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How to De-Solder Through-Hole Components with Quality on Printed Circuit Boards (PCB's)
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Thru-Hole De-Soldering Without Lifting Pads & Traces!
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Here’s how simple successful Thru-Hole De-soldering truly is:
The Solution? Preheating! If a PCB Assembly can be made under
260°C in initial production, it can also be unmade and remade at similar temps!
If it's important to preheat new PCB's, it's more so with
older PCB's. |
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Regardless of copper
content, number of layers & heavy ground planes
or component density, all you need is a
PCB fixture, an
AirBath
preheating unit, a dependable (non-clogging)
desoldering
tool
& a few other choice items and removing thru-hole
IC's, resistors, diodes, capacitors, connectors is easy. |
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 STEP 1:
Secure your PCB
into an
ABC-1 Board Cradle and above the
AirBath Preheater (not
yet powered) as shown. Dip your brush into flux. (We recommend:
No Clean Flux and
Thru-Hole PCB Scrub Brushes). |
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 STEP 4b:
Heat the
pin. Place the de-soldering tip’s orifice
onto the joint’s stud. As solder melts, begin a rotating motion with tip.
When you sense the lead moving freely the solder is
molten inside the hole. |
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 STEP 2a: Apply flux to each
of the targeted solder joint's lead and land/pad interface that corresponds to the Thru-Hole device on the opposite side of PCB. |
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 STEP 4c:
Activate Vacuum upon sensing the lead is
loose in the hole. Now lower tip to the pad & begin vacuum.
Continue rotation to prevent “sweating” inside plated holes. Don't
use pressure. |
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 STEP 2b:
Begin Preheating! Next, begin the pre-heating process by flipping the rocker switch found on the
AirBath to "Warm".
(Typical preheating is done at 150°C).
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STEP 4d:
After solder extraction, lift tip off the
pad, but continue vacuum 3-4 extra seconds so solder travels
to reservoir to prevent clogging or accidental solder spillage. Proceed to next joint. Turn
power off. |
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 OPTIONAL 3a:
Apply
LowMelt®.
Note:
AirBath
preheat power permits you to skip to Step 4, but
if you have heavy ground planes, high copper content or
really difficult PCB’s, consider the
LowMelt®
option. |
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 STEP 5a:
Cool down & final cleaning. Flip rocker switch of
AirBath to “Cool” mode. This will cool down the PCB. Next, dip a
brush into
non-flammable flux remover.
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 OPTIONAL 3b:
Melt
LowMelt®. directly onto existing joints as needed. Co-metalization has begun! Because no two PCB’s are alike, some joints will require more
LowMelt® (Only use certified Zephyrtronics alloy). |
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STEP 5b:
Clean PCB by brushing with
non-flammable flux remover as PCB cools under the
ZT-1 AirBath, (Clean as shown. Inspect. Turn off
ZT-1 AirBath. Flip PCB over and carefully extract chip or connector. |
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STEP
4a:
Now
DeSolder!
Use a
temp controlled de-soldering
station with temp set at less than 300°C, lower the
de-soldering tip onto
the solder joint stud, but do not lower tip completely to
the pad yet. |
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©1996 - 2011, 2012,
2013, 2014-2016, 2017, 2018-2024
by Zephyrtronics®. All rights reserved. The
information, text, images, photographs, charts, graphs you
receive online from Zephyrtronics® are protected
by the copyright laws of the United States. The copyright laws
prohibit any copying, redistributing, retransmitting, or
repurposing of any copyright-protected material. Zephyrtronics
is the registered trademark property of JTI, Inc. "The Science
of Zephyrtronics" and "Simplicity Through Innovation" and
"Zephlux" and "ZeroLead" and "Zero Balling" and "Zero Residue"
and "Post Cooling" and "Post Cooler" and "AirBath" and
"SolderGlide" and "SolderMill"
and "Just So Superior" are the protected trademark
property of JTI, Inc. "Zephyrtronics" and "Low Melt" and "Air
Fountain" and "Fountainhead" are the registered trademark
properties of JTI Inc. *The above names are the registered
property of their respective owners. |
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SMD
Rework,
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AirBath Air Bath,
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How
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How To - BGA Alignment;
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How To - BGA & CSP Rework;
How To - Quickly Solder
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How To - CSP Alignment;
How To - Lead-Free Rework;
How To - SMD Removal
Economical;
How To - SMD Removal
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How To - SMD Quick Chip
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How To - BGA Re-Balling;
How To - Rework PLCC, QFP,
QFN, LCC, SOIC, SOL, Shielded SMD, TSOP;
How To - Solder & Rework
Ceramic Capacitors;
How To - Solder & Rework
Glass Diodes;
How to Repair Smartphones,
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Soldering,
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How To - Connector Rework;
How To - PC/104 Soldering
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How To - Thru-Hole /
Through Hole Desolder / De-Solder;
How To - Low Melt®
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How To- Stop Lifting Pads;
How To- Desolder /
De-Solder Heavy Ground Planes;
How To - Lead-Free
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Pre-Heaters for Lead-Free Rework and Soldering
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Straightening Tool for
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ESD Wrist Straps,
ESD Wrist Strap Tester
Updated
for June 5, 2024 |
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