Topic: MP-1 Noise Mod - TL072IN no longer available, is the 105C max a critical spec? (Read 481 times)

DesolationBlvd · « **on:** Time Format »

I want to perform the Noise Mod on my MP-1, since the battery died and I might as well do it while I have the case open, but 511-TL072IN is no longer available at Mouser. I notice it had a +105C maximum temperature, compared to the +85C the other available through-hole TL072s top out at. Meanwhile, the only high temperature TL072s are SMD. Is the maximum temperature a critical spec?

rnolan · « **Reply #1 on:** Time Format »

Hey DesolationBlvd, my guess is yes, particularly if it's near the tubes or anything else that gets hot. Maybe one/some of our more tech edumacated members can advise but a 20C difference is substantial.

MarshallJMP · « **Reply #2 on:** Time Format »

Use a OPA2134PA

Gregg · « **Reply #3 on:** Time Format »

OPA2134PA is also an 85C part, but wouldn’t worry about it. Should hold up fine as long as the gear is well ventilated.

If you really wanted to use a higher temp TL072 there are DIP to SMT adapters but it wouldn’t bother. MJMP’s advice is “sound.”

Gregg

DesolationBlvd · « **Reply #4 on:** Time Format »

Thanks for letting me know of the replacement you would use for the now-discontinued part. I've placed the order now.

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Author Topic: MP-1 Noise Mod - TL072IN no longer available, is the 105C max a critical spec? (Read 481 times)

DesolationBlvd

MP-1 Noise Mod - TL072IN no longer available, is the 105C max a critical spec?

rnolan

Re: MP-1 Noise Mod - TL072IN no longer available, is the 105C max a critical spec?

MarshallJMP

Re: MP-1 Noise Mod - TL072IN no longer available, is the 105C max a critical spec?

Gregg

Re: MP-1 Noise Mod - TL072IN no longer available, is the 105C max a critical spec?

DesolationBlvd

Re: MP-1 Noise Mod - TL072IN no longer available, is the 105C max a critical spec?