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. 163-1181
Mfr. Part No.SMMUN2111LT3G
HK$0.463
Each (On a Reel of 10000)
units
PNP 1 100 mA 50 V 10 kΩ - Surface Mount SOT-23 3 35 400 mW Single 0.25 V -
RS Stock No. 801-0128
Mfr. Part No.DTC143ZM3T5G
HK$0.474
Each (On a Tape of 100)
units
NPN 1 100 mA 50 V 4.7 kΩ - Surface Mount SOT-723 3 80 297 mW Single 0.25 V 6 V
New
RS Stock No. 186-7353
Mfr. Part No.BD241CG
HK$5.007
Each (In a Tube of 50)
units
NPN 1 3 A 115 V dc - - Through Hole TO-220 3 10 40 W Single 1.2 V dc 5 V dc
RS Stock No. 540-6554
Mfr. Part No.RN1106(F)
BrandToshiba
HK$2.30
Each (In a Pack of 5)
units
NPN 1 100 mA 50 V 4.7 kΩ - Surface Mount ESM 3 80 - Single 0.3 V 5 V
RS Stock No. 183-4744
Mfr. Part No.DTA143XU3T106
BrandROHM
HK$0.381
Each (In a Pack of 200)
units
PNP 1 -100 mA - 4.7 kΩ 10kΩ Surface Mount SOT-323 3 30 200 mW Single - -
RS Stock No. 715-9691
Mfr. Part No.DMA561000R
BrandPanasonic
HK$1.434
Each (In a Pack of 20)
units
PNP 2 100 mA 50 V 47 kΩ - Surface Mount SMini5 F3 B 5 160 150 mW Common Emitter 0.25 V -
RS Stock No. 540-6576
Mfr. Part No.RN1107(F)
BrandToshiba
HK$2.30
Each (In a Pack of 5)
units
NPN 1 100 mA 50 V 10 kΩ - Surface Mount ESM 3 80 - Single 0.3 V 6 V
RS Stock No. 145-3276
Mfr. Part No.MMUN2233LT1G
HK$0.125
Each (On a Reel of 3000)
units
NPN 1 100 mA 50 V 4.7 kΩ - Surface Mount SOT-23 3 80 - Single 0.25 V -
RS Stock No. 791-6242
Mfr. Part No.MUN5235DW1T1G
HK$0.486
Each (On a Tape of 100)
units
NPN 2 100 mA 50 V 2.2 kΩ - Surface Mount SOT-363 (SC-88) 6 80 256 mW Isolated 0.25 V -
RS Stock No. 183-4655
Mfr. Part No.DTA144EEBTL
BrandROHM
HK$0.191
Each (On a Reel of 3000)
units
PNP 1 -100 mA - 47 kΩ 47kΩ Surface Mount SOT-416FL 3 68 150 mW Single - -
RS Stock No. 170-2431
Mfr. Part No.DTD123EKT146
BrandROHM
HK$0.86
Each (On a Reel of 3000)
units
NPN 1 500 mA - 2.2 kΩ 2.2kΩ Surface Mount SMT 3 39 - Single - -
RS Stock No. 246-1817
Mfr. Part No.DTB123EKT146
BrandROHM
HK$3.008
Each (In a Pack of 5)
units
PNP 1 500 mA - 2.2 kΩ 2.2kΩ Surface Mount SMT 3 39 - Single - -
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. 166-2244
Mfr. Part No.FJN4301RTA
HK$0.226
Each (On a Tape of 2000)
units
PNP 1 100 mA 50 V 4.7 kΩ - Through Hole TO-92 3 20 300 mW Single 0.3 V 10 V
New
RS Stock No. 186-7357
Mfr. Part No.BD677G
HK$3.033
Each (In a Box of 500)
units
NPN 1 4 A 60 V dc - - Through Hole TO-225 3 1 40 W Single 2.5 V dc 5 V dc
New
RS Stock No. 186-8702
Mfr. Part No.FDY101PZ
HK$3.182
Each (In a Pack of 25)
units
- 1 - - - - Surface Mount SOT-523FL 3 - 625 W - - -
New
RS Stock No. 186-7194
Mfr. Part No.NSS20501UW3T2G
HK$1.691
Each (On a Reel of 3000)
units
NPN 1 5 A 20 V dc - - Surface Mount WDFN 3 180 1.5 W Single 0.13 V 6 V dc
RS Stock No. 801-0121
Mfr. Part No.DTC144EET1G
HK$0.388
Each (On a Tape of 250)
units
NPN 1 100 mA 50 V 47 kΩ - Surface Mount SOT-416 (SC-75) 3 80 300 mW Single 0.25 V 6 V
RS Stock No. 170-2429
Mfr. Part No.DTC114YKAT146
BrandROHM
HK$0.257
Each (On a Reel of 3000)
units
NPN 1 100 mA - 10 kΩ 47kΩ Surface Mount SMT 3 68 - Single - -
RS Stock No. 146-7051
Mfr. Part No.DTC014YMT2L
BrandROHM
HK$0.23
Each (On a Reel of 8000)
units
NPN 1 100 mA 50 V 10 kΩ 47kΩ Surface Mount SOT-723 3 80 150 mW Single - -
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