Pages: [1]   Go Down
Author Topic: Atmel product change announcement  (Read 504 times)
0 Members and 1 Guest are viewing this topic.
Global Moderator
Boston area, metrowest
Offline Offline
Brattain Member
*****
Karma: 538
Posts: 27069
Author of "Arduino for Teens". Available for Design & Build services. Now with Unlimited Eagle board sizes!
View Profile
WWW
 Bigger Bigger  Smaller Smaller  Reset Reset

Received via mouser.com

http://www.mouser.com/PCN/Atmel_WC124902.pdf

Previously discussed here, looks like changed parts are now shipping.
Logged

Designing & building electrical circuits for over 25 years. Check out the ATMega1284P based Bobuino and other '328P & '1284P creations & offerings at  www.crossroadsfencing.com/BobuinoRev17.
Arduino for Teens available at Amazon.com.

USA, FL
Offline Offline
God Member
*****
Karma: 14
Posts: 689
A life? Where can I download one of those?
View Profile
 Bigger Bigger  Smaller Smaller  Reset Reset

Interesting.  What were they manufacturing with before? Gold?
Logged

//LiNK

Global Moderator
Boston area, metrowest
Offline Offline
Brattain Member
*****
Karma: 538
Posts: 27069
Author of "Arduino for Teens". Available for Design & Build services. Now with Unlimited Eagle board sizes!
View Profile
WWW
 Bigger Bigger  Smaller Smaller  Reset Reset

I read it as gold wires (from die to chip leads) are being replaced with copper wire.
Logged

Designing & building electrical circuits for over 25 years. Check out the ATMega1284P based Bobuino and other '328P & '1284P creations & offerings at  www.crossroadsfencing.com/BobuinoRev17.
Arduino for Teens available at Amazon.com.

Anaheim CA.
Offline Offline
Faraday Member
**
Karma: 47
Posts: 2891
...
View Profile
 Bigger Bigger  Smaller Smaller  Reset Reset

Yeah it's a trend that's been going on for several years, I remember hearing about it in 2006 or 7...
Copper has a different coefficient of expansion than gold and thus when driven real hard tended to part at the ultrasonic weld to the breakout pad on the die...
Was a lot of talk about ti... Seems to me that it was National Semi. that started the research...
God Bless Bob Pease... Wherever he is... Bob and Bob (Robert Widlar... inventor of the Band Gap device) WERE National Semiconductor and National folded right about the time that Bob Pease died...

Bob
Logged

--> WA7EMS <--
“The solution of every problem is another problem.” -Johann Wolfgang von Goethe
I do answer technical questions PM'd to me with whatever is in my clipboard

Anaheim CA.
Offline Offline
Faraday Member
**
Karma: 47
Posts: 2891
...
View Profile
 Bigger Bigger  Smaller Smaller  Reset Reset

@ codlink.. Yes because of it's softness and work-ability... Not much perhaps a mm or so per lead but real easy to ultrasonic weld.
Logged

--> WA7EMS <--
“The solution of every problem is another problem.” -Johann Wolfgang von Goethe
I do answer technical questions PM'd to me with whatever is in my clipboard

Upstate NY
Offline Offline
Full Member
***
Karma: 2
Posts: 184
View Profile
 Bigger Bigger  Smaller Smaller  Reset Reset

Yeah it's a trend that's been going on for several years, I remember hearing about it in 2006 or 7...
Copper has a different coefficient of expansion than gold and thus when driven real hard tended to part at the ultrasonic weld to the breakout pad on the die...
Was a lot of talk about ti... Seems to me that it was National Semi. that started the research...
God Bless Bob Pease... Wherever he is... Bob and Bob (Robert Widlar... inventor of the Band Gap device) WERE National Semiconductor and National folded right about the time that Bob Pease died...

Bob
Ironically, Bob Pease died in a car accident after attending a memorial service for another famous analog designer, Jim Williams.
Logged

USA, FL
Offline Offline
God Member
*****
Karma: 14
Posts: 689
A life? Where can I download one of those?
View Profile
 Bigger Bigger  Smaller Smaller  Reset Reset

@ codlink.. Yes because of it's softness and work-ability... Not much perhaps a mm or so per lead but real easy to ultrasonic weld.

Ah yes, I understand.  Thanks for the info.
Logged

//LiNK

Pages: [1]   Go Up
Jump to: