What is BF245A?


This is JFET VHF/UHF AMPLIFIER.

A amplifier is an electronic circuit that amplifies or increases the voltage of an electrical signal. The input signal is usually a low-level voltage, and the output signal is a higher-level voltage with the same waveform as the input signal.


[PDF] Complete Technical Details can be found in the BF245A datasheet provided at this page.

Summary in PDF File


BF244 A B C CASE 29 02 STYLE 22 TO 92 TO 226AA MAXIMUM RATINGS Rating Drain Source Voltage Drain Gate Voltage Gate Source Voltage Drain Current Forward Gate Current Total Device Dissipation Ta 25 C Derate above 25 C Storage Channel Temperature Range Symbol VDS vdg vgs id G f PD Tstq Value 30 30 30 100 10 360 2 88 65 to 150 Unit Vdc Vdc Vdc mAdc mAdc mW mW C C ELECTRICAL CHARACTERISTICS TA 25 C unless otherwise noted Characteristic Symbol OFF CHARACTERISTICS Gate Source Breakdown Voltage OG 1 0uAdc Vds 0 V BR GSS Gate Source Vds 15 Vdc Id 200 LiA BF245 1 BF244 2 BF245A BF244A BF245B BF244B BF245C BF244C vgs Gate Source Cutoff Voltage Vds 15 Vdc Id 10 nA VGS off Gate Reverse Current Vqs 20 vdc v D s o ON CHARACTERISTICS IGSS Zero Gate Voltage Drain Current v D s 15 vdc vgs o SMALL SIGNAL CHARACTERISTICS BF245 1 BF244 2 BF245A BF244A BF245B BF244B BF245C BF244C IDSS Forward Transfer Admittance Vd

Datasheet Download (PDF)


[ Detailed Data ]


Q: What is a voltage amplifier, and how does it work?
A: A voltage amplifier is an electronic circuit that increases the amplitude of an input voltage signal. It does this by using active or passive components to amplify the input signal, making it stronger and increasing its voltage level. The output voltage of the amplifier is proportional to the input voltage, and the amplification factor is determined by the circuit design.

Q: What are the types of voltage amplifiers?
A: There are many types of voltage amplifiers, including operational amplifiers (op-amps), transistor amplifiers, vacuum tube amplifiers, and integrated circuit (IC) amplifiers. Each type of amplifier has its unique design and application.

Q: What is the gain of a voltage amplifier?
A: The gain of a voltage amplifier is the ratio of the output voltage to the input voltage. It is typically expressed in decibels (dB) or as a numeric ratio.

Q: What is the frequency response of a voltage amplifier?
A: The frequency response of a voltage amplifier is the range of frequencies that the amplifier can amplify without significant distortion or attenuation. It is determined by the circuit design and the characteristics of the active and passive components used.



Manufacturers : Motorola Semiconductors

MOTOROLA - BF245A Datasheet PDF

MOTOROLA BF245A AMPLIFIER

JFET VHF/UHF AMPLIFIER

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Datasheet BF245A.PDF DownLoad ( MOTOROLA )


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