Did you know? 217 °C

SAC305 is 96.5 percent tin, 3 percent silver and 0.5 percent copper. It melts around 217 degrees Celsius, some 34 degrees above the old eutectic tin lead alloy.

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Soldering tips RTU-MS

Soldering tips

The Weller RTU-MS series ("RT Ultra") covers MIL-SPEC-qualified micro soldering tips for WXMP and WMRP irons, with particular strength in broad-spectrum geometries. The range extends from ultra-fine conical tips (RTU 003 C L MS, 0.3 mm) through chisel types from 1.5x0.4 mm to 9.3x2 mm, and on to blade-form tips from 10 mm (RTU 100 K MS) to 33 mm width (RTU 330 K MS). The "L" variants are extended length (e.g. RTU 032 S L MS chisel long 3.2x0.8 mm) for deep access positions. MIL-SPEC certification to J-STD-001 Class 3 is available for all types.

A distinguishing feature of the Ultra line is the large blade-form tips (RTU 160 K MS 16 mm; RTU 200 K MS 20 mm; RTU 330 K MS 33 mm) not found in the standard RTM-MS range. These blade geometries enable simultaneous soldering or desoldering of multiple closely-spaced pins on SOIC, PLCC or SOP packages.

⚙ Blade form, 10-33 mm - RTU 100 K MS (10 mm), RTU 160 K MS (16 mm), RTU 200 K MS (20 mm), RTU 330 K MS (33 mm)

⚙ Chisel, 1.5-9.3 mm - RTU 015 S MS to RTU 093 S MS, also long (L) and bent variants

⚙ Conical bent - RTU 004 CxMS (0.4 mm), RTU 003 C L MS (0.3 mm, long)

⚙ Bevel - RTU 020 B MS (2 mm), RTU 035 B MS (3.5 mm), RTU 050 B MS (5 mm), RTU 015 B L MS (1.5 mm, long)

✓ Solder depot - RTU 020 G MS (2 mm)

✓ MIL-SPEC for all types - J-STD-001 Class 3 qualified, full traceability

The RTU ("Ultra") series extends the RTM-MS with large blade geometries (10-33 mm) for simultaneous multi-pin soldering and with long tips (L) for deep access. RTU 050 S MS (5.0x1.2 mm) and RTU 076 S MS (7.6x1.5 mm) cover chisel widths not present in the RTM-MS range. Both series are compatible with WXMP and WMRP irons and carry MIL-SPEC certification.

Typical applications: Rework and desoldering of SOIC, SOP, PLCC and other multi-lead SMD packages using blade tips, soldering in regulated environments to MIL-STD-2000 and J-STD-001 Class 3, aerospace electronics, defence electronics, precision soldering in deep-access positions with long tips, and manufacturing processes requiring documented material traceability.