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1858-0044 ?
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09-28-2023, 12:46 AM
Post: #1
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1858-0044 ?
Did anyone ever find out a cross reference for this part?
It is used for the thermal print head, display and motor drivers on calculators like the 19C and 91, 92 and 97. There are lots of mentions of cross references to the Allegro TPQ3904 which I think is wrong as these are rated at 200mA, and not sufficient considering the 500mA heads. The Allegro TPQ2222A might be a better replacement as it has the same pinout and rated up to 600mA. Some are still around from Digikey for example, but expensive. There is a cheaper surface mount part but would need a carrier PCB to convert to through hole mounting. cheers Tony |
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1858-0044 ? - teenix - 09-28-2023 12:46 AM
RE: 1858-0044 ? - AndiGer - 09-28-2023, 07:09 AM
RE: 1858-0044 ? - brouhaha - 09-28-2023, 09:25 PM
RE: 1858-0044 ? - teenix - 09-28-2023, 10:03 PM
RE: 1858-0044 ? - brouhaha - 09-29-2023, 07:46 PM
RE: 1858-0044 ? - Jeff_Birt - 09-28-2023, 10:44 PM
RE: 1858-0044 ? - teenix - 09-29-2023, 10:22 PM
RE: 1858-0044 ? - brouhaha - 09-30-2023, 05:58 AM
RE: 1858-0044 ? - Hiwi - 10-11-2023, 01:37 PM
RE: 1858-0044 ? - teenix - 10-19-2023, 12:52 AM
RE: 1858-0044 ? - jklsadf - 12-11-2023, 06:53 AM
RE: 1858-0044 ? - brouhaha - 12-11-2023, 09:58 AM
RE: 1858-0044 ? - jklsadf - 12-19-2023, 04:13 AM
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