Zoe Wang

Improving Solder Quality: Why Nitrogen Reflow Oven Becomes the Secret Weapon of High-End Manufacturing?



In precision electronics manufacturing, every detail matters to the performance and reliability of the final product.Utilizes advanced nitrogen reflow technology, creating a low-oxygen environment through nitrogen injection, significantly improving soldering quality and consistency!

✅ Reduces oxidation, preventing oxidation of pads and component pins, ensuring a clean solder interface;
✅ Improves wetting speed, enabling more uniform solder flow and creating more reliable solder joints;
✅ Reduces solder balls and bridging, lowering defect rates and improving first-pass yields;
✅ Suppresses substrate discoloration, preserving PCB appearance and performance;
✅ Enhances solder joint mechanical strength and durability, making it particularly suitable for applications requiring high reliability.

Nitrogen reflow ovens are particularly effective in the following applications:

Double-sided reflow of OSP surface-treated boards

Difficult-to-solder components or poorly soldered boards

High-quality industries such as aerospace, automotive electronics, and medical devices

We are committed to providing customers with more stable and superior soldering solutions through leading-edge processes. Inquire about our PCBA manufacturing services and build more reliable products together!


#SMT #Reflow #NitrogenReflow #PCBAManufacturing #STHL

4 days ago | [YT] | 1

Zoe Wang

Automatic PCB Inserter

Automatic Board Feeding: Precisely feeds PCBs into the solder paste printer without manual intervention.

Efficient Batch Processing: Processes up to 30 boards at a time, significantly reducing operation time.

Precise Positioning: Millimeter-level alignment accuracy prevents scraper collisions and misalignment.



#AutomaticPCBInserter #SMTAutomation #SmartManufacturing #STHL

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1 week ago | [YT] | 1

Zoe Wang

In flexible printed circuit (FPC) manufacturing, polyimide (PI) and SH260 are two dominant substrate materials. As an ISO 9001/IATF 16949/ISO 13485 certified manufacturer, STHL breaks down their key differences:

1. Thermal Resistance

• PI:
Long-term: 260°C | Short-term: 300°C (ideal for high-temp reflow)

• SH260:

Long-term: 220°C | Short-term: 250°C (more cost-effective)

2. Mechanical Properties

→ PI:

Bend cycles >1 million (best for dynamic applications)

→ SH260:

Higher rigidity (suited for static installations)

3. Application Recommendations

✓ Automotive/Aerospace: PI (high-temp & vibration resistance)

✓ Consumer Electronics/Medical: SH260 (balanced cost-performance)



#FPCmaterials #FlexCircuitManufacturing #MaterialSelection #STHL

3 weeks ago | [YT] | 1

Zoe Wang

In flexible printed circuit (FPC) manufacturing, polyimide (PI) and SH260 are two dominant substrate materials. As an ISO 9001/IATF 16949/ISO 13485 certified manufacturer, STHL breaks down their key differences:

1. Thermal Resistance

• PI:
Long-term: 260°C | Short-term: 300°C (ideal for high-temp reflow)

• SH260:

Long-term: 220°C | Short-term: 250°C (more cost-effective)

2. Mechanical Properties

→ PI:

Bend cycles >1 million (best for dynamic applications)

→ SH260:

Higher rigidity (suited for static installations)

3. Application Recommendations

✓ Automotive/Aerospace: PI (high-temp & vibration resistance)

✓ Consumer Electronics/Medical: SH260 (balanced cost-performance)



#FPCmaterials #FlexCircuitManufacturing #MaterialSelection #STHL

3 weeks ago | [YT] | 1

Zoe Wang

Solder Paste Storage and Usage Guide | STHL's SMT Quality Cornerstone

In STHL's SMT production line, every bottle of Japan Senju solder paste enjoys "VIP" treatment - because we know:
Good solder joints start with good solder paste!

[Strict storage standards]

• Temperature control:

Unopened: 2~10℃ refrigerated (freezing prohibited!)

Reheating treatment: stand at room temperature for ≥4 hours before use

• Life cycle management:

Unopened: 6 months (managed by batch label)

Opened: used up within 24 hours

[STHL's additional guarantee]

✓ Dedicated solder paste refrigerator (with temperature alarm function)

✓ Twice daily temperature records (accurate to 0.1℃)

✓ Japan Senju original certified materials

#SolderPasteManagement #SMTProcess #SenjuSolderPaste #STHL

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1 month ago | [YT] | 1

Zoe Wang

🚀 Why is laser engraving machine indispensable for high-end PCBA manufacturing?

