Bipolar Transistors

Bipolar Transistors are a solid state, three-pin devices made from three layers of silicon. A bipolar transistor is designed to amplify current, bipolar transistors can also function as a switch. There are two main types of transistor, PNP (positive negative positive) or NPN (negative positive-negative).

How a Bipolar transistor is made

Bipolar transistors are constructed by joining two signal diodes back to back creating two PN junctions connected in series, sharing a common P or N terminal. By nature, silicon does not normally conduct electricity well. However, when silicon is treated with certain chemicals or impurities we can make the material and electrons behave in a different way. This process is called doping. The doping process improves the semiconductors ability to conduct electricity.

How do bipolar transistors work?

Bipolar transistors have two possible functions, switching, and amplification. Due to the devices three layers of doped semiconductor material, supplying the transistor with a signal voltage enables the discrete component to act as an insulator or a conductor. This clever change provides the transistors with two basic functions, switching (digital) electronics or amplification (analog) electronics.

Transistors are available in panel, surface and through-hole mounting options in plastic package or metal can versions. All have three terminals or pins, the Base, the Collector, and the Emitter.

They are also available as;

  • Digital transistors - are made of a semiconductor material, usually silicon, which conducts the current (or electricity) with little resistance. They also tend to have at least three terminals for easy connection to an external circuit.
  • UJT transistors - constructed of a bar of lightly dope N type silicone with a small piece of heavily doped P type material attached to one side. Since the silicon bar is lightly dope it has very high resistance.

Applications of bipolar transistors?

Transistors are one of the most widely used discrete components in electronic designs and circuits. Transistors are used for the amplification of all types of electrical signals in circuits made up of individual components rather than ICs (integrated circuits).


