2SK30 datasheet, 2SK30 pdf, 2SK30 data sheet, datasheet, data sheet, pdf, Hitachi Semiconductor, Silicon N Channel MOS FET High Speed Power Switching. Category. Description. Company, Toshiba America Electronic Components, Inc. Datasheet, Download 2SK30 datasheet. Cross ref. Similar parts: KSK Quote. 2SK30 Datasheet, 2SK30 PDF, 2SK30 Data sheet, 2SK30 manual, 2SK30 pdf, 2SK30, datenblatt, Electronics 2SK30, alldatasheet, free, datasheet, Datasheets, .

Author: Dukus Maugore
Country: Austria
Language: English (Spanish)
Genre: Sex
Published (Last): 24 June 2013
Pages: 478
PDF File Size: 7.28 Mb
ePub File Size: 11.91 Mb
ISBN: 802-5-53190-694-5
Downloads: 89339
Price: Free* [*Free Regsitration Required]
Uploader: Mezigar

The main amp of it still works okay. I realize 20MHz ain’t all datashdet much, but it’s quite a bit higher than “audio” I would think. To minimize risks of damage or injury to persons or.

On Wed, 18 Nov The look of panic on my face was replaced by the look of deep confusion. Vertical input designs where the input can vary over a wide range like with differential amplifiers take special steps to maintain a constant drain current.

2SK30 Datasheet catalog

I found one of the same type that had a lower Vgs and it worked, but I only had one that had low enough Vgs, not enough to fix both channels, besides, the max. Some people may remember my HV multiplier problem with my from a little over a year ago. NEC Corporation assumes no responsibility for any losses incurred by the customer or third. Does anybody here have experience with this circuit? Do you already have an account? Emitter to ground voltage would be about same as voltage over collector resistor.

Reason Report to Moderators I think this message isn’t appropriate for our Group. Yes, my password is: However, it turned out to be broken as well, but did show a trace. No license, either express, implied or otherwise, is granted under any patents, copyrights or other. daasheet


On Tue, Nov 17, at Even Fairchild made a ksk30, y grade has a Idss of 1. Log in or Sign up. It turned out that Vgs of the jfet I used was too high. Now the only thing I’m not sure about is if I read the curves correctly. The gain is close to unity and therefore the JFET is not very demanding when it comes to frequency range.

See schematic at http: In older designs you will find a pair of matched JFETs with the top one acting as the buffer and the bottom one acting as a constant current load.

And the signal of Q base is converted from a single-ended signal to a paraphrase signal by differential amplifier. Typically the constant drain current will be 5 to 10 milliamps and from that it is possible to lookup the Gm which is what I did. If customers intend to use NEC devices for applications other than those specified for Standard quality grade.

The incorporation of these circuits. Transportation equipment automobiles, trains, ships, etc. The new topic will begin with this message. Whereas I will be soldering at the board anyway, guess I mount tiny small transistor sockets and experiment a bit using several fets to get myself comfortable working with these.

Since this is a 20MHz scope I panicked a little. Close to Alkmaar, Netherlands.

Hello all, Short version: There are several curves plotted, should I measure Vgs off for a particular jfet and then use the curve that starts at that Vgs off voltage? NEC Corporation does not assume any liability for infringement of patents, copyrights or other intellectual property. When particular JFETs are recommended for audio applications, that’s because of low noise, not poor frequency response.

I chose the 2SK30 since it’s input capacitance is closer to the original 2SK and the scope seems to be working fine. Measure the THD to see if there is any problem. Makes sense to use a low noise jfet for oscilloscope input, if the frequency response is overly critical.


Are the FETs deteriorated?

(PDF) 2SK30 Datasheet PDF Download – N-Channel Silicon MOSFET

Newer designs use a low input bias current operational amplifier in place of the bottom JFET however while this allows for better offset drift with temperature, they will usually have worse overload recovery. For a 20 MHz oscilloscope, it would be difficult to find a small signal JFET which is too slow and that is why it worked.

Ian van der Neut. On Wed, Nov 18, at 9: The Specific quality grade applies only to devices developed based on a. While NEC Corporation has been making continuous effort to enhance the reliability of its semiconductor devices. It looks very nice, and it is in original condition. So how is it that a jfet specified for low frequencies can be used for 20MHz bandwidth scope?

2SK30 Datasheet PDF – Toshiba

From the datasheet http: NEC Corporation assumes no responsibility for any errors which may appear in. I read about the design, dont remember where, ddatasheet the input amplifier to the Tek scope.

Good to know as a rule of thumb for the newbie: Share This Page Tweet. Searching the datasheet I stumble over other partnumbers, without graphs of this FETs behavior. Some day I’ll figure it out: Search Only Within This Topic.