mini acceleration switch prefer SMT
mini acceleration switch prefer SMT
(OP)
I urgently need to locate a mini acceleration switch for my application. It will be high volume, 1-5 million in quantity or better when in final production. It have to be really TINY and light weight. Packaging is not as critical since we do epoxy coated the entire unit. The current unit we use used a reed switch. Due to difficult situation, we cannot use a magnet, and we truly believe the only other way to improve upon and maintain the functionality of the application is to use acceleration switch that can detect reliably the acceleration (150 fps). The reed switch we current use is SRC UM23XX. Any one who have info or idea please advice ASAP.





RE: mini acceleration switch prefer SMT
What supply voltage do you have available? Is this acceleration in one direction? Or more axis? What is "tiny"? Like a transistor - or smaller? Or larger?
Do you need a logic signal or a switch that can handle some power? How long is the acceleration period? Some detectors react in microseconds while others need milliseconds. Shal the switch stay activated after acceleration limit is exceeded? Or shall it reset itself?
Gunnar Englund
www.gke.org
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100 % recycled posting: Electrons, ideas, finger-tips have been used over and over again...
RE: mini acceleration switch prefer SMT
Dan - Owner

http://www.Hi-TecDesigns.com
RE: mini acceleration switch prefer SMT
FYI, Star-M pdf link below
RE: mini acceleration switch prefer SMT
A switch with a mass would be very simple, but it certainly won't be tiny.
Is this a one-time trigger? Or need to be used many times?
RE: mini acceleration switch prefer SMT
RE: mini acceleration switch prefer SMT
http://www.freepatentsonline.com/7274118.html
RE: mini acceleration switch prefer SMT
http://www.inertiaswitch.com/pcbminiature.html
RE: mini acceleration switch prefer SMT
Madcow. That is similar, but I need it to be 25% size of it. It is way too big for what I need. It cannot exceed 1.4 mm in height.
RE: mini acceleration switch prefer SMT
Do you need 1/4 of a TO-18 size? I am afraid you will have a very tough time finding that. Especially if you do not want any electronics involved.
You may be able to do something in a PCB - directly from glass-epoxy and Cu. But I doubt if you can get any reliability from such a construct.
Gunnar Englund
www.gke.org
--------------------------------------
100 % recycled posting: Electrons, ideas, finger-tips have been used over and over again...
RE: mini acceleration switch prefer SMT
RE: mini acceleration switch prefer SMT
Dan - Owner

http://www.Hi-TecDesigns.com
RE: mini acceleration switch prefer SMT
RE: mini acceleration switch prefer SMT
Does firenock = tinyaccel? I'm confused.
Keith Cress
Flamin Systems, Inc.- http://www.flaminsystems.com
RE: mini acceleration switch prefer SMT
RE: mini acceleration switch prefer SMT
Dan - Owner

http://www.Hi-TecDesigns.com
RE: mini acceleration switch prefer SMT
"suits motion-activated user interfaces", "wake-up feature"
5 x 3 x 0.9-mm LGA-14
$3 (10,000)
www.st.com
Source: Mentioned in EDN Oct 25, 2007 on page 84.
RE: mini acceleration switch prefer SMT
Dan - Owner

http://www.Hi-TecDesigns.com
RE: mini acceleration switch prefer SMT
RE: mini acceleration switch prefer SMT
The volume is not small as you can see. COMUS ASLS-2 is reasonable small, but I prefer it to be smaller. Any suggestions?
RE: mini acceleration switch prefer SMT
Dan - Owner

http://www.Hi-TecDesigns.com
RE: mini acceleration switch prefer SMT
Dan that is just the start. The down payment. I would expect the price to be about 5-8x that.
Keith Cress
Flamin Systems, Inc.- http://www.flaminsystems.com
RE: mini acceleration switch prefer SMT
Designing and manufacturing highly-minaturized high-tech devices is relatively straightforward compared with sourcing suitable highly-minaturized components.
RE: mini acceleration switch prefer SMT
Keith Cress
Flamin Systems, Inc.- http://www.flaminsystems.com
RE: mini acceleration switch prefer SMT
RE: mini acceleration switch prefer SMT
RE: mini acceleration switch prefer SMT
many thank
RE: mini acceleration switch prefer SMT
ht
They sell packaged accelerometers and piezo material that you could adapt to your own needs.
Walt
RE: mini acceleration switch prefer SMT
RE: mini acceleration switch prefer SMT
h
"By utilizing the thin film deposition technique, we fabricated one of the world smallest milli-g resolution, packaged accelerometer. The size of the whole packaged accelerometer is 500x500x300 µm, giving the weight around 200 nano-gram."
http://
Low cost/OEM applications
High output efficiency
Light weight (85 mg)
For SMT installation
http://www.silicondesigns.com/Prod.html#SMTaccels
» Hermetically Sealed, 20 Pin LCC or J-Lead
» Small Size 0.350"sq. x 0.10"
» Light Weight: 0.62 g (0.68g J-Lead)
» +5V Operation
Walt
RE: mini acceleration switch prefer SMT
RE: mini acceleration switch prefer SMT
Dan - Owner

http://www.Hi-TecDesigns.com
RE: mini acceleration switch prefer SMT