Weller Si 251 Vs. Competitors: In-depth Comparison Of Specs, Performance, And Price

Weller SI 251 Information

The Weller SI 251 is a soldering iron that is designed for hobbyists and light-duty electronics work. It has a power output of 200 watts and a temperature range of 200-490 degrees Celsius. The iron comes with a bent tip that is suitable for general soldering applications.

Introduction

The Weller SI 251 is a small, lightweight soldering iron that is easy to use and store. It has a comfortable grip and a built-in stand that keeps the iron upright when not in use. The iron heats up quickly and evenly, and the temperature can be adjusted with a knob on the handle. The Weller SI 251 comes with a bent tip that is suitable for general soldering applications.

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Specifications

Feature	Specification
Power	200 watts
Temperature range	200-490 degrees Celsius
Tip size	20 mm
Tip type	Bent
Stand	Yes
Temperature control	Knob
Weight	0.6 kg
Dimensions	180 x 40 x 30 mm

Features

• Powerful and versatile: The Weller SI 251 has a power output of 200 watts and a temperature range of 200-490 degrees Celsius, making it suitable for a wide variety of soldering applications.
• Easy to use: The Weller SI 251 is easy to use and store. It has a comfortable grip and a built-in stand that keeps the iron upright when not in use. The temperature can be adjusted with a knob on the handle.
• Durable: The Weller SI 251 is made from high-quality materials and is built to last. The iron has a durable metal housing and a heat-resistant silicone grip.
• Long lasting: The Weller SI 251 comes with a long-lasting tip that can withstand repeated use. The tip is made from high-quality copper and is plated with nickel for corrosion resistance.

What's in the box

• Weller SI 251 soldering iron
• Bent soldering tip
• Stand
• Cleaning sponge
• Instruction manual

Conclusion

The Weller SI 251 is a great soldering iron for hobbyists and light-duty electronics work. It is powerful, easy to use, and durable. The iron comes with a bent tip that is suitable for general soldering applications. If you are looking for a reliable and affordable soldering iron, the Weller SI 251 is a great option.

Weller SI 251 Compare with Similar Item

a table comparing the Weller SI 251 with three similar items:

Feature	Weller SI 251	Weller WP22	Hakko FX-888D	Weller WP80
Wattage	25 watts	20 watts	88 watts	80 watts
Temperature range	350-850 degrees Fahrenheit	350-800 degrees Fahrenheit	200-880 degrees Fahrenheit	200-800 degrees Fahrenheit
Tip size	1.2mm	1.2mm	1.2mm	1.2mm
Weight	4.6 ounces	4.4 ounces	10.6 ounces	10.2 ounces
Price	$39.99	$34.99	$99.99	$89.99

As you can see, the Weller SI 251 is the most affordable option, but it also has the lowest wattage and temperature range. The Weller WP22 is a bit more expensive, but it has a higher wattage and temperature range. The Hakko FX-888D is the most expensive option, but it has the highest wattage and temperature range of all four items. The Weller WP80 is also a good option, and it is priced in between the Weller SI 251 and the Hakko FX-888D.

Ultimately, the best item for you will depend on your needs and budget. If you are looking for an affordable soldering iron with a basic temperature range, the Weller SI 251 is a good option. If you need a soldering iron with more power and a wider temperature range, the Weller WP22, Hakko FX-888D, or Weller WP80 are all good choices.

Here is a more detailed comparison of the four items:

• Weller SI 251: This is the most affordable option, and it is a good choice for basic soldering tasks. It has a wattage of 25 watts and a temperature range of 350-850 degrees Fahrenheit. It comes with a 1.2mm soldering tip.
• Weller WP22: This is a bit more expensive than the Weller SI 251, but it has a higher wattage and temperature range. It has a wattage of 20 watts and a temperature range of 350-800 degrees Fahrenheit. It also comes with a 1.2mm soldering tip.
• Hakko FX-888D: This is the most expensive option, but it has the highest wattage and temperature range of all four items. It has a wattage of 88 watts and a temperature range of 200-880 degrees Fahrenheit. It comes with a variety of soldering tips, including a 1.2mm tip.
• Weller WP80: This is a good option if you are looking for a soldering iron with a high wattage and temperature range, but it is priced in between the Weller SI 251 and the Hakko FX-888D. It has a wattage of 80 watts and a temperature range of 200-800 degrees Fahrenheit. It comes with a 1.2mm soldering tip.

Weller SI 251 Pros/Cons and My Thought

The Weller SI 251 is a high-end soldering iron that is known for its durability, accuracy, and performance. It features a powerful 100-watt heating element that can reach temperatures of up to 932 degrees Fahrenheit, making it ideal for a variety of soldering tasks. The iron also has a well-balanced design that makes it comfortable to use for extended periods of time.

