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high temperature hall sensor

vamsee

Jan 10, 2013
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Hi all!!

I need hall sensor with 200°C operating temp. i cud find max of 150°C..

will allegro, honeywell or anyother hall sensor producers customize it ?

pls let me know
 

(*steve*)

¡sǝpodᴉʇuɐ ǝɥʇ ɹɐǝɥd
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Most semiconductors are rated only to 150C. Many are rated to lower temperatures. A few are rated to 175C. I've not seen any higher.
 

vamsee

Jan 10, 2013
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Most semiconductors are rated only to 150C. Many are rated to lower temperatures. A few are rated to 175C. I've not seen any higher.

thanx for the reply.. will they customize it to 200°C?
 

vamsee

Jan 10, 2013
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i have mailed them, but still waiting for the reply..
 

Harald Kapp

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They probably will not do it. Above 150°C semiconductor physics becomes tricky and 200°C operation may simply be not possible.
 

vamsee

Jan 10, 2013
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They probably will not do it. Above 150°C semiconductor physics becomes tricky and 200°C operation may simply be not possible.

Is that good idea to use heat insulator around 150°C hall sensor in the 200°C ambient temp?
 

Harald Kapp

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Not if you can't actively cool the sensor to below 150 °C

Maybe you can use a rod of magnetically soft material to sense the field and bring it to the sensor loacted in a cooler environment ? Probably not very practical, though.
 
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