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

Soldering tips MT

Weller MT soldering tips comprise four specialist tips for MT-compatible Weller soldering irons. MT-301 (chisel, 1.2x0.4 mm) and MT-302 (round, D: 0.4 mm) are classic fine-soldering tips for SMD work. MT-606 (pointed, D: 0.4 mm) and MT-605 (pointed and angled, D: 0.4 mm) are needle-type forms: MT-605 is bent at a fixed angle, enabling soldering in confined spaces without tilting the iron body. All four tips share the same 0.4 mm tip diameter and are designed for fine SMD and precision soldering tasks.

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Buying guide

How to choose Soldering tips MT

What matters when choosing: properties, comparison and typical applications.

MT tips at a glance

Model	Shape	Dimension
MT-301	Chisel	1.2 x 0.4 mm
MT-302	Round	D: 0.4 mm
MT-606	Pointed	D: 0.4 mm
MT-605	Pointed, angled	D: 0.4 mm

Application notes and selection guide

⚙ MT-301 (chisel 1.2x0.4 mm) - good heat transfer for SMD chisel work, higher solder volume than the round form

✓ MT-302 (round D 0.4 mm) - precise spot soldering with minimal lateral heat spread

⚡ MT-606 (pointed D 0.4 mm) - needle geometry for minimum contact footprint, fine electronics and IC-pin repairs

🛠 MT-605 (pointed, angled) - angled tip for joints under components without tilting the iron body

Typical applications

Typical applications: Fine SMD rework and solder-bridge removal on densely populated boards, spot soldering at IC pins and fine wire connections (MT-302, MT-606), soldering in confined assemblies without repositioning the iron (MT-605), and prototype building and laboratory fine work requiring precise heat delivery.

FAQ

Frequently asked questions about Soldering tips MT

What are Weller MT series soldering tips and what industrial applications do they serve?

Weller MT series soldering tips are precision soldering tools designed for professional electronics manufacturing and repair applications in industries including automotive electronics, aerospace components, telecommunications equipment, and medical device assembly. These tips feature optimized thermal transfer properties and high-temperature resistance materials that enable consistent solder joint quality in production environments. The MT series accommodates various soldering tasks from intricate circuit board work with 0.4mm diameter tips like the MT302 to broader applications using chisel-shaped profiles such as the MT301 with 1.2x0.4mm dimensions.

What are the key technical selection criteria for choosing the correct MT soldering tip geometry?

MT soldering tip selection depends primarily on component lead diameter, pad geometry, and thermal mass requirements of the target assembly. Round tips like the MT302 with 0.4mm diameter excel for point-to-point connections and small component leads, while chisel-shaped tips such as the MT301 at 1.2x0.4mm provide optimal heat transfer for larger pads and drag soldering techniques. Angled pointed tips like the MT605 enable access to restricted areas and angled component orientations where straight tips cannot achieve proper contact angles. The tip geometry directly affects heat transfer coefficient and determines maximum sustainable soldering speed in production applications.

Which international standards and certifications apply to Weller MT series soldering tips?

Weller MT series soldering tips comply with IPC-610 workmanship standards for electronic assemblies and meet RoHS directive requirements for lead-free soldering applications. The tips are manufactured according to ISO 9001 quality management standards ensuring consistent dimensional tolerances and thermal performance characteristics. For ESD-sensitive environments, the MT series integrates with Weller soldering stations that maintain compliance with IEC 61340-5-1 electrostatic discharge control standards. Temperature stability and thermal cycling performance align with J-STD-001 requirements for space and military electronics applications.

What are the functional differences between MT301, MT302, MT605, and MT606 soldering tip variants?

The MT301 features a chisel-shaped profile measuring 1.2x0.4mm optimized for drag soldering and larger pad coverage, while the MT302 provides a round configuration with 0.4mm diameter for precise point soldering applications. The MT605 incorporates an angled pointed geometry with 0.4mm tip diameter designed for accessing components in confined spaces and achieving non-perpendicular approach angles. The MT606 offers a straight pointed design with 0.4mm diameter for standard precision work where direct vertical access is available. Each variant maintains identical thermal characteristics but optimizes heat transfer geometry for specific assembly requirements.

What are the installation requirements and system compatibility specifications for MT series tips?

MT series soldering tips require Weller-compatible soldering stations with matching MT tip receptacle interfaces and operate within 24V low-voltage heating element systems. The tips feature rapid thermal recovery capabilities reaching operational temperatures within 30 seconds of installation and maintain temperature stability within ±5°C during continuous operation. Installation involves simple push-fit connection into the handpiece heating element assembly without requiring tools or calibration procedures. The MT series maintains full compatibility with Weller temperature-controlled stations featuring closed-loop feedback systems and digital temperature displays for process documentation requirements.

What are the operating temperature ranges and safety specifications for MT soldering tips?

Weller MT soldering tips operate across temperature ranges from 200°C to 480°C with sustained performance at maximum ratings without tip degradation or oxidation issues. The tips maintain thermal stability within ±3°C of setpoint temperature during continuous soldering operations and achieve thermal recovery times under 2 seconds after solder joint completion. Safety features include integrated thermal barriers preventing heat transfer to the handpiece grip area and compatibility with ESD-safe grounding systems meeting IEC 61340 standards. The tip construction withstands thermal cycling between ambient and maximum operating temperatures exceeding 10,000 cycles without geometric distortion or plating deterioration.

What maintenance schedules and service life expectations apply to MT series soldering tips?

MT series soldering tips require daily inspection for tip geometry integrity and plating condition with replacement recommended when tip diameter increases beyond 10% of original specification or plating shows visible oxidation patterns. Under normal production conditions with lead-free solder alloys, MT tips maintain optimal performance for 200-400 hours of active soldering time before requiring replacement. Maintenance procedures include tip cleaning with dampened cellulose sponges between solder joints and periodic tinning with fresh solder to prevent oxidation buildup. Service life extends significantly when tips operate below 400°C and undergo proper shutdown procedures including final tinning before station power-down cycles.