Asked by: H Swinyard
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Description
White 5mm Mega bright Water Clear LED with a viewing angle of 15 degrees. Luminous intensity 17500mCd.
| Forward voltage drop: | 3.2 V |
| Viewing angle: | 15 degrees |
| Max forward current: | 30 mA |
| Luminous intensity: | 15000 - 20000 mCd (@20mA) |
| Lens types: | Water clear |
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- If you spend over £200 (£240.00 including VAT, excluding large materials or lithium batteries) delivery is free within the UK.
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Further Information
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Q:
Can I use this LED without a current limiting resistor? -ie- connected direct to a 3V coin cell (CR1220)? We want to make a simple torch WITHOUT a resistor, so if this one is not suitable (as it's 3.2V) then please advise which of your white 5mm superbright LEDs would work directly from a 3.0V cell. Thank you!
A:
This one is suitable. Well, it will work attached directly to a 3V coincell. It's usually a good idea to use a current limit resistor but it isn't vital for what you are doing.
Answered by: Aaron Sturman
10-Jun-14
Q:
What coin battery would be best to use for two of the mega bright LEDs in a circuit?
Asked by: Hannah
A:
Hi Hannah, we do a CR1220, CR2012 and CR2032. The first two numbers are the diameter so 12mm or 20mm and the last two numbers are the height of the battery in tenths of millimeters so 2mm or 1.2mm or 3.2mm. All the batteries have the same voltage 3V so any would work but the bigger batteries hold more charge. CR2032 would light them for the longest. You should wire the LEDs in parallel.
Answered by: Aaron Sturman
11-Jun-13
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