#Linear mosfet

[arnd2uza]

https://www.futureelectronics.com/p/semiconductors--discretes--transistors--mosfets/std65n55f3-stmicroelectronics-5034919

Linear mosfet, small signal mosfet, power mosfet, Transistors mosfet

N-Channel 55 V 8.5 mOhm Surface Mount STripFET Power MosFet - TO-252

[hrket2ton]

https://www.futureelectronics.com/p/semiconductors--discretes--transistors--mosfets/fdd16an08a0-onsemi-1829456

Mosfet module, Surface Mount Enhancement Mode Power MosFet, mosfet gate,

N-Channel 75 V 50 A 16 mOhm Surface Mount PowerTrench Mosfet TO-252AA

[drick2ckk]

https://www.futureelectronics.com/p/semiconductors--discretes--transistors--mosfets/si2301cds-t1-ge3-vishay-2146383

Mosfet as a switch, mosfet transistor, High voltage translator, power transistor

P-CH MOSFET SOT-23 20V 112MOHM @ 4.5V - LEAD(PB) AND HALOGEN FREE

[clitn2taker]

https://www.futureelectronics.com/p/semiconductors--discretes--transistors--mosfets/si2301cds-t1-ge3-vishay-6369524

Transistors, Mosfets, SI2301CDS-T1-GE3, Vishay

P-CH MOSFET SOT-23 20V 112MOHM @ 4.5V - LEAD(PB) AND HALOGEN FREE

[vrn2dberg]

https://www.futureelectronics.com/p/semiconductors--discretes--transistors--mosfets/irfr5410trpbf-infineon-2173906

Transistor mosfet, power mosfet, mosfet gate, mosfet module, linear mosfet

Single P-Channel 100 V 0.205 Ohm 58nC HEXFET® Power Mosfet - TO-252AA

[stnve2ane]

https://www.futureelectronics.com/p/semiconductors--discretes--transistors--mosfets/buk9y19-75b-115-nexperia-5046162

What does a mosfet do, audio mosfet, Digital transistors, power mosfet

BUK9Y19 Series 100 V 19 mOhm SMT N-Channel Logic Level MOSFET - LFPAK-56

[jmse2jacks]

Power management, mosfet power supply, Mosfet switch circuit

P-Channel 100 V 1.05 Ohm Surface Mount Mosfet - SOT-223

[mrcc2lvinn]

High power mosfet, amplify, mosfet switch, mosfet module

N-Channel 20 V 1 A 0.45 Ω Surface Mount Enhancement Mode Power MosFet - SOT-323

[mthw2lang]

Power mosfet, mosfet applications, transistor mosfet, linear mosfet

BSZ160N10NS3GATMA1 Single N-Channel 100 V 16 mOhm 19 nC OptiMOS™ Power Mosfet - TSDSON-8

[jneif3alll]

Mosfets circuits, Transistors mosfet, audio mosfet, transistor mosfet

N-Channel 20 V 1 A 0.45 Ω Surface Mount Enhancement Mode Power MosFet - SOT-323

[wrn2llder]

Mosfet transistor, high power mosfet, mosfet module, linear mosfet

IXTA32P20T Series 200 V 32 A SMT P-Channel Power Mosfet - TO-263-3

[dvin2insin]

https://www.futureelectronics.com/p/semiconductors--discretes--transistors--mosfets/irlml2502trpbf-infineon-6173881

High voltage mosfet, Small signal mosfet, mosfet voltage, linear mosfet, switch

N-Channel 20 V 0.045 Ohm Surface Mount HEXFET Power Mosfet - Micro3

[jnhn2lsmm]

https://www.futureelectronics.com/p/semiconductors--discretes--transistors--mosfets/dmg1012uw-7-diodes-incorporated-6129534

High frequency mosfet, Power mosfet, mosfet circuit diagram

N-Channel 20 V 1 A 0.45 Ω Surface Mount Enhancement Mode Power MosFet - SOT-323

[rbrt2mnnd]

https://www.futureelectronics.com/p/semiconductors--discretes--transistors--mosfets/bsp125h6327xtsa1-infineon-2060212

Power mosfet, high current mosfet audio mosfet, linear mosfet, mosfet module

Single N-Channel 600 V 45 Ohm 4.5 nC SIPMOS® Power Mosfet - SOT-223

[jsm2tphr]

https://www.futureelectronics.com/p/semiconductors--discretes--transistors--mosfets/bsp125h6327xtsa1-infineon-5173904

Transistor manufacturers, High voltage mosfet, mosfet gate, Mosfet transistor

Single N-Channel 600 V 45 Ohm 4.5 nC SIPMOS® Power Mosfet - SOT-223

[audio-luddite]

Solid Stuff.

