Desoldering pump or wick - which method should you use?
A desoldering pump and desoldering wick solve different problems: the pump sucks larger amounts of solder out of through-holes, while the wick draws thin residue away by capillary action. This guide shows which method fits which joint and how to desolder cleanly without lifting pads.
View desoldering toolsDesoldering pump or wick - what is the difference?
The desoldering pump is a spring-loaded suction plunger that vacuums molten solder in one snap. Desoldering wick is a flux-impregnated copper braid that absorbs liquid solder through capillary action. Both work only once the solder has been fully melted by the soldering tip.
The pump moves large amounts of solder in a single stroke and suits through-hole parts with filled holes. The wick works flat and precisely but only removes thin films of solder, such as residue on SMD pads or bridges between fine pins.
Temperature and tip shape decide desoldering success more than the removal tool.
Read the guideWhich method for which joint?
The choice depends on solder volume, package type and pitch. Through-hole (THT) parts with lots of solder need suction power, while surface-mount (SMD) parts and fine pitch need precision and low heat input.
- Match wick width to pitch: 1.5‑2 mm for THT, 0.5‑1 mm for SMD and ICs.
- Lead-free solder needs roughly 30‑40 °C more tip temperature than leaded.
- For many THT joints in a row, an electric desoldering station with a vacuum pump pays off.
- Keep heat on each pad to 2‑3 seconds max, or pads and plated holes may lift.
How do you desolder cleanly without lifting pads?
Clean desoldering is about heat, timing and flux. Add fresh solder or flux first, melt the solder completely, then suck it in one stroke or draw it off with the wick. Cold or stiff solder tears pads off the board.
- Keep the tip tinned and clean so heat transfers quickly.
- Add a little fresh solder or flux to old, oxidised joints to improve heat flow.
- With wick, press the tip onto the braid, not the pad, and lift the braid as soon as it saturates.
- Hold the pump vertical, tip almost touching, then trigger it.
- Cut off the used end of the wick, a saturated braid no longer absorbs.
Frequently asked questions
Is a desoldering pump or wick better?
Neither is better overall - they complement each other. The pump clears lots of solder from THT holes, the wick removes thin residue on SMD pads and fine pins. For clean results you use both.
What temperature should I desolder at?
Around 320‑350 °C for leaded solder and 350‑380 °C for lead-free. More important than the peak value is melting the solder fast and fully while keeping heat on each pad to 2‑3 seconds.
Why does my desoldering pump suck poorly?
Usually the plastic tip is clogged with solidified solder or the seal is worn. Strip it down, clean the tip and check the O-ring. The solder must also be fully liquid the moment you trigger.
Can I use desoldering wick without flux?
You can, but it works far worse. Pre-fluxed braid absorbs faster and cleaner. Without flux, add a drop of flux gel or fresh solder to the joint first.
Looking for the right desoldering tool?
We supply desoldering pumps, wick in several widths and electric desoldering stations - for clean THT and SMD repairs.
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Pump, wick and station for every repair case.
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Matching wick widths from SMD to THT.
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Our team advises on technique and choice.