MIL-217F

[cjrheem]

New to this whole MIL-217F and reliability prediction, just have been assigned to determine the failure rate of a module. Was wondering whether anyone has an advise on how to determine the number of gates and/or transistors from a datasheet. Have been looking multiple datasheet for different microcircuits and haven't seen any information about the number of gates and/or transistors in datasheet. Any suggestion/advice/recommendation/best-practice when trying to determine the failure rate using section 5.1 in MIL-217F-N2. Thank.

 

[Delta Prime]

. Was wondering whether anyone has an advise on how to determine the number of gates and/or transistors from a datasheet

You are just going to have to count each single transistor in the schematic diagram. haha!
It's called grunt work welcome to the club. I know you're pain!
So drop down and give me 20 push-ups maggot!
but there's a way to ease your pain don't show this to anybody else you got to promise.

 

[Delta Prime]

just have been assigned to determine the failure rate of a module

Well it would help if you provide the datasheet for that particular module.

Have been looking multiple datasheet for different microcircuits and haven't seen any information about the number of gates and/or transistors in datasheet

show me and I'll show you. When I was assigned to do the same thing. They did it as a "right of passage" Datasheets should be second nature to you.You are going to drown in Mill specs if you don't know how to read a datasheet . So I have to ask. I'm not trying to beat you up.Can you read schematics? Because you should have volunteered everything up front.

 

[Harald Kapp]

Using the number of gates or transistors is only a proxy for the reliability based on (often not very up-to-date) estimations. If available, use real MTBF data (FIT rates) for the components.
Reliability data is afaik not part of the datasheet. You can often find it in a separate document on the manufacturer's website. If you can't find it, you'll have to ask for it.

 

[cjrheem]

That was what I was really wondering about when asking how to determine the # of gates/transistors from a datasheet. I wasn't sure if I was missing something from the datasheet. Like if someone where to look up for a microcircuit component (P/N ADCMP380-1ACBZ-RL7) and check the datasheet for that specific component, where would I look in the datasheet to find out the # of gates/transistors so as to C1 / C2 value from MIL-217. But as Delta Prime commented, it could be that datasheet isn't a second-nature to me. I do appreciate the comment/response. If you have any other advise/suggestion/best-practice so as to improve my ability to better understand how to perform reliability prediction based on MIL-217, it would be most welcome. Thank you.

 

[Bluejets]

just have been assigned to determine the failure rate of a module

What, not your expertise?.......seems an odd question to ask someone who has no idea.
Oh, ....forgot to study that part.

 

[Delta Prime]

If you have any other advise/suggestion/best-practice so as to improve my ability to better understand how to perform reliability prediction based on MIL-217

Yeah bring your Superior who assigned you to determine the failure rate of module you will see best-practice in action.