In this article we compare 2n2222 vs BC548 general-purpose transistors, both these NPN transistors are very common components at electronics.

The circuit based on amplification or switching both 2n2222 and BC548 functioned differently due to its different technical specifications, in this comparison, we include a wide variety of aspects about 2n2222 and BC548 BJT transistors.

2N2222 DATASHEET

In this category, we explain different current, voltage specifications of the 2n2222 transistor, and also other technical information.

2n2222 pinout

2n2222 pinout
2n2222 pinout

Emitter (e) – Pin01

Base (b) – Pin02

Collector (c) – Pin03

TO-18 package

The outer package of the 2n2222 transistor is TO-18, it is a metal can cover package, so due to this reason TO-18 is very expensive but the temperature withstanding capacity is high at this TO-18 package.

2n2222 max voltage

The maximum voltage of 2n2222 include all junction voltage separately

  • Collector- base voltage = 60v
  • Collector-emitter voltage = 30v
  • Emitter- base voltage = 5v

2n2222 max current

The max current category of the 2n2222 transistor includes all aspects of current specifications.

  • Collector current = 800Ma
  • Peak base current = 200Ma
  • DC gain = 75 – 800

 

2n2222 max frequency

The maximum transition frequency of the 2n2222 transistor is 250MHz.

 

2n2222 power dissipation

The maximum collector power dissipation of 2n2222 is 500Mw.

 

2n2222 temperature specifications

The maximum junction and storage temperature of the 2n2222 transistor is with a range of -65 to +150˚C.

 

2n2222 noise figure

The maximum noise figure of the 2n2222 transistor is very low that is 4db.

 

2n2222 equivalent transistor

The equivalent transistor for 2n2222 is 2n2219, 2n1613, and 2n2792

 

2n2222 complementary

The complementary PNP transistor for 2n2222 is 2n2907

 

2n2222 SMD version

The SMD versions of the 2n2222 transistor are BCW65, FMMT2222, PMBT2222, and KTN2222 all of these versions have (SOT-23) package at surface mount version.

 

BC548 DATASHEET

In this category, we include all the technical and physical information’s about the BC548 transistor.

Bc548 pinout

Pinout of bc548
Pinout of bc548

Collector (c) – Pin01

Base (b) – Pin02

Emitter (e) – Pin03

TO-92 package

The Package of BC548 transistor is TO-92, this particular package will be build using plastic and epoxy material, due to this reason TO-92 is less expensive but power capacity is low at this package.

BC548 voltage

The maximum voltage specifications of the BC548 transistor at each junction are been explained in this category.

  • Collector- base voltage = 30v
  • Collector-emitter voltage = 30v
  • Emitter- base voltage = 5v

Bc548 max current

  • Collector current = 100Ma
  • Peak base current = 110Ma
  • DC gain = 110 – 800

 

BC548 transition frequency

The maximum transition frequency of the BC548 transistor is 150MHz.

 

BC548 power dissipation

The maximum collector power dissipation of BC548 is 500Mw.

 

BC548 temperature specifications

The maximum junction and storage temperature of the BC548 transistor is with a range of -65 to +150˚C.

 

BC548 noise

The maximum noise figure of the BC548 transistor is 10db.

 

BC548 equivalent transistor

The equivalent transistor for BC548 is BC547 and 2n3904

 

Bc548 complementary

The complementary PNP transistor for BC548 are BC556, BC557, and BC558

 

BC548 SMD version

The SMD versions of BC548 transistors are BC848, BC848W, BC849, and BC849W.

 

Compare 2n2222 vs BC548 transistor

  1. Voltage and current specifications

  • When we consider the voltage specification of BC548 vs 2N2222 transistors, it is clear that both of them are very close to each other because the emitter-base voltage is the value that which for biasing, for both transistors that is the same 5V.

 

  • Then the collector-base voltage is known as the voltage from input to output, for BC548 the value is 30v and the 2n2222 value is 60V, which will show the maximum voltage applied to the transistor.

 

  • The collector current is the maximum current load affordable at the device, for BC548 current value is 100Ma and for 2n2222 that is 800ma, which shows 2n2222 transistor is better at current handling capacity.

 

  • The peak base current is the trigger current need to switch ON the device, the bc548 needs the least amount of current to trigger.

 

  • DC gain factor is the important thing at amplification process, for BC548 110 to 800 hfe and 2n2222 75 to 800 hfe, this value shows that 2n2222 transistor had wide range than BC548.

 

  1. Transition frequency

  • The transition frequency for both 2n2222 and BC548 transistors is different, for 2n2222 the value is 250MHz and for BC548 it is 150MHz.
  • The transition frequency is the maximum operating frequency of a transistor.

Conclusion

The 2N2222 and BC548 transistors are general-purpose electronic components used in our common applications, 2n2222 and BC548 had similar circuit applications but they are way different in some aspects of the transistor.

The BC548 is more compactable than 2n2222 due to the package, 2n2222 has the metal package and BC548 have common plastic with the epoxy package.

Other than some dissimilarities 2n2222 and BC548 transistors are equivalent to each other.

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