So if the load is less then 600mA which is the maximum collector current of 2N2222 then you can easily use it instead of S8050 but if the load is higher than 600mA then you cannot use 2N2222 instead of S8050.Īgain in this case we will see the above ratings and characteristics chart now in this situation if the 2N2222 transistor is working as an amplifier then we can easily replace it with S8050 without any hassle. Another way to find out that is to check what type of component this transistor is driving whether it is a relay, LED or any other component and check its datasheet that how much current this component requires.
2n2222 transistor smd how to#
You will also find many tutorials on YouTube on how to check amperes. This can be determined by using a digital mulitimeter on ampere settings and connected between the transistor and the load. But if you are replacing it in a switching circuit then we should find out that how much load or current S8050 is driving in that circuit. If you want replace it in an amplification circuit then there will not be an issue and you can replace them without any hassle.
While the S8050 collector-emitter voltage is 25V, collector current is 1500mA, total device dissipation is 1000mW, DC current gain is 85 to 300 and transition frequency is 100MHz. As you can see in the ratings and characteristics chart above, the 2N2222 collector-emitter voltage is 40V, collector current is 600mA, total device dissipation is 625mW, DC current gain is 30 to 300 and transition frequency is 300MHz. To understand this first we have to check and compare their ratings and characteristics. Ratings & Characteristics Comparison : Ratings & Characteristics So you don’t have to change anything regarding to pins when replacing the in a circuit and you can put them in the place of each other. The first pin is “Emitter”, second is “Base” and the third is “Collector”. As the ceramic version would be required by design, or by requirement.The pin configurations of both the transistors are identical. So the cost difference between the cheaper plastic version and the more expensive ceramic military version would not matter. As any plastic 2N2222 surface mount package would not be allowed. And if the design happens to be required to comply with military specifications, than this SMD component would be required. Of course they have added this package style to the DOD specification for a reason. Common 2N2222 surface mount package styles are PN2222, or MMBT2222A, and PZT2222A. However I have never come across this particular package, either in a design function or some other debug of some one else's card. The package is defined in government or Department of Defense documents as an approved package for both this transistor and others. However only one side are shown in this view.Įditor Note: I can't tell how common this particular surface mount package is. The UA package is a 4 tab surface mount package. Operating Temperature = -65 to +150 0C UA SMD Package / Schematic JANKCM, JANKCD, JANKCP, JANKCL, JANKCR, JANKCF, JANKCG, and JANKCH, JANSH, JANHC, JANHCM, JANHCD, JANHCP, JANHCL, JANHCR, JANHCF, JANHCG, JANHCH, JANKC, JANTXVR, JANTXVF, JANTXVG, JANTXVH, JANS, JANSM, JANSD, JANSP, JANSL, JANSR, JANSF, JANSG, Refer to MIL-PRF-19500/255 Semiconductor Device, Transistor, NPN, Silicon, Switching, PWB layout hint increase the pad size to dissipate more heat into the board and away from the 2N2222 package. The 2N2222 in this package style will operate up to 50C with out the need for derating. So the package device defined here is a very different package style, as shown below. The most common surface mount package would be a SOT23 or SOT-223 device but is not qualified by this military specification. Use the links below for additional derating information covering different package styles. The derating Graph is for a 2N2222A in a surface mount package. 2N2222 Applications Medium power amplifier and transistor switch 2N2222UA Transistor Derating Curves 2N2222AUA Temperature-Power Derating Curve, Adhesive Mount
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