CrowCrowCrow
CrowCrowCrow
Search products...
My Orders
Cart

Looking for an imported product?

We can arrange it. Send the name or a store link on WhatsApp — we'll check if we can source it and quote the all-in India price.

WhatsApp Us
CrowCrowCrow

Free Shipping

Eligible orders across India

Secure Packaging

Factory-sealed, damage-safe

About

  • About CrowCrowCrow
  • How It Works
  • Careers
  • Press & Media
  • Sustainability
  • Blog & Guides
  • Why Choose CrowCrowCrow

Buyer Help

  • Contact Us
  • Track Order
  • Customs & Duties
  • Size Guide
  • Payment Options
  • FAQs
  • Buyer Protection

Our Policies

  • Privacy Policy
  • Shipping Policy
  • Terms and Condition
  • Return and Refunds Policy

Programs & B2B

  • Rewards Program
  • Refer a Friend
  • Student DiscountSoon
  • Affiliate Program
  • Wholesale & B2B
  • Corporate Gifting
  • Free Tools
  • Price Match

Connect With Us

Payment Methods

Visa
Mastercard
RuPay
Amex
UPI
Google Pay
PhonePe
Paytm

Shipping Partners

BluedartDelhiveryExpressBoxIndia Post
Cookie Policy··Disclaimer·DMCA·MCP for AI·Authenticity·Money-Back·Security

© 2026 Color Papers India Private Limited

Help us give you a better experience. We use cookies to remember your cart, speed up checkout, and show you authentic US products worth importing. You stay in control — your data is handled per India's DPDP Act 2023. Cookie Policy

Parts & Accessories
  1. Home
  2. Tools & Home Improvement
  3. Welding & Soldering
  4. Soldering & Brazing Equipment
  5. Parts & Accessories
  6. Wonderway Sn42/Bi58 T4…
wonderway

Wonderway Sn42/Bi58 T4 Lead Free Solder Paste 20g (0.71 oz) | Low Melting Point for Electronics Repair

4.5
(1,108 Ratings)
Wonderway Sn42/Bi58 T4 Lead Free Solder Paste 20g (0.71 oz) | Low Melting Point for Electronics Repair - main product image
All-inclusive price — duties & taxes paid, no customs charges at delivery
₹1,906₹2,767

You save ₹861 (31%)

31% off the seller list price

Qty
700+ bought across the US last month
Wonderway Sn42/Bi58 T4 Lead Free Solder Paste 20g (0.71 oz) | Low Melting Point for Electronics Repair — T4 20g
T4 20g
₹1,906
₹2,767
In Stock

Doorstep delivery by 21 Oct - 23 Oct from USA

Add on Google

Tested and Trusted · Always Original & 100% Imported

View trust tables•Know about trust badges
100% Authentic
100% Authentic
Factory-Sealed
Factory-Sealed
All Duties Included
All Duties Included
GST Invoice Issued
GST Invoice Issued
ExpressBox Tracked
ExpressBox Tracked
Secure Payments
14-Day Smile Guarantee
14-Day Smile Guarantee

Precision Electronics Repair Made Easy

About this item

Wonderway Sn42/Bi58 T4 Lead Free Solder Paste is engineered for precision electronics repair in India. With a low melting point of 138℃ and a no-clean formula, it ensures smooth application and bright, reliable solder joints. Imported from authorized US retailers and authorized brand partners, all customs duties and GST are included in the price, with delivery via ExpressBox tracked shipping.

This solder paste features a strong viscosity and a pushing design for smoother flowing, minimizing waste during welding. The Sn42/Bi58 alloy composition is ideal for sensitive electronic components where lower temperatures are crucial. Reviewers praise its effectiveness on circuit boards, ICs, phones, and other appliances.

Compared to local alternatives, this USA-sourced solder paste provides consistent performance and a lead-free composition vital for modern electronics. The 20g net weight is suitable for numerous repair tasks. Expect delivery within 12-14 days.

