![]() The 2N2222A and the 2N2907A would be usually used at 300mA or less and a working voltage of less then 50V, and they are great general purpose transistors in this range. In many ways, the maximum current rating is not that important as the transistor is performing pretty poorly at that point. Bipolar Transistors Cross Reference 2n2222 2n2222a cnv 2. A small signal low-noise transistor, a RF transistor, a high voltage transistor or a switching transistor all have noticeably different styles of layouts. 2N2222 Transistor Equivalent Substitute - Cross-Reference Search 2N2222 Datasheet (PDF). ![]() Here are some typical chip layouts: The layouts are different, but they are at least in the same type of layout. Usually this means the PNP transistor has to be larger then the NPN for the same current capability. So when you see a complimentary pair, they are usually two completely different transistor designs chosen so that they have a similar voltage capability, current rating, current gain, collector to base capacitance and package type. The maximum collector current of the 2N2222 is 800mA, whereas the bc547's is 100mA.īoth the 2N2222 and the BC547 have the same power dissipation (500mw), the 2N2222 has a DC gain of 75 to 300HFe and the BC547 has a DC gain of 110 to 800HFe, and the 2N2222 has a thermal resistance of 146k/w and the BC547 has a thermal resistance of 83.3 C/w.īecause the transition frequency of 2N2222 is 250MHz and that of BC547 is 300MHz, the noise figure on 2N2222 is 4db and on BC547 is 10db.Since the properties of P-Type and N-Type semiconductor are so different, it is impossible to make geniune totally matching complimentary pairs. The voltage between the emitter and the base is 5 volts in 2N2222 and 6 volts in BC547. The collector to base voltage at 2N2222 is 60 volts, whereas it is 50 volts at BC547, and the collector to emitter voltage is 30 volts at 2N2222 vs 45 volts at BC547. The 2N2222 has an emitter, base, and collector pinout, whereas the BC547 has a collector, base, and emitter pinout. The D44H11 has a guaranteed minimum gain of 60 at 2 A, with typical gain well over 100 at 300 mA. The same electronic projects can also be developed using the BC547 instead using the 2n2222 NPN transistor. Portable security system using Mini PIR Sensor. Non Contact AC line Voltage detector/tester. A medium power transistor with lower voltage rating such as D44H11 would do a better job. We will make the following four projects using the 2N2222 NPN transistors. The BC547 transistor came in a to-92 package, but 2N2222 transistors, such as the PN2222 and KN2222, also came in to-92 packages. The ST13009 has very low current gain due to its high voltage rating (400 volts). 2N2222 is a very famous transistor and also widely used in electronics applications whether it’s a commercial or educational application. The 2N transistors were packaged in a to-18 package, which means they were enclosed with metal. The 2N2222 transistor is more powerful than the BC547. Collector to Emitter Voltage (VCE) is 30V.Collector to Base voltage ( VCB ) is 50V.Collector to Emitter Voltage (VCE) is 45V.DC Current Gain range is 110 to 800 hFE.The maximum frequency on this frequency is 250MHZ, which is the 2N2222 transistor's transition frequency. The trigger terminal's maximum bias voltage is 200 mV, while the 2N2222 transistor's maximum bias current is 200 mA. The maximum collector current of the 2N2222 transistor is 800mA this is the greatest current that this device can handle. SWITCHING TIME EQUIVALENT TEST CIRCUITS Scope rise time < 4 ns Total shunt capacitance of test jig, connectors, and oscilloscope. The maximum current gain of the 2N2222 transistor is 300hFE, and this number determines the transistor's amplification factor. A bipolar NPN transistor, the 2N2222 is a transistor with two poles.
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