BJT & Bipolar Transistors

A Bipolar Transistor or BJT (Bipolar Junction Transistor) is a solid state, three-pin device made from three layers of silicon. A BJT 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
A bipolar transistor is made 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.
What does a bipolar transistor do?
As we said before a bipolar transistor has 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.
Types of transistor
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.
Where are bipolar transistors used?
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 Minimum DC Current Gain Transistor Configuration Maximum Collector Base Voltage Maximum Emitter Base Voltage Maximum Operating Frequency Pin Count Number of Elements per Chip Automotive Standard
RS庫存編號 168-3701
製造零件編號DSC2002R0L
BrandPanasonic
HK$0.993
個 (在毎卷:3000)
單位
NPN 500 mA 50 V Mini3 G3 B B Surface Mount 200 mW 120 Single 60 V 5 V 160 MHz 3 1 -
RS庫存編號 715-9702
製造零件編號DMC201A00R
BrandPanasonic
HK$4.697
/個 (每包:10個)
單位
NPN 500 mA 20 V Mini5 G3 B Surface Mount 300 mW 200 Common Emitter 25 V 12 V 150 MHz 5 2 -
RS庫存編號 168-3475
製造零件編號DSA900100L
BrandPanasonic
HK$0.65
個 (在毎卷:3000)
單位
PNP 100 mA 50 V SSMini3 F3 B Surface Mount 125 mW 210 Single -60 V -7 V 150 MHz 3 1 -
RS庫存編號 168-3721
製造零件編號DMC201A00R
BrandPanasonic
HK$2.07
個 (在毎卷:3000)
單位
NPN 500 mA 20 V Mini5 G3 B Surface Mount 300 mW 200 Common Emitter 25 V 12 V 150 MHz 5 2 -
RS庫存編號 707-4275
製造零件編號DSA900100L
BrandPanasonic
HK$2.62
/個 (每包:50個)
單位
PNP 100 mA 50 V SSMini3 F3 B Surface Mount 125 mW 210 Single -60 V -7 V 150 MHz 3 1 -
RS庫存編號 711-5770
製造零件編號DSC7Q01Q0L
BrandPanasonic
HK$6.51
/個 (每包:10個)
單位
NPN 1 A 80 V MiniP3 F2 B Surface Mount 1 W 4000 Single 100 V 5 V - 3 2 -
RS庫存編號 711-5752
製造零件編號DSC7102S0L
BrandPanasonic
HK$5.978
/個 (每包:10個)
單位
NPN 1 A 80 V MiniP3 F2 B Surface Mount 1 W 170 Single 80 V 5 V 180 MHz 3 1 -
RS庫存編號 168-3582
製造零件編號DMC202010R
BrandPanasonic
HK$1.058
個 (在毎卷:3000)
單位
NPN 100 mA 50 V Mini5 G3 B Surface Mount 300 mW 210 Common Base 60 V 7 V 150 MHz 5 2 -
RS庫存編號 168-3699
製造零件編號DMG204010R
BrandPanasonic
HK$1.39
個 (在毎卷:3000)
單位
NPN + PNP 100 mA 50 V Mini6 G4 B Surface Mount 300 mW 210 (NPN), 210 (PNP) Isolated - -7 (PNP) V, 7 (NPN) V - 6 2 -
RS庫存編號 715-9730
製造零件編號DMC562000R
BrandPanasonic
HK$2.756
/個 (每包:20個)
單位
NPN 100 mA 50 V SMini5 F3 B Surface Mount - - Common Base - - - 5 2 -
RS庫存編號 713-2851
製造零件編號DSC200200L
BrandPanasonic
HK$2.83
/個 (每包:20個)
單位
NPN 500 mA 50 V Mini3 G3 B B Surface Mount 200 mW 120 Single 60 V 5 V 160 MHz 3 1 -
RS庫存編號 168-3727
製造零件編號DMC562000R
BrandPanasonic
HK$1.308
個 (在毎卷:3000)
單位
NPN 100 mA 50 V SMini5 F3 B Surface Mount - - Common Base - - - 5 2 -
RS庫存編號 168-3480
製造零件編號DSC900100L
BrandPanasonic
HK$0.702
個 (在毎卷:3000)
單位
NPN 100 mA 50 V SSMini3 F3 B Surface Mount 125 mW 210 Single 60 V 7 V 150 MHz 3 1 -
RS庫存編號 168-3381
製造零件編號DSC500100L
BrandPanasonic
HK$0.787
個 (在毎卷:3000)
單位
NPN 100 mA 50 V SMini3 F2 B Surface Mount 150 mW 210 Single 60 V 7 V 150 MHz 3 1 -
RS庫存編號 168-3362
製造零件編號DSC2001R0L
BrandPanasonic
HK$0.885
個 (在毎卷:3000)
單位
NPN 100 mA 50 V Mini3 G3 B Surface Mount 200 mW 210 Single 60 V 7 V 150 MHz 3 1 -
RS庫存編號 715-9733
製造零件編號DMC561040R
BrandPanasonic
HK$3.078
/個 (每包:20個)
單位
NPN 100 mA 50 V SMini5 F3 B Surface Mount - - Common Emitter - - - 5 2 -
RS庫存編號 168-3478
製造零件編號DSC700300L
BrandPanasonic
HK$1.71
個 (在毎卷:1000)
單位
NPN 1 A 50 V MiniP3 F2 B Surface Mount 1 W 120 Single 60 V 5 V 170 MHz 3 1 -
RS庫存編號 698-0400
製造零件編號DSC2001R0L
BrandPanasonic
HK$0.881
/個 (每包:100個)
單位
NPN 100 mA 50 V Mini3 G3 B Surface Mount 200 mW 210 Single 60 V 7 V 150 MHz 3 1 -
RS庫存編號 698-0407
製造零件編號DSC200100L
BrandPanasonic
HK$0.679
/個 (每包:100個)
單位
NPN 100 mA 50 V Mini3 G3 B Surface Mount 200 mW 210 Single 60 V 7 V 150 MHz 3 1 -
RS庫存編號 168-3652
製造零件編號DSC7102S0L
BrandPanasonic
HK$4.283
個 (在毎卷:1000)
單位
NPN 1 A 80 V MiniP3 F2 B Surface Mount 1 W 170 Single 80 V 5 V 180 MHz 3 1 -