Materials-selection articles for PCB programs - laminate families, copper types, surface finishes, and practical tradeoffs XFPCB engineers discuss when aligning performance with fab capability.
FR-4, aluminum IMS and ceramic boards are not three rows in one laminate table. Each one changes drilling, lamination, and whether a plated hole is allowed to touch the base.
Read articleFR-4 vs Rogers-type laminates for sub-6 GHz wireless boards: when FR-4 works, which RF features need low-loss material, and how a switch changes stackup, cost and lead time.
Read articleHow to pick and specify each metal core PCB material: aluminium alloy and temper, copper or steel bases, dielectric families beyond W/m·K, copper foil, and safe substitutions.
Read articleCost-tier PCB materials compared: FR-1/FR-2 paper phenolic, CEM-1 and CEM-3 versus FR-4. Construction, plated-hole limits, punching, moisture, and when FR-4 is cheaper anyway.
Read articleHow prepreg becomes real dielectric thickness: nominal vs pressed values, resin fill against copper, Dk shift with resin content, and when to lock glass style or leave plies to the fab.
Read articleFR-4 is a family, not a recipe: glass cloth, epoxy, curing agent, fillers and flame retardant. What each does, how laminate is made, and how to read Tg, Td, T288 and CTE values.
Read articleFactory/buyer guide: core laminates vs prepreg vs adhesive sheets/bondply in multilayer and flex stacks, Tg/Td/CTE notes, China fab RFQ locks.
Read articleFactory/buyer lead-free FR-4 vs high frequency: reflow vs Tg/Td, when HF FR-4 is enough vs true low-loss, Dk/Df honesty, stack notes, China fab RFQ locks.
Read articleFactory/buyer low Dk / low Df PCB materials: what Dk and Df mean for loss and delay, when to leave FR-4, hybrid stack notes, copper roughness honesty, China fab RFQ locks.
Read articleFactory buyer guide: when solder mask color is cosmetic vs AOI/rework; China fab stock colors vs specials; RFQ fields for color, matte/gloss, silk, dams.
Read articleFactory buyer guide: when FR4 is the default laminate; high-Tg / halogen-free / CTI asks; RFQ fields (Tg, Td, CAF, stackup, copper foil); when RF/flex/MCPCB is next.
Read articleChina-fab guide to ED copper foil: drum shiny vs matte, four surface treatments, Grade 1 vs Grade 3/HTE RFQ language, and peel vs etch/impedance.
Read articleFactory guide to electrically conductive adhesive on PCB: ICA vs ACA, cure systems, formulation, when China PCBA accepts ECA vs solder, failure modes, and RFQ fields.
Read articleAnswer-first China-fab guide to double-sided flex dynamic bending: why PTHs crack in the bend zone, single-copper bend windows, coverlay/plating mask controls, and RFQ callouts that prevent via fatigue scrap.
Read articleAnswer-first China-fab guide to double-sided flex with plated through holes: plating thickness tradeoffs, adhesiveless materials, microvia notes, stiffener/coverlay, and RFQ fields that keep vias out of trouble.
Read articleAnswer-first China-fab guide to dynamic flex materials: RA vs ED copper, PI vs PET, adhesiveless stacks, adhesive/coverlay thickness, and RFQ fields that lock bend-life intent.
Read articleAnswer-first China-fab guide to laminate dimensional stability: why thin cores shift, RTF vs brush, glass/resin control, CTE/Tg, and RFQ notes that cut multilayer registration scrap.
Read articleAnswer-first China-fab guide to PCB substrates: what substrate means (core/prepreg), FR-4 as a grade not a single recipe, when flex/MCPCB/ceramic make sense, and RFQ fields that stop wrong-material quotes.
Read articleAnswer-first China-fab guide to PCB Dk and Df: what they control, marketing datasheet vs construction tables, loss budget vs copper roughness, stability, and RFQ fields that keep impedance quotes honest.
Read articleConnector-first guide to PCB finished thickness from 0.8 to 2.0 mm: edge-card fit vs 1.57-1.6 mm defaults, finished thickness vs core myth, impedance geometry, thin-panel reflow support, when 2.0 mm earns cost, and RFQ stackup callouts.
Read articleChina fab view of double-sided PCB technology: two copper foils on FR-4, PTH plating as the reliability hinge, fab yield steps, when 2-layer wins vs multilayer or metal-core, and RFQ notes for copper, holes, IPC class, and both-side SMT.
Read articleChina fab substrate guide to polyimide vs FR-4: dynamic vs static bend class, PI film thermal and chemical strengths, moisture bake and cost tradeoffs, RA copper and adhesiveless flex life, rigid-flex hybrids, and RFQ callouts that stop over-spec and under-spec.
Read articleMaterials covers the broader bill of materials and finish stack. Substrates focuses more tightly on laminates, cores, and dielectric constructions used in the stackup.
Yes. Share impedance targets, temperature, frequency, and reliability needs via Technical Support or your RFQ so engineers can suggest manufacturable options.