1 / 4Weller SI120 T0051807799 120 W Soldering Iron
T0051807799: The Weller SI120 is a corded, 120 W heavy-duty soldering iron intended for professional and light industrial work. Its listed bent, nickel-plated 12.5 mm tip and mains connection suit demanding tasks such as sheet-metal work, but the listing does not establish temperature control or a stand-alone temperature adjustment feature.
At a glance
- 120 W rating is specified for heavy-duty professional and light industrial work.
- Manufacturer information identifies sheet-metal work as a target for the iron's high power.
- Supplied with a 3-pin plug, according to the listing.
- A thermoplastic handle is described as designed for comfort and a secure grip.
Often bought together
Pros and cons
Pros
- High 120 W rating is suited to work with demanding heat requirements, including the listed example of sheet metal.
- The manufacturer identifies the bent, nickel-plated 12.5 mm tip, type 43110, as supplied with the iron.
- Corded mains operation avoids reliance on a battery.
Technical specifications
11 specifications| Brand | Weller |
|---|---|
| Model | T0051807799 |
| Power configuration | Corded Electric |
|---|---|
| Wattage | 120 watts |
| Input voltage | 230 Volts (AC) |
| Upper temperature rating | 500 Degrees Celsius |
| Heating element | Nichrome |
| Tip | Curved, nickel-plated soldering tip of 12.5 mm, type 43110 |
|---|---|
| Handle material | thermoplastic |
| Style | Pencil |
| Weight listed | 1.96 Pounds |
|---|
What to know before buying
- The listing gives an upper temperature rating of 500 Degrees Celsius but does not specify temperature adjustment or control. Treat this as a listed rating, not evidence of adjustable temperature.
Listing details to confirm
The listing gives 230 Volts (AC), while the title says 240 Volt. It also describes the tip as 12.5 mm, type 43110 in the product information but the item-type text formats this differently as 12, 5 mm Type 43110. Confirm the intended voltage and tip details for the selected listing before purchase. The listed item length of 1 Centimetres appears inconsistent with the product description, so it is not included as a useful dimension.
What’s in the box
Included- 1 soldering iron
Who is it for?
A good fit for
- Professional or light industrial users needing a high-power corded iron for heavy-duty soldering.
- Buyers whose work includes larger heat-demanding tasks such as the stated sheet-metal application.
Less suited to
- Buyers who need documented temperature adjustment, a soldering station or a cordless tool.
- Fine electronics work where a narrower tip or lower-power setup is preferred.
Customer reviews on Amazon
- 5 stars
63% 63% - 4 stars
15% 15% - 3 stars
5% 5% - 2 stars
0% 0% - 1 star
17% 17%
Aggregate ratings are generally favourable, with many five-star ratings, but a notable share are one-star. With no review-summary evidence, the ratings do not explain what buyers liked or disliked. They cannot establish performance or suitability for a particular task, so assess the listed 120 W power, tip and lack of stated temperature control against your needs.
Frequently asked questions
Is the Weller SI120 temperature adjustable?
The supplied listing gives an upper temperature rating of 500 Degrees Celsius but does not state that the temperature can be adjusted.
What tip is listed as supplied?
The manufacturer description says it comes with a curved, nickel-plated 12.5 mm soldering tip, type 43110. The listing has inconsistent tip formatting, so confirm the tip details with the selected listing.
What voltage does this soldering iron use?
The technical details specify 230 Volts (AC), while the title says 240 Volt. Check the voltage for the version being offered before buying.
Who is this iron intended for?
The manufacturer describes it for professional and light industrial users, and mentions sheet-metal work as an example of a task with high power requirements.
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