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Weller SP40NUS Medium Duty LED Soldering Iron , Red/Black

4.4 4.4 out of 5 stars 823 ratings

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SP40NUS

Purchase options and add-ons

Brand Weller
Power Source Corded Electric
Wattage 40 watts
Included Components 1 Weller Branded Product
Style SP40NUS

About this item

  • Medium duty consumer soldering iron with the latest LED technology
  • 3 LEDs for superior accuracy and application illumination
  • Triangular handle for tip positioning and precise control
  • Co-molded and ribbed grip for maximum comfort and reduced slippage
  • Easy tip change with a variety of options
See more product details

Customer ratings by feature

Comfort
4.5 4.5
Value for money
4.1 4.1
Temperature Control
4.0 4.0

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Weller SP40NUS Medium Duty LED Soldering Iron , Red/Black
Weller SP40NUS Medium Duty LED Soldering Iron , Red/Black
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Price$28.54$40.90-20% $18.49
List:$22.99
$24.85-15% $28.99
List:$33.99
$25.24
Delivery
Get it as soon as Monday, Mar 25
Get it Mar 25 - 27
Get it as soon as Monday, Mar 25
Get it as soon as Monday, Mar 25
Get it as soon as Monday, Mar 25
Get it as soon as Monday, Mar 25
Customer Ratings
Value for money
4.1
3.0
3.5
3.5
3.5
Temperature Control
4.0
3.5
3.0
3.4
3.2
Easy to use
4.0
3.7
4.0
Sold By
EstBuy Trading
MaxWarehouse
Amazon.com
Amazon.com
Amazon.com
Amazon.com
power source
Corded Electric
AC
AC
AC
AC
heating element type
Ceramic
Ceramic
Ceramic
Ceramic
Ceramic
Ceramic
head style
easy tip
Chisel
Chisel
Chisel
chisel,flat
Chisel
style
SP40NUS
Pencil
Pencil
Pencil
Pencil
Pencil
model number
SP40NUS
WE-SP40NUS
WLIR3012A
WLIR6012A
WLIRK6012A
WLIRK3012A
weight
5.6 ounces
0.72 pounds
0.35 pounds
0.37 pounds

Product information

Technical Details

Additional Information

Warranty & Support

Amazon.com Return Policy:Amazon.com Voluntary 30-Day Return Guarantee: You can return many items you have purchased within 30 days following delivery of the item to you. Our Voluntary 30-Day Return Guarantee does not affect your legal right of withdrawal in any way. You can find out more about the exceptions and conditions here.
Product Warranty: For warranty information about this product, please click here

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Weller SP40NUS Medium Duty LED Soldering Iron , Red/Black


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Product Description

Brings the light! High performance consumer soldering iron with the latest LED technology. Delivers light to the application while working.

Important information

Wattage

40 watts

Bulb Voltage

120 volts

Customer reviews

4.4 out of 5 stars
4.4 out of 5
823 global ratings

Customers say

Customers like the quality and brightness of the soldering iron. For example, they say it's the best solder iron they've used and the LED lighting is a great addition. Customers are also impresseded with the value, versatility, and appearance. That said, some complain about the tip size. Opinions are mixed on performance and temperature control.

AI-generated from the text of customer reviews

64 customers mention48 positive16 negative

Customers like the quality of the soldering iron. They mention that it's the best they have used, and that it serves their needs perfectly. Some say that it is well made and serves their purposes well.

"...The tip even came pre tinned. Awesome. Shortest and best soldering job I have ever done with the least amount of reindeer games." Read more

"This is a great Weller product that performs well in the field for my work as a commercial audio technician...." Read more

"...I originally left a 3 star review because the tip was disintegrating but did some research on it and found out it can happen if you don't clean it..." Read more

"...this is a brand that has a long history in making such a product of high quality" Read more

26 customers mention22 positive4 negative

Customers like the brightness of the soldering iron. They say the LED lighting is very welcome, helps light up what they're solderding, and is a great addition. Some say that the light could be adjusted a bit. Overall, customers are satisfied with the brightness and functionality of the product.

"...Could maybe use a temp control. The LED lighting is very welcome. The tip even came pre tinned. Awesome...." Read more

"...40 watts is ideal for smaller stranded wire. The LED's are a plus. Highly recommend." Read more

"...The LED lighting are very bright & easy on the eyes, and in that regard I agree with the rest of the reviewers about how you don't think you need it..." Read more

"...Also the lights on it help remind you and others it’s on & it’s hot." Read more

20 customers mention20 positive0 negative

Customers are satisfied with the value of the soldering iron. They mention that it gets a bit hot, but is decent for the price they paid. Some say that it's a great budget iron and provides good quality for the money.

"This is a great soldering iron for a great price! My use of the Weller SP40NUS is mostly for Arduino and Raspberry Pi type small electronics...." Read more

"Works well, great for price. I love that it’s a reputable company and not some foreign copy crap...." Read more

"For the price these things are absolutely unstoppable. Super inexpensive, very well thought out design with the built-in LEDs and specially designed..." Read more

"Very impressed. It does work like a Weller, even though the price is very reasonable. The lights are actually a very pleasant addition...." Read more

15 customers mention15 positive0 negative

Customers find the soldering iron very useful for small jobs, great tool, and incredibly useful. They also say it's perfect for simple solder needs, perfect for home use, and perfect for every solder job.

