Digital Transistors

Digital transistors are discrete semiconductors that are used to amplify electronic signals and electrical power. They take in a tiny electric current at one end of your circuit (an input current) and produce a much bigger electric current at the other end (an output current). In other words, they're a kind of current booster.

How do digital transistors work?

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.

They can also work asswitches.A tiny electric current flowing through one part of a transistor can make a much bigger current flow through another part of it. In other words, the small current can switch on the larger one.

The benefits of using a digital transistor include:

  • a reduction in system cost
  • simplifies your circuit design
  • reduces circuit board space
  • reduces component count

Applications for digital transistors

Digital transistors can be used in several applications including:

  • Control of IC inputs
  • Automotive applications
  • Switching loads
  • Inverter circuits
  • Interface circuits
  • Driver circuits

...
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Description Price Transistor Type Number of Elements per Chip Maximum Continuous Collector Current Maximum Collector Emitter Voltage Typical Input Resistor Base-Emitter Resistor Mounting Type Package Type Pin Count Minimum DC Current Gain Maximum Power Dissipation Transistor Configuration Maximum Collector Emitter Saturation Voltage Maximum Emitter Base Voltage
RS Stock No. 151-3383
Mfr. Part No.PEMH10,115
BrandNexperia
HK$0.325
Each (On a Reel of 4000)
units
NPN 2 100 mA 50 V 2.2 kΩ 47kΩ Surface Mount SOT 6 100 200 (Per Transistor) mW, 300 (Per Device) mW - 0.1 V -
RS Stock No. 163-2540
Mfr. Part No.MUN2212T1G
HK$0.156
Each (On a Reel of 3000)
units
NPN 1 100 mA 50 V 22 kΩ - Surface Mount SOT-346 (SC-59) 3 60 - Single 0.25 V -
RS Stock No. 146-7065
Mfr. Part No.DTC043TUBTL
BrandROHM
HK$0.256
Each (On a Reel of 3000)
units
NPN 1 100 mA 50 V 4.7 kΩ - Surface Mount SOT-323FL 3 3.29 200 mW Single 0.15 V 5 V
RS Stock No. 183-4893
Mfr. Part No.DTC143XU3T106
BrandROHM
HK$0.381
Each (In a Pack of 200)
units
NPN 1 100 mA - 4.7 kΩ 10kΩ Surface Mount SOT-323 3 30 200 mW Single - -
RS Stock No. 168-3424
Mfr. Part No.DRA3144V0L
BrandPanasonic
HK$0.564
Each (On a Reel of 10000)
units
PNP 1 100 mA 50 V 47 kΩ - Surface Mount SSSMini3 F2 B 3 30 100 mW Single 0.25 V -
RS Stock No. 146-7064
Mfr. Part No.DTC043TMT2L
BrandROHM
HK$0.184
Each (On a Reel of 8000)
units
NPN 1 100 mA 50 V 4.7 kΩ - Surface Mount SOT-723 3 3.29 150 mW Single 0.15 V 5 V
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