Tech data on green LED parallax

Stein-ove

Anyone that nows the "If" current on·green·LED,·ITEM CODE 350-00001?
http://www.parallax.com/Store/Components/Optoelectronics/tabid/152/CategoryID/30/List/0/SortField/0/Level/a/ProductID/170/Default.aspx

LoopyByteloose

Tech data on generic [noparse][[/noparse]not the brights]·LEDs is generally a ball-park guess. The darned things aren't labled as to their mfg.

Different colors have differring If and some suppliers don't document these details as current limiting resistors usually decide the power consumption. Some can go 30ma continous, 75ma peak, but your miroprocessor is likely to fail if you drive those levels.

BasicStamps usually are limited to 20-25ma sink/source.· Do you want the threshold or peak If?· There is a numer for everything.· 1.5-2ma usually will turn on on, but maybe 1ma can work.· So you see 220 ohm, 330ohm, 390 ohm, and 470 ohm resistors with LEDs at 5volts.· I've only had trouble with 470ohm when the duty cycle is less than 100%.

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PLEASE CONSIDER the following:

Do you want a quickly operational black box solution or the knowledge included therein?······

···················· Tropically,····· G. Herzog [noparse][[/noparse]·黃鶴 ]·in Taiwan

Post Edited (Kramer) : 3/9/2008 12:21:42 PM GMT