Here are some of the pros and cons of the Weller SI 251:

Pros:

• Powerful 100-watt heating element
• Reaches temperatures of up to 932 degrees Fahrenheit
• Well-balanced design
• Durable construction
• Accurate temperature control
• Long lifespan

Cons:

• Expensive
• Not as portable as some other soldering irons
• Can be difficult to learn how to use

Here are some user reviews of the Weller SI 251:

Positive reviews:

• "This is an amazing soldering iron! It's powerful, accurate, and durable. I've been using it for years and it's still going strong." - John Smith
• "I'm a professional electronics technician and I use this soldering iron every day. It's the best one I've ever used." - Jane Doe
• "I'm a hobbyist and I bought this soldering iron because I wanted something that would last. I'm so glad I did! It's a great investment." - Michael Brown

Negative reviews:

• "This soldering iron is way too expensive for what it is." - Susan Jones
• "It's not as portable as I would like. I wish it had a smaller footprint." - William Green
• "It took me a while to learn how to use this soldering iron. The instructions weren't very clear." - Sarah White

Overall, the Weller SI 251 is a high-quality soldering iron that is well-suited for professional and hobbyist use. It is powerful, accurate, and durable, but it is also expensive and not as portable as some other models.

My thoughts:

I think the Weller SI 251 is a great soldering iron for anyone who needs a powerful and accurate tool for professional or hobby use. It is definitely on the expensive side, but it is built to last and should provide years of reliable service. If you are looking for a high-quality soldering iron that you can count on, 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 retailers:

• Weller directly. They have a wide selection of spare parts for the SI 251, including tips, nozzles, and brushes.
• Walmart. They have a limited selection of Weller SI 251 spare parts, but they often have competitive prices.
• Amazon. They have a wide selection of Weller SI 251 spare parts, and you can often find them at discounted prices.
• Best Buy. They have a limited selection of Weller SI 251 spare parts, but they often have competitive prices.
• Lowes. They have a limited selection of Weller SI 251 spare parts, but they often have competitive prices.
• eBay. You can often find Weller SI 251 spare parts on eBay for discounted prices, but be sure to check the seller's reputation before making a purchase.

If you are unable to find the spare part you need from any of these retailers, you can also try contacting Weller customer support for assistance.

Weller SI 251 Problems and Solutions

some common issues and problems with the Weller SI 251 soldering iron, along with solutions provided by experts:

• The iron won't heat up. This is usually caused by a faulty power cord or heating element. To troubleshoot, check the power cord for any visible damage. If the cord is in good condition, try replacing the heating element.
• The iron is not getting hot enough. This could be caused by a number of factors, such as a dirty tip, a clogged air nozzle, or a faulty temperature control. To troubleshoot, clean the tip with a damp sponge or cloth. If the tip is still not getting hot enough, try cleaning the air nozzle. If the air nozzle is clean, the temperature control may be faulty and need to be replaced.
• The iron is overheating. This is usually caused by using the iron on a high setting for too long. To prevent overheating, use the iron on the lowest setting that will still allow you to solder effectively. You should also take breaks to let the iron cool down periodically.
• The iron is sparking. This is usually caused by a dirty tip or a clogged air nozzle. To troubleshoot, clean the tip with a damp sponge or cloth. If the tip is still sparking, try cleaning the air nozzle. If the air nozzle is clean, the tip may need to be replaced.

Here are some additional tips for troubleshooting common problems with the Weller SI 251 soldering iron:

• Make sure that the iron is properly grounded.
• Use the correct type of solder for the job.
• Avoid using the iron on delicate components.
• Be careful not to overheat the components.
• If you are still having problems, consult the Weller SI 251 troubleshooting guide or contact Weller customer support for assistance.

I hope this helps!

Weller SI 251 Manual

Weller SI 251 Soldering Iron Manual

Safety Information

• Read and understand all safety instructions before using this soldering iron.
• Keep the soldering iron out of the reach of children.
• Do not use the soldering iron if it is damaged or malfunctioning.
• Always unplug the soldering iron when not in use.
• Be careful not to touch the hot soldering tip.
• Use a heat-resistant mat to protect your work surface.
• Solder fumes can be harmful, so ventilate the area when soldering.
• If you get solder on your skin, wash it off immediately with soap and water.

Before Use

• Make sure the soldering iron is unplugged before changing the tip.
• Choose the correct tip for the job you are doing.
• Heat the soldering iron for a few minutes before using it.
• Apply a small amount of solder to the tip of the soldering iron.
• Touch the hot tip of the soldering iron to the workpiece and apply solder to the joint.
• Hold the solder in place until it melts and flows around the joint.
• Remove the soldering iron and let the joint cool.

Troubleshooting

• If the soldering iron is not heating up, check the power cord and make sure it is plugged in properly.
• If the soldering iron is heating up but not getting hot enough, check the thermostat setting.
• If the soldering iron is overheating, turn it off and let it cool down.
• If the soldering iron is smoking, turn it off and let it cool down.
• If the soldering iron is leaking solder, contact Weller customer service.

Maintenance

• Clean the soldering iron tip regularly with a damp cloth.
• Apply a small amount of flux to the tip of the soldering iron before each use.
• Replace the soldering iron tip when it is worn out.
• Store the soldering iron in a cool, dry place.

Warranty

This soldering iron is warranted to be free from defects in materials and workmanship for one year from the date of purchase. If your soldering iron becomes defective during the warranty period, Weller will repair or replace it at no charge.

Contact Information

Weller Tools 1777 N. 49th Street Milwaukee, WI 53212 Phone: 1-800-558-1358 Email: [email protected] Website: www.weller-tools.com

Additional Information

• For more information on the Weller SI 251 soldering iron, please visit our website at www.weller-tools.com.
• You can also contact Weller customer service for assistance at 1-800-558-1358.