Fr4 pcb
Single-sided circuit cards are made of fr-4 epoxy - Consists of a series of slotted card guides on the top and bottom - Sport flux-coated bare copper traces or tracks - Available with a 1-hole island pattern Track
Bungard Double Sided Photo Resist PCB, 250mm x 250mm, FR4 Material with 35 µm Photo-coating and Positive Type.
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