PCB Fabrication quote PCB Assembly quote Free passive parts

How To Place Diodes Using Silk Screen Marks

Diodes are polarized components that must be placed on a PCB in a certain way. However, a board that has a (+) silk screen marking is not enough information to tell the assembly house how to correctly insert a diode because there are different types of diodes. For zener or barrier diodes, the (+) marking may or may not be the cathode of the component. Furthermore, an LED usually has a (+) anode, but not all the time.

To verify the proper way to place a diode onto a PCB, it is best to use a symbol of a diode or an indication of an anode or a cathode as per standards of the electronics industry. You can also use an “A” or a “C.” Ensure you also mark the PCB with a reference identifier such as D3, D4, etc. so the assemblers know it isn’t a capacitor. By making your silk screen marks clear, the PCB can be assembled on time and at the lowest cost.

« Older posts

Bittele Electronics Completes New PCB Assembly Line
Bittele strategy climbs turnkey PCB assembly ladder
Bittele Electronics Announces ISO 9001:2008 Certification
Bittele Electronics Reduces Customer Costs with Free Passive Parts Service
Design for Manufacturability (DFM) guide
Sample Bill of Materials (BOM)
Sample Assembly drawings
PCB Fabrication Specifications
payment types
About Us | Services | Quality | Blog | Privacy | Contact
Copyright 2003-2017, Bittele Electronics Inc. All Rights Reserved.