Click on an alternate part number to view part details, or select up to 4 parts to compare sidebyside. How to make music reactive light at home using 3904 transistor how to make music reactive light at home using 3904 transistor,in this video i will tell you how can you make music reactive light easily at home by using 3904 lecture on npn 2n3904 and pnp 2n3906 transistor controlled electronics flashing led. Output impedance is also a factor since watts amps squared x ohms. It is designed for general purpose amplifier applications and is housed in the sot. The 2n3904 is a small signal generalpurpose npn transistor. The 2n3904 is common generalpurpose lowpower npn transistor used amplifying or switching applications. Npn silicon transistor descriptions general small signal application switching application features low collector saturation voltage collector output capacitance complementary pair with 2n3906 ordering information type no. Free packages are available maximum ratings rating symbol value unit collector. Since the 2n3904 is an npn transistor, that means the base needs positive biasing appropriate voltage levels and resistance to turn on the collector emitter junction for proper current flow. Npn transistor 3904 datasheet pdf, npn transistor 3904. Transistor 2n3904 bipolar bjt npn general purpose pack.
Preferred devices are recommended choices for future use. Transistors operate at low voltage so must pass high current to satisfy the equation watts volts x amps. Storage and fall time equivalent test circuit figure 1. Emitter saturation voltage vbesat ic 10ma, ib 1ma 0.
Bt3904 is a npn transistor hence the collector and emitter will be left open reverse biased when the base pin is held at ground and will be closed forward biased. Transistors the mbt3904dw1 and mbt3904dw2 devices are a spin. Onsemi general purpose transistors npn silicon,alldatasheet, datasheet, datasheet search site for electronic components and semiconductors, integrated circuits, diodes, triacs, and other semiconductors. Here is a link that shows various package sizes for 3904 transistors. Npn switching transistor, mmbt3904 pdf bilin, mmbt3904 datasheet pdf, pinouts, data sheet, equivalent, schematic, cross reference, obsolete, circuits.
My problem is i couldnt find the two transistors, npn bc548 and pnp bc559 at any of my nearby radio shacks. Recent listings manufacturer directory get instant insight into. After comparing the spec sheets online and doing a little bit of googling, i found that pnp transistor 2n3906s characteristics and specs seem to fit pretty well with bc559 and bc548 fits fairly well with 2n3904s. Philips npn switching transistor,alldatasheet, datasheet, datasheet search site for electronic. Pricing and availability on millions of electronic components from digikey electronics. Posted on october 30, 2018 september 7, 2019 by pinout. Replacement and equivalent transistor for the 2n3904.
Here is an image showing the pin diagram of the this transistor. Ive been saving my used batteries in a box for recycle and now im taking it out and use the remaining voltage to light a 10mm led as my night light in my room,livingroom,kitchen,hallways and lights in the bathroom so my kids dont have to turn on the light at night when they do no. Im looking for a smt npn transistor about the equivalent of the 2n3904, say in a sot23 package or similar. The 2n3904 is a common npn bipolar junction transistor used for generalpurpose lowpower amplifying or switching applications. Posted on september 2, 2018 september 6, 2019 by pinout. I use these for my joule thief project that i found on youtube while searching how to save energy. When looking at the flat side with the leads pointed downward, the three leads emerging from the transistor are, from left to right, the emitter, base, and collector leads. Buy transistor 2n3904 npn general purpose bulk jameco will remove tariff surcharges for online orders on instock items learn more. By putting two discrete devices in one package, this device is ideal for low. The 2n3904 and the 2n2222 are 2 of the most popular npn bipolar junction transistors in the electronics market. Transistor npn smd general purpose transistor npn features npn silicon epitaxial planar transistor for switching and amplifier applications rohs compliance. Normally im a software guy, but i am trying to create a really cheap design for my dads model train club. This transistor is also available in a throughthehole to92 bulk, and ammopack versions.
It is typically used for lowcurrent, medium voltage, and moderate speed purposes. It is one of the lowestcost general purpose transistors currently available on the market, and compares well with the bc range of npn transistors. It is designed for low current and power, medium voltage, and can operate at moderately high speeds. Mmbt3904 npn switching transistor dbook, halfpage m3d088. The original in a to92 package looks to go for under 10c in 1k volumes, which would be rather nice. Free lead finish maximum ratings rating symbol value unit collector. Equivalent test circuit total shunt capacitance of test jig and connectors.