n.qth.net
> [mailto:elecraft-boun...@mailman.qth.net] On Behalf Of Mark Goldberg
> Sent: Sunday, March 25, 2018 6:20 PM
> To: Elecraft Mailing List
> Subject: Re: [Elecraft] Resistor and capacitor installation techniques:
> trim
> before or after soldering?
>
> For commercial products, ther
capacitor installation techniques: trim
before or after soldering?
For commercial products, there is IPC-610. That is 400+ pages of
descriptions of how to determine acceptability of and build electronic
assemblies. It has very clear explanations and lots of pictures and diagrams
of right and
For commercial products, there is IPC-610. That is 400+ pages of
descriptions of how to determine acceptability of and build electronic
assemblies. It has very clear explanations and lots of pictures and
diagrams of right and wrong ways to do things.
Unfortunately, you may have to pay to get a co
I only use "non-GMO enhanced" solder that is free-ranged.
Also, only natural lead & pure tin mined by hand without polluting equipment is
used with rosin (flux) from contented pine trees that have at least one wild
endangered species bird nest in it.
73, Charlie k3ICH
__
Sent: Sunday, March 25, 2018 4:35 PM
To: Bill Johnson
Cc: elecraft@mailman.qth.net
Subject: Re: [Elecraft] Resistor and capacitor installation techniques: trim
before or after soldering?
I do also carefully reflow.. Don't what any popping loose. Usually with a
finger on the part. Wrist
25, 2018 4:08 PM
To: hawley, charles j jr
Cc: elecraft@mailman.qth.net; JEROME SODUS
Subject: Re: [Elecraft] Resistor and capacitor installation techniques: trim
before or after soldering?
And trimming before soldering allows the exposed copper “end” of the lead to be
coated with solder thus elimi
ROME SODUS
Subject: Re: [Elecraft] Resistor and capacitor installation techniques: trim
before or after soldering?
And trimming before soldering allows the exposed copper “end” of the lead to be
coated with solder thus eliminating corrosion to the bare copper.
Sent from my iPhone
...nr4c.
> So, tin the wires if needed; position the part and then trim wires before
> doing the final soldering.
>
> 73 Jerry KM3K
>
>
>
> Message: 15
> Date: Sat, 24 Mar 2018 19:39:47 +0000
> From: Bill Johnson
> To: "ksto...@ac0h.net" , 'Mark Petrovic
iscussion!
'73 de JIM N2ZZ
-Original Message-
From: N2TK, Tony [mailto:tony@verizon.net]
Sent: Sunday, March 25, 2018 12:58 PM
To: 'Doug Renwick'; 'James F. Boehner MD'; 'JEROME SODUS';
Elecraft@mailman.qth.net
Subject: RE: [Elecraft] Resistor and capacitor in
I've soldered a LOT of components to circuit boards and I've always cut
the leads prior to soldering.
I insert the component and flip the board over to see which direction
the runs go from the lead. I bend the lead in the direction of the run,
which serves the purpose of holding the compone
great discussion!
'73 de JIM N2ZZ
-Original Message-
From: N2TK, Tony [mailto:tony@verizon.net]
Sent: Sunday, March 25, 2018 12:58 PM
To: 'Doug Renwick'; 'James F. Boehner MD'; 'JEROME SODUS';
Elecraft@mailman.qth.net
Subject: RE: [Elecraft] Resistor and
an.qth.net
Subject: Re: [Elecraft] Resistor and capacitor installation techniques: trim
before or after soldering?
About Message#15 copied below
Sorry but cutting wires after soldering is "bad practice"; NASA wanted the
soldered connection left undisturbed.
If I ever saw an assemble
: Sunday, March 25, 2018 12:05 PM
To: 'James F. Boehner MD' ; 'JEROME SODUS'
; Elecraft@mailman.qth.net
Subject: Re: [Elecraft] Resistor and capacitor installation techniques: trim
before or after soldering?
Heathkit recommended the "bad practice" saying "solder th
: elecraft-boun...@mailman.qth.net
[mailto:elecraft-boun...@mailman.qth.net] On Behalf Of JEROME SODUS
Sent: Saturday, March 24, 2018 11:40 PM
To: elecraft@mailman.qth.net
Subject: Re: [Elecraft] Resistor and capacitor installation techniques: trim
before or after soldering?
About Message#
I guess if you're building something that goes into a spacecraft or is life
support equipment, you want to do everything you can to make the product as
reliable as possible. In most cases, ham gear, especially hand assembled ham
gear, doesn't fall into that category.
Mass produced through-hole
I agree, the stated NASA "method" does amaze me.
First, the K2 is not likely to go a space journey.
Components with pre-cut leads may require 3 hands. One to hold the
component, one to hold the soldering iron and another to hold the solder.
I would assume that NASA directive was for wave-solder
ldering.
73 Jerry KM3K
Message: 15
Date: Sat, 24 Mar 2018 19:39:47 +
From: Bill Johnson
To: "ksto...@ac0h.net" , 'Mark Petrovic'
, "Elecraft@mailman.qth.net"
Subject: Re: [Elecraft] Resistor and capacitor installation
techniques: trim before or after solderin
5
Date: Sat, 24 Mar 2018 19:39:47 +
From: Bill Johnson
To: "ksto...@ac0h.net" , 'Mark Petrovic'
, "Elecraft@mailman.qth.net"
Subject: Re: [Elecraft] Resistor and capacitor installation
techniques: trim before or after soldering?
Message-ID:
Content-Type: text/p
quot;ksto...@ac0h.net" , 'Mark Petrovic'
, "Elecraft@mailman.qth.net"
Subject: Re: [Elecraft] Resistor and capacitor installation
techniques: trim before or after soldering?
Message-ID:
Content-Type: text/plain; charset="us-ascii"
Follow the instructions and solder
Actually one of the important points in soldering with thru-hole
components with plated hole boards is to watch the solder flow as you
solder. You should see the solder wick down into the hole which
minimizes the chances that the lead trimming process will cause a 'shock
wave' that will fractu
When I went to “mil spec soldering school” at Sanders Associates in Nashua
NH back in the 80’s we were taught to install the component and
mechanically secure it BEFORE soldering. This included clipping the leads
of resistors, capacitors, and so forth.
Why?
When you clip a component lead it creates
Mark,
It is usual for most components to mount on the top side of the board
and solder from the bottom. Splay the leads slightly to keep the
components from falling out when you turn the board over.
For components mounted on the bottom side of the board, I normally put
them in the same way,
qth.net
Subject: Re: [Elecraft] Resistor and capacitor installation techniques: trim
before or after soldering?
If I remember correctly they got soldered from the top side.
-Original Message-
From: elecraft-boun...@mailman.qth.net On
Behalf Of Mark Petrovic
Sent: Saturday, March 24, 2018 12
If I remember correctly they got soldered from the top side.
-Original Message-
From: elecraft-boun...@mailman.qth.net On
Behalf Of Mark Petrovic
Sent: Saturday, March 24, 2018 12:28 PM
To: Elecraft@mailman.qth.net
Subject: [Elecraft] Resistor and capacitor installation techniques: trim
While reading through my new K2 kit's control board assembly instructions,
I see that some builders prefer to trim the resistor and capacitor leads
before soldering. I'm intrigued by this, and wonder if someone who uses
this technique can share their experiences. Do you the solder the component
fr
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