Electronics Forum | Thu Aug 24 15:37:50 EDT 2006 | Chunks
Hi Any, This is from an earlies thread "Solder Ball After Reflow Process". Date: August 16, 2006 01:52 PM Author: Russ Subject: Solder Ball After Reflow Process Oven settings are meaningless here. What does the board see? It is the paste we a
Electronics Forum | Mon Mar 30 03:10:44 EST 1998 | Patrick Ng
Hi, We have encountered de-wetting issues with gold plated components( SMT LEDs ). The problem comes and go and we yet to locate the root cause ( process, component or solder paste etc ). The rest of the components on the boards are not having this
Electronics Forum | Mon Mar 30 07:41:06 EST 1998 | Earl Moon
| Hi, | We have encountered de-wetting issues with gold plated components( SMT LEDs ). | The problem comes and go and we yet to locate the root cause ( process, component or solder paste etc ). | The rest of the components on the boards are not havi
Electronics Forum | Mon Mar 30 12:55:16 EST 1998 | Justin Medernach
| Hi, | We have encountered de-wetting issues with gold plated components( SMT LEDs ). | The problem comes and go and we yet to locate the root cause ( process, component or solder paste etc ). | The rest of the components on the boards are not havi
Electronics Forum | Thu Jun 08 01:46:00 EDT 2023 | camilleyang3
To prevent BGA (Ball Grid Array) issues related to SMT (Surface Mount Technology) solder resist when fabricating a PCBA (Printed Circuit Board Assembly), you can follow these guidelines: Design considerations: Ensure proper spacing between BGA pads
Electronics Forum | Thu Sep 03 15:43:18 EDT 1998 | Tim Flanagan
I need advice for locating 23 Gull wing LED's (all in a straight line) in the x,y, and z axis for a SMT PCB. It is a Hewlett Packard LED (P/N HMLA-QH00-01). The application uses a CCD to detect the position of a ball which floats in a resevior for
Electronics Forum | Fri Sep 04 09:33:40 EDT 1998 | Stefan W.
| I need advice for locating 23 Gull wing LED's (all in a straight line) in the x,y, and z axis for a SMT PCB. It is a Hewlett Packard LED (P/N HMLA-QH00-01). The application uses a CCD to detect the position of a ball which floats in a resevior fo
Electronics Forum | Wed Feb 07 21:56:00 EST 2001 | davef
Every critter out there with large incisors adapted for gnawing and nibbling has a different theory of solder ball formation. [My theory: It�s punishment for using NC fluxes. Stand and deliver. My solder balls end-up in the gross filter connected
Electronics Forum | Fri Jul 08 13:09:25 EDT 2011 | joekirin
Thanks for all the input guys! After trying to figure this out in our smt process, we have discovered that the board house did not meet the required pad width for the fine pitched ICs when making the bare boards. Our stencil was cut out to fit the p
Electronics Forum | Mon Dec 02 16:19:11 EST 2002 | slthomas
Unfortunately it's nc or we'd be worrying about this on the fly. Non-contact is defintely and issue....this is an 18"x9" board with 1500 bottom side SMT parts that are scattered among the through-hole and vice-versa. We're currently using 7 hold-
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