Looking for an old Motorola IC OpAmp SC9533P (7308)

[crazyself]

I am looking for an old component, an operational amplifier integrated circuit from Motorola: SC9533P, or a compatible one. Two of these are used in the amplifier circuit of a Grundig Studio 65 turntable from the 70s. I found the electronic schematic in PDF, where the component appears with a different nomenclature, but it is illegible. From the legible part, it is possible to identify that it starts with the prefix MC, has some numbers, and ends with the letter P. Attached are a photo of the component in the turntable and the schematic in PDF. If anyone knows the original component or a compatible one, or where I can find it, I would greatly appreciate it.

 

[danadak]

Its got a heat spreader in lieu of 6 pins in the middle. a power opamp ?

Might have been a stamp off part number for Grundig.


Regards, Dana.

 

[uawahrani]

You might want to try looking for an MC1433P operational amplifier. This could be a compatible replacement for the SC9533P used in your Grundig Studio 65 turntable. You can search for it in electronics component stores or online marketplaces specializing in vintage electronic parts.

 

[AnalogKid]

That is an early audio power amplifier, probably rated for 2-5 W. GE made similar parts in the PA2xx series. In the 1970's, Sprague made the ULN2280 / 2281; they have the same package and probably the same pinout. Also, National made a variation of the LM380 in that package, plus the LM384.

The Sprague part has the same package with the triple-wide ground tabs. The National parts have the same pinout, but 3 separate ground pins instead of a tab. None of them have the bat-wing tabs you show.

Page 27: http://www.bitsavers.org/components...Sprague_Semiconductors_Short_Form_Catalog.pdf

https://www.ti.com/lit/ds/symlink/lm380.pdf?ts=1717840315093&ref_url=https%253A%252F%252Fwww.google.com%252F

https://www.ti.com/lit/ds/symlink/lm384.pdf?ts=1717805042958

These are similar parts, but the pinout is significantly different from the Motorola part in the schematic.

Where are you located?

ak

 

[bidrohini]

You can check the details for MC1741 and MC1458.

 

[AnalogKid]

You can check the details for MC1741 and MC1458.

Why? Those parts have absolutely nothing to do with this thread.

am

 

[pity8888]

If you're searching for the Motorola SC9533P (7308) OpAmp, it's likely for a vintage electronics project or repair. These ICs were once widely used in analog circuits for their reliability and performance. Ensure compatibility and condition before purchase, as older components may vary in quality. Consider checking online marketplaces, specialty electronics suppliers, or forums for vintage electronics enthusiasts for availability and advice.

 

[Delta Prime]

If you're searching for the Motorola SC9533P (7308) OpAmp, it's likely for a vintage electronics project or repair. These ICs were once widely used in analog circuits for their reliability and performance. Ensure compatibility and condition before purchase, as older components may vary in quality. Consider checking online marketplaces, specialty electronics suppliers, or forums for vintage electronics enthusiasts for availability and advice.

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