Jfet transistor 2SK41E - UK Vintage Radio Repair and Restoration Discussion Forum

Nukeybrown · 29th Sep 2018, 9:54 pm

Looking for a FET transistor 2SK41E which i believe the nte equiv is NTE312 just cannot seem to find one in the uk.

Philips210 · 29th Sep 2018, 10:53 pm

Hi.

In my Towers' International MOSpower and other FET Selector book, it states the 2SK41E as having a BF256A or a 2N5246 as substitutes.

Regards
Symon.

Nukeybrown · 30th Sep 2018, 12:41 am

Thank will give these a try.

Radio Wrangler · 30th Sep 2018, 8:25 am

Just watch out for different pin orientations

David

Bazz4CQJ · 30th Sep 2018, 11:02 am

Just looking at the attached datasheet, I wonder if the 2sk19 might be useable?
That was popular in FM front ends in its day and I'm sure I have some, as may many others. Wonder what you need it for?

B

Wendymott · 30th Sep 2018, 11:57 am

I bought my NTE312's from ebay... simples

Nukeybrown · 30th Sep 2018, 12:01 pm

Not so simples, none in the uk , all are usa and postage is twice the cost of the transistor making it £20 a transistor infact 2 of the ones listed are showing £166 postage

ukcol · 30th Sep 2018, 12:28 pm

My ECA comparison tables book (12th edition 2001) lists BFS70, 2N3821, 2N5246 & 2SK161 as comparable to the 2SK41.

I don't know what the significance of the E suffix is, perhaps pin-out or a selected parameter group and so the E may be important in your application.

Nukeybrown · 30th Sep 2018, 12:59 pm

Its on a marantz 2015 in the tuner section.

Bazz4CQJ · 30th Sep 2018, 1:31 pm

Is it the RF amp; that was quite a common thing? I have a front end from a Leak Delta tuner that uses the 19. I can let you have a 2SK19GR (see the data sheet I posted) if you want to try that. I think I'm right in saying that the J-fets, especially the early ones, were notoriously inconsistent and variable devices in terms of manufacture and so the specs are quite "nominal" anyway. Happy to pop one in the post if you send me your address via PM.

B

Radio Wrangler · 30th Sep 2018, 6:17 pm

The specs on JFETs were wider than the proverbial barn door. If you just need something with a decent chance to try, 2N5245 ought to have a good chance as I suspect the E suffix is one at the high end of the spread for Idss and Gfs.

2N4416 is another good VHF front end device, but lower Idss and Gfs.

David

29th Sep 2018, 9:54 pm	#1
Nukeybrown Heptode Join Date: Jan 2016 Location: Gateshead, Tyne and Wear, UK. Posts: 504	Jfet transistor 2SK41E Looking for a FET transistor 2SK41E which i believe the nte equiv is NTE312 just cannot seem to find one in the uk.

29th Sep 2018, 10:53 pm	#2
Philips210 Nonode Join Date: May 2007 Location: Redruth, Cornwall, UK. Posts: 2,578	Re: Jfet transistor 2SK41E Hi. In my Towers' International MOSpower and other FET Selector book, it states the 2SK41E as having a BF256A or a 2N5246 as substitutes. Regards Symon.

30th Sep 2018, 12:41 am	#3
Nukeybrown Heptode Join Date: Jan 2016 Location: Gateshead, Tyne and Wear, UK. Posts: 504	Re: Jfet transistor 2SK41E Thank will give these a try.

30th Sep 2018, 8:25 am	#4
Radio Wrangler Moderator Join Date: Mar 2012 Location: Fife, Scotland, UK. Posts: 22,894	Re: Jfet transistor 2SK41E Just watch out for different pin orientations David __________________ Can't afford the volcanic island yet, but the plans for my monorail and the goons' uniforms are done

30th Sep 2018, 11:57 am	#6
Wendymott Octode Join Date: Jun 2013 Location: Huddersfield, West Yorkshire, UK. Posts: 1,795	Re: Jfet transistor 2SK41E I bought my NTE312's from ebay... simples __________________ Should get out more. Regards Wendy G8BZY

30th Sep 2018, 12:01 pm	#7
Nukeybrown Heptode Join Date: Jan 2016 Location: Gateshead, Tyne and Wear, UK. Posts: 504	Re: Jfet transistor 2SK41E Not so simples, none in the uk , all are usa and postage is twice the cost of the transistor making it £20 a transistor infact 2 of the ones listed are showing £166 postage

30th Sep 2018, 12:28 pm	#8
ukcol Rest in Peace Join Date: May 2003 Location: Harlaxton, Lincolnshire, UK. Posts: 3,944	Re: Jfet transistor 2SK41E My ECA comparison tables book (12th edition 2001) lists BFS70, 2N3821, 2N5246 & 2SK161 as comparable to the 2SK41. I don't know what the significance of the E suffix is, perhaps pin-out or a selected parameter group and so the E may be important in your application.

30th Sep 2018, 12:59 pm	#9
Nukeybrown Heptode Join Date: Jan 2016 Location: Gateshead, Tyne and Wear, UK. Posts: 504	Re: Jfet transistor 2SK41E Its on a marantz 2015 in the tuner section.

30th Sep 2018, 1:31 pm	#10
Bazz4CQJ Dekatron Join Date: Apr 2009 Location: Oxfordshire, UK. Posts: 4,935	Re: Jfet transistor 2SK41E Is it the RF amp; that was quite a common thing? I have a front end from a Leak Delta tuner that uses the 19. I can let you have a 2SK19GR (see the data sheet I posted) if you want to try that. I think I'm right in saying that the J-fets, especially the early ones, were notoriously inconsistent and variable devices in terms of manufacture and so the specs are quite "nominal" anyway. Happy to pop one in the post if you send me your address via PM. B __________________ Saturn V had 6 million pounds of fuel. It would take thirty thousand strong men to lift it an inch.

30th Sep 2018, 6:17 pm	#11
Radio Wrangler Moderator Join Date: Mar 2012 Location: Fife, Scotland, UK. Posts: 22,894	Re: Jfet transistor 2SK41E The specs on JFETs were wider than the proverbial barn door. If you just need something with a decent chance to try, 2N5245 ought to have a good chance as I suspect the E suffix is one at the high end of the spread for Idss and Gfs. 2N4416 is another good VHF front end device, but lower Idss and Gfs. David __________________ Can't afford the volcanic island yet, but the plans for my monorail and the goons' uniforms are done