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PICList Thread
'What are DNPs?'
2000\02\28@091045 by Dan

Does anyone know what DNP connectors/components are?

We have been trying to hammer out a design following the
one stated on Rick Farmer's page at
but are a bit unclear as to exactly how he has touted the
TxRx to the PIC16F873

Thanks for help

University of Exeter

2000\02\28@105157 by Tim Hamel

picon face

Well...I looked at two schematics of the EVB at his site. On one schematic,
he has "R4 DNP," but on the other schematic, it isn't even there! Also, in
the BOM (Bill of Materials), R4 doesn't exist, only R1 and R2. I'd use this


Tim Hamel

In a message dated 2/28/00 6:10:58 AM Pacific Standard Time,
spam_OUTD.J.BurgessTakeThisOuTspamEXETER.AC.UK writes:

{Quote hidden}

2000\02\28@110230 by Michael Rigby-Jones

part 0 1441 bytes
<P><FONT SIZE=2 FACE="Arial">Does anyone know what DNP connectors/components are?</FONT>

<P><FONT SIZE=2 FACE="Arial">We have been trying to hammer out a design following the</FONT>
<BR><FONT SIZE=2 FACE="Arial">one stated on Rick Farmer's page at</FONT>
<BR><FONT SIZE=2 FACE="Arial">but are a bit unclear as to exactly how he has touted the</FONT>
<BR><FONT SIZE=2 FACE="Arial">TxRx to the PIC16F873</FONT>

<P><FONT SIZE=2 FACE="Arial">Thanks for help</FONT>

<P><FONT SIZE=2 FACE="Arial">----------------------</FONT>
<BR><FONT SIZE=2 FACE="Arial">Dan</FONT>
<BR><FONT SIZE=2 FACE="Arial">University of Exeter</FONT>
<P><FONT COLOR="#0000FF" SIZE=2 FACE="Arial">It looks to me like he is specifying standard 0.1&quot; PCB headers such as the common Molex range.</FONT>

<P><FONT COLOR="#0000FF" SIZE=2 FACE="Arial">Hope that helps.</FONT>

<P><FONT COLOR="#0000FF" SIZE=2 FACE="Arial">Mike</FONT>


2000\02\28@111820 by Amos, Jim

DNP implies that a particular part is a "Do Not Populate".

This allows a component to be placed on the schematic, and into the layout.
But does not show up on the bill of material.

Jim Amos

{Original Message removed}

2000\02\28@114943 by mike

On Mon, 28 Feb 2000 14:10:16 -0500, you wrote:

>Does anyone know what DNP connectors/components are?
Stands for 'Dry Non-Polish', when applied to fibre-optic connectors.
Basically means you don't need glue to assemble them, and don't need
to polish the fibre end afterwards.

2000\02\28@120408 by Dave VanHorn

Hash: SHA1

At 04:50 PM 2/28/2000 +0000, Mike Harrison wrote:
>On Mon, 28 Feb 2000 14:10:16 -0500, you wrote:
> >Does anyone know what DNP connectors/components are?

Do Not Purchase :)

(AKA Do Not Populate)
Version: PGP for Personal Privacy 5.5.2


2000\02\28@122902 by Wagner Lipnharski

picon face
Sometimes you design a PCB that has references to future features or
implementations, but you don't want those parts to be purchased or even
listed at your unit "basic" model, so you use the DNP to those parts.
In some working normal VCR's you can see several missing components on
the board, even that the board has all the silkscreen and PCB
connections for those components, so you ask; "What in the heck they
waste PCB realestate if they don't use it?", but of course, that part of
the PCB is used for a different VCR configuration, country, etc.  The
same VCR board is used in several different VCR models, and in some
models there are some features, so that empty part of the PCB is
populated. In this diagrams, those components doesn't carry the DNP

Dave VanHorn wrote:
{Quote hidden}

2000\02\28@175911 by John Mullan

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