BC307 Transistor Pinout, Equivalent, Features, Applications and Other Data

BC307 is a TO-92 package PNP transistor designed to use in general purpose applications. This article contains all the important information about this device such as BC307 transistor pinout, equivalent, features, applications and other data.

 

Absolute Maximum Ratings:

• Package Type: TO-92
• Transistor Type: PNP
• Max Collector Current(I_C): -100mA
• Max Collector-Emitter Voltage (V_CE): -45V
• Max Collector-Base Voltage (V_CB): -50V
• Max Emitter-Base Voltage (V_CB): -5V
• Max Collector Dissipation (Pc): 500 miliWatt
• Max Transition Frequency (f_T): 130 MHz
• Minimum & Maximum DC Current Gain (h_FE): 120 – 800
• Max Storage & Operating temperature Should Be: -55 to +150 Centigrade

 

NPN Complementary:

NPN Complementary of BC307 is BC237

 

Replacement and Equivalent:

BC556, BC557, BC560 (pin layout of these alternative transistor may be different from the BC307 so it is important to check the pin configuration before using it in your circuit.)

 

BC307 Transistor Explained / Description:

BC307 is a general purpose transistor designed to use in general purpose switching and amplification applications. Some main qualities of the transistor are a noise figure of 10dB, transition frequency of up to 130MHz, and DC current gain of up to 800. The noise figure of 10dB makes it ideal to use in applications where noise reduction from the signal is important but if you require more noise reduction then you can use BC309 which noise figure is typically 2dB to max 4dB. The transition frequency of up to 130MHz makes it a device that can be used for wide frequency spectrum and makes it ideal to use in different types of RF circuits under this frequency and the again gain feature makes it ideal to use in applications that require amplification of low gain signal.

Now looking at the absolute maximum ratings of the transistor the collector-emitter voltage (VCEO) is -45V, collector current is -100mA, emitter-base voltage is -5V and collector power 500mW.

The transistor comes in three different hFE values which can be determined by the first alphabet after BC307. So if that alphabet is “A” means its DC current gain is from 120 to 220. If that alphabet is “B” then its gain will be from 180 to 460 and if that alphabet is “C” then its DC current gain will be from 380 to 800.

 

Where We Can Use it & How to Use:

BC307 can be used in wide variety of general purpose switching and amplification applications. With its 100mA of collector current you can drive variety of small loads such as relays, DC motors, LEDs, high power transistors etc., and with its high gain low noise and high transition frequency it can be used in variety of amps, preamps and RF circuits.

The using procedure of this transistor is same as we use any other BJT transistor.

 

Applications:

Sensor Circuits

Darlington Pairs

Audio Amplifier Stages

Audio Preamplifier Circuits

Audio amplifier circuits

Signal Amplification Circuits

Switching Loads under 100mA

RF Circuits

 

Safe Operating Guidelines:

To safely operate the transistor it is important to consider these things in mind.

• First of all do not drive the transistor on its absolute maximum ratings and stay minimum 20% below from these ratings.
• So according to the above guideline of using it 20% below from its max ratings the maximum collector current of the transistor is -100mA but we will only use -80mA by driving the load under -80mA.
• The maximum collector-emitter voltage of the transistor is -100V so we will not use it for the load more than -80V.
• The maximum storage and operating temperature range of the transistor is -55°C to 150°C, therefore we will not expose the transistor to temperature more or less than this limits and also make sure that the internal temperature should also not cross these limits.

 

Datasheet:

To download the datasheet just copy and paste the below link in your browser.

https://www.mouser.com/datasheet/2/308/BC309-1190467.pdf