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 RTP

The Weller RTP Pico soldering tip series comprises more than 35 standard micro tips without MIL-SPEC certification for RT Pico soldering irons. The range covers conical geometries from 0.1 mm (RTP 001 C NW, non-wettable) to 0.4 mm, conical bent types (RTP 001 Cx, RTP 002 Cx), chisel tips from 0.2x0.1 mm (RTP 002 S) to 1.3x0.3 mm (RTP 013 S), bevel types (RTP 004 B, RTP 012 B), knife forms (RTP 010 K, RTP 010 K NW non-wettable) and the solder depot RTP 020 G (2 mm). NW (non-wettable) variants are designed for handling 0201 micro components without unintended solder transfer.

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Buying guide

How to choose Soldering tips RTP

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

RTP standard series geometry overview

Type	Shape	Dimension	Note
RTP 001 C	Conical	0.1 mm	Standard
RTP 001 C NW	Conical, non-wettable	0.1 mm	NW, 0201 components
RTP 002 C / RTP 004 C	Conical	0.2 / 0.4 mm	Standard
RTP 001 Cx / RTP 002 Cx	Conical bent	0.1 / 0.2 mm	Hard-to-reach
RTP 002 S / RTP 004 S	Chisel	0.2x0.1 / 0.4x0.2 mm	Standard
RTP 002 S NW	Chisel, non-wettable	0.2x0.1 mm	NW
RTP 008 S / RTP 010 S / RTP 013 S	Chisel	0.8x0.3 / 1.0x0.3 / 1.3x0.3 mm	-
RTP 004 B / RTP 012 B	Bevel	0.4 / 1.2 mm	-
RTP 010 K / RTP 010 K NW	Knife	1.0 mm	NW variant
RTP 020 G	Solder depot	2.0 mm	Defined solder volume

RTP vs. RTP-MS: when to use which?

The standard RTP and RTP-MS series are geometrically identical. The standard series is suited for all applications without regulatory requirements: prototype development, small-batch production, laboratory, training and rework in non-regulated manufacturing. For processes to J-STD-001 Class 3, MIL-STD-2000 or medical device standards, the RTP-MS with material traceability is required. Both series are compatible with RT Pico soldering irons.

Typical applications

Typical applications: Rework and repair of micro components (01005, 0201, 0402, 0603) in development and small-batch production, laboratory work on fine-pitch ICs and MEMS sensors, prototype assembly, touch-up and rework on consumer electronics and instrumentation boards, and soldering training on Pico irons.

FAQ

Frequently asked questions about Soldering tips RTP

What are RTP Weller soldering tips and what industrial applications are they used for?

RTP Weller soldering tips are precision soldering tools designed for RT Pico soldering stations, offering tip dimensions ranging from 0.1mm conical to 2.5mm knife configurations. These tips serve critical applications in electronics manufacturing, SMD component assembly, military-specification soldering operations, and ESD-sensitive environments. The RTP series includes specialized geometries such as conical, chisel, beveled, knife, and solder depot configurations to accommodate different joint types and component densities. Industries utilizing these tips include aerospace electronics, medical device manufacturing, telecommunications equipment production, and precision instrument assembly where consistent thermal transfer and dimensional accuracy are essential.

What are the key technical selection criteria for choosing the correct RTP Weller soldering tip?

RTP Weller soldering tip selection depends on component pad size, joint type, and thermal requirements, with tip dimensions ranging from 0.1mm diameter conical tips like the RTP 001 CxMS to 2.5mm knife tips such as the RTP 025 K MS. Chisel tips are specified by width and thickness measurements, with options including 0.2×0.1mm for ultra-fine work up to 1.3×0.3mm for larger joints. MIL-SPEC versions provide enhanced durability and consistent performance for military and aerospace applications. Non-wettable variants like the RTP 010 K NW MS prevent solder adhesion for specialized applications. Temperature compatibility and thermal mass considerations determine optimal heat transfer for specific component packages and PCB thermal characteristics.

What standards and certifications apply to RTP Weller soldering tips?

RTP Weller soldering tips comply with MIL-SPEC military standards for defense and aerospace applications, ensuring consistent metallurgy and dimensional tolerances under demanding operational conditions. ESD-safe compatibility meets IEC 61340 electrostatic discharge control standards, preventing component damage during soldering operations on sensitive electronic assemblies. The tips conform to RoHS directive compliance for lead-free soldering processes and REACH regulation requirements for chemical substance safety. ISO 9001 quality management standards govern manufacturing processes, while individual tip geometries maintain dimensional tolerances within ±0.025mm for precision applications. Temperature cycling performance meets industrial soldering station requirements up to 450°C operational temperatures.

What are the differences between the main RTP Weller soldering tip variants?

RTP Weller soldering tips differ primarily in geometry, size, and surface treatment specifications, with conical tips like the 0.4mm RT Pico providing pinpoint accuracy for through-hole components while chisel variants such as the RTP 013 S MS offer 1.3×0.3mm contact surfaces for drag soldering operations. Beveled tips including the RTP 012 B MS with 1.2mm angles excel at component removal and rework applications. Knife configurations like the RTP 025 K MS deliver 2.5mm cutting edges for wire stripping and thermal cutting tasks. Non-wettable versions feature specialized coatings preventing solder adhesion, while MIL-SPEC variants incorporate enhanced metallurgy for extended service life under high-temperature cycling conditions.

What are the installation requirements and system compatibility for RTP Weller soldering tips?

RTP Weller soldering tips require RT Pico compatible soldering stations with matching heating element interfaces and temperature control systems capable of maintaining ±5°C thermal stability. Installation involves inserting the tip into the heating element collar with proper seating depth to ensure optimal thermal coupling and mechanical retention. The tips utilize proprietary Weller connection technology with spring-loaded contacts for reliable electrical and thermal interfaces. Station compatibility requires 24V heating elements with electronic temperature regulation and ESD-safe grounding through the tip connection. Proper installation includes verification of tip recognition by the station's sensor system and calibration confirmation at operating temperatures between 200°C and 450°C.

What safety ratings and operating parameters apply to RTP Weller soldering tips?

RTP Weller soldering tips operate safely within temperature ranges of 200°C to 450°C with thermal shock resistance tested to 100,000 heating cycles without metallurgical degradation. ESD protection maintains surface resistivity below 10^12 ohms per IEC 61340-5-1 standards, preventing electrostatic discharge damage to sensitive components during soldering operations. The tips feature lead-free plating systems compatible with RoHS compliance requirements and halogen-free flux compatibility. Thermal conductivity specifications ensure consistent heat transfer across the working surface while maintaining operator safety through insulated heating element integration. Maximum continuous operating time reaches 8 hours at 400°C without performance degradation, with emergency shutdown capability integrated into compatible RT Pico stations.

What maintenance schedule and service life expectations apply to RTP Weller soldering tips?

RTP Weller soldering tips typically achieve 200-500 hours of active soldering time depending on operating temperature, flux chemistry, and cleaning frequency, with MIL-SPEC variants extending service life up to 40% through enhanced metallurgy. Daily maintenance requires tip cleaning with damp cellulose sponges and periodic tinning with 63/37 or SAC305 lead-free solder to maintain optimal wetting characteristics. Weekly inspection involves checking for oxidation, mechanical wear, and dimensional changes exceeding ±0.05mm from original specifications. Replacement indicators include reduced heat transfer efficiency, solder wetting degradation, or visible tip erosion affecting joint quality. Proper storage in protective containers with corrosion inhibitors extends unused tip shelf life beyond 24 months under controlled environmental conditions.