Fun decap pix from a cell phone camera
in [Design]
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From: Phil Hobbs on 14 Apr 2010 12:02 Decapped InGaAs APD/TIA device, ex Terabeam, from eBay: http://electrooptical.net/www/sed/TerabeamCD3109_decap2.jpg I don't have a microscope, so I took this using a 12.5 mm focal length achromat lens attached to my cell phone with some gycol pthalate wax--it came out pretty well! Cheers Phil Hobbs -- Dr Philip C D Hobbs Principal ElectroOptical Innovations 55 Orchard Rd Briarcliff Manor NY 10510 845-480-2058 hobbs at electrooptical dot net http://electrooptical.net
From: linnix on 14 Apr 2010 12:15 On Apr 14, 9:02 am, Phil Hobbs <pcdhSpamMeSensel...(a)electrooptical.net> wrote: > Decapped InGaAs APD/TIA device, ex Terabeam, from eBay: > > http://electrooptical.net/www/sed/TerabeamCD3109_decap2.jpg > > I don't have a microscope, so I took this using a 12.5 mm focal length > achromat lens attached to my cell phone with some gycol pthalate wax--it > came out pretty well! What do you use to decap the plastic, without damaging the dice? I am thinking about moving some dice to new PCBs.
From: Phil Hobbs on 14 Apr 2010 12:16 On 4/14/2010 12:15 PM, linnix wrote: > On Apr 14, 9:02 am, Phil Hobbs > <pcdhSpamMeSensel...(a)electrooptical.net> wrote: >> Decapped InGaAs APD/TIA device, ex Terabeam, from eBay: >> >> http://electrooptical.net/www/sed/TerabeamCD3109_decap2.jpg >> >> I don't have a microscope, so I took this using a 12.5 mm focal length >> achromat lens attached to my cell phone with some gycol pthalate wax--it >> came out pretty well! > > What do you use to decap the plastic, without damaging the dice? I am > thinking about moving some dice to new PCBs. A file. It's a metal can package with a lens. Cheers Phil Hobbs -- Dr Philip C D Hobbs Principal ElectroOptical Innovations 55 Orchard Rd Briarcliff Manor NY 10510 845-480-2058 hobbs at electrooptical dot net http://electrooptical.net
From: John Larkin on 14 Apr 2010 12:18 On Wed, 14 Apr 2010 12:02:24 -0400, Phil Hobbs <pcdhSpamMeSenseless(a)electrooptical.net> wrote: >Decapped InGaAs APD/TIA device, ex Terabeam, from eBay: > >http://electrooptical.net/www/sed/TerabeamCD3109_decap2.jpg > >I don't have a microscope, so I took this using a 12.5 mm focal length >achromat lens attached to my cell phone with some gycol pthalate wax--it >came out pretty well! > >Cheers > >Phil Hobbs Nice photo. It looks like the APD mounting platform is way off-center, but the APD itself is just about in the center of the pin circle. Which is why it's practically falling off the mount. Are the various little wirebonded gadgets capacitors? There are some cool video microscopes in the $50-250 range. John
From: Phil Hobbs on 14 Apr 2010 12:26
On 4/14/2010 12:18 PM, John Larkin wrote: > On Wed, 14 Apr 2010 12:02:24 -0400, Phil Hobbs > <pcdhSpamMeSenseless(a)electrooptical.net> wrote: > >> Decapped InGaAs APD/TIA device, ex Terabeam, from eBay: >> >> http://electrooptical.net/www/sed/TerabeamCD3109_decap2.jpg >> >> I don't have a microscope, so I took this using a 12.5 mm focal length >> achromat lens attached to my cell phone with some gycol pthalate wax--it >> came out pretty well! >> >> Cheers >> >> Phil Hobbs > > Nice photo. It looks like the APD mounting platform is way off-center, > but the APD itself is just about in the center of the pin circle. > Which is why it's practically falling off the mount. > > Are the various little wirebonded gadgets capacitors? > > There are some cool video microscopes in the $50-250 range. > > John > Pin 4 is a thermistor, the rest are caps. I looked at another model, and the APD mount is off centre the same way. Cheers Phil Hobbs -- Dr Philip C D Hobbs Principal ElectroOptical Innovations 55 Orchard Rd Briarcliff Manor NY 10510 845-480-2058 hobbs at electrooptical dot net http://electrooptical.net |