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Pnp Low Noise Transistors | Products & Suppliers ...
https://www.globalspec.com/industrial-directory/pnp_low_noise_transistors
Description: current-limit protection, using either an accurate sense resistor or using lossless inductor DCR current sensing. A low-noise mode maintains high light-load efficiency while keeping the switching frequency out of the audible range. An internal, fixed 5V, 100mA linear regulator powers up the.
2N5087: Low Noise PNP Bipolar Transistor, TO-92
https://www.onsemi.com/products/discrete-power-modules/general-purpose-and-low-vcesat-transistors/2n5087
This PNP Bipolar transistor is designed for high gain, low noise general purpose amplifier applications. It is housed in a TO-92 package for medium power applications. Features Pb-Free Packages are Available Technical Documentation & Design Resources Data Sheets (1) Package Drawings (1) Product Status Compliance Description Package MSL Container
PNP/NPN Transistor, Used for General Purpose and Low Noise ...
http://www.burrillandco.com/pz565e3d6-cz5b28e70-pnp-npn-transistor-used-for-general-purpose-and-low-noise-audio.html
PNP/NPN Transistor, Used for General Purpose and Low Noise Audio ...
Ultra low noise amplifiers - JanasCard
http://www.janascard.cz/PDF/Design%20of%20ultra%20low%20noise%20amplifiers.pdf
That is an ultra low noise JFET 2SK170 and 2SK369 from Toshiba (now obsolete) or equivalent LSK170 from Linear Systems (www.linearsystems.com)[5] with voltage noise density bellow 1 nV/√Hz. BF862 from Philips is another excellent choice but its noise is specified at 100 kHz. InterFET has very low noise IF9030 and IF3601 with noise density 0.5 and 0.3 nV/√Hz …
Audio Dual Matched PNP Transistor Data Sheet …
https://www.analog.com/media/en/technical-documentation/data-sheets/SSM2220.pdf
SSM2220 is a dual, low noise, matched PNP transistor , which has been optimized for use in audio applications. The ultralow input voltage noise of the . SSM2220. is typically only 0.7 nV/√Hz over the entire audio bandwidth of 20 Hz to 20 kHz. The low noise, high bandwidth (190 MHz), and offset voltage of
THAT Corporation 300-series Low-Noise Matched Transistor ...
http://thatcorp.com/300-series_Matched_Transistor_Array_ICs.shtml
With typical base-spreading resistances of 25 Ohms for the PNP devices (30 Ohms for the NPNs), their low voltage noise of under 1 nV/Hz½, the 300 series are ideally suited for low-noise amplifier input stages, among other applications.
Ultra low noise amplifiers - Dicks-website
http://dicks-website.eu/low_noise_amp_part3/part3.html
ultra-low noise transistors. - diyAudio
https://www.diyaudio.com/community/threads/ultra-low-noise-transistors.17285/
If you are looking for ultra low voltage noise (2 ohm base resistance), BFG16A (SOT223A) or BFQ17 (SOT89) might be interesting. Mind you, hFE is not very high and as far as I remember the 1/f corner is not particularly low, so these are not the right transistors if you want low current noise. See www.semiconductors.philips.com for more info.
Lowest noise BJT transistor? - diyAudio
https://www.diyaudio.com/community/threads/lowest-noise-bjt-transistor.222485/
For extremely low voltage noise, the Philips/NXP BFW16A used to be a good choice because of its low base resistance, but it is out of production. You could try a more modern low-noise wideband transistor, such as the BFU760F (RB=3.32 ohm …
Extreme Low Noise Preampifier - Beis
https://www.beis.de/Elektronik/LNPreAmp/LNPreAmp.html
The best ones all were high-voltage power transistors. My favorites up now are BF459 or MJE13007. BF459 is better when current noise matters, i. e. impedances like dynamic microphones and low gains. MJE13007 produces less voltage noise, but much more current noise and is better for low-impedance sources like ribbon microphones and high gains.
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