"...It heats up HOT and makes short work out of a project...." Read more

"Overall good product. The LED’s are very helpful in illuminating the work project...." Read more

"...Very powerful tool, all praises really...." Read more

"...Perfect for everything except tiny PCB repairs." Read more

8 customers mention6 positive2 negative

Customers like the appearance of the soldering iron. They say it has a well thought out design, with built-in LEDs and a special handle that keeps the tip off. Some customers also appreciate the robust design.

"...Super inexpensive, very well thought out design with the built-in LEDs and specially designed handle that keeps the iron tip off the surface, and..." Read more

"This iron is good for esthetic purposes. But, if you need to actually solder, get a better quality iron...." Read more

"...The pictures might be a bit misleading. I managed to get the job done with the screwdriver tip but I sure wish it was a pointed tip." Read more

"Worked well for my speaker repairs. Love the LEDs. The stand is kind of goofy but good enough for temporary use." Read more

74 customers mention44 positive30 negative

Customers are mixed about the performance of the soldering iron. Some mention that it works like a weller, it works great for all their hobby needs, and it performs well in the field. However, others say that the tip starts to disintegrate and develops an oxide coating that prevents solder.

"...Works great. And if you take notes you can write down what variac setting is best for what you're doing and more easily dial it in the next time...." Read more

"Otherwise unremarkable. Can't recommend." Read more

"This is a great Weller product that performs well in the field for my work as a commercial audio technician...." Read more

"This really works well. Bought some smaller spare tips. Comes with a large tip not very useful. Like the leds but could be brighter." Read more

62 customers mention33 positive29 negative

Customers are mixed about the temperature control of the soldering iron. Some mention that the amount of heat is right on point to dissolve the solders wire and stick to the wires, it heats up quick and good, and the 40 watts keeps the tip hot enough it doesn't lose heat while using it. However, others say that the tip is quite big and it gets way too hot, the iron takes much longer to heat up than the earlier years Weller pencils, and that the heating element is not supported well.

"I got this to put holes in plastic plant pots. It heats up quickly and just needs to be plugged in because there is no buttons...." Read more

"...Since there is no read out on temperature I just use some scrap 3d printed material to dial-in what heat is best for the brass inserts and then..." Read more

"...soldering iron because the tips are replaceable and I see no loss in heat or lighting. Awesome job Weller!" Read more

"...That being said, it is very hot and you should probably have your project set up for soldering action without a bunch of shenanigans because I would..." Read more

20 customers mention4 positive16 negative

Customers are dissatisfied with the tip size of the soldering iron. They mention that it's too big for electrical solder, the tip is wider than expected, and the quality of the tip provided is poor. Some say that the diameter is too big to fit in their solder station and the tip has a very blunt tip.

"...Would have given 5 stars but the triangular shape does not fit my Weller soldering station very well although it’s passable." Read more

"...After this time it is virtually unusable because of the poor quality tip that is fitted...." Read more

"...right or what but I've soldered about 15 wires together and the tip is very eaten up...." Read more

"...designed handle that keeps the iron tip off the surface, and nice large chisel tip so it does a great job at keeping consistent temperature...." Read more

CLEAN YOUR TIPS GUYS!!!!
5 Stars
CLEAN YOUR TIPS GUYS!!!!
FYI : Regular solder has acid in it that will eat away at your tips. Make sure to clean your tips during and after usage. I originally left a 3 star review because the tip was disintegrating but did some research on it and found out it can happen if you don't clean it like you should.Hands down great soldering iron. I will purchase new tips through Weller soon.
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Top reviews from the United States

Reviewed in the United States on February 13, 2024
Style: SP40NUSVerified Purchase
Reviewed in the United States on June 20, 2022
Style: SP40NUSVerified Purchase
3 people found this helpful
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Reviewed in the United States on January 24, 2023
Style: SP40NUSVerified Purchase
One person found this helpful
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Reviewed in the United States on August 17, 2022
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One person found this helpful
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Reviewed in the United States on July 30, 2023
Style: SP40NUSVerified Purchase
Reviewed in the United States on July 25, 2023
Style: SP40NUSVerified Purchase
Customer image
5.0 out of 5 stars CLEAN YOUR TIPS GUYS!!!!
Reviewed in the United States on July 25, 2023
FYI : Regular solder has acid in it that will eat away at your tips. Make sure to clean your tips during and after usage. I originally left a 3 star review because the tip was disintegrating but did some research on it and found out it can happen if you don't clean it like you should.

Hands down great soldering iron. I will purchase new tips through Weller soon.
Images in this review
Customer image
Customer image
One person found this helpful
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Reviewed in the United States on July 31, 2023
Style: SP40NUSVerified Purchase
One person found this helpful
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Reviewed in the United States on June 15, 2023
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One person found this helpful
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Top reviews from other countries

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Petra
5.0 out of 5 stars It works!
Reviewed in Canada on November 28, 2023
Style: SP40NUSVerified Purchase
CharlyDelta
5.0 out of 5 stars Good quality
Reviewed in Canada on June 25, 2023
Style: SP40NUSVerified Purchase
Hector Dorantes Hdz
5.0 out of 5 stars Muy útil.
Reviewed in Mexico on July 10, 2021
Style: SP40NUSVerified Purchase
One person found this helpful
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Larry
5.0 out of 5 stars As advertised
Reviewed in Canada on July 12, 2023
Style: SP40NUSVerified Purchase
V.D.
5.0 out of 5 stars Good value
Reviewed in Canada on March 2, 2023
Style: SP40NUSVerified Purchase