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| Quick Question: Fluke 8600A - (S)N7447B BCD Driver (65 °C) temps okay? |
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| kblue:
Greetings once again! I repaired a Fluke 8600A and its running fine again within specs. But i'm not sure about the temps of the BCD-Driver marked with N7447B. For Ti SN7447A Ta is specified around 0 - 70 °C. The IC in question settles around 65 °C (23 °C ambient) outside the instrument, is this "okayish"? Mayhaps it's better to fit a flat heatsink onto it for more surface area? 5 V supply seems okay (4,9995 V). Thanks in advance! /update 06/05/2024: a little heatsink reduced the temps around 10-15 °C |
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