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. 826-8529
Mfr. Part No.IMD10AT108
BrandROHM
HK$2.154
Each (In a Pack of 40)
units
NPN + PNP 2 100 mA, 500 mA 50 V 100 Ω None Surface Mount SC-74 6 100 300 mW Isolated 0.3 V 5 V
RS Stock No. 186-8517
Mfr. Part No.MMBT589LT1G
HK$2.66
Each (In a Pack of 25)
units
PNP 1 -1 A -30 V dc - - Surface Mount SOT-23 3 40 710 mW Single -0.65 V dc -5 V dc
RS Stock No. 518-2309
Mfr. Part No.PDTA115TT,215
BrandNexperia
HK$0.316
Each (In a Pack of 50)
units
PNP 1 100 mA 50 V 100 kΩ - Surface Mount SOT-23 (TO-236AB) 3 100 - Single 0.15 V 5 V
RS Stock No. 186-8799
Mfr. Part No.NSVMMUN2235LT1G
HK$2.332
Each (In a Pack of 25)
units
NPN 1 100 mA 50 V dc 2.2 kΩ 47kΩ Surface Mount SOT-23 3 80 400 mW Single 0.25 V dc -
RS Stock No. 186-8415
Mfr. Part No.2N4401TFR
HK$1.835
Each (In a Pack of 50)
units
NPN 1 600 mA 40 V dc - - Through Hole TO-92 3 20 1.5 W Single 0.75 V dc 6 V dc
RS Stock No. 146-4672
Mfr. Part No.ADTA144EUAQ-13
HK$0.257
Each (On a Reel of 10000)
units
PNP 1 100 mA 50 V 47 kΩ 47kΩ Surface Mount SOT-323 (SC-70) 3 68 330 mW Single - -
RS Stock No. 186-7195
Mfr. Part No.NSS40200LT1G
HK$0.946
Each (On a Reel of 3000)
units
PNP 1 -2 A -40 V dc - - Surface Mount SOT-23 3 150 540 mW Single -0.17 V -7 V dc
RS Stock No. 178-5684
Mfr. Part No.DTC124EEBTL
BrandROHM
HK$0.161
Each (On a Reel of 3000)
units
NPN 1 100 mA 50 V 22 kΩ 22kΩ Surface Mount SOT-416FL 3 56 150 mW Single - -
RS Stock No. 146-4673
Mfr. Part No.ADTA144EUAQ-7
HK$0.288
Each (On a Reel of 3000)
units
PNP 1 100 mA 50 V 47 kΩ 47kΩ Surface Mount SOT-323 (SC-70) 3 68 330 mW Single - -
RS Stock No. 179-1014
Mfr. Part No.PDTA124XU,115
BrandNexperia
HK$0.17
Each (On a Reel of 3000)
units
PNP 1 100 mA 50 V 22 kΩ - Surface Mount UMT 3 80 - Single 0.15 V 7 V
RS Stock No. 186-8085
Mfr. Part No.MJW3281AG
HK$28.026
Each (In a Pack of 5)
units
NPN 1 15 A 230 V dc - - Through Hole TO-247 3 12 200 W Single 2 V dc 5 V dc
RS Stock No. 186-8777
Mfr. Part No.BS170-D27Z
HK$2.544
Each (In a Pack of 25)
units
- 1 - - - - Through Hole TO-92 3 - 350 mW - - -
RS Stock No. 153-2913
Mfr. Part No.PDTA124EU,135
BrandNexperia
HK$0.314
Each (In a Pack of 250)
units
PNP 1 100 mA -50 V 22 kΩ 22kΩ Surface Mount SC-70, SOT-323 3 60 200 mW Single -150 mV -10 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
RS Stock No. 186-8042
Mfr. Part No.BD787G
HK$4.495
Each (In a Pack of 25)
units
NPN 1 4 A 60 V dc - - Through Hole TO-225 3 5 15 W Single 2.5 V dc 6 V dc
RS Stock No. 707-4130
Mfr. Part No.DRC3114W0L
BrandPanasonic
HK$1.044
Each (In a Pack of 25)
units
NPN 1 100 mA 50 V 10 kΩ - Surface Mount SSSMini3 F2 B 3 20 100 mW Single 0.25 V -
RS Stock No. 146-7058
Mfr. Part No.DTC023JMT2L
BrandROHM
HK$0.184
Each (On a Reel of 8000)
units
NPN 1 100 mA 50 V 2.2 kΩ 47kΩ Surface Mount SOT-723 3 80 150 mW Single - -
RS Stock No. 484-3463
Mfr. Part No.PDTC114ET,215
BrandNexperia
HK$0.832
Each (In a Pack of 50)
units
NPN 1 100 mA 50 V 10 kΩ - Surface Mount SOT-23 (TO-236AB) 3 30 - Single 0.15 V 10 V
RS Stock No. 826-8544
Mfr. Part No.IMH23T110
BrandROHM
HK$2.312
Each (In a Pack of 30)
units
NPN 2 600 mA 20 V 4.7 kΩ None Surface Mount SC-74 6 820 300 mW Isolated 0.15 V 12 V
RS Stock No. 716-6491
Mfr. Part No.DRC5144G0L
BrandPanasonic
HK$1.231
Each (In a Pack of 25)
units
NPN 1 100 mA 50 V - - Surface Mount SMini3 F2 B 3 80 150 mW Single 0.25 V -
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