Hi,Does anyone know how many g's (acceleration) a typical circuit board(surface mount if it matters) can withstand?Recently, a rep from the U.S. Military purchased a few of my MAVRIC boardsand mentioned that they will be used for the IMU (inertial measurementunit) on a CKEM (compact kinetic energy missile). Apparently thesemissiles go from 0 to Mach 6 in just a few thousand meters.I suspect they will be using my boards to prototype their software whilethey are in the process of developing their own custom boards to actuallyreside on the missiles themselves. But they did ask how many g's myboards could withstand. I don't have a clue - any ideas?-Brian

There are a lot of factors to consider. You'd have to have a lab test it forfind out for sure.Basically, the heavier an item is the more susceptable it is to G's.It depends on what they put on your boards, crystals, connectors, largeparts like voltage regulators, capacitors would likely fail beforethe surface mount parts. At really high G forces,even the SMT parts wouldpull loose from the board, usually pulling traces off the substrate as theylet go.I think it could do 50-100 g's face up, maybe more. But the crystals,connectors or wires going to the board would likely fail first.Unscientific methods,You can get 100's of G's of shock dropping the assembled board flat downonto a hard surface from 3-5 feet up. Components face down would not be ableto handle as many G's as face up.Put the board in something streamlined and drop it off a 500 foot tallbuilding onto the concrete below, that's good for maybe a 1000 g's or so.Choose a part and somehow attach something to it, clamp the board...

How many g's can a typical circuit board withstand?

Aug 02, 2003 Last reply: 3 years ago 44 Replies

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Airy R Bean 22 years ago

Grow up, OM

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dave Stanton 22 years ago

Bloody Hell ! can we have that in english .

Dave

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winston chu 3 years ago

hi robin

i need to submit a black box for acceleration centrifuge test at 15g for 60s. wondering how to proceed to survive the test. i am willing to pay for professional advice. pse revert. my contact : snipped-for-privacy@singnet.com.sg winston

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wilson196043 3 years ago

i like to hear from you the survivability of a black box tested at 15g for 60s.

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wilson196043 3 years ago

i need to send a black box for centrifuge acceleration test for 15g at 60s. You got any feel how severe is this?

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