Weller 40-Watt LED Soldering Iron Kit-SP40NKUS - The Home Depot


Model # SP40NKUS

Internet # 204195330

Store SKU # 1000011104

40-Watt LED Soldering Iron Kit

Weller 40-Watt LED Soldering Iron Kit

This item has been discontinued.
The Home Depot no longer carries this specific product.

$23.97 / each


Model # SP40NKUS

Internet # 204195330

Store SKU # 1000011104

The Weller SP40NKUS Medium Duty LED Soldering Iron Kit (40-Watt - USA). Another great product from the leading brand in professional-quality soldering equipment since 1945. In addition to its famous irons and soldering guns, Weller is also recognized as a leader in advanced electronic rework and repair equipment and irons for sophisticated industrial applications, as well as numerous products for DIYers and hobbyists. Now Weller offers you more innovation and quality with superior ergonomics and flexibility and the benefit of LED technology built right into the iron for ease of use, while still maintaining compatibility with existing Weller tips.

  • Application illumination three 5 mm high temperature long-life leds with tip focused beams at 25 lumens sq. ft. drives superior visibility for maximum soldering accuracy.
  • Soft-grip comfort handle co-molded soft grip ribbed handle design for maximum comfort and reduced slippage
  • Ease of tip position and tip control triangular area for maximum of tip control round handle for ease of tip rotation
  • Proven heater technology high-performance ceramic heater technology with heat up to 900-degree F
  • Package includes: iron with mt10, 6 mm tip, iron stand, user manual, soldering aid tool, lead-free solder, spare st3 (3.2 mm) and st7 (0.8 mm) tips
  • Applications: hobby models, small appliance, small engine repair, crafts, wire connection less than 8 AWG (0.13 in. dia.)
  • Important: use only weller tips


Assembled Depth (in.)  12.37 in  Assembled Height (in.)  1.76 in 
Assembled Width (in.)  0.432 in  Product Depth (in.)  12.37 
Product Height (in.)  1.76  Product Width (in.)  4.87 
Color Family  Red  Hand Tool Type  Other 
Power Tool Product Type  Soldering Irons & Accessories  Primary Use  Soldering 
Product Weight (lb.)  0.432 lb  Returnable  90-Day 
Soldering Iron & Accessory Product Type  Soldering Irons  Tools Product Type  Hand Tool 
Warranty / Certifications
Manufacturer Warranty  7 year 


Rated 3.3 out of 5 by 22 reviewers.
Rated 4.0 out of 5.0 by Weller 40-Watt Led Soldering Iron Kit Weller 40-Watt Led Soldering Kit: I thought that the price I paid was reasonable. The soldering kit did its job as was expected of it without giving me any problems. Of course, the job I was doing was soldering very thin wires and this soldering tool worked perfect for what I needed it. In addition to the soldering kit I also bought a Bernzomatic 4 ounce Lead Bearing Electrical 60/40 Rosin Core Leaded Solder to insure that my solder works perfectly. As it turned out, the job I did was very professional and I was very pleased with the purchase of this soldering gun kit to assist me in handling this task. My next task using this soldering kit will be to install a Datatool DiGi Digital Gear Indicator on my Yamaha FZ-6 motorcycle, just as soon as the days begin to get warm again. January 13, 2015
Rated 1.0 out of 5.0 by save your money, buy something else. used one time, heating element failed. Never again. January 27, 2015
Rated 2.0 out of 5.0 by Disappointed Great design, comfortable to handle and LED lights are great. Unfortunately it worked once then quit. A little better quality internally would make this a great product. January 3, 2015
Rated 5.0 out of 5.0 by Great purchase good price Works well on small circuitry. The interchangable tips are a definate plus! December 31, 2014
Rated 1.0 out of 5.0 by Don't waste your time and $$ Well. the 1st one lasted about 2 weeks, and quit working. So I exchanged it at HD. The 2nd one lasted about 3months, and now is very slow in heating up, and no longer gets up to max temperature. Ant he problem is they always fail in the middle of a project, so now you have to down tools and go shop for a new soldering iron. Just avoid the frustration and get a decent one - which I will now do . . . August 10, 2014
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