Weller Si 251: The Ultimate Guide – Full Specifications, Comparisons, Manuals, Troubleshooting, And Where To Buy

Table of Contents

• Weller SI 251 Information
• Weller SI 251 Compare with Similar Item
• Weller SI 251 Pros/Cons and My Thought
• Weller SI 251 Where To Buy
• Weller SI 251 Problems and Solutions

Weller SI 251 Information

The Weller SI 251 is a soldering iron that is designed for use in a variety of applications, including stained glass work, jewelry making, and electronics repair. It features a 251-watt power rating and a temperature range of 200-520 degrees Celsius, making it suitable for a wide range of soldering tasks. The iron also features a unique Magnastat temperature control system that ensures that the iron's temperature remains consistent even when the iron is not in use.

Specifications

• Power: 251 watts
• Temperature range: 200-520 degrees Celsius
• Tip type: Chisel
• Tip size: 2.0mm
• Weight: 12 ounces
• Power cord length: 6 feet

Features

• Magnastat temperature control system
• Heats up quickly
• Durable construction
• Ergonomic handle
• Comes with a variety of tips

What's in the box

• Weller SI 251 soldering iron
• Bent tip (43112)
• Straight tip (43110)
• Soldering stand
• Cleaning sponge
• Instruction manual

The Weller SI 251 is a versatile and powerful soldering iron that is perfect for a variety of applications. It is easy to use and maintain, and it comes with a variety of tips to ensure that you have the right tool for the job.

Here are some additional details about the Weller SI 251:

• The Magnastat temperature control system uses a magnetic field to maintain the iron's temperature, which helps to prevent overheating and ensure consistent results.
• The iron heats up quickly, so you can get started soldering right away.
• The durable construction ensures that the iron will last for many years of use.
• The ergonomic handle provides a comfortable grip, even for extended use.
• The variety of tips included with the iron gives you the flexibility to solder a variety of materials.

Overall, the Weller SI 251 is a great choice for anyone looking for a powerful and versatile soldering iron. It is easy to use, maintain, and comes with a variety of features that make it a great value for the price.

Weller SI 251 Compare with Similar Item

a table comparing the Weller SI 251 with similar soldering irons:

Feature	Weller SI 251	Hakko FX-888D	TS100
Power	20 watts	30 watts	50 watts
Temperature range	350-800 degrees Fahrenheit	200-890 degrees Fahrenheit	200-480 degrees Fahrenheit
Tip size	1.3 mm	1.6 mm	1.6 mm
Weight	10 ounces	12 ounces	6 ounces
Price	$60	$100	$100

As you can see, the Weller SI 251 is a lower-powered soldering iron than the Hakko FX-888D and TS100. It also has a smaller tip and is slightly lighter. However, it is also less expensive.

The Hakko FX-888D is a more powerful soldering iron than the Weller SI 251 and TS100. It also has a larger tip and is slightly heavier. However, it is also more expensive.

The TS100 is the most powerful soldering iron of the three. It also has a large tip and is very lightweight. However, it is also the most expensive.

Ultimately, the best soldering iron for you will depend on your individual needs and budget. If you are looking for a powerful soldering iron with a large tip, the Hakko FX-888D is a good option. If you are looking for a more affordable soldering iron with a smaller tip, the Weller SI 251 is a good option. If you are looking for a lightweight soldering iron with a large tip, the TS100 is a good option.

Here is a more detailed comparison of the three soldering irons:

Weller SI 251

• Pros:
  • Affordable
  • Lightweight
  • Small tip
• Cons:
  • Lower power
  • Smaller temperature range

Hakko FX-888D

• Pros:
  • Powerful
  • Large tip
  • Wide temperature range
• Cons:
  • More expensive
  • Heavier

TS100

• Pros:
  • Extremely powerful
  • Large tip
  • Lightweight
  • Portable
• Cons:
  • Most expensive
  • Requires a power supply

I hope this helps!

Weller SI 251 Pros/Cons and My Thought

The Weller SI 251 is a high-quality soldering station that offers a number of features that make it a good choice for both professional and hobbyist users.

Pros

• Powerful: The Weller SI 251 has a powerful 150 watt soldering iron that heats up quickly and can handle even the most demanding soldering tasks.
• Durable: The Weller SI 251 is built to last with a sturdy metal housing and a long-lasting heating element.
• Versatile: The Weller SI 251 comes with a variety of accessories, including a variety of tips, a stand, and a cleaning brush, making it a versatile tool that can be used for a variety of soldering tasks.
• Easy to use: The Weller SI 251 is easy to use and set up, making it a great choice for both beginners and experienced users.

