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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กำลังดูสินค้า 1 - 9 รายการจาก 9 รายการ / Viewing 1 - 9 of 9 products
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รายละเอียดสินค้า / Description ราคา / 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 Stock No. 544-822
หมายเลขชิ้นส่วนของผู้ผลิต / Mfr. Part No.2SA2200-TD-E
Brand :Sanyo
THB7.55
Each: (In a Pack of 10)
Units
PNP 3 A -60 V PCP Surface Mount 3.5 W 200 - -60 V -7 V 400 MHz 3 1 -
RS Stock No. 663-8597
หมายเลขชิ้นส่วนของผู้ผลิต / Mfr. Part No.2SC3792-AA
Brand :Sanyo
THB5.80
Each: (In a Pack of 5)
Units
NPN 500 mA 20 V NP Through Hole 500 mW 300 - 50 V 25 V 250 MHz 3 1 -
RS Stock No. 145-3886
หมายเลขชิ้นส่วนของผู้ผลิต / Mfr. Part No.2SA1552S-TL-E
Brand :Sanyo
THB10.18
Each (On a Reel of 700)
Units
- - - - - - - - - - - - - -
RS Stock No. 663-8386
หมายเลขชิ้นส่วนของผู้ผลิต / Mfr. Part No.2SB892T-AE
Brand :Sanyo
THB8.55
Each: (In a Pack of 5)
Units
PNP 2 A -50 V MP Through Hole 1 W 200 - -60 V -6 V 150 MHz 3 1 -
RS Stock No. 663-9272
หมายเลขชิ้นส่วนของผู้ผลิต / Mfr. Part No.2SD1060S
Brand :Sanyo
THB23.00
Each: (In a Pack of 5)
Units
NPN 5 A 50 V TO-220 Through Hole 1.75 W 140 - 60 V 6 V 30 MHz 3 1 -
RS Stock No. 663-8276
หมายเลขชิ้นส่วนของผู้ผลิต / Mfr. Part No.2SA2012-TD-E
Brand :Sanyo
THB11.33
Each: (In a Pack of 5)
Units
PNP 5 A -30 V PCP Surface Mount 1.3 W 200 - -30 V -5 V 350 MHz 3 1 -
RS Stock No. 663-8803
หมายเลขชิ้นส่วนของผู้ผลิต / Mfr. Part No.2SD1623S-TD-E
Brand :Sanyo
THB12.00
Each: (In a Pack of 5)
Units
NPN 2 A 50 V PCP Surface Mount 1.3 W 100 - 60 V 6 V 150 MHz 3 1 -
RS Stock No. 663-9017
หมายเลขชิ้นส่วนของผู้ผลิต / Mfr. Part No.FP203-TL-E
Brand :Sanyo
THB27.00
Each: (In a Pack of 5)
Units
NPN + PNP 1 A 50 / -50 V PCP 5 Surface Mount 1 W 140 - -60 V, 60 V -5 (PNP) V, 5 (NPN) V 150 MHz 7 2 -
RS Stock No. 663-9219
หมายเลขชิ้นส่วนของผู้ผลิต / Mfr. Part No.2SB824S
Brand :Sanyo
THB30.00
Each: (In a Pack of 5)
Units
PNP 5 A 50 V TO-220 Through Hole 1.75 W 140 - 60 V 6 V 30 MHz 3 1 -