NTE2320 CROSS? (Any IC w/ 2NPN & 2 PNP)

------------------------------

Does anyone know of any NTE2320-equivalent ICs?

The NTE2320 has 2 NPN and 2 PNP transistors, in a 14-pin DIP package
(two matched pairs).

Mouser.com part number is 526-NTE2320. Link to datasheet is there.

It's fairly expensive ($47 for 10). So I'd like to find a cheaper
equivalent, if possible.

It needs to be in a through-hole package (or easily hand-solderable).
But it doesn't necessarily have to be 14-pin DIP.

Thanks.

Regards,

Tom Gootee

tomg AT fullnet.com

http://www.fullnet.com/u/tomg

------------------------------

 

[Franc Zabkar]

On 8 Oct 2005 08:11:26 -0700, tomg@fullnet.com put finger to keyboard
and composed:

Does anyone know of any NTE2320-equivalent ICs?

The NTE2320 has 2 NPN and 2 PNP transistors, in a 14-pin DIP package
(two matched pairs).

MPQ6501
MPQ6502
MPQ6700
TPQ6501
TPQ6501A
TPQ6502
TPQ6502A

-- Franc Zabkar

Please remove one 'i' from my address when replying by email.

 

---------------------------------------------------------------

Thanks, Franc Zabkar!

It looks like the MPQ6501, MPQ6502, and MPQ6002 are in 14-DIP (TO-116)
packages, with the same pinouts as the NTE2320. The MPQ6700 appears to
be a surface-mount part.

And it looks like the specs of the MPQ6502 and the MPQ6002 match those
of the NTE2320, basically exactly. Apparently, they each contain two
2N2222 and two 2N2907, as two complementary matched pairs.

Unfortunately, neither Mouser.com nor Digikey.com stocks the MPQ6502 or
MPQ6002.

I'll do some searches and report back with any sources I find, for the
sake of the archive. In the meantime, if anyone already knows of any
sources, please post the information.

(P.S. I didn't yet find any info about the TPQ parts that were
mentioned.)

Regards,

Tom Gootee

tomg AT fullnet.com

http://www.fullnet.com/u/tomg/gooteect.htm

---------------------------------------------------------------

 

[Franc Zabkar]

On 10 Oct 2005 12:47:33 -0700, tomg@fullnet.com put finger to keyboard
and composed:

It looks like the MPQ6501, MPQ6502, and MPQ6002 are in 14-DIP (TO-116)
packages, with the same pinouts as the NTE2320. The MPQ6700 appears to
be a surface-mount part.

It may have been available in DIP form also.

Check NTE's onsite xref:
http://nte01.nteinc.com/nte/NTExRefSemiProd.nsf/$$Search?OpenForm

And it looks like the specs of the MPQ6502 and the MPQ6002 match those
of the NTE2320, basically exactly. Apparently, they each contain two
2N2222 and two 2N2907, as two complementary matched pairs.

Unfortunately, neither Mouser.com nor Digikey.com stocks the MPQ6502 or
MPQ6002.

I'll do some searches and report back with any sources I find, for the
sake of the archive. In the meantime, if anyone already knows of any
sources, please post the information.

(P.S. I didn't yet find any info about the TPQ parts that were
mentioned.)

If you like I can post Sprague's TPQ datasheets on my web space. The
package styles are all DIP14.

Otherwise here are some basic specs:

http://www.datasheetarchive.com/semiconductors/specsheet.php?specsheet=2139170
http://www.datasheetarchive.com/semiconductors/specsheet.php?specsheet=2139167
http://www.datasheetarchive.com/semiconductors/specsheet.php?specsheet=2139166

My Sprague databook indicates that TPQ6600 and TPQ6600A also came in
the same package and PNP/NPN layout. There is also a cross reference
to identically numbered MPQ Motorola parts, but no other second source
is listed for these.

FWIW, according to http://www.usbid.com, the MPQ parts were made by
NSC, Sprague, Motorola, CEM (?), and CSM (?).

-- Franc Zabkar

Please remove one 'i' from my address when replying by email.

 

Thanks, Franc!

I did find the Sprague datasheets, for the TPQ65xx parts. I can't
remember WHERE; maybe through the allegromicro.com website. But
thanks for offering.

And I think that TI was also mentioned as a manufacturer of the TPQ
parts.

