How to DeSolder? Thru-Hole, Process, PTC, DeSoldering, Techniques
How to De-Solder Connectors & Thru-Hole


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How to De-Solder Through-Hole Components with Quality on Printed Circuit Boards (PCB's)
Thru-Hole De-Soldering Without Lifting Pads & Traces!

How to Desolder?

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.


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.


PCB Fixture.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).


How to Melt Solder for Removal.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.


How to Apply Flux?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.


How to Suck Up the Solder.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.


How to Preheat PCBSTEP 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).

  DeSoldering Techniques and Tips.

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.


What is DeSoldering?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.


How to Clean a PCB.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.


Remove Chip Quick With LowMeltOPTIONAL 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).


Scrubbing the PCB Clean.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.


Desolder Process

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.


How Excellent!

The ABC's
 for All Your
Thru-Hole Soldering

  PCB Fixture 4-Track
Must See the Video &
 The ABC Versatility!



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How to De-Solder Through-Hole

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Updated for June 25, 2019