Wire bonding repair services in Europe??? - Page 1
Forum section: electronics / repair

author: ckambiselis
author_rank: Regular Contributor
timestamp: August 12, 2016, 05:48:45 pm
content: Hello,Does anyone know of a company/university in Europe that provides wire bonding repair services, I have a CMOS image sensor I was modifying to mono and a tool slipped and cut 3 gold wires connecting the die to the package.ps. If the company/university is in Finland that would be even better.ThanksOscar

author: plazma
author_rank: Frequent Contributor
timestamp: August 12, 2016, 09:19:08 pm
content: IIRC there is one in Oulu, Finland. I'll check and reply if I find it.

author: wasyoungonce
author_rank: Frequent Contributor
timestamp: August 12, 2016, 11:18:56 pm
content: Hi Oscar which sensor you using?A little OT...but I understand what your doing. You have any friends in the military in electronics...Avionics micro min? Even potting the bond wires can cause them to break (shrinkage of some compounds).We are following the project Cam86 Astro camera using ICX453AQ oneshot but intend to take the coverslip off and make a few mono. Originally started as Cam84 (actually started earlier on other cameras) by Vakulenko and Hippie but has morphed into further iterations of design.http://www.astroclub.kiev.ua/forum/index.php?topic=28929.1780http://www.iceinspace.com.au/forum/showthread.php?t=146493http://www.cloudynights.com/topic/497530-diy-astro-ccd-16-bit-color-6mpx-camera/?hl=%20cam84http://astroccd.org/2015/04/cam84/

author: edpalmer42
author_rank: Super Contributor
timestamp: August 13, 2016, 03:14:40 am
content: Luis Cupido is really into wire bonding. Don't know if he does repairs for others or not.http://www.qsl.net/ct1dmk/https://groups.yahoo.com/neo/groups/chip-hybrids/infoI think he's in Portugal.

author: ckambiselis
author_rank: Regular Contributor
timestamp: August 13, 2016, 10:27:38 am
content: Quote from: edpalmer42 on August 13, 2016, 03:14:40 amHe was also recommend to me by pm, I sent him an email yesterday.Quote from: plazma on August 12, 2016, 09:19:08 pmThat would be amazing!Quote from: wasyoungonce on August 12, 2016, 11:18:56 pmI'm using a Nikon D5100 sensor, the modification has been done herehttp://kuulapaa.com/home/astrophotography/index.html, I won't actually use any kind of potting since I have already cleaned the bayer filter from the sensor, I had made a "stencil" from polycarbonate that covered the gold wires, and I already have a new antireflective, high transmission optical glass ready to be placed.No friends in those areas.Quote from: blueskull on August 13, 2016, 03:22:59 amNot sure the exact size, but I can say that it is thinner than a human hair. I will see if I can't find anything in Europe and contact you.

author: Kalvin
author_rank: Super Contributor
timestamp: August 13, 2016, 11:18:54 am
content: I am not sure, but Vaisala and VTT had some IC manufacturing some years ago. Possibly some universities have precision equipment related to IC manufacturing/testing.

author: orin
author_rank: Frequent Contributor
timestamp: August 14, 2016, 05:54:25 am
content: Quote from: edpalmer42 on August 13, 2016, 03:14:40 amYes, he's in Portugal.He has done repairs for others in the past - depends on whether the repair is economically viable.He did some repair work for me, but wouldn't repair the same device again as far as I know. In terms of the cost of parts required and his overhead, it would be cheaper to buy a good used device.If he can and is willing to do the work, I can certainly recommend him.Orin.

author: ckambiselis
author_rank: Regular Contributor
timestamp: August 16, 2016, 04:04:35 pm
content: I was contacted by Luis Cupido and he might be able to help, he needed a high-res picture to check the damage and he will contact me again.So thank you edpalmer42 for the info.plazma if you find the company in Oulu that would also be great for future projects.

author: ckambiselis
author_rank: Regular Contributor
timestamp: August 21, 2016, 08:05:49 am
content: A few images for those interested and those who don't know what was this about.

author: firewalker
author_rank: Super Contributor
timestamp: August 21, 2016, 08:51:23 am
content: Can't someone use epoxy to cover the wire bonds before the operation?Alexander.

author: amyk
author_rank: Super Contributor
timestamp: August 21, 2016, 01:30:53 pm
content: I see what looks like die damage in the first image, near the pads with the missing bond wires.

author: ckambiselis
author_rank: Regular Contributor
timestamp: September 01, 2016, 07:57:52 pm
content: Quote from: amyk on August 21, 2016, 01:30:53 pmWhat you see is the layers of the Bayer Filter/microlenses removed and some leftovers on the sides, the layers were removed using a car paint polishing/repair cream, basically cream that has very fine abrasive/chemicals and an image sensor cleaning bud, you can find more info on the procedure here kuulapaa.com/home/astrophotography/nikond5100mod.html , I also have a timelapse video of it.

author: firewalker
author_rank: Super Contributor
timestamp: September 01, 2016, 08:08:09 pm
content: Were you able to repair it?Alexander.

author: ckambiselis
author_rank: Regular Contributor
timestamp: September 01, 2016, 08:08:47 pm
content: Quote from: firewalker on August 21, 2016, 08:51:23 amThe guy that made the instructions for the this sensor mod did use epoxy, but my mind was telling me that there might be some contraction of the epoxy during the curing process that might cut some of the wires anyway so I didn't apply any epoxy, although he has made this mod to many cameras with success. The wires where actually broken while I was removing the cover glass of the sensor, during the Bayer filter/microlens removal I didn't have any problem as I was taking it slowly and I also found an easier/safer way the protect the wires, I cut I polycarbonate the size of the original cover glass and then cut a window on the middle roughly the size of the active area of the sensor, some hot glue to the corners and no need to worry that much about the wires.

author: ckambiselis
author_rank: Regular Contributor
timestamp: September 01, 2016, 08:11:20 pm
content: Quote from: firewalker on September 01, 2016, 08:08:09 pmThe person that is going to make the repair for me is coming back from vacation in the next few days, and then I'm going to send it to him, he said he will most likely be able to repair it.

author: Bicurico
author_rank: Super Contributor
timestamp: September 01, 2016, 08:55:17 pm
content: Out of curiosity I just visited Luis Cupido's webpage.And I thought *I* was a mad amateur!!!He truly deserves my deepest respect: both at work (University) and hobby, he is really doing what he loves.@OP: Hope you get your sensor fixed. Was looking at the webpage with the mod and the pictures... Great stuff!Regards