Brian,
If you cannot locate the pin 1 designation on the silkscreen, then look
at the solder pads. In most cases, the solder pads are rectangular,
except for pin 1 which is usually round. There are some instances where
most of the solder pads are round, but in that case, pin 1 is
rectangular or square.
On the component, the dot may be any color - usually the same color as
the value marking. If you hold the R-Pak wih the pins down and the
value designation facing you, pin 1 is normally on the left. The color
of the dot can change from manufacturer to manufacturer, and even from
time to time with the same manufacturer. Yes, it was black when the
manual was written.
73,
Don W3FPR
On 6/21/2013 6:04 PM, Brian F. Wruble wrote:
I am building the RPC2. The instructions for installing resistor network
RP2 (47K) says to orient the network with pin 1 (black dot) toward Pin 1 of
the PCB outline.
I cannot find a black dot on the component nor any other indication of a
preferred end.
Anyone know what I am, missing? Is the component, in fact, symmetrical so
orientation doesn't matter?
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