2n2222 transistor three color led flasher

The technical specifications of 2N2222 in TO-18 metal packaging and 2N2222A transistor in TO-92 packaging are given below: Spec 2N2222A 2N2222 Power Dissipation(T C = 25☌) 1.5 1.2W DC Current Gain (hFE) 30-300 30-300 Operating Temperature Range -55 to 150☌ -65 to 200☌ Continuous Collector Current (I C) 0.6 A 0.8 mA Collector-Base Voltage(V CB) 75 60V Emitter-Base Voltage(V EB) 6 5V Collector-Emitter Voltage(V CE) 40 30V Input Capacitance(C I) 25pF 30pF Output Capacitance(C O) 8pF 8pF Transistor type NPN NPN Package TO-92 TO-18 Mounting Type Through-hole Through-hole Transition frequency(Ft) 250MHz This table shows the technical specifications of the 2N2222 Transistor The Collector to Base, Emitter to Base, and Collector to Emitter voltage ratings of 2N2222 and 2N2222A are 60V, 30V, 5V and 75V, 40V, 6V respectively.Īlso, the 2N2222 comes in metal packaging whereas the 2N2222A is available in TO-92 plastic enclosure only.ĢN2222A is a better option considering its higher ratings, low cost, and TO-92 packaging. Pin descriptionĢN2222 VS 2N2222A: What’s the difference?īoth are similar types of transistors but the 2N2222A has higher Maximum absolute ratings than 2N2222. This pin act as an outlet and the current comes out of the transistor from here. 2 Base This pin controls the transistor biasing. Original 2N2222 Pinout(TO-18 Package) Pin Type Function 1 Emitter This pin act as an inlet as the current enters the transistor from here.

2n2222 transistor three color led flasher