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AlN Substrate Blanks for DBC and DPC Manufacturing: Key Parameters That Affect Processing Yield

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With the advancement of SiC, GaN power devices and high-power electronic systems, ceramic metallization processes such as DBC (Direct Bonded Copper) and DPC (Direct Plated Copper) are placing higher demands on AlN substrates in terms of dimensional stability, flatness, surface condition, thermal conductivity, and batch consistency.   For DBC, DPC processing companies and power module packaging manufacturers, an often overlooked issue in production is that product processing yields may still fluctuate across different batches, even when subsequent metallization process parameters remain largely stable.   Such issues do not necessarily stem from the metallization process itself. When there are variations in thickness tolerance, flatness, surface quality, and internal defects of AlN substrate blanks—the base material for subsequent processing—these differences may be further amplified during metallization, patterning, and dicing, ultimately resulting in abnormal interface bonding...
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High temperature sintering setter used on metal manufacturing and electronics industries

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How High Voltage Feedthroughs Enable Reliable Power Transmission in Excimer Laser Systems In high-precision manufacturing fields such as semiconductor lithography, laser processing of display panels, and fiber Bragg grating writing, excimer lasers have become key equipment in numerous advanced manufacturing processes due to their deep ultraviolet wavelengths, high energy density, and precise processing capabilities. Excimer laser systems typically employ sealed discharge chambers, where laser output is generated by high-voltage pulse excitation of the working gas. During this process, external power must be reliably transmitted to internal electrodes within the chamber without compromising the chamber’s original vacuum-sealed environment. However, maintaining long-term reliable vacuum performance while achieving high-voltage electrical connections has always been a significant challenge in laser system design. High-voltage feedthroughs are critical components that address this issue, c...
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Why Do Ceramic Igniters Fail? Common Causes and How to Extend Service Life

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  Ceramic igniters are widely used in various ignition systems—such as gas burners, biomass pellet stoves, industrial heating equipment, and other hot surface ignition (HSI) systems—due to their fast heating speed, high ignition efficiency, and flameless operation. As equipment evolves toward higher reliability and lower maintenance requirements, an increasing number of manufacturers are focusing on the long-term stability of igniters, rather than merely whether they can successfully ignite.   Nevertheless, many devices in actual use suffer from slow ignition, low ignition efficiency, or early igniter breakdown. Most users blame such problems on defective products, yet from an engineering standpoint, the lifespan of ceramic igniters is determined by multiple interacting factors: material formulation, structural design, working environment, and installation techniques.     1. Root Causes of Premature Failure in Ceramic Igniters   Ceramic igniters work in sustain...
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