[sdiy] ROHS transistor arrays?

David G. Dixon dixon at interchange.ubc.ca
Tue May 5 19:33:30 CEST 2009


What do y'all think about the HFA3128 as a general-purpose PNP array?  At
less than $3, it's a heckuva lot cheaper than the THAT or SSM alternatives.

David G. Dixon
Professor
Department of Materials Engineering
University of British Columbia
309-6350 Stores Road
Vancouver, B.C. V6T 1Z4
Canada
 
Tel 1-604-822-3679
Fax 1-604-822-3619
 
"PERFECTA FINGAMUS SERVIAT NATURA"
 
The information in this email and in any attachments is confidential and
intended solely for the attention and use of the named addressee(s).  It
must not be disclosed to any person without the writer's authority.  If you
are not the intended recipient, or a person responsible for delivering it to
the intended recipient, you are not authorized to and must not disclose,
copy, distribute, or retain this message or any part of it.

> -----Original Message-----
> From: synth-diy-bounces at dropmix.xs4all.nl [mailto:synth-diy-
> bounces at dropmix.xs4all.nl] On Behalf Of Ken MacBeth
> Sent: Tuesday, May 05, 2009 9:12 AM
> To: synth-diy at dropmix.xs4all.nl; Dan Snazelle
> Subject: Re: [sdiy] ROHS transistor arrays?
> 
> 
> Hi Dan- why not try CA3083s? % transistors in a 16 pin package- 2
> independant matched apirs inside!
> 
> Kind Regards, Ken
> 
> http://www.macbethstudiosystems.com
> Home of the M3X Analogue synthesizer...
> 
> 
> --- On Tue, 5/5/09, Dan Snazelle <subjectivity at hotmail.com> wrote:
> 
> > From: Dan Snazelle <subjectivity at hotmail.com>
> > Subject: [sdiy] ROHS transistor arrays?
> > To: synth-diy at dropmix.xs4all.nl
> > Date: Tuesday, 5 May, 2009, 4:42 PM
> >
> > hey there
> >
> > so it turns out the ca3046 is now considered an obsolete
> > part and it is also non ROHS
> >
> > bad news!
> >
> > so i am wondering what other (hopefully cheaP) transistor
> > arrays are available for making things like
> > ladder filters or expo's.
> >
> > the ca3046 had four npn's right?
> >
> > the MAT chips are very expensive.
> >
> > i am going to see if the LM394 is avail as a ROHS part. I
> > also need to find a decent (not amazing) PNP pair
> >
> > i have heard that LINEAR makes transistor arrays but these
> > may just be pairs.
> >
> > anyway...any help highly appreciated.
> >
> > these need to meet ROHS standards as well.
> >
> >
> >
> > thanks
> >
> > --------------------------------------------
> > check out various dan music at:
> >
> >  http://www.myspace.com/lossnyc
> >
> > (updated monthly)
> >
> > http://www.soundclick.com/lossnyc.htm
> >
> >
> >
> > http://www.indie911.com/dan-snazelle
> >
> > (or for techno) http://www.myspace.com/snazelle
> >
> > ALSO check out Dan synth/Fx projects:
> >
> > AUDIO ARK:
> >
> > www.youtube.com/watch?v=TJRpvaOcUic
> >
> > www.youtube.com/watch?v=BqIa_lXQNTA&feature=channel_page
> >
> > www.youtube.com/watch?v=V4nJPjGgOcU&feature=channel_page
> >
> > and soundtrack/design work:
> >
> > NEW: check out Dan's sound design from the 1998 award
> > winning film SAFARI by catherine chalmers
> >
> > http://www.catherinechalmers.com/videos.cfm
> >
> >
> >
> > _______________________________________________
> > Synth-diy mailing list
> > Synth-diy at dropmix.xs4all.nl
> > http://dropmix.xs4all.nl/mailman/listinfo/synth-diy
> >
> 
> 
> 
> 
> _______________________________________________
> Synth-diy mailing list
> Synth-diy at dropmix.xs4all.nl
> http://dropmix.xs4all.nl/mailman/listinfo/synth-diy




More information about the Synth-diy mailing list