[Cerowrt-devel] semi off-topic: LEDs on WRT1200AC

Aaron Wood woody77 at gmail.com
Fri Mar 19 00:16:43 EDT 2021

As they're white LEDs, voltage (well, the current-limiting resistor used)
will probably matter (different color LEDs tend to take different
voltages/currents for the same brightness)

On Tue, Mar 16, 2021 at 8:06 PM Jonathan Morton <chromatix99 at gmail.com>

> > On 17 Mar, 2021, at 3:24 am, Valdis Klētnieks <valdis.kletnieks at vt.edu>
> wrote:
> >
> > Apparently, replacing them isn't *that* hard, but some of the
> > details are sketchy.  In particular, does anybody know what part number
> > is a suitable replacement?
> What you need to determine is the package form/size and the LED colour.
> Probably even the latter is not critical.  Then you can obtain replacements
> through any electronic component dealer.
> Through-hole LEDs will be described by their optical housing dimensions.
> Circular ones are typical, so measure the diameter.  Then check whether the
> top surface is hemispherical or flat.
> Small surface-mount indicator LEDs (not the larger ones used for lighting
> applications) will usually be described by a four-digit package code that
> is common to resistors etc, and simply describes their width and length.
> This shouldn't be too hard to determine.  You then only need to remember
> which way round to fit them.
>  - Jonathan Morton
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