Sensor and transducer encapsulation

ElectronicsElectrical-grade low-viscosity 2K PU
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What it is

What it is

Pressure, temperature, humidity, acceleration sensors and other transducers in industrial and automotive applications are encapsulated in PU for protection against humidity, vibration and impacts. Low-viscosity formulations allow penetration in microstructures without damage to sensing elements.

The PU technology applied here is typically electrical-grade low-viscosity 2k pu, selected for the combination of mechanical, chemical and processing properties suitable for the application. Specific formulations vary by equipment manufacturer or final integrator, but the base system has stable characteristics documented in technical literature and segment-specific standards.

Why it matters

Why it matters

For electronics manufacturers and EMS, sensor and transducer encapsulation is a decision simultaneously impacting unit cost, field failure rate, regulatory certification and production cycle time. Wrong material costs cents per unit and hundreds of millions in accumulated recall. Right material delivers years of operation without failure even in aggressive environments.

Current drivers. Miniaturization and power density grow in all segments — each generation packs more function per cm², generating more heat and more contamination vulnerability. Regulation of electronics in specific environments (medical ISO 13485, automotive IATF 16949, aerospace AS9100) gets stricter. And industrial electrification (5G, EVs, Industry 4.0, IoT) created new consumer segments in accelerated expansion.

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