Key Features

  • Paste Content: Alloy Tin 42% Bi58% , Sloder Flux Content: 10.5%
  • Product Parameters: Total Weight: 29g, Net Weight Of Paste: 20g
  • Paste Features: No Clean, Strong Viscosity, Bright Welding Point
  • Product Advantages: Pushing design for Smoother Flowing, No Waste During Welding
  • Applications: Widely Used In Circuit Board, IC, Phone, TV and Other Household Appliances and Industrial Equipment

Why choose this product

Precision Soldering for Modern Electronics

This Wonderway Sn42/Bi58 solder paste is formulated for the demands of modern electronics repair. Its low melting point of 138℃ is critical for heat-sensitive components like CPUs and ICs, preventing damage that higher-temperature solders might cause. The no-clean formula simplifies the repair process, leaving minimal residue and bright, reliable joints. Imported from authorized US retailers and authorized brand partners, it guarantees authenticity and quality. All customs duties and GST are pre-paid, ensuring a transparent landed price for buyers in India. Delivery is handled efficiently via ExpressBox tracked shipping.

Ideal for Hobbyists & Professionals

This solder paste is perfect for anyone repairing circuit boards, smartphones, TVs, or other electronic devices. Its strong viscosity and smooth-flowing design make it easy to apply precisely, even for intricate work. While it excels in lead-free applications, users with older leaded solder equipment might find it less compatible. If you require a solder for high-temperature industrial applications or are working exclusively with leaded solder, consider alternatives. For standard electronics repair needing a reliable, low-temperature, no-clean solution, this paste is an excellent choice.

How to use

  • Prepare the Surface — Ensure the soldering iron tip is clean and tinned. Apply a small amount of the Wonderway solder paste to the component leads or PCB pads that require soldering. Use a fine-tipped applicator or the solder paste syringe for precision.
  • Apply Heat and Solder — Heat the joint with your soldering iron set to approximately 150-180℃ (slightly above the paste's melting point). Allow the paste to melt and flow, creating a strong, bright solder joint. Avoid overheating sensitive components.
  • Cool and Inspect — Remove the soldering iron and allow the joint to cool naturally. Inspect the solder joint for a bright, shiny appearance, indicating a good connection. Since this is a no-clean formula, no further cleaning is typically required.

Example scenarios

Typical situations where Wonderway Sn42/Bi58 T4 Lead Free Solder Paste 20g (0.71 oz) | Low Melting Point for Electronics Repair helps — illustrative scenarios, not customer reviews.

1
Scenario 1
Illustrative example
Where it helps

Repairing a smartphone motherboard with delicate ICs in a humid Indian climate.

How this product helps

The Wonderway Sn42/Bi58 paste's low 138℃ melting point prevents heat damage to sensitive components. Its no-clean formula and strong viscosity ensure precise application and reliable joints, crucial for stable phone repairs, even in challenging environmental conditions.

2
Scenario 2
Illustrative example
Where it helps

A hobbyist needing a reliable solder for various small circuit board projects and appliance fixes.

How this product helps

The 20g tube provides ample paste for multiple projects. Its smooth-flowing, no-clean formula simplifies the soldering process, yielding bright, strong joints essential for hobbyist electronics. The lead-free composition is also a responsible choice for modern projects.

Specifications & installation

Specifications

Alloy CompositionTin 42% / Bismuth 58%
Solder Flux Content10.5%
Lead ContentLead-Free

Installation & usage

Application MethodPushing design for smoother flow
Residue TypeNo Clean
Recommended UseElectronics PCB, IC, Phone, TV, Household Appliances, Industrial Equipment Repair
Cost per use20 g tube at 1 g/repair = 20 repairs: ₹95.30 per repair
Shelf life after opening12 months (typical for solder paste, store in cool, dry conditions)
Reapplication math20g tube suitable for approximately 20-30 small to medium electronic repairs.
ContraindicationsNot recommended for high-temperature industrial soldering or applications requiring leaded solder.
Allergens / common irritantsContains tin and bismuth compounds. Avoid prolonged skin contact. Ensure adequate ventilation during use.

