Weller 40-Watt LED Soldering Iron Kit-SP40NKUS at 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  Color Family  Red 
Hand Tool Type  Other  Manufacturer Warranty  7 year 
Power Tool Product Type  Soldering Irons & Accessories  Primary Use  Soldering 
Product Depth (in.)  12.37  Product Height (in.)  1.76 
Product Weight (lb.)  0.432 lb  Product Width (in.)  4.87 
Returnable  90-Day  Soldering Iron & Accessory Product Type  Soldering Irons 


Rated 3.3 out of 5 by 18 reviewers.
Rated 5 out of 5 by it's a hot Iron Three different tips, led lights, works on 10 gauge wire October 21, 2014
Rated 5 out of 5 by This product has great quality The soldering iron has been around for ever, in all these years there hasn't been many if any improvement to it. A Weller engineer found a way, by adding a 40-Watt LED light to the soldering iron. The work area is easier to see to get the job done right the first time. May 8, 2014
Rated 1 out of 5 by Wouldn't solder speaker wire Wanted to solder light gauge wire for a low voltage lighting system but it wouldn't get the wire hot enough to make the bond. I tried flux, tinning you name it. I'll be returning this one. July 1, 2014
Rated 5 out of 5 by Great product! I am a professional heavy equipment mechanic specializing in electrical troubleshooting and this is the best soldering iron I have ever owned. I have spent over $100 on other brands and none have come close to this. The tips are good quality and easily interchangable. Gets to usable temperature quickly. Recommend using bernzomatic solder though, the solder that comes with the iron makes a mess of the tip. Would buy another Weller in a heartbeat. January 21, 2014
Rated 1 out of 5 by Short heater life First unit lasted about a month then the heater went out (open circuit). Bought second unit. Unfortunately did not even last one week. Will buy again? Probably because they are cheap and has warranty but I don't like the hassle of returning bad items. Bad for customer, the store and the manufacturer. August 23, 2013
2 3 >>


Cost Saver Shipping includes initial transportation by small parcel service, with final delivery made by U.S. Postal Service. Tracking information may be limited.

Orders for this item may be expedited for an additional fee.

Other Delivery Options:

Standard Shipping includes delivery by small parcel service. Processing time varies by product.

Express and Expedited shipping options are also available. Estimated arrival times are available in checkout.

If product is eligible for shipping to AK, HI and US Territories additional transit time and remote surcharges may apply.