The MPQ6700 is in stock at www.mouser.com. But only in surface-mount
form, as far as I can tell. But, it looks like it's the same size as a
DIP-14 package. So maybe I could use it. Unfortunately, it has a
different pinout than the others, which would mean changing a PCB
layout.

By the way, I think that I was wrong about the pinout of the MPQ6002.
It's slightly different than the others, if I recall correctly.

At any rate, I now need to find a source of supply, for something like
the MPQ6502. I have found them, from various suppliers of obsolete
ICs, on the web. But I haven't quite been able to find out, yet, if
any equivalent through-hole IC is still being manufactured (besides the
NTE2320).

Any additional info, or sources, would be greatly appreciated.

Regards,

Tom Gootee

 

[Franc Zabkar]

On 11 Oct 2005 10:05:50 -0700, tomg@fullnet.com put finger to keyboard
and composed:

Thanks, Franc!

I did find the Sprague datasheets, for the TPQ65xx parts. I can't
remember WHERE; maybe through the allegromicro.com website. But
thanks for offering.

And I think that TI was also mentioned as a manufacturer of the TPQ
parts.

The MPQ6700 is in stock at www.mouser.com. But only in surface-mount
form, as far as I can tell. But, it looks like it's the same size as a
DIP-14 package. So maybe I could use it. Unfortunately, it has a
different pinout than the others, which would mean changing a PCB
layout.

I notice that Fairchild have an smt version, MMPQ6700. It is a 16-pin
device.

Is there any reason why you don't just use discrete transistors? Is it
for manufacturing reasons? If it's for matching purposes, then AFAICT
the devices in these arrays are not matched any better than discretes
from the same batch.

By the way, I think that I was wrong about the pinout of the MPQ6002.
It's slightly different than the others, if I recall correctly.

Yes, you're right.

http://www.centralsemi.com/leadedpdf/MPQ6002.PDF

At any rate, I now need to find a source of supply, for something like
the MPQ6502. I have found them, from various suppliers of obsolete
ICs, on the web. But I haven't quite been able to find out, yet, if
any equivalent through-hole IC is still being manufactured (besides the
NTE2320).

Any additional info, or sources, would be greatly appreciated.

The MPQ7053 may also be suitable. Central Semi
(http://www.centralsemi.com) claim to have it in stock. They also
claim to stock the other MPQ parts.

Try emailing them at salesinquiry at centralsemi dot com.

This is their search engine:
http://www.centralsemi.com/search/default.asp

More data:
http://www.centralsemi.com/leadedpdf/MPQ6700.PDF
http://www.centralsemi.com/leadedpdf/LSSGP079.PDF

Motorola also manufactured the MPQ7051 and MPQ7052 NPN/PNP quad
arrays, but I don't have the pinouts for those.

Regards,

Tom Gootee

-- Franc Zabkar

Please remove one 'i' from my address when replying by email.

 

Franc Zabkar wrote:

On 11 Oct 2005 10:05:50 -0700, tomg@fullnet.com put finger to keyboard
and composed:

[snipped]

Is there any reason why you don't just use discrete transistors? Is it
for manufacturing reasons? If it's for matching purposes, then AFAICT
the devices in these arrays are not matched any better than discretes
from the same batch.

Franc,

Thanks for all of the additional info! Sorry it took me so long to
respond. I've been away.

The main reason that I want to use an IC transistor array is so that
the thermal variations are more-closely matched. But I was also under
the impression that the transistors would be matched better than
discrete ones. Maybe I should also look at things like the LM394.

Thanks again! You have been so very helpful. I truly appreciate it.

Regards,

Tom Gootee


[snipped]

-- Franc Zabkar

Please remove one 'i' from my address when replying by email.

 

Update:

Brett Singer of Central Semi has been kind enough to send me free
samples (4 each) of the MPQ6502 quad array (2 NPN + 2 PNP in DIP14
case), and also the 2N3811A, 2N3811, 2N3810A, and 2N3810 dual PNP parts
(TO-78 cans). [The "A" versions of the duals are spec'ed for matching
to within 1.5 mV Vbe and 5% hfe. And the non-A versions are spec'ed to
within 3 mV Vbe and 10% hfe.]

I'll let you know how they work out.

Regards,

Tom Gootee

http://www.fullnet.com/u/tomg/gooteect.htm