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Case Overview

This case highlights how HN-8806A/B silicone potting compound from Shenzhen Hanast New Materials Co., Ltd. protects solar power electronics in the Middle East, one of the world's fastest-growing photovoltaic markets. From utility-scale plants in the UAE and Saudi Arabia to distributed rooftop systems across the region, inverter and junction box manufacturers face extreme desert conditions. HN-8806A/B delivers the heat resistance, thermal management and electrical insulation that solar equipment needs to deliver decades of reliable output under the sun.

Customer Background

The customer is a photovoltaic equipment manufacturer supplying solar inverters, combiner boxes and junction boxes to utility and commercial projects across the Middle East and North Africa. Installations operate in some of the harshest environments on earth:

• Peak ambient temperatures above 50°C with enclosure temperatures even higher;
• Intense UV radiation and diurnal thermal cycling between scorching days and cool desert nights;
• Fine sand and dust ingress that accelerates wear on unprotected electronics;
• High system voltages up to 1500 V DC requiring dependable insulation;
• Demanding project timelines that reward fast, predictable production curing.

Challenge

Conventional potting resins became brittle under severe thermal cycling, while slow-curing materials created production bottlenecks. The manufacturer needed an encapsulant that would protect power semiconductors and PCBs from heat, dust and humidity, dissipate heat from high-current traces, and cure quickly enough for mass production - all without compromising flame-retardant certification.

Solution: HN-8806A/B Silicone Potting Compound

HN-8806A/B is an addition-cure, two-component silicone potting compound that cures at room temperature or with heat into a high-performance elastomer. It releases no heat or by-products during cure and causes no corrosion to sealed components, making it ideal for sensitive solar electronics. Technical highlights applied in this project:

Why HN-8806A/B Excels in Middle East Solar Applications

• Desert heat endurance: the -50°C to 250°C range comfortably covers enclosure temperatures inside dark-coloured junction boxes under full sun;
• Thermal management: ≥0.76 W/m·K thermal conductivity keeps IGBT modules and MOSFETs cool under high DC current;
• Thermal-cycling resistance: the soft Shore A 45 elastomer absorbs expansion and contraction instead of cracking, protecting solder joints across thousands of day-night cycles;
• High-voltage insulation: 25-30 kV/mm dielectric strength protects against arcing in 1500 V systems;
• Dust and moisture sealing: complete coverage shields components from sand ingress and condensation;
• Safety compliance: UL 94 V-0 flame retardancy and RoHS compliance satisfy regional project specifications;
• Production efficiency: 1:1 mixing and 80°C/12-minute heat cure support high-volume inverter manufacturing.

Results

• Encapsulated junction boxes and inverter boards passed extended desert field trials without cracking or insulation failure;
• Thermal performance of power modules improved through consistent heat transfer to the enclosure;
• Production lead times shortened with heat-accelerated curing on automated dispensing lines;
• UL 94 V-0 documentation simplified certification for utility-scale project tenders;
• The soft elastomer absorbed transport and installation vibration, reducing in-warranty returns.

Packaging and Logistics

HN-8806A/B ships in 25 kg plastic barrels per component (50 kg/set), classified as non-dangerous goods for efficient delivery to Middle East project sites. Store at 5-25°C in sealed original containers; shelf life is 6 months from manufacture.

Conclusion

Solar equipment in the Middle East demands encapsulation that survives extreme heat, UV and thermal cycling. HN-8806A/B silicone potting compound provides the thermal conductivity, insulation and mechanical resilience that keep inverters and junction boxes operating for decades. Contact Shenzhen Hanast New Materials Co., Ltd. for free samples and technical support for your solar project.