9/26/2023 0 Comments 4. pn2222 transistorA different transistor's pins may be in the order b, c, e from left to right. This is especially true for transistors in the plastic TO-92 package.Īs an example, when the KSP2222 (or PN2222) transistor's flat side (the side with the part number printed on it) is facing you with the pins down, the pins are e, b, c (emitter, base, collector) from left to right. transistors with different part numbers) won't necessarily have the pins in the same order. 2N2222, BC107, BC108 and BC109 Transistor Pinout Diagramĭifferent transistors (i.e. The way that a 2N2222, BC107, BC108 and BC109 transistor symbol maps to the physical device is shown in the diagram below. Transistors have three pins called emitter (e), base(b) and collector(c). Metal Can and Plastic Packaged Transistors Transistors Pins Transistors NPN Silicon MAXIMUM RATINGS THERMAL CHARACTERISTICS COLLECTOR 3 2 BASE EMITTER 1 23 MARKING DIAGRAM PN222xYWW TO92CASE 29STYLE 1 PN222x Device Code YWW 2 or A Year Work Week ORDERING INFORMATION Preferred devices are recommended choices for future useand best overall value. The KSP2222 is an equivalent of the 2N2222 but is packaged in a plastic package known as a TO-92 package. The 2N2222 is packaged in a metal can package known as a TO-18 package. They have the part numbers 2N2222 and KSP2222 (also available as PN2222). In the photo below, two different transistors are shown. Transistor Part NumbersĮach transistor has a part number. It is designed for low to medium current, low power, medium voltage, and can operate at moderately high speeds. The 2N2222 is a common NPN bipolar junction transistor (BJT) used for general purpose low-power amplifying or switching applications. The bigger the package is, the more power the transistor can handle. Cross section of 2N2222 in metal TO-18 package, showing connection wires between external pins and die. These are the names of the packages and not the transistor part numbers. Transistors can be packaged in many different packages, some examples are shown below: Examples of Different Transistors in Different Packagesĭifferent packages have different names, e.g. There are two versions of PN2222: PN222A (which has higher Absolute Maximum Ratings) and the original model without an ‘A’ at the. It comes in TO-92 packaging, with 60 V Collector-Base, 30 V Emitter-Base, and 5 V Collector-Emitter voltage ratings. The symbols used in circuit diagrams for NPN and PNP transistors are shown below: Circuit Diagram Symbols of NPN and PNP Transistors Transistor Packages PN2222 is an NPN general-purpose transistor that is complementary to the PN2907 PNP transistor. There are two types of BJTs, namely NPN and PNP. Here the BJT (Bi-polar Junction Transistor) is discussed. There are several kinds of transistors available, e.g.
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