How we compare

FeatureWonderway Sn42/Bi58 T4Others
Melting PointLow 138℃ (280℉) for sensitive componentsVaries; many local options are higher temp leaded or lead-free alloys
Formula TypeNo-Clean, strong viscosity, smooth flowVaries; some local pastes may require cleaning or have inconsistent flow
Alloy CompositionSn42/Bi58 Lead-FreeVaries; may include leaded alloys or different lead-free compositions
ApplicationIdeal for PCB, IC, phone, TV repairGeneral electronics repair, suitability varies by specific local product
Cost per repair20g tube — ₹95.30 per repairLocal 20g pastes typically range from ₹200-₹500, depending on brand and alloy

Product details

SKUjqm2667
GTIN0796520309340
BrandWonderway
Model NumberSP-Sn42Bi58
Part NumberSP-20G-Sn42Bi58
Net Weight of Paste20g (0.71 oz)
Total Package Weight29g (approx. 1 oz)
Melting Point138℃ (280℉)
MaterialSolder paste
Country of OriginNot stated by manufacturer — US retail version, sourced from authorized US retailers and authorized brand partners

About wonderway

Wonderway specializes in soldering supplies, offering a range of pastes and accessories designed for electronics repair. Their focus is on providing reliable tools for hobbyists and professionals.

Compliance & Legal

Contains tin and bismuth compounds. Avoid prolonged skin contact. Ensure adequate ventilation during use. Not intended for high-temperature industrial applications. For adult/hobbyist use only.

Customer Reviews

Share your experience

Bought this from CrowCrowCrow? Other buyers want to hear how it went.

No reviews from buyers in India yet. Be the first to share your experience!

FAQ, See What Others Asked

How to buy an original Wonderway Sn42/Bi58 T4 Solder Paste in India?
Purchase directly from crowcrowcrow.com. We source authentic products from authorized US retailers and authorized brand partners, ensuring they are factory-sealed and imported per-order. All customs duties and GST are included in the listed price, and delivery is via ExpressBox tracked shipping for peace of mind.
What is the melting point of this Wonderway solder paste?
This Wonderway Sn42/Bi58 solder paste has a low melting point of 138℃ (280℉). This makes it ideal for repairing heat-sensitive electronic components like ICs and CPUs without causing damage.
Is this solder paste suitable for all types of electronics repair?
Yes, this paste is widely used for circuit boards, ICs, phones, TVs, and other household appliances. Its no-clean formula and smooth application are beneficial for most common electronic repairs.
Do I need to clean the residue after using this solder paste?
No, this is a 'No Clean' solder paste. It is designed to leave minimal residue after soldering, which typically does not require cleaning. This saves time and simplifies the repair process.
Will this solder paste fit my existing soldering iron or station in India?
This is a solder paste, not a tip. It is applied with a soldering iron or station. Ensure your soldering iron or station is suitable for lead-free solder and has appropriate temperature control for 138℃ applications. The paste itself is universally applicable with the right tools and technique.
What are the benefits of using lead-free solder paste?
Lead-free solder paste, like this Sn42/Bi58 formulation, is environmentally friendlier and complies with regulations that restrict lead usage in electronics. It's crucial for repairing modern devices and ensures your repairs meet current standards.
How long will the 20g of solder paste last?
The 20g net weight is suitable for numerous repair tasks. At an average application of 1g per repair, you can expect to complete approximately 20 repairs. This provides excellent value for hobbyists and professionals undertaking multiple projects.

Frequently bought together

Wonderway Sn42/Bi58 T4 Lead Free Solder Paste 20g (0.71 oz) | Low Melting Point for Electronics Repair

This item:

Wonderway Sn42/Bi58 T4 Lead Free Solder Paste 20g (0.71 oz) | Low Melting Point for Electronics Repair

₹1,906

Wonderway Sn42/Bi58 T4 Lead Free Solder Paste 20g (0.71 oz) | Low Melting Point for Electronics Repair

This item

Wonderway Sn42/Bi58 T4 Lead Free Solder Paste 20g (0.71 oz) | Low Melting Point for Electronics Repair

₹1,906

Total price:

