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 184-868
製造零件編號2SC5198-O(Q)
BrandToshiba
HK$11.87
單位
NPN 10 A 140 V TO-3PN Through Hole 100 W Single 140 V 5 V 30 MHz 3 1 19 x 15.9 x 4.8mm -
RS庫存編號 756-0293
製造零件編號2SC5886A(T6L1,NQ)
BrandToshiba
HK$8.086
/個 (每包:5個)
單位
NPN 5 A 50 V DPAK (TO-252) Surface Mount 20 W Single 120 V 9 V - 3 1 6.5 x 5.5 x 2.3mm -
RS庫存編號 601-1113
製造零件編號2SA1048-GR(F)
BrandToshiba
HK$1.04
/個 (每包:10個)
單位
PNP 150 mA 50 V E-Line Surface Mount 200 mW - 50 V 5 V 80 MHz 3 1 3.2 x 4.2 x 2.6mm -
RS庫存編號 890-2682
製造零件編號2SC5200-O(S1,F,S)
BrandToshiba
HK$26.236
/個 (每包:5個)
單位
NPN 15 A 230 V TO-3PL Through Hole 150 W Single 230 V 5 V - 3 1 20.5 x 26 x 5.2mm -
RS庫存編號 601-1810
製造零件編號2SD1947A(F)
BrandToshiba
HK$25.30
/個 (每包:5個)
單位
NPN 10 A 100 V TO-220 Through Hole 2 W - 100 V 7 V 70 MHz 3 1 8.1 x 10 x 4.5mm -
RS庫存編號 601-1315
製造零件編號2SA950-O(F)
BrandToshiba
HK$2.33
/個 (每包:10個)
單位
PNP 800 mA 30 V TO-92 Through Hole 600 mW - 35 V 5 V 120 MHz 3 1 4.7 x 5.1 x 4.1mm -
RS庫存編號 890-2604
製造零件編號2SA1312-BL(TE85L,F
BrandToshiba
HK$1.942
/個 (每包:25個)
單位
PNP 100 mA 120 V SOT-346 (SC-59) Surface Mount 150 mW Single -120 V -5 V - 3 1 2.9 x 1.5 x 1.1mm -
RS庫存編號 890-2614
製造零件編號2SA1587-GR(TE85L,F
BrandToshiba
HK$2.355
/個 (每包:25個)
單位
PNP 100 mA 120 V SOT-323 (SC-70) Surface Mount 100 mW Single -120 V -5 V - 3 1 2 x 1.25 x 0.9mm -
RS庫存編號 601-6405
製造零件編號2SC5171(Q)
BrandToshiba
HK$5.30
/個 (每包:5個)
單位
NPN 2 A 180 V TO-220 Through Hole 20 W - 180 V 5 V 200 MHz 3 1 8.1 x 10 x 4.5mm -55 °C
RS庫存編號 531-9450
製造零件編號2SC3421-Y(Q)
BrandToshiba
HK$4.82
/個 (每包:10個)
單位
NPN 1 A 120 V TO-126IS Through Hole 1.5 W - 120 V 5 V 120 MHz 3 1 11 x 8.3 x 3.4mm -55 °C
RS庫存編號 540-6324
製造零件編號2SC732TM(F)
BrandToshiba
HK$2.84
/個 (每包:5個)
單位
NPN 150 mA 50 V TO-92 Through Hole 400 mW - 60 V 5 V 150 MHz 3 1 4.7 x 5.1 x 4.1mm -55 °C
RS庫存編號 601-1084
製造零件編號2SA1015-Y(TPE2,F)
BrandToshiba
HK$2,820.00
毎卷:3000 個
Reel(s)
PNP 150 mA 50 V TO-92 Through Hole 400 mW - 50 V 5 V 80 MHz 3 1 4.7 x 5.1 x 4.1mm -55 °C
RS庫存編號 144-5206
製造零件編號RN1423(TE85L,F)
BrandToshiba
HK$2.145
/個 (每包:20個)
單位
NPN - 50 V SOT-23 (TO-236) Surface Mount 200 mW Single - 10 V - 3 1 2.9 x 1.5 x 1.1mm -
RS庫存編號 601-1135
製造零件編號2SA1162-GR(F)
BrandToshiba
HK$1.209
/個 (每包:10個)
單位
PNP 150 mA 50 V SOT-346 (SC-59) Surface Mount 150 mW Single 50 V 5 V 80 MHz 3 1 1.1 x 2.9 x 1.5mm -55 °C
RS庫存編號 756-0290
製造零件編號2SC5810(TE12L,F)
BrandToshiba
HK$2.505
/個 (每包:10個)
單位
NPN 1 A 50 V SC-62 Surface Mount 2 W Single 100 V 7 V - 3 1 4.6 x 2.5 x 1.6mm -
RS庫存編號 601-1141
製造零件編號2SA1162-Y(F)
BrandToshiba
HK$1.402
/個 (每包:10個)
單位
PNP 150 mA 50 V SOT-346 (SC-59) Surface Mount 150 mW Single 50 V 5 V 80 MHz 3 1 1.1 x 2.9 x 1.5mm -55 °C
RS庫存編號 185-108
製造零件編號2SA1428-Y(F)
BrandToshiba
HK$2.37
/個 (每包:10個)
單位
PNP 2 A 50 V MSTM Surface Mount 900 mW - 50 V 5 V 100 MHz 3 1 4.7 x 7.1 x 2.7mm -
RS庫存編號 601-1292
製造零件編號2SA2142(Q)
BrandToshiba
HK$3.222
/個 (每包:5個)
單位
PNP 500 mA 600 V PW Mold Surface Mount 1 W Single 600 V 7 V 35 MHz 3 1 2.3 x 6.5 x 5.5mm -55 °C
RS庫存編號 756-0593
製造零件編號HN1C01F-GR(TE85L,F
BrandToshiba
HK$1.953
/個 (每包:10個)
單位
NPN 150 mA 50 V SM Surface Mount 300 mW Isolated 60 V 5 V 80 MHz 6 2 2.9 x 1.6 x 1.1mm -
RS庫存編號 756-0192
製造零件編號2SA2056(TE85L,F)
BrandToshiba
HK$2.468
/個 (每包:10個)
單位
PNP 2 A 50 V TSM Surface Mount 1 W Single -50 V -7 V - 3 1 2.9 x 1.6 x 0.7mm -