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.


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



Absolute Maximum Ratings:

  • Package Type: TO-92
  • Transistor Type: PNP
  • Max Collector Current(IC): -100mA
  • Max Collector-Emitter Voltage (VCE): -45V
  • Max Collector-Base Voltage (VCB): -50V
  • Max Emitter-Base Voltage (VCB): -5V
  • Max Collector Dissipation (Pc): 500 miliWatt
  • Max Transition Frequency (fT): 130 MHz
  • Minimum & Maximum DC Current Gain (hFE): 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 BD307. 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:

As mentioned above the BD241C transistor is designed to be used in amplification and switching applications. So there are hundreds of applications that come under these two categories. But BD241C can also be used in variety of other applications. The detailed list of its applications can be found below under “Applications” heading.

The Using procedure of the transistor is same as we use any other BJT transistor.



Motor Drivers

Inverter Circuits


Battery discharging circuits

Relay drivers circuits

Battery charger circuits

DC to AC Converters

Audio Amplifiers

Power converter circuits

Temperature Control Circuits

Variety of General Purpose Applications


Safe Operating Guidelines:

Here are some guidelines for using the transistor safely.

  • To increase the life span of the transistor it is important not to use it on its absolute maximum ratings and always stay 20% below from its max ratings.
  • The collector-emitter voltage of the transistor is 100V so according to the 20% rule you should drive load under 80V.
  • Max collector current of the transistor is 3A but we will only use 2.4A.
  • The operating and store temperature is from -65°C to 150°C, so do not use it in any applications in which the internal and outer temperature will cross these limits.



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


You may also like...

Leave a Reply

Your email address will not be published. Required fields are marked *