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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Description Price 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庫存編號 168-3701
製造零件編號DSC2002R0L
BrandPanasonic
TWD3.90
個 (在毎卷:3000)
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NPN 500 mA 50 V Mini3 G3 B B Surface Mount 200 mW Single 60 V 5 V 160 MHz 3 1 2.9 x 1.5 x 1.1mm -
RS庫存編號 707-4317
製造零件編號DSC900100L
BrandPanasonic
TWD10.30
/個 (每包:50個)
單位
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庫存編號 168-3380
製造零件編號DSC300100L
BrandPanasonic
TWD9.60
個 (在毎卷:10000)
單位
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庫存編號 707-4275
製造零件編號DSA900100L
BrandPanasonic
TWD10.40
/個 (每包:50個)
單位
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庫存編號 713-2854
製造零件編號DSC2002R0L
BrandPanasonic
TWD11.60
/個 (每包:20個)
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NPN 500 mA 50 V Mini3 G3 B B Surface Mount 200 mW Single 60 V 5 V 160 MHz 3 1 2.9 x 1.5 x 1.1mm -
RS庫存編號 711-5770
製造零件編號DSC7Q01Q0L
BrandPanasonic
TWD23.70
/個 (每包:10個)
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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庫存編號 707-4301
製造零件編號DSC7003S0L
BrandPanasonic
TWD14.90
/個 (每包:10個)
單位
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庫存編號 698-0407
製造零件編號DSC200100L
BrandPanasonic
TWD3.90
/個 (每包:100個)
單位
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庫存編號 707-4291
製造零件編號DSC700300L
BrandPanasonic
TWD14.40
/個 (每包:10個)
單位
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庫存編號 168-3616
製造零件編號DRA2543E0L
BrandPanasonic
TWD12.90
個 (在毎卷:3000)
單位
PNP - 50 V Mini3 G3 B Surface Mount 200 mW Single - - - 3 1 2.9 x 1.5 x 1.1mm -
RS庫存編號 168-3657
製造零件編號DSC7Q01Q0L
BrandPanasonic
TWD13.80
個 (在毎卷:1000)
單位
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庫存編號 168-3503
製造零件編號DRC2143T0L
BrandPanasonic
TWD4.20
個 (在毎卷:3000)
單位
NPN - 50 V Mini3 G3 B Surface Mount 200 mW Single - - - 3 1 2.9 x 1.5 x 1.1mm -
RS庫存編號 760-3088
製造零件編號DMC5610L0R
BrandPanasonic
TWD4.20
Each (On a Tape of 25)
單位
NPN - 50 V SMini5 F3 B Surface Mount 150 mW Common Emitter - 50 V - 5 2 2 x 1.25 x 0.6mm -
RS庫存編號 169-7853
製造零件編號DSC2G0300L
BrandPanasonic
TWD3.20
個 (在毎卷:3000)
單位
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庫存編號 749-8205
製造零件編號DSC2G0300L
BrandPanasonic
TWD9.20
/個 (每包:20個)
單位
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庫存編號 710-6149
製造零件編號DRA2543E0L
BrandPanasonic
TWD12.90
/個 (每包:20個)
單位
PNP - 50 V Mini3 G3 B Surface Mount 200 mW Single - - - 3 1 2.9 x 1.5 x 1.1mm -
RS庫存編號 168-3478
製造零件編號DSC700300L
BrandPanasonic
TWD6.80
個 (在毎卷:1000)
單位
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庫存編號 168-3619
製造零件編號DRC2543E0L
BrandPanasonic
TWD5.50
個 (在毎卷:3000)
單位
NPN - 50 V Mini3 G3 B Surface Mount 200 mW Single - - - 3 1 2.9 x 1.5 x 1.1mm -
RS庫存編號 710-6158
製造零件編號DRC2543E0L
BrandPanasonic
TWD13.70
/個 (每包:20個)
單位
NPN - 50 V Mini3 G3 B Surface Mount 200 mW Single - - - 3 1 2.9 x 1.5 x 1.1mm -
RS庫存編號 168-3480
製造零件編號DSC900100L
BrandPanasonic
TWD2.80
個 (在毎卷:3000)
單位
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 -