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 madeA 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 transistorTransistors 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 711-4888
製造零件編號BC857CT-7-F
HK$0.669
/個 (每包:50個)
單位
PNP 100 mA 45 V SOT-523 (SC-89) Surface Mount 150 mW 420 Single -50 V -5 V - 3 1 -
RS庫存編號 751-4503
製造零件編號MMBT4403-7-F
HK$0.369
Each (On a Tape of 250)
單位
PNP 600 mA 40 V SOT-23 Surface Mount 300 mW 20 Single -40 V -5 V 200 MHz 3 1 -
RS庫存編號 165-8893
製造零件編號PMP5201Y,115
BrandNexperia
HK$1.573
個 (在毎卷:3000)
單位
NPN + PNP 100 mA 45 V SOT-363 (SC-88) Surface Mount 300 mW 200 Isolated -50 V -5 V 100 MHz 6 2 -
RS庫存編號 816-7700
製造零件編號BC807W
BrandNexperia
HK$0.208
/個 (每包:300個)
單位
PNP 500 mA 45 V SOT-323 (SC-70) Surface Mount 200 mW 100 Single -50 V -5 V 100 MHz 3 1 -
RS庫存編號 153-2852
製造零件編號BC847AM,315
BrandNexperia
HK$0.236
個 (在毎卷:10000)
單位
NPN 100 mA 45 V DFN1006, SOT-883 Surface Mount 250 mW 110 Single 50 V 45 V - 3 1 AEC-Q101
RS庫存編號 166-1098
製造零件編號BCV62AE6327HTSA1
BrandInfineon
HK$0.51
個 (在毎卷:3000)
單位
PNP 100 mA 30 V SOT-143 Surface Mount 300 mW 100 Current Mirror 30 V 6 V 250 MHz 4 2 -
RS庫存編號 663-8250
製造零件編號2SA1740D-TD-E
BrandSanyo
HK$5.35
/個 (每包:5個)
單位
PNP 200 mA -400 V PCP Surface Mount 1.3 W 60 - -400 V -5 V 70 MHz 3 1 -
RS庫存編號 901-4058
製造零件編號TSA884CX RFG
HK$1.395
/個 (每包:50個)
單位
PNP 150 mA 500 V SOT-23 Surface Mount 300 mW 80 Single -500 V -5 V 1 MHz 3 1 -
RS庫存編號 145-4110
製造零件編號CPH3116-TL-E
HK$0.671
個 (在毎卷:3000)
單位
PNP 1 A 50 V CPH Surface Mount 900 mW 200 Single -50 V -5 V 1 MHz 3 1 -
RS庫存編號 663-8929
製造零件編號CPH3209-TL-E
BrandSanyo
HK$4.14
/個 (每包:5個)
單位
NPN 3 A 30 V CPH Surface Mount 900 mW 200 - 40 V 5 V 450 MHz 3 1 -
RS庫存編號 171-5503
製造零件編號2SAR573D3TL1
BrandROHM
HK$3.345
/個 (每包:20個)
單位
PNP 3 A -50 (Minimum) V TO-252 Surface Mount 10 W 180 Single -50 (Minimum) V -6 (Minimum) V 300 MHz 3 1 -
RS庫存編號 801-5586
製造零件編號PBHV9050Z,115
BrandNexperia
HK$3.41
Each (On a Tape of 10)
單位
PNP 250 mA 500 V SOT-223 Surface Mount 1.4 W 70 Single -500 V -6 V 100 MHz 3 + Tab 1 -
RS庫存編號 168-1932
製造零件編號DTA123YUAT106
BrandROHM
HK$0.267
/個 (每包:200個)
單位
PNP 100 mA - SOT-323 Surface Mount 200 mW 33 Single - - 250 MHz 3 1 -
RS庫存編號 169-7398
製造零件編號MMBT3906T-7-F
HK$0.318
個 (在毎卷:3000)
單位
PNP 200 mA 40 V SOT-523 (SC-89) Surface Mount 150 mW 300 Single -40 V -5 V 250 MHz 3 1 -
RS庫存編號 922-8529
製造零件編號ZXTN2010ZTA
HK$3.16
個 (在毎卷:1000)
單位
NPN 5 A 60 V SOT-89 Surface Mount 2.1 W 20 Single 150 V 7 V 130 MHz 3 1 -
RS庫存編號 145-3151
製造零件編號2N6288G
HK$4.847
毎管:50 個
單位
NPN 7 A 30 V TO-220 Through Hole 40 W 30 Single 40 V dc 5 V 4 MHz 3 1 -
RS庫存編號 823-1482
製造零件編號MMDT2222A-7-F
HK$2.216
/個 (每包:50個)
單位
NPN 600 mA 40 V SOT-363 (SC-88) Surface Mount 200 mW 300 Isolated 75 V 6 V 300 MHz 6 2 -
RS庫存編號 801-5609
製造零件編號PBSS4021PT,215
BrandNexperia
HK$2.244
/個 (每包:20個)
單位
PNP 3.5 A 20 V SOT-23 Surface Mount 1.1 W 30 Single -20 V -5 V 100 MHz 3 1 -
RS庫存編號 765-9429
製造零件編號BC33716BU
HK$0.754
/個 (每包:100個)
單位
NPN 800 mA 45 V TO-92 Through Hole 625 mW 60 Single - 5 V 100 MHz 3 1 -
RS庫存編號 184-4735
製造零件編號BD682G
HK$3.68
/個 (每包:20個)
單位
PNP 4 A 100 V dc TO-225 Through Hole 40 W 750 Single 100 V dc 5 V dc 1 MHz 3 1 -