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Questions tagged [obsolescence]

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-2
votes
1answer
108 views

Still 1000 hours of lifetime [closed]

I am familiar with the famous Phoebus cartel of the companies Osram, Philips and GE, but this cartel began its operation in 1924 and lasted at most to the World War II. In the second half of the 20th ...
2
votes
4answers
337 views

Why are old digital ICs families still so “popular”? [closed]

Why is it so? The basic 74 series, the 4000, are such poor ICs compared to the newest families (by the 74: AUC, AUP, ALVC...), which only have advantages over the oldest one: lower power consumption, ...
45
votes
6answers
12k views

Reasons not to use a 741 op-amp?

Simple enough question. Why not use a 741 op-amp in a target circuit or anyone's target circuit? What are the reasons not to use it? What might be the reasons to still choose this part?
2
votes
2answers
558 views

Which component to use for a few GBytes of memory available for several years?

I am working on a project which is supposed to be built in small quantities (less than 50 units/year), but will probably be sold for 10 or 15 years. I am at the stage where I look at the non volatile ...
0
votes
1answer
77 views

Good replacement for 74HC573N Octal Trans D-Type Latch? [closed]

Does anyone have any recommendations on what to use? I suppose any 5V, reasonably broad temperature range (automotive application) latch would work, but if there's something people like, I'm game! I ...
4
votes
1answer
133 views

Are MESFET transistors still used in the industry?

I was looking for mesfet transistors earlier, because I need some for experiments due to their relatively simple physical structure. I can't find any of these on rs, farnell and mouser ! So I was ...
1
vote
1answer
2k views

Which MOSFETs can I use to replace these faulty obsolete ones?

I've had some transistors fail on a PCB, but I can no longer source them as they have long reached EOL and are now obsolete. The part numbers are as follows (linked to the original data sheets): ...
2
votes
3answers
10k views

1N34 / 1N270 obsolete

When I search for 1N34 on Mouser I get nothing, and when I search for 1N270 diode I only find a note that it is obsolete. What is now used in place of this part? I am using Ronald Quan's book on ...
5
votes
2answers
570 views

PCI obsolescence - IEEE1284 (EPP,ECP,LPT) printer port ASIC

I have a product in volume manufacture where the embedded CPU is now obsolete. I have to replace that CPU with a lower cost alternative. For political (and practical) reasons I don't have a choice ...
3
votes
2answers
996 views

LDR Component Obsolescence

The Light Dependent Resistor (LDR) that I use in MintyTime, Excelitas Tech VT93N2, has been discontinued by the manufacturer. I'm having trouble finding a comparably priced (e.g. < $0.50 @ 100+) ...