The complementary PNP transistor is 2N3906. It is a 200 mA, 40 V, 625 mW transistor with a transition frequency of 300 MHz, with a minimum beta, or current gain, of 100 at a collector current of 10 mA.Įlectrically similar devices, such as the MMBT3904, are available in a variety of small through-hole and surface-mount packages, including TO-92, SOT-23, and SOT-223, with package-dependent thermal ratings from 625 milliwatts to 1 watt. Some manufacturers mark "EBC" on the molded part, but all are required to have those connections for a part which is a "2N3904". When looking at the flat side with the leads pointed downward, the three wires emerging from the bottom are connected to, from left to right, the emitter, the base and the collector. 2N3906 Datasheet, 2N3906 datasheets, 2N3906 pdf, 2N3906 integrated circuits : ONSEMI - General Purpose Transistors(PNP Silicon) ,alldatasheet, Datasheet, Datasheet search site for Electronic Components and Semiconductors, integrated circuits, diodes, triacs and other semiconductors. Im kind of confused over this circuit and it seems that my knowledge doesnt match. This transistor is a low-cost device, widely available and sufficiently robust to be of use by experimenters and electronics hobbyists. Emitter: 5 V I tried with two 2N3906 transistors to make sure it wasnt broken. The construction of the 2N3904 and 2N3906 in the 1960s represented a significant performance and cost improvement, with the plastic TO-92 case replacing metal cans. Both types were registered by Motorola Semiconductor in the mid-1960s.ĭevice packaging and specifications It is complementary to the 2N3906 PNP transistor. It is designed for low current and power, medium voltage, and can operate at moderately high speeds. The 2N3904 is a common NPN bipolar junction transistor used for general-purpose low-power amplifying or switching applications. The control voltages are opposite - high-side switches need a low input to switch them on, but low-side switches need a high input.A 2N3904 in a TO-92 package on a breadboard (lower left) So PNPs and P-channel mosfets are used to switch the high side, and NPNs and N-channel mosfets switch the low side. A PNP would need -.6V at the base to draw its emitter to ground. 6V on the base to turn it on and provide a no-drop path to ground. NPN transistors work (and PNP's don't work) on the LOW side. You would have to put 3.9V on the base to supply 3.3V to the load. So the emitter voltage can never rise above 2.7V if any current at all is to flow. Both types were registered by Motorola Semiconductor in the mid-1960s. It is complementary to the 2N3904 NPN transistor. It is designed for low electric current and power and medium voltage, and can operate at moderately high speeds. That's because no current will flow through the base unless the base/emitter voltage is at least. The 2N3906 is a commonly used PNP bipolar junction transistor intended for general purpose low-power amplifying or switching applications. 6V drop across the collector/emitter junction, and the volltage supplied to the load is only about 2.7V. You say the NPN 3904 works in this circuit, but I would bet that closer examination will show that there is a. TO92CASE 29STYLE 1 12 3 STRAIGHT LEADBULK PACKBENT LEADTAPE & REELAMMO PACK MARKING DIAGRAM 2N3906ALYW Assembly Location Wafer Lot Year Work Week PbFree Package(Note: Microdot may be in either location) ORDERING INFORMATION See detailed ordering and shipping information in the packagedimensions section on page 3 of this data sheet. PNPs work well on the high side because in this configuration there is no material voltage drop across the emitter/collector when the transistor is on, and the full 3.3V is supplied to the load. Well suitable for tv and home appliance equipment Small load switch transistor with high gain and low saturation. The 2N3904’s PNP complementary type is 2N3906. Visit To Learn More and Utilize Our Free Online Tools and Resources. You turn on a PNP transistor by bringing the base low relative to the emitter - by at least. Explore The 2N3904 Transistor Datasheet (PDF Download), Pinout, and Features. These high reliability transistors are suited for assembly on thick & thin-film hybrid circuits with high mechanical quality & Gold back metallization. The 3906 is working exactly as it's supposed to. The 2N3906 silicon PNP transistor is designed for amplifier and general purpose switching applications.
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