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LTC491IS

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File Size : 116 KB Manufacturer:LINEAR Description:The LM34 can be applied easily in the same way as other integrated-circuit temperature sensors It can be glued or cemented to a surface and its temperature will be within about 0 02 F of the surface temperature This presumes that the ambient air temperature is almost the same as the surface temperature if the air temperature were much high- er or lower than the surface temperature the actual temper- ature of the LM34 die would be at an intermediate tempera- ture between the surface temperature and the air tempera- ture This is expecially true for the TO-92 plastic package where the copper leads are the principal thermal path to carry heat into the device so its temperature might be clos- er to the air temperature than to the surface temperature To minimize this problem be sure that the wiring to the LM34 as it leaves the device is held at the same tempera- ture as the surface of interest The easiest way to do this is to cover up these wires with a bead of epoxy which will insure that the leads and wires are all at the same tempera- ture as the surface and that the LM34 dies temperature will not be affected by the air temperature The TO-46 metal package can also be soldered to a metal surface or pipe without damage Of course in that case the Vb terminal of the circuit will be grounded to that metal Alternatively the LM34 can be mounted inside a sealed-end metal tube and can then be dipped into a bath or screwed into a threaded hole in a tank As with any IC the LM34 and accompanying wiring and circuits must be kept insulated and dry to avoid leakage and corrosion This is especially true if the circuit may operate at cold temperatures where condensation can occur Printed-circuit coatings and var- nishes such as Humiseal and epoxy paints or dips are often


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	1PCS	100PCS	1K	10K
价格


型号：LTC491IS 厂家：LINEAR 封装：SMD 批号：440 数量：1247 说明：QQ：104735486 611606076


运费：运费到付10.00元（快递）20.00元（顺风）所在地：深圳新旧程度：