But none the less, here is the circuit symbol of 2N3906 Transistor.Ĭoming to the pinout, we took the three popular packages (TO092, SOT-23 and SOT-223) and made 3D models with pinouts. There is nothing special about the circuit symbol as it is essentially a regular PNP Transistor. 2N3906 Transistor Pinoutīefore looking at the specifications of 2N3906 PNP Transistor, let us quickly take a peek at the circuit symbol and also the pinout of different packages of 23906 Transistor.Īs it is a BJT, it has three terminals: Base (B), Emitter (E) and Collector (C). Some companies that manufacture SOT23 variant of 2N3906 are onsemi, Diodes Incorporated, TSMC, Micro Commercial Company, Panjit International Inc. The SOT-223 package is very rare (and Digi-Key listed it as obsolete) but the SOT-23 package is still popular. Previously, some big semiconductor companies (Fairchild – NXP, STMicroelectronics) also produced the 2N3906 Transistors, but as of today, only onsemi acts as the main producer. The onsemi semiconductor company is the primary producer of 2N3906 transistors in TO-92 package with some small-time companies such as Micro Commercial Company, NTE Electronics and Comchip Technology are also producing them. SOT-23 and SOT-223 are the main SMD packages, where the SOT-23 variant has a part name as MMBT3906 while the SOT-223 variant has the part name as PZT3906. The TO-92 package is the most common package for 2N3906 with both straight leans and bent leads.Īpart from TO-92, it is also available in a couple of SMD packages as well. We can use this transistor for both amplification as well as switching applications. Motorola Semiconductor released the 2N3906 as well as its NPN counterpart, the 2N3904 back in the 60’s. It is one of the popular discrete transistors that circuit designers, hobbyists and makers use in their electronics projects. The 2N3906 is a general-purpose Bi-Polar PNP Transistor.
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