Hakko T18-S3 Chisel Solder Tip, 5.20Mm
Hakko T18-S3 — Chisel Solder Tip, 5.20mm
The Hakko T18-S3 is a 5.20mm chisel solder tip for the Hakko FX-888D, FX-888, and legacy 900M/936/937 series soldering stations. The wide 5.20mm S-type chisel face provides maximum contact area for drag soldering dense lead arrays, large pad tinning, heavy wire terminations, connector pin soldering, and high-mass applications where a narrower tip loses temperature rapidly on contact. At 5.20mm it is the widest chisel in the standard T18 series, delivering aggressive heat transfer across a broad contact surface for production-oriented and high-mass bench work.
Key Specifications
| Specification | Value |
| Part Number / SKU | T18-S3 |
| Series | T18 |
| Tip Style | Chisel (S-type) |
| Tip Width | 5.20mm |
| Compatible Stations | FX-888D, FX-888, 936, 936-ESD, 937, 928, 913, 907, 907-ESD, 900M, 900M-ESD, 703 |
| Replaces | 900M series tips |
Compatible Stations
- Hakko FX-888D Soldering Station
- Hakko FX-888 Soldering Station
- Hakko 936 / 936-ESD Soldering Station
- Hakko 937 Soldering Station
- Hakko 928 Soldering Station
- Hakko 913 ESD Safe Fume Extraction Iron
- Hakko 907 / 907-ESD Soldering Iron
- Hakko 900M / 900M-ESD Soldering Iron
- Hakko 703 Soldering Station
- Replaces 900M series tips
Soldering Tip Care Guide
- Tin the full chisel face before and after every use — the wide 5.20mm face has more surface area exposed to oxidation; coat it fully with fresh solder at session start and end.
- Use brass wire tip cleaner — plunge the tip into brass wool (Hakko 599B-02) to remove flux residue without thermal shock. Avoid wet sponges where possible.
- Re-tin immediately after cleaning — never leave the wide face bare at temperature; oxidation begins within seconds across the exposed surface.
- Use tip tinner/activator on oxidized areas — if any portion of the face dewets, apply tip tinner promptly across the full face to restore the tinned surface.
- Keep temperature as low as practical — lower idle temperatures slow oxidation and extend tip life significantly.
- Replace tips showing cracks, pitting, or persistent dewetting — a damaged wide chisel tip delivers inconsistent heat and unreliable drag solder joints.
Frequently Asked Questions
How does the T18-S3 compare to the T18-K knife tip?
Both the T18-S3 (5.20mm chisel) and T18-K (5.00mm knife) are wide, high-mass tips suited for drag soldering and large pad work. The T18-S3 has a flat chisel face for broad contact across rows of leads and large pads. The T18-K has an angled knife blade profile that can also be used for wire stripping and forming in addition to drag soldering. For pure drag soldering and pad tinning, either tip works well; the knife profile offers more versatility for wire work.
What stations is the Hakko T18-S3 compatible with?
The T18-S3 is compatible with the Hakko FX-888D, FX-888, 936, 936-ESD, 937, 928, 913, 907, 907-ESD, 900M, 900M-ESD, and 703 soldering stations and irons. It is not compatible with the FX-951 (T15 series) or FX-971/FX-972 (T39 series).
How do T18 tips differ from T15 and T39 series tips?
T18 tips are designed for the FX-888D/FX-888 and legacy 900M/936 series stations. T15 tips are for the now-discontinued FX-951 station. T39 tips are for the current FX-971 and FX-972 stations. The three series are not interchangeable — always match the tip series to your specific station model.
