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In Solder Rework/Repair, Solder Training and Tools

Sept 2010 Vol. 2, Iss. 33

 

Dear Subscriber:

One of the trends we have been experiencing is in the area of LGA package rework. PCB assemblers are having a difficult time with the right thermal profiles, paste volumes and configurations. Some of the packages have integrated passive devices and present some other unique challenges with respect to not disturbing these level 1 interconnects inside the package during rework. One of the potential solutions is to pre-bump LGAs prior to placement. Read about it further in the first piece in the newsletter. Our second article this month relates to a new training course on this topic.

The training sessions on the IPCA-610 revision changes were strongly attended. If you were not able to make any of these webtorials an archived version along with good participant questions can be had here. Again we invite any questions on the material presented in the new standard.
Wishing you a great fall!


Bob Wettermann
President, BEST Inc.
CktBdAnimated

 

New BEST Logo

LGA Bumping for Placement and Rework
 

LGA packages are becoming more prevalent and present both placement and rework challenges. The most common issues include: making sure that solder voiding is limited, the lack of inspection space underneath the device and the skewing of parts embedded in to some LGAs.
The most full proof way to deal with these devices is to prebump them (assuming that the lot sizes are manageable). BEST with its StencilMate(TM) process can prebump these devices for you to make sure that placement is simple, repeatable and comes with a an acceptable yield. BEST can either prebump these parts as a service or develop the right stencils for you to  bump these on your own. Our rework engineers will design the stencil to match your exacting requirements of your PCB assembly for initial placement or rework.

Call Laura Ripoli at (847) 797-9250 if you have a project requiring this type of part prework.

 
New Class in Leadless Device Rework
Large thermal mass PCB

Based on the success at recent APEX conferences as well as the increasing demand related to the usage of leadless devices BEST has developed a class on leadless device rework.

In this class you will learn several of the techniques used to place and replace QFNs, LGAs and other leadless devices (known as bottom terminated components in IPC language).

Call Katy Radcliff at (847) 797-9250 if you have an interest in attending or for more specific class information look here.


Video on Your Bike Helmet

                                            

If you are going on a cool bike ride and want to capture the moment for you and millions of your closest friends then check out this remote video system gadget.

The POV.1 is a fully integrated point-of-view (POV) video system is waterproof, dustproof, and shock-resistant. The system includes a mountable camera head, built-in video recorder, wireless remote and software for managing your point-of-view videos. Simply mount it on your helmet (I have seen similar systems duct-taped to helmets on various centuries or other rides I have been on).

More here.




 
TABLE OF CONTENTS
 
LGA Bumping and Rework
Leadless Device Rework Class
Bike Cam
 
QUICK LINKS
 
 
2 week or less lead time on BGA Reballing

Metal Stencils
BGA Reballing Preforms
PCB Repair Kit

 
Schedule the New BEST Mobile Training Center
 
SIGN UP for a 45 minute webtorial which will walk you through the most significant practical differences between the IPCA-610-D and the new E version.

DATES: September 15+29th

TIME: 12PM-1PM CST

COST: ONLY $75.00 (IPC Cost $495 + travel)


REGISTRATION:
Call Katy Radcliff at (847)-797-9250 or This email address is being protected from spambots. You need JavaScript enabled to view it..

 
New "StikNPeel" Rework Stencil Developed by BEST
 
BEST has developed a new "StikNPeel" rework stencil which insures board to stencil coplanarity, is flexible for tight space fit requirements and does not need to be cleaned. this makes for a more repeatable, faster rework process.

These stencils are available in either 4,5 or 6 mils thicknesses.

COST: ONLY $80.00 for a package of (10) pieces


Order here.
 
VOCAB- Word of the Month
Vocab

puerile

"PYOO-uhr-il" which is an adjective

The vocabulary you use tells others your level of intellect.

Definition/s:Immature, silly, childish

Usage: "An Australian friend recently jolted me with an apparently aesthetic but obviously puerile suggestion, 'Mate, can we amend this burqa ban so that only ugly women are required to wear them while the good-looking ones are mandated to wear bikinis?"

SOLDERING TIPS

soldering-img

Newsletter

WHAT'S NEW?

ARTICLE: A Look Into PCB Rework and Repair

ARTICLE: IPC-A-620 Gets a Facelift

 

 

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