秒速赛车历史开奖数据The 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
秒速赛车下载The 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
秒速赛车五码计划两期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
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.