Printed Circuit Board Assembly & PCB Design SMT Electronics Assembly Manufacturing Forum

Printed Circuit Board Assembly & PCB Design Forum

SMT electronics assembly manufacturing forum.

Double sided design

Views: 1607



Double sided design | 24 August, 2005


we are currently designing our first PCB with surface mount components on both sides of the board. I understand about solder thieves in order to help short circuits. Are there any good white papers or books which identify the best practices when designing double sided PCBs. I am looking for things like pad to pad and pad to via clearnces, the best way to pass a PLCC/QFP through a chip wave etc..


This message was posted via the Electronics Forum @

reply »


Double sided design | 25 August, 2005

IPC-2221A, Generic Standard on Printed Board Design, the base document that covers all generic requirements for printed board design, regardless of materials. From there, the designer can choose the appropriate sectional standard for a specific technology.

Sectional standards are: * IPC-2222, Sectional Design Standard for Rigid Organic Printed Boards * IPC-2223, Sectional Design Standard for Flexible Printed Boards * IPC-2224, Sectional Standard for Design of PWBs for PC Cards * IPC-2225, Sectional Design Standard for Organic Multichip Modules (MCM-L) and MCM-L Assemblies * IPC-2226, Sectional Design Standard for High Density Interconnect (HDI) Printed Boards.

reply »

High Precision SMT Fluid Dispensers

SMT feeders