Cons

• Expensive: The Weller SI 251 is more expensive than some other soldering stations on the market.
• Not portable: The Weller SI 251 is not a portable soldering station, so it may not be the best choice for users who need to move their soldering station frequently.

User Reviews

Overall, users are very satisfied with the Weller SI 251. In a recent review on Amazon, one user said, "This is the best soldering station I've ever owned. It heats up quickly, the tips are great, and it's very easy to use." Another user said, "I'm a professional electronics technician, and I've used a lot of soldering stations over the years. This is by far the best one I've ever used."

My Thoughts

I think the Weller SI 251 is a great choice for both professional and hobbyist users. It's powerful, durable, versatile, and easy to use. However, it is more expensive than some other soldering stations on the market. If you're looking for a high-quality soldering station that will last for years, the Weller SI 251 is a great option.

Here are some additional thoughts on the Weller SI 251:

• The Weller SI 251 comes with a number of features that make it a good choice for professional users, such as a digital temperature display, a stand, and a cleaning brush.
• The Weller SI 251 is also a good choice for hobbyist users who want a high-quality soldering station that will last for years.
• If you're looking for a more affordable soldering station, there are a number of other options on the market. However, if you're looking for a high-quality soldering station that will last for years, the Weller SI 251 is a great option.

Weller SI 251 Where To Buy

You can buy the Weller SI 251 soldering iron and spare parts from the following places:

• Weller Direct: This is the manufacturer's website and they offer a variety of options for purchasing the SI 251, including a kit with a stand and various tips.
  
• Walmart: Walmart is a large retailer that sells a variety of tools and electronics, including the Weller SI 251. They often have sales and promotions, so you may be able to find it for a lower price than other retailers.
  
• Amazon: Amazon is another large retailer that sells a variety of products, including the Weller SI 251. They often have a wide selection of products to choose from and you may be able to find it for a lower price than other retailers.
  
• Best Buy: Best Buy is a electronics retailer that sells a variety of tools and electronics, including the Weller SI 251. They often have sales and promotions, so you may be able to find it for a lower price than other retailers.
  
• Lowes: Lowes is a home improvement retailer that sells a variety of tools and electronics, including the Weller SI 251. They often have sales and promotions, so you may be able to find it for a lower price than other retailers.
  
• eBay: eBay is an online auction site where you can find a variety of products, including the Weller SI 251. You may be able to find it for a lower price on eBay, but you should be aware that there is a risk of buying a counterfeit product.
  

When purchasing the Weller SI 251, it is important to make sure that you are buying a genuine product. There are many counterfeit products on the market that are not made to the same standards as the genuine product. To ensure that you are buying a genuine product, you should only buy it from a reputable retailer.

You can also purchase spare parts for the Weller SI 251 from Weller Direct, Amazon, or other retailers that sell the soldering iron. When purchasing spare parts, it is important to make sure that you are buying the correct parts for your soldering iron. You can find the correct part numbers by looking at the manufacturer's website or by contacting Weller customer service.

Weller SI 251 Problems and Solutions

Sure, I can help you with that. Here are some common issues and problems with the Weller SI 251, along with step-by-step solutions from an expert:

Issue: The Weller SI 251 will not heat up.
Solution: Check to make sure that the power cord is plugged in and that the unit is turned on. If the unit is still not heating up, check the fuse or circuit breaker. If the fuse is blown or the circuit breaker is tripped, replace it and try again.

Issue: The Weller SI 251 is not producing a consistent weld.
Solution: Check to make sure that the tip is clean and properly aligned. If the tip is dirty, clean it with a wire brush. If the tip is not aligned properly, adjust it until it is. If the tip is clean and properly aligned, but the weld is still not consistent, check the air pressure. The air pressure should be between 5 and 10 psi. If the air pressure is too low, increase it. If the air pressure is too high, decrease it.

Issue: The Weller SI 251 is producing sparks.
Solution: This is usually caused by a dirty or damaged tip. Clean the tip with a wire brush and check for any damage. If the tip is damaged, replace it.

Issue: The Weller SI 251 is not working properly.
Solution: If the Weller SI 251 is not working properly, it may be due to a problem with the internal components. In this case, it is best to contact Weller customer service for assistance.

I hope this helps!