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Old 11-26-2014, 07:21 AM #1
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Default What type this diode is?

Hello everybody, I need to know atleast model number, or max current it can eat. I don't believe the description on ebay. Ive found same description for more diodes. The datasheet would be good.

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Old 11-26-2014, 07:44 AM #2
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Default Re: What type this diode is?

Well, you probably already know it is a infrared diode, the voltage, current and output power specs seem normal to me.
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Old 11-26-2014, 07:58 AM #3
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Default Re: What type this diode is?

Try asking the seller. I don't think anyone here could tell you "exactly" what you're buying unless you have a datasheet.
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Old 11-26-2014, 10:59 AM #4
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Default Re: What type this diode is?

Quote:
Originally Posted by Description given by seller
Typical operation voltage is2.2V
Maximum operation voltage is2.7V
.
Typical wavelength is808nm
The wavelength ranges of these diodes are between800 and 820nm
.
Typical operation current is 1.2A
Maximum operation current depends of the diode, the interval value is 1.2A - 1.6A
This looks normal to me. Why do you not trust it?
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Old 11-26-2014, 03:42 PM #5
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Default Re: What type this diode is?

Ive found some other diodes with different power that have same specs as this one. Ive asked the seller for the info but he told me the same answer as the description.
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Old 11-28-2014, 04:54 AM #6
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Default Re: What type this diode is?

From what I've seen, 808nm diodes are about 35-40 percent efficient, i.e. at 2.2 volts and 1 amp that should be close to 900mw, maybe the efficiency can be higher for some.

Perhaps the range of voltage and current are as wide as they are because he is selling slightly different diodes, or they vary by that much from unit to unit. I have to admit, those are some very wide differences and that would explain why you see some diodes which are specified within those voltage and current ranges to have much different output levels.

I don't know why the seller has specified such wide possible voltage and current ranges, ask him, it isn't common for a 808nm diode to require 2.7 volts but like I said, he might have mixed devices or lots which behave differently (or didn't know what they were doing when testing them and didn't account for the voltage drop from the power leads, or... knows others don't). Still, I'd expect he isn't misrepresenting anything and that those are indeed the differences which can happen from diode to diode that he sells. However, the lower voltage and current numbers he stated are completely normal for a 40% efficient 808nm diode.
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Last edited by Alaskan; 11-28-2014 at 06:02 AM.
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Old 11-28-2014, 05:36 AM #7
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Default Re: What type this diode is?

Aren't 9mm size diodes inherently tougher and more powerful?
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