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Author Topic: How to choose ir led?? mW/sr? forward current?  (Read 2007 times)

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Offline nandoanalogTopic starter

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How to choose ir led?? mW/sr? forward current?
« on: April 14, 2016, 07:04:19 am »

 Until now I got my IR leds from ebay by searching ie: "1W 940nm led".
 But, what if I want to buy from mouser/digikey/rs??  How do I know how much "light" the led emits?
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Offline McBryce

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Re: How to choose ir led?? mW/sr? forward current?
« Reply #1 on: April 14, 2016, 09:40:57 am »
By checking the datasheet. You'll usually find an Intensity vs. Forward Current graph there.

McBryce.
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Offline danadak

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Re: How to choose ir led?? mW/sr? forward current?
« Reply #2 on: April 14, 2016, 10:25:36 am »
When you go to those sites they have a table oriented product selector, and radient intensity
a column in the chart. Sortable, searchable......


http://www.digikey.com/product-search/en/optoelectronics/infrared-uv-visible-emitters/524328?k=led


Regards, Dana.
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Love Cypress PSOC, ATTiny, Bit Slice, OpAmps, Oscilloscopes, and Analog Gurus like Pease, Miller, Widlar, Dobkin, obsessed with being an engineer
 
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