Lets talk about transistors. There are many types and methods and there have been many products made with them. It is rather silly to lump them all into one bin and complain.

Transistors are actually quantum devices. They use fields and potentials and extra electrons or holes in the orbitals of solid materials. They make possible all those things we all associate with modern life. Your smart phone uses millions of transistors. Even the screen is an array of transistors controlling what you see. Such stuff would be physically impossible with vacuum tubes.

They go back pretty far you probably didn't know. Basically as old as vacuum tubes in theory. The Field effect transistor was first described in 1925 conceptually. The common Bipolar Junction type was demonstrated in 1947 and commercialized in the 1950s. The 6550 vacuum tube was also developed in the 1950s. The MOSFET was invented in 1959 and had many advantages especially in energy efficiency. All that real work was done at BELL Labs a private research lab owned by Bell Telephone.

In Audio the challenge was finding ways to control ever more power. Up until the late 1960s a powerful home amplifier was about 60 Watts. That was the best you could do with using either Tubes or Transistors. Very clever designers worked both ways. Harman Kardon and Dynaco both sold factory made and Kits of audio stuff as the interest was mostly in hobbyists. Both companies used tube and transistor methods and moved from one to the other as soon as they could. But they sold both tubes and Transistor equipment for some time.

Why did they change? They found transistors better. They liked the performance and manufacturing advantages. A stereo tube amplifier uses three big transformers. A transistor type needs one. Tube amplifiers use lethal voltages and are fragile. Transistors don't and aren't. And in the late 60s to early 70s transistors sounded better. Such was the opinion of the Original golden ear J Gordon Holt.

Tubes were "fuzzy" and obscured detail. Tubes had weak or muddy Bass. Transistors had clarity and speed and Power. One of the best amplifiers of that age was the Harman Kardon Citation 12. 60 Watts dual mono with quasi-complementary output transistors. Some people still say quasi is better than actual full complementary as you can properly match the transistors. That HK still sounds really good. Better than a newer Carver amp I have.

The age of the super amp was all transistor. SAE, Dynaco, Phase Linear all just added more transistors to the output and got 100, 200, 250, and then 350 Watts per channel. That followed the development of better transistors that could push more current and volts. People liked what they could do.

As in everything they were not perfect. Nothing is perfect. And today there is an avalanche of marketing and nonsense. This is best, that is best. Companies come and go. Old ways are rediscovered and called new.

Hey it is not over. People spend crazy money on the latest thing. It has a lot in common with joining a Cult. I refuse to drink the Kool Aid.

It took me a while to realize that it is not about best, or even better, just different. There are different things to hear. My lovely 1990s era tube amp has wonderful textures, but obscures tiny details I know are there. I miss them, but will forgive it for now.

I think I should just start calling it my winter amp. Toasty warm like a nice fire in the fireplace. It will rest in the summer, and I will get my tiny details back. Not about better.

There are obsolete technologies revived like tiny Single End Triode "Class A" amplifiers and big horn speakers. People can forgive flaws and limitations if they really want to. Hey I do. Old designs from the 1950s are recreated and people really like them. You can buy a brand new recreation of the Harman Kardon Citation I and II classic tube preamp and amp set. Just like the original only new parts. Old "Classic" equipment is lovingly restored to as new, but this returning to the roots still sounds like the 1950s. It wasn't that good people.

I have LPs that are pure analogue. Performance to professional tape to disc. They sound really good. I have LPs that were recorded digitally and they sound great too. I have really good CDs. So the newer technology is not automatically worse. Some is, but that is the production chain and often commercial pressures to "sound good on AM radio" like that Carly Simon LP I got.

You can build a justifiably high end system with transistors. It will sound great and be reliable. You do not have to apologize, and yes you can still socialize with the tube people.