BC109 NPN Transistor: Pinout, Datasheet pdf and Equivalents
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BC109B datasheet pdf and Unclassified product details from NEW JERSEY SEMICONDUCTOR PRODUCTS INC stock available at Utmel









BC109 is a kind of low-power bipolar transistor. This article mainly covers pinout, datasheet pdf, equivalents, current, and other details about the BC109 transistor. Furthermore, there is a huge range of semiconductors, capacitors, resistors, and ICs in stock. Welcome your RFQ!

Transistor comparison Hybrid Fuzz BC108 BC109 2N2222A
BC109 Pinout

BC109 Pinout
BC109 Description
The BC109 is a silicon planar epitaxial NPN transistor in the TO-18 metal case. It is suitable for use in driver stages, low noise input stages, and signal processing circuits of television receivers. The complementary PNP type is BC179.
The maximum collector to emitter voltage of the transistor is 20V which means that the transistor can drive a maximum load voltage of 20V. Moreover, the maximum collector dissipation is 300mW and the DC gain value is from 200 to 800, it also has a good noise figure of 4dB.
BC109 CAD Model

BC109 Symbol

BC109 Footprint
BC109 Features
Collector emitter voltage (Vce) of 25V
Continuous collector current (Ic) of 200mA
Power dissipation of 600mW
Operating junction temperature range from -65°C to 200°C
Collector emitter saturation voltage of 600mV at Ic=100mA
DC gain of 40 at Ic=10µA
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BC109 Equivalents
BC108, BC107, A158C, BCY65X, BC546, BC547, BC548, BC549, BC560
BC109 Applications
Signal Processing
Power Management
Portable Devices
Consumer Electronics
Audio amplifier Circuits
Any Signal Amplification
Audio Preamplifier
Darlington pair
RF circuits
Switching loads under 100mA
Where and How to use BC109
Because the BC109 is a general-purpose transistor, it can be utilized in any general-purpose application that meets its requirements. It can be used to power loads that draw less than 100 milliamps. It is perfect for audio amplification, preamplification, and any electronic signal amplification because of its low noise figure of 4dB. It's also suited for usage in RF circuits below 100MHz, thanks to the 100MHz transition frequency.
BC109 Package Dimensions

BC109 Package Dimensions
BC109 Manufacturer
New Jersey Semiconductor has been designing, manufacturing, and producing highly reliable electronic devices since 1957. Our mission is to supply you with high-quality, cost-effective discrete devices for commercial, industrial, and military applications.
What is BC109 used for?
The BC109 from Multicomp Pro are through-hole, NPN low power, silicon planar epitaxial transistors in a TO-18 metal can package. This device is used for switching and amplification.
What type of transistor is BC109?
The BC109 transistor is an NPN transistor. The transistor base sits between the collector and the emitter. In the two main types of transistors, the base is made of either positive or negative material.
What transistor can be used instead of bc109?
The tube is 30V, 0.2A, 0.3W, NPN silicon tube. You can use BC584, BC239, BC173, 3DG120A instead.
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