finishing.com -- The Home Page of the Finishing Industry
A website for Serious Education, promoting Aloha,
& the most FUN smiley you can have in metal finishing

HomeFAQsBooksHelpWantedAdvertiseForum
topic 9822

High throwing power in reverse pulse plating


(2001)

Hello,

I'm trying to find the correct parameters for reverse pulse plating for 3.2 m"m panels thick and aspect ratio of 11 at least. Until now I got throwing power of only 60% for these panels and big "dog bone". I would like to get hints.

Regards,

Benny Minkowski
P.C.B - Migdal Haemek, Israel


(2001)

You will probably find that there is no single PPR recipe that is agreed upon in the industry.

I have read in various publications that a 10 or 20 ms forward with 0.5 to 1 ms reverse is the timing target. Keep the ratio at 20:1. The range for current density is forward at current density X and reverse at 2.5 X to 3 X. Start at 20-30 ASF forward.

Don't be surprised if different cycles work best for different aspect ratios. And through-hole needs different cycles than blind vias. Your best source for exact recommendations is the plating bath vendor. Secondary source is the supplier of the power supply.

bill vins
Bill Vins
microwave & cable assemblies
Mesa (what a place-a), Arizona 



This public forum has 60,000 threads. If you have a question in mind which seems off topic to this thread, you might prefer to Search the Site

ADD a Q or A to THIS thread START a NEW THREADView This Week's HOT TOPICS

Disclaimer: It's not possible to diagnose a finishing problem or the hazards of an operation via these pages. All information presented is for general reference and does not represent a professional opinion nor the policy of an author's employer. The internet is largely anonymous & unvetted; some names may be fictitious and some recommendations may be deliberately harmful.

  If you need a product/service, please check these Directories:

JobshopsCapital Equip. & Install'nChemicals & Consumables Consult'g, Train'g, SoftwareEnvironmental ComplianceTesting Svcs. & Devices


©1995-2017 finishing.com     -    Privacy Policy
How Google uses data when you visit this site.