Questions tagged [obsolescence]

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Clock divide by 5 - All ICs obsolete?

I've got an obsolete part in a design (SY100S839VZG) that is being used to take a single 100MHz clk and divide it down into two PECL p/n pairs. For the life of me, I cannot seem to find a single ...
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1answer
61 views

Is it easy to predict or get notified about obsolescence for DIP ICs?

The question here might seem a bit tangent for this Stack Exchange but here it goes. In the product development phase, one of the important factors under consideration is the availability of selected ...
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1answer
83 views

Options for replacing a broken charger when dealer no longer sells these [closed]

First post on this exchange, please do not delete it as a "request for shopping recommendation", this is close to, but not intended as one of those. We have a Trimble DiNi 22 which runs fine, but we ...
-2
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1answer
113 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
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4answers
400 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, ...
52
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6answers
15k 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
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2answers
559 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
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1answer
85 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
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1answer
151 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
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1answer
3k 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
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3answers
11k 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 ...
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2answers
582 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
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2answers
1k 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+) ...