high temperature hall sensor

[vamsee]

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*)]

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]

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]

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

 

[Harald Kapp]

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

 

[vamsee]

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]

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.