₹21,990

You save ₹5,294 (19%) Extra

3 items selected

3 items

₹21,990

You save ₹5,294 (19%) Extra

Product Comparison

Attributes
Current
Wonderway Sn42/Bi58 T4 Lead Free Solder Paste 20g (0.71 oz) | Low Melting Point for Electronics Repair
Wonderway Sn42/Bi58 T4 Lead Free Solder Paste 20g (0.71 oz) | Low Melting Point for Electronics RepairBuy Now
Wonderway Sn42/Bi58 T5 Lead Free Solder Paste 20g (0.7 oz) | Low Melting Point for Electronics Repair
Wonderway Sn42/Bi58 T5 Lead Free Solder Paste 20g (0.7 oz) | Low Melting Point for Electronics RepairBuy Now
wonderway Sn42/Bi58 T5 Lead Free Solder Paste No Clean, 138℃ Melting Point (20g Net Paste) | For Electronics & Appliances
wonderway Sn42/Bi58 T5 Lead Free Solder Paste No Clean, 138℃ Melting Point (20g Net Paste) | For Electronics & AppliancesBuy Now
Eagle Abrasives Kovax Dry Guide Coat Orange 100g (3.5 oz) with Applicator | Find Sanding Imperfections
Eagle Abrasives Kovax Dry Guide Coat Orange 100g (3.5 oz) with Applicator | Find Sanding ImperfectionsBuy Now
AccuSharp Knife Sharpener, Tungsten Carbide, 22cm (8.6") | Restores & Hones Straight & Serrated Knives
AccuSharp Knife Sharpener, Tungsten Carbide, 22cm (8.6") | Restores & Hones Straight & Serrated KnivesBuy Now
Sorority Shop Phi Mu Lumbar Pillow 12" x 16" (30cm x 40cm) | Retro Design for Sisterhood Pride
Sorority Shop Phi Mu Lumbar Pillow 12" x 16" (30cm x 40cm) | Retro Design for Sisterhood PrideBuy Now
Contigo AUTOSEAL West Loop Vacuum-Insulated Stainless Steel Travel Mug 16 oz (473ml) Crystal Sake | Leak-Proof 11-Hr Hot / 24-Hr Cold
Contigo AUTOSEAL West Loop Vacuum-Insulated Stainless Steel Travel Mug 16 oz (473ml) Crystal Sake | Leak-Proof 11-Hr Hot / 24-Hr ColdBuy Now
Spec
Price
₹1,906
₹2,767
₹9,860
₹12,913
₹10,224
₹11,604
₹6,305
₹8,038
₹3,680
₹4,109
₹5,449
₹6,568
₹7,004
₹11,114
Rating
4.50(1,108)
4.50(1,105)
4.50(1,102)
4.50(340)
4.70(28K+)
5.00(12)
4.60(58K+)
Brand NamewonderwaywonderwaywonderwayEagle AbrasivesACCUSHARPSorority ShopContigo
SourceUS RetailUS RetailUS RetailUS RetailUS RetailUS RetailUS Retail
Sold ByCrowCrowCrowCrowCrowCrowCrowCrowCrowCrowCrowCrowCrowCrowCrowCrowCrowCrowCrowCrowCrow
Imported from USA
₹1,906₹2,767

You Save ₹861

Estimated delivery: Doorstep delivery by 21 Oct - 23 Oct from USA
Add on Google
Visa
Mastercard
Google Pay
UPI
15-Point QC Passed
😊14-Day Smile Guarantee

Fast Shipping

Secure Packaging

Free Return

Quality & authenticity

Security & Privacy

Safe payments
Secure privacy

Delivery guarantee

Tracked from USA · duties included
Delayed? Up to ₹500 credit*
Not delivered in 30 days? Full refund
Damaged? Free return

Your Order Journey: From Purchase to Doorstep

You Order
Place your order
USA Warehouse dispatch
Packed & shipped
International Air Shipping
Fast transit
Consignment to India Warehouse
Customs cleared
Doorstep delivery
Delivered to you
You Order
Place your order
USA Warehouse dispatch
Packed & shipped
International Air Shipping
Fast transit
Consignment to India Warehouse
Customs cleared
Doorstep delivery
Delivered to you

Why shop with us

Crowcrowcrow: The Only Safe Lane for US-Market Exclusives

One price. One payment. No surprises.

High risk

Buying Direct

Recommended

Crowcrowcrow

Safe Lane

vs
₹5,718+ (3× the price)
₹1,906 locked, all-in
Hard to get the original US version in India
Original US version, shipped to your door
Extra pay for Import Duties, GST, and forex fees
One price in INR, no customs charges at delivery
4–12 weeks · No tracking
12-14 days · live tracking
Grey market, no guarantee, no protection, no refund
100% authentic US, India-verified, return available
Lost in transit = ₹0 back
Full protection included