In a blog post, Micro X-Ray has discussed how silicon potted x-ray tubes are an ideal option for applications that require less than 15 watts, incorporating a high-voltage cable and filament wires to provide electrostatic isolation and improve stability.
Find Silicon Potted Xray Tubes
Micro X-Ray Inc.
370 Encinal Street, Suite 200, Santa Cruz, CA, United States 95060
https://microxray.com/products/siliconpottedxraytube/