FR4: Flame Retardant 4
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Others
Language: English
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Frequently Asked Questions:
What is the full form of FR4?
FR4 stands for Flame Retardant 4.
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"FR4." Fullformexpand.com, https://www.fullformexpand.com/fr4/36018. Accessed 1 Jan. 2026.
Fullformexpand.com, 2026. "FR4." Accessed January 1, 2026. https://www.fullformexpand.com/fr4/36018.
"FR4." (n.d.). Fullformexpand.com. Retrieved January 1, 2026, from https://www.fullformexpand.com/fr4/36018.
FR4. (2026). Fullformexpand.com. Available at: https://www.fullformexpand.com/fr4/36018 (Accessed: 1 January 2026).
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