William Gaatjes
Lifer
- May 11, 2008
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In that case, (presumably) it is a VERY rare, faulty or mis-labeled component. Assuming the meter has read the resistor value correctly.
I believe there is a 499 Ohms value version, which this may have got mixed up with on the production line, by mistake or something.
Or they could even be (VERY rare) fakes, which have entered the (apparently genuine) supply chain ?
If you are worried, you could try contacting mouser ?
(But best to confirm with another multimeter and/or use a known resistor value and check it reads about the correct value, first).
That is very possible, it can also be counterfeit. Not even from Vishay. Maybe bought through a broker.
I remember a customer we have at work, ordered a set of ceramic capacitors which seem to be made by Murata for a design that was going into production. These capacitors of course failed after some time because of over voltage stress. When the part number was send to Murata, it turned out that this specific model did not exist, not at that rated voltage, only at lower voltages. The stickers on the reel had been replaced with fake stickers mentioning a higher rated voltage.