In the field of high-precision electronic manufacturing, laser engraving machine has become an indispensable core equipment! It uses non-contact, high-precision laser technology to engrave permanent marks (such as QR codes, serial numbers) on the surface of PCBs and components, helping enterprises achieve:

✅ 100% traceability – laser engraving QR codes record production batches and process parameters, meeting the stringent standards of industries such as automotive electronics (IATF 16949) and medical (FDA).
✅ Extreme durability – High temperature and corrosion resistance, even after reflow soldering (260°C+) or chemical cleaning, the markings are still clear as new.
✅ Anti-counterfeiting and compliance – Laser marking is difficult to tamper with, eliminating the risk of counterfeiting, and meets the (safety, traceability, high performance, and long-term) requirements of military, aerospace and other fields.

📢 Does your PCBA need to be upgraded to laser engraving technology?

#PCBA #Radiumengravingmachine #Lasermarking #Traceability #STHL

1 month ago | [YT] | 1

Zoe Wang

10th Anniversary of STHL | Bravely advancing in the rapids of Qingyuan, the team works together to move forward

On June 20-21, the 10th anniversary team building of STHL started in Qingyuan, Guangdong!

Two days and one night of peak experience
• Natural challenge: Gulong Gorge rafting + 100-meter waterfall adventure
• Teamwork: real-life CS confrontation + all-terrain off-road vehicle
• Starry sky celebration: bonfire party + barbecue feast

This is the STHL team
✓ Focus on precision manufacturing at work
✓ Dare to take risks and fight when having fun
✓ Ten years of companionship, the original intention remains unchanged

#10thAnniversaryofSTHL #TeamStrength #PassionateQingyuan #PCBAManufacturingExpert #STHL

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2 months ago | [YT] | 1

Zoe Wang

ENIG vs ENEPIG | PCB Surface Treatment Process Selection Guide


In high-end PCB manufacturing, the surface treatment process directly affects product reliability and cost. STHL explains the differences between the two mainstream processes for you:


ENIG (chemical nickel gold)
• Cost-effective choice: 30% lower cost than ENEPIG
• Basic performance: nickel layer 3-5μm, gold layer 0.05-0.1μm
• Applicable scenarios: consumer electronics/ordinary industrial boards


ENEPIG (chemical nickel palladium gold)
• Flagship process: palladium layer (0.1-0.2μm) prevents nickel corrosion
• Super compatibility: suitable for gold wire/aluminum wire bonding
• Typical applications: automotive electronics/aerospace-grade products


STHL selection suggestions
→ Multiple reflows required: ENEPIG is more reliable
→ Cost-sensitive projects: ENIG is competent enough


#PCBAManufacturer #surfacetreatment #ENIG #ENEPIG #STHL

2 months ago | [YT] | 1

Zoe Wang

R5775G*6 vs Megtron | PCB Material Selection Guide

In high-end PCBA manufacturing, material selection directly affects product performance. STHL analyzes the differences in the characteristics of two common high-speed boards for you:

R5775G*6

• Cost-effective choice: suitable for high-frequency applications below 10GHz

• Stable Dk/Df value: Dk=3.8 @10GHz, Df=0.005

• Processing-friendly: drilling/lamination process similar to FR4

Megtron

• Flagship performance: supports 40GHz+ ultra-high frequency scenarios

• Ultra-low loss: Dk=3.7, Df=0.002 @10GHz

• High temperature resistance: Tg value reaches 180℃, suitable for complex environments

STHL material selection suggestions:

→ Consumer electronics/base station equipment: R5775G*6 balances cost and performance

→ Satellite communication/radar system: Megtron 6 ensures signal integrity

#PCBmaterial #Highfrequencyboard #STHL #PCBA

3 months ago (edited) | [YT] | 1

Zoe Wang

Material temporary storage area - "efficient buffer zone" of STHL production line


In STHL's smart factory, the material temporary storage area is the key hub to ensure smooth production operation:
• Accurate zoning: storage by project/process classification to prevent mixing of materials
• Environmental control: constant temperature and humidity to protect sensitive components


#MaterialManagement #PCBAManufacturing #SmartFactory #STHL

3 months ago | [YT] | 1