{"id":209,"date":"2026-04-23T10:37:43","date_gmt":"2026-04-23T10:37:43","guid":{"rendered":"http:\/\/www.gojgo.com\/?page_id=209"},"modified":"2026-06-07T11:11:46","modified_gmt":"2026-06-07T11:11:46","slug":"products-capabilities","status":"publish","type":"page","link":"https:\/\/www.gojgo.com\/?page_id=209","title":{"rendered":"PCB Manufacturing"},"content":{"rendered":"\n
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Reliable FR4 PCBs<\/mark>,
Made Affordable<\/h1><\/div>

Fast Turnaround,supporting up to 32 layers with high-precision impedance control.In-house factories and smart manufacturing help reduce costs and boost efficiency.<\/p><\/div><\/div>\n\n\n\n

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Get Instant Quote<\/div><\/a><\/div><\/div>\n<\/div><\/div>\n<\/div>\n<\/div>\n\n\n\n
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What is an FR4 PCB?<\/h2>\n\n\n\n

Flame Retardant 4, or FR4, is a material grade used in PCB manufacturing. It is made of fibreglass and “4” represents the UL94 V-0 flammability standard (it must self-extinguish after being ignited). Fibreglass reinforced woven glass fibre and epoxy resin with makes it excellent for electrically insulated applications. FR4 is a widely used material due to its low cost and high reliability.<\/p>\n\n\n\n

FR4 Material Overview<\/h3>\n\n\n\n

FR4 represents flame-retardant grade 4 glass-reinforced epoxy laminate. The material’s dielectric constant and dissipation factor (loss tangent) are moderate. FR4 can be used in low-speed and high-power applications, making it the first choice for many hobbyists. This makes it suitable for general-purpose electronic designs.<\/p>\n\n\n\n

Dielectric constant: around 4.5 at 1MHz (moderate). Loss tangent: around 0.02 at 1MHz (moderate). The glass transition temperature (Tg) determines how the material behaves under heat. It is one of the most important thermal properties in the classification of FR4 materials.<\/p>\n\n\n\n

FR4 comes in three different temperature ranges:<\/p>\n\n\n\n