RoHS Lead Free Resource CenterThe Pb-Free Resource Center contains information regarding RoHS compliance and requirements for specifying Lead Free printed circuit board materials, laminated and final finishes. We have also archived our Lead Free webinars, research information and industry articles. Additionally, the Resource Center contains Fabrication Notes for both Laminate Choice Guidelines and Pb-free HASL Minimum Thickness Guidelines.
Pb-free Resource Center
LED Thermal Management Resource CenterThe LED PCB Resource Center contains materials for Light Emitting Diode Printed Circuit Boards. We also provide the latest researched information, archived webinars, industry articles, design tools like thermal calculators, fabrication notes. In addition, you will find information on non-browning soldermasks, an LED materials chart for thermal and dielectric characteristics and thermal property basics.
LED PCB Resource Center
PCB Design Tools
This Printed Circuit Board Design section contains the latest researched information, various design calculators such as a Trace Width Calculator (calculates the trace width based on a curve fit to IPC-2221) and a PCB Via Calculator (calculates the resistance, voltage drop, and power loss). DFM guidelines include the Trace Carry Capacity Charts for Maximum Current Amps and the Conductor Thickness and Width for meeting Design for Manufacturing requirements.
PCB Design Tools
IPC Design and Accessibility Standards
Quick resource for Design and Acceptability Standards and Metal Finishing Charts. Standards include IPC 6012: Acceptability Criteria, IPC-A-600: Acceptability Criteria with Visual Aids, IPC-SM-840: Soldermask Guidelines, IPC-4552: Immersion Gold, IPC-4553: Immersion Silver, IPC 4101: Laminate and Substrate Guidelines, IPC-4761:Via Plugging, and IPC-5704: Bare Board Cleanliness. General Metal Finishing Charts include ASTM-B-48 and Mil-G-45204.
RF Low Loss Materials Selection Guide
RF-microwave systems require very low loss to process low-level signals and enable high-power applications. Critical elements such as low dissipation Factor (to maximize and enable high-power applications) and dielectric constant (to allow rapid signal propagation) must be considered when selecting your RF Materials. The RF Materials Selection Guide is a low loss materials comparison chart of the high speed Microwave laminates and prepregs currently available.
Heavy Cu Resource Center
Heavy / Thick / Extreme copper printed circuit boards (>2 ounce copper per layer) are not commonly designed or consumed. Yet, their high current carrying capacity and thermal benefits do lend them to be great fits for certain applications. Due to their scarcity, though, good information for designers can be hard to find. Should there be a topic or question we have not addressed, please contact Jim Kelch and we will do our best to research the topic and add relevant information to this portal.