NEWS & ENGINEERING
PCB · PCB ASSEMBLY · DESIGN · PROCUREMENT AND ACCEPTANCE
ADL5602 is a broadband gain block with internal 50 Ω matching, but bias inductors, coupling capacitors, PCB returns, and calibration planes still affect results. This article uses power budgets, a two-tone intermodulation example, and measurement records to explain normal small-signal gain with large-signal distortion, defining the boundaries of the 5 V supply and typical RF parameters.
Read ArticleBefore comparing Rogers materials, align process Dk, design Dk, frequency, and test methods, then check Df, copper foil, dielectric thickness, and thermomechanical conditions. This article provides material cards, propagation-delay sensitivity calculations, a substitution-review checklist, and troubleshooting for simulation/measurement differences.
Read ArticleCompare dielectric thickness, thermal conductivity, area-normalized thermal resistance, and insulation conditions together for Thermal Clad metal substrates. Using thermal-path decomposition and a 10 W heat-source example, this article explains why higher conductivity may not reduce component temperature rise and provides records for material selection, mounting contact, and specimen measurements.
Read ArticleRoHS material review starts with manufacturer part numbers, material composition, and declaration coverage. This article compares supplier declarations, screening, and targeted testing, using a connector substitution example to explain documentation coverage, change approval, lot traceability, and common gaps.
Read ArticleESP32-S3 layout starts by distinguishing a bare chip from a module, then arranging power loops, RF matching, the crystal, and antenna clearance. This article provides a four-layer constraint table, controlled experiments for communication problems after enclosure installation, and first-board record examples. It identifies where manufacturer values apply and checks USB and storage interfaces separately.
Read ArticleCompare PCB layout, hardware, firmware, prototypes and validation as separate work packages before accepting an electronics-development quotation.
Read ArticleCompare high-frequency, hybrid, and rigid-flex budgets by grade, stackup, copper foil, bending, and testing. Retain historical references' currencies and missing conditions, with three structural calculations, material-substitution conditions, and a complete RFQ checklist.
Read ArticleSeparate heavy copper, gold fingers, beveling, and HDI via treatment into preparation, manufacturing, and verification costs. Compare inclusions by via-layer pairs and surface zones, using three engineering-allocation and reorder examples to avoid duplicate charges and scope omissions.
Read ArticleFor standard FR-4 prototype budgets, align individual boards, delivery panels, and billable area first, then check package or itemized quotations against layers, copper weight, vias, and inspections. Examples using 5 boards, 50 boards, and panels with rails explain batch totals and per-board allocation.
Read ArticleCompare PCB assembly quotations by separating NRE, setup, components, assembly, test and logistics under the same revision and accepted quantity.
Read ArticleRemote PCB purchasing must connect controlled files, engineering approvals, packaging/shipping, receipt, and acceptance. This article adds delivery-responsibility tables, split-count and chargeable-weight examples, remote revision confirmation, and exception-evidence processes. It distinguishes dispatch, logistics receipt, and technical acceptance without promising city-specific delivery times or local factories.
Read ArticlePCB supplier assessment should verify business entities, actual manufacturing responsibilities, and project-specific engineering responses. This article adds a visit-location confirmation table, on-site meeting inputs/outputs, and a quotation-scoring method using identical drawings. It explains how to confirm appointments, visit scope, collection, and exception contacts without inferring local manufacturing or uniform lead times from a Shenzhen address.
Read ArticleFrom fabrication files and PCB structures to assembly, material supply, design, and acceptance. Choose a category by service or open a specific topic from the illustrated list.
Compare PCB fabrication, PCB assembly, and electronics design. For a specific decision, browse the engineering topic library. Project files, standards, and acceptance conditions govern the engineering review.
Tell us the product use and which files are available. We can define the next engineering step even when the data package is not complete.
