# PCB Substrates: Knowing Your Dielectric Material’s Properties

**URL:** <https://sierraconnect.protoexpress.com/t/pcb-substrates-knowing-your-dielectric-material-s-properties/882>\
**Category:** Choosing materials\
**Tags:** dielectric, pcb-materials, substrates, materials\
**Created:** [January 16, 2024, 10:09pm UTC](https://sierraconnect.protoexpress.com/t/pcb-substrates-knowing-your-dielectric-material-s-properties/882 "2024-01-16T22:09:33Z")\
**Posts on this page:** 2\
**Page:** 1

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**Author:** ![lucy.sierracircuits](https://sea2.discourse-cdn.com/sierraconnect/user_avatar/sierraconnect.protoexpress.com/lucy.sierracircuits/32/8_2.png) [@lucy.sierracircuits](https://sierraconnect.protoexpress.com/u/lucy.sierracircuits)\
**Post date:** [January 16, 2024, 10:09pm UTC](https://sierraconnect.protoexpress.com/t/pcb-substrates-knowing-your-dielectric-material-s-properties/882/1 "2024-01-16T22:09:34Z")

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Originally published at: [https://www.protoexpress.com/blog/pcb-substrates-knowing-dielectric-materials-properties/](https://www.protoexpress.com/blog/pcb-substrates-knowing-dielectric-materials-properties/)  
   
A dielectric material conducts minimal electricity and provides an insulating layer between two conducting copper layers. The most common dielectric material is FR-4, but before selecting it for your board, you must carefully consider its properties.

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**Author:** ![lucy.sierracircuits](https://sea2.discourse-cdn.com/sierraconnect/user_avatar/sierraconnect.protoexpress.com/lucy.sierracircuits/32/8_2.png) [@lucy.sierracircuits](https://sierraconnect.protoexpress.com/u/lucy.sierracircuits)\
**Post date:** [January 16, 2024, 10:11pm UTC](https://sierraconnect.protoexpress.com/t/pcb-substrates-knowing-your-dielectric-material-s-properties/882/2 "2024-01-16T22:11:00Z")

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