Switch which can handle i<4A

prohan86 said:

Hi,

I am working on a system in which I have to use a microcontroller to turn on a switch. So can any of the gurus here suggest which kind of device i have to use?? the switch has to handle currents of less than 4A.. a few frnds have suggested a relay.. but they are quite bulky.. so I am thinking of using a triac (may be BTB04-600SL).. which one should I use?? The system has to work for a long loooooooooooong time. please let me know if you have a better idea/device in mind.

Regards,
Rohan

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prohan86 said:

thanks a lot for the reply..

its dc so I will use a MOSFET. do u think it can survive heavy usage like 12 hrs a day for 10 yrs?? (while switching ON/OFF 10 times a day)

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prohan86 said:

and also what is the max Id I can pass thro a mosfet??

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prohan86 said:

Great...... but hey I am goin to put this in switch boards and that includes rooms where there will be no air conditioning.. will the temp of IC reach 70C for the usage I just mentioned, especially when the summer heat touches 45C ?? r there any methods to reduce the temp??

and also what is the max Id I can pass thro a mosfet??

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prohan86 said:

Great...... but hey I am goin to put this in switch boards and that includes rooms where there will be no air conditioning.. will the temp of IC reach 70C for the usage I just mentioned, especially when the summer heat touches 45C ?? r there any methods to reduce the temp??

and also what is the max Id I can pass thro a mosfet??

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ericgibbs said:

hi,
There is a vast range of currents available, this would suit your App.

How will the Gate be controlled.??

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prohan86 said:

Hi,

Thanks all for ur comments..

if I use the mosfet suggested by Mr Eric (Si4404DY).. can u pls suggest how much extra electricity will be consumed by Si4404DY which will be triggerd using a microcontroller compared to a manual switch ??

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