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Altera_Forum
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16 years ago

Fpga Programmer - Quest For Fuse

Hello, i'm in between a project and stuck with the design of safety of the system. I'm in need of the following fuses, :confused: 15 mA, 3.3V 75 micro-ampere, 3.3V 15 mA...
Altera_Forum's avatar
Altera_Forum
Icon for Honored Contributor rankHonored Contributor
16 years ago

Hi,

The selection of fuses is quite complex and you also need to cosider the amount of energy that is avallable to melt the fuse wire. At the currents you are mentioning you are not going to get a standard fuse.

What you could use for the uA currents is a fusable resistor so long as you mount it correctly. For protection of the 3.3v supply and similar you can consider a hotswap controler such as http://www.linear.com/pc/productdetail.jsp?navid=h0,c1,c1003,c1006,c1163,p85534

If this is a product that is being sold then you need to protect to IEC 60950 or similar.