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Omschrijving Prijs Transistor Type Maximum DC Collector Current Maximum Collector Emitter Voltage Package Type Mounting Type Maximum Power Dissipation Transistor Configuration Maximum Collector Base Voltage Maximum Emitter Base Voltage Maximum Operating Frequency Pin Count Number of Elements per Chip Dimensions Minimum Operating Temperature
RS-stocknr. 169-7853
FabrikantnummerDSC2G0300L
FabrikantPanasonic
€ 0,08
Each (On a Reel of 3000)
Aantal stuks
NPN 50 mA 20 V Mini3 G3 B Surface Mount 200 mW Single 30 V 3 V 1600 MHz 3 1 2.9 x 1.5 x 1.1mm -
RS-stocknr. 168-3475
FabrikantnummerDSA900100L
FabrikantPanasonic
€ 0,066
Each (On a Reel of 3000)
Aantal stuks
PNP 100 mA 50 V SSMini3 F3 B Surface Mount 125 mW Single -60 V -7 V 150 MHz 3 1 1.6 x 0.85 x 0.6mm -
RS-stocknr. 168-3479
FabrikantnummerDSC7003S0L
FabrikantPanasonic
€ 0,13
Each (On a Reel of 1000)
Aantal stuks
NPN 1 A 50 V MiniP3 F2 B Surface Mount 1 W Single 60 V 5 V 170 MHz 3 1 4.5 x 2.5 x 1.5mm -
RS-stocknr. 749-8205
FabrikantnummerDSC2G0300L
FabrikantPanasonic
€ 0,231
Each (In a Pack of 20)
Aantal stuks
NPN 50 mA 20 V Mini3 G3 B Surface Mount 200 mW Single 30 V 3 V 1600 MHz 3 1 2.9 x 1.5 x 1.1mm -
RS-stocknr. 168-3478
FabrikantnummerDSC700300L
FabrikantPanasonic
€ 0,13
Each (On a Reel of 1000)
Aantal stuks
NPN 1 A 50 V MiniP3 F2 B Surface Mount 1 W Single 60 V 5 V 170 MHz 3 1 4.5 x 2.5 x 1.5mm -
RS-stocknr. 169-7934
FabrikantnummerDMC5610L0R
FabrikantPanasonic
€ 0,08
Each (On a Reel of 3000)
Aantal stuks
NPN - 50 V SMini5 F3 B Surface Mount 150 mW Common Emitter - 50 V - 5 2 2 x 1.25 x 0.6mm -
RS-stocknr. 760-3088
FabrikantnummerDMC5610L0R
FabrikantPanasonic
€ 0,109
Each (On a Tape of 25)
Aantal stuks
NPN - 50 V SMini5 F3 B Surface Mount 150 mW Common Emitter - 50 V - 5 2 2 x 1.25 x 0.6mm -
RS-stocknr. 168-3503
FabrikantnummerDRC2143T0L
FabrikantPanasonic
€ 0,056
Each (On a Reel of 3000)
Aantal stuks
NPN - 50 V Mini3 G3 B Surface Mount 200 mW Single - - - 3 1 2.9 x 1.5 x 1.1mm -
RS-stocknr. 698-7105
FabrikantnummerDSC300100L
FabrikantPanasonic
€ 0,022
Each (In a Pack of 50)
Aantal stuks
NPN 100 mA 50 V SSSMini3 F2 B Surface Mount 100 mW Single 60 V 7 V 150 MHz 3 1 1.2 x 0.8 x 0.47mm -
RS-stocknr. 168-3653
FabrikantnummerDSC7101S0L
FabrikantPanasonic
€ 0,097
Each (On a Reel of 1000)
Aantal stuks
NPN 500 mA 80 V MiniP3 F2 B Surface Mount 1 W Single 80 V 5 V 150 MHz 3 1 4.5 x 2.5 x 1.5mm -
RS-stocknr. 168-3616
FabrikantnummerDRA2543E0L
FabrikantPanasonic
€ 0,327
Each (On a Reel of 3000)
Aantal stuks
PNP - 50 V Mini3 G3 B Surface Mount 200 mW Single - - - 3 1 2.9 x 1.5 x 1.1mm -
RS-stocknr. 168-3480
FabrikantnummerDSC900100L
FabrikantPanasonic
€ 0,069
Each (On a Reel of 3000)
Aantal stuks
NPN 100 mA 50 V SSMini3 F3 B Surface Mount 125 mW Single 60 V 7 V 150 MHz 3 1 1.6 x 0.85 x 0.6mm -
RS-stocknr. 168-3380
FabrikantnummerDSC300100L
FabrikantPanasonic
€ 0,022
Each (On a Reel of 10000)
Aantal stuks
NPN 100 mA 50 V SSSMini3 F2 B Surface Mount 100 mW Single 60 V 7 V 150 MHz 3 1 1.2 x 0.8 x 0.47mm -
RS-stocknr. 168-3364
FabrikantnummerDSC200100L
FabrikantPanasonic
€ 0,02
Each (On a Reel of 3000)
Aantal stuks
NPN 100 mA 50 V Mini3 G3 B Surface Mount 200 mW Single 60 V 7 V 150 MHz 3 1 2.9 x 1.5 x 1.1mm -
RS-stocknr. 711-5770
FabrikantnummerDSC7Q01Q0L
FabrikantPanasonic
€ 0,099
Each (In a Pack of 10)
Aantal stuks
NPN 1 A 80 V MiniP3 F2 B Surface Mount 1 W Single 100 V 5 V - 3 2 4.5 x 2.5 x 1.5mm -
RS-stocknr. 168-3657
FabrikantnummerDSC7Q01Q0L
FabrikantPanasonic
€ 0,097
Each (On a Reel of 1000)
Aantal stuks
NPN 1 A 80 V MiniP3 F2 B Surface Mount 1 W Single 100 V 5 V - 3 2 4.5 x 2.5 x 1.5mm -
RS-stocknr. 710-6158
FabrikantnummerDRC2543E0L
FabrikantPanasonic
€ 0,044
Each (In a Pack of 20)
Aantal stuks
NPN - 50 V Mini3 G3 B Surface Mount 200 mW Single - - - 3 1 2.9 x 1.5 x 1.1mm -
RS-stocknr. 707-4275
FabrikantnummerDSA900100L
FabrikantPanasonic
€ 0,284
Each (In a Pack of 50)
Aantal stuks
PNP 100 mA 50 V SSMini3 F3 B Surface Mount 125 mW Single -60 V -7 V 150 MHz 3 1 1.6 x 0.85 x 0.6mm -
RS-stocknr. 698-0407
FabrikantnummerDSC200100L
FabrikantPanasonic
€ 0,022
Each (In a Pack of 100)
Aantal stuks
NPN 100 mA 50 V Mini3 G3 B Surface Mount 200 mW Single 60 V 7 V 150 MHz 3 1 2.9 x 1.5 x 1.1mm -
RS-stocknr. 707-4437
FabrikantnummerDRC2143T0L
FabrikantPanasonic
€ 0,196
Each (In a Pack of 50)
Aantal stuks
NPN - 50 V Mini3 G3 B Surface Mount 200 mW Single - - - 3 1 2.9 x 1.5 x 1.1mm -