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Old 3rd April 2003, 03:13 PM   #1
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Hi
ive found a few tubes of some Npd5566 s just wondered if any one had any info on these devices i have 230 of these.

cheers

Anthony Kirby
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Old 3rd April 2003, 04:42 PM   #2
UrSv is offline UrSv  Sweden
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It is 2N5566 according to Thorsten:

http://www.users.nac.net/markowitzgd/phonopre.html
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Old 3rd April 2003, 04:56 PM   #3
AuroraB is offline AuroraB  Norway
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Holy smokes....or better not !!!

These were used quite extensively by Erno Borbely in the mid 80-ies, along with the comlementary AH5020. Among other things in his DC100 amplifier. Obsolete National Semi type. Should be very roughly something like 2SK389.....
Might be interested in a few...

If a net search doesn't give any results, I do have a paper data sheet somewhere. Unable to dig it out until next week though....going skiing in the weekend..
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Old 3rd April 2003, 11:11 PM   #4
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Default npd5566

A data sheet would be great .

im sure we could come to some arrangement if you wanted a few.
I do have 230 of these devices thought they could be used as part of an input stage for an amp design.

Cheers

Anthony
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Old 4th April 2003, 12:31 AM   #5
jcarr is offline jcarr  United States
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Anthony: The NPD5566 is National Semiconductor's version of the N-ch JFET 2N5566. The package is an SO08, and the Vdg and Vgs are both 40V. Idss ranges from 5mA to 30mA. gfs ranges from 7000 umhos minimum to 12,500 umhos. goss is 45umhos. Ciss 12pF, Crss 3pF.

This information is taken from National Semiconductor's "Discrete Diode, Bipolar Transistor, and JFET Products Databook", 1996 edition, pages 7-57~7-61. I don't have the datasheets scanned, so I can't provide any curves, but if it is numerical data that you want, just ask. This is a member of the 2N5564~66 family, so if you can find scanned datasheets or curves for any of these devices, the information should be fairly relevant for your NPD5566's as well.

I believe that Spectral used something like the NPD5566 (but in a DIP-8 package) in some of their preamps. I have used the 5564~66 family on occasion, with no significant problems. But I wouldn't suggest running them at the full 40V unless you want DC offset (due to gate leakage currents).

hth, jonathan carr
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Old 4th April 2003, 01:45 PM   #6
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Hi,

Indeed a 2N5566 junction (diode) isolated dual J-Fet. It is in the National J-Fet databook of 1977 I have here.

The datasheet of the Siliconix 2N5566 is here:

http://www.vishay.com/docs/70254/70254.pdf

What package do you have? If itís the Dil package:

Pin Fet

1 S1
2 D1
3 N.C.
4 G1
5 S2
6 D2
7 N.C.
8 G2

Can send you a photocopy by snailmail of the NPD5566 beginning next week. E-mail me then if you like.

Cheers
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Old 4th April 2003, 07:46 PM   #7
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Quote:
Can send you a photocopy by snailmail of the NPD5566 beginning next week. E-mail me then if you like.
Hi Pjotr,

Can you send onr to me also?

And btw, can you tell me where I can buy the NPD5566/64 in Holland?

Thanks!

Audiofanatic
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Old 4th April 2003, 08:55 PM   #8
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Default NPD5566

Hi,

Thank you all for your help much apreachiated.

Since i have 230 of these id be whilling to sell some,I mean I can't use them all : ).

Im thinking £3.00 each and a minimum order of £20 + £4 for postage to most places in Europe and the U.S

Cheers

Anthony Kirby
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Old 5th April 2003, 11:15 AM   #9
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Hi Anthony,

The Siliconix 2N5566 and the National one are not the same. Although I posted a link to the Siliconix one, the National one is slightly different. The Siliconix one is a two chip matched pair one and the National one is a monolithic single chip one. But they are interchangeable in most applications.

Cheers
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Old 9th April 2003, 02:29 PM   #10
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Default Re: NPD5566

Quote:
Originally posted by ANTHONY2181
Hi,

Thank you all for your help much apreachiated.

Since i have 230 of these id be whilling to sell some,I mean I can't use them all : ).

Im thinking £3.00 each and a minimum order of £20 + £4 for postage to most places in Europe and the U.S

Cheers

Anthony Kirby
Hi Anthony,

I want some, please email me.

regards,
Hartmut
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