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edits
User talk:Daveb: Difference between revisions
From London Hackspace Wiki
→Switches for LED current
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* This [http://uk.farnell.com/stmicroelectronics/stp16nf06l/mosfet-n-ch-60v-16a-to220/dp/9803068 TO220 MOSFET] should carry the 0.5a curent - perhaps without any heatsinking at all. and combined with a small transister should operate well at a supply voltage of 3v. | * This [http://uk.farnell.com/stmicroelectronics/stp16nf06l/mosfet-n-ch-60v-16a-to220/dp/9803068 TO220 MOSFET] should carry the 0.5a curent - perhaps without any heatsinking at all. and combined with a small transister should operate well at a supply voltage of 3v. | ||
* This [http://uk.farnell.com/nxp/pmn34un-135/mosfet-n-ch-30v-4-9a-sot457/dp/1758106 PNM34UN] is 2A mosfet, with Rds of 0.08 at 1.8V throu to about 0.05 at 4.5V; max Vds of 30V; £0.16 each. there are several similar parts at Vds 30V for a bit more money. | * This [http://uk.farnell.com/nxp/pmn34un-135/mosfet-n-ch-30v-4-9a-sot457/dp/1758106 PNM34UN] is 2A mosfet, with Rds of 0.08 at 1.8V throu to about 0.05 at 4.5V; max Vds of 30V; £0.16 each. there are several similar parts at Vds 30V for a bit more money. [http://www.digikey.co.uk/product-detail/en/PMN34UN,135/568-7420-1-ND/2698079 digikey ] is more expensive for this part. | ||
* [http://uk.farnell.com/nxp/pmn27un-135/mosfet-n-ch-20v-5-7a-sot457/dp/1758104 PMN27UN] is similiar to the above; but 20V max Vds with a bit smaller Rds(on) - also marginally cheaper. | * [http://uk.farnell.com/nxp/pmn27un-135/mosfet-n-ch-20v-5-7a-sot457/dp/1758104 PMN27UN] is similiar to the above; but 20V max Vds with a bit smaller Rds(on) - also marginally cheaper. | ||
