector-emitter voltage, and a transition frequency (fT) of at least 120 MHz under similar conditions. The collector-base voltage (VCBO) is rated up to 30 V, and the collector-emitter voltage (VCEO) up to 20 V.
This component is housed in a TO-92 or SOT54 plastic package, making it suitable for through-hole mounting. Its applications include HF circuits in radio and television receivers, FM tuners, low noise AM mixer-oscillators, and IF amplifiers in AM/FM receivers.
The BF494B is specified with a total power dissipation of up to 300 mW at an ambient temperature of 25 °C. Thermal resistance from junction to ambient is 420 K/W.
| Qty | Low | High |
|---|---|---|
| 1+ | $8.20 | $8.20 |
Estimated market price range - modelled values for guidance only, not live distributor offers.
The maximum collector-emitter voltage (VCEO) for the BF494B is 20 V.
The maximum collector current (ICM) for the BF494B is 30 mA.
The DC current gain (hFE) for the BF494B is between 35 and 125 at 1 mA collector current and 10 V collector-emitter voltage.
The transition frequency (fT) for the BF494B is at least 120 MHz at 1 mA collector current and 10 V collector-emitter voltage.
The BF494B is available in a TO-92; SOT54 plastic package.
The BF494B is used in HF applications such as radio and television receivers, FM tuners, low noise AM mixer-oscillators, and IF amplifiers.
