IC product lifetime as function of junction temperature
If an IC is rated for an absolute maximum junction temperature of say 170 Celsius, obviously it is not recommended to operate there - but how drastically is product lifetime impacted if we are close, say operating at junction temperature of 160. How severely does the IC lifetime get shortened as we get closer to the maximum junction temperature ?
integrated-circuit thermal
asked Nov 23 '18 at 23:10
VanGoVanGo
429415
add a comment |
If an IC is rated for an absolute maximum junction temperature of say 170 Celsius, obviously it is not recommended to operate there - but how drastically is product lifetime impacted if we are close, say operating at junction temperature of 160. How severely does the IC lifetime get shortened as we get closer to the maximum junction temperature ?
integrated-circuit thermal
asked Nov 23 '18 at 23:10
VanGoVanGo
429415
add a comment |
If an IC is rated for an absolute maximum junction temperature of say 170 Celsius, obviously it is not recommended to operate there - but how drastically is product lifetime impacted if we are close, say operating at junction temperature of 160. How severely does the IC lifetime get shortened as we get closer to the maximum junction temperature ?
integrated-circuit thermal
asked Nov 23 '18 at 23:10
VanGoVanGo
429415
If an IC is rated for an absolute maximum junction temperature of say 170 Celsius, obviously it is not recommended to operate there - but how drastically is product lifetime impacted if we are close, say operating at junction temperature of 160. How severely does the IC lifetime get shortened as we get closer to the maximum junction temperature ?
integrated-circuit thermal
integrated-circuit thermal
asked Nov 23 '18 at 23:10
VanGoVanGo
429415
asked Nov 23 '18 at 23:10
VanGoVanGo
429415
asked Nov 23 '18 at 23:10
VanGoVanGo
429415
asked Nov 23 '18 at 23:10
VanGoVanGo
429415
asked Nov 23 '18 at 23:10
VanGoVanGo
429415
429415
add a comment |
add a comment |
1 Answer
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There are two rules of thumb when it comes to premature aging of electronics and temperature:
Every 10°C above 25°C halves its life
Every 15°C above 25°C halves its life.
The 10°C is derived from a certain application of Arrhenius' equation
$ AF = e^{ frac{E_a}{k}}(frac{1}{T_{use}}- frac{1}{T_{test}}) $
The issue with this is the 10°C result was a very broad interpretation of the empirical results (no consideration was given to other failure modes).
MIL-HDBK-217 took into account field data and concluded that 15°C is a figure more applicable to practical usage
https://www.electronics-cooling.com/2017/08/10c-increase-temperature-really-reduce-life-electronics-half/
answered Nov 23 '18 at 23:22
JonRBJonRB
13.4k22040
I think thatEvery 10°C above 25°C halves its lifeis related to chemistry.
– Harry Svensson
Nov 24 '18 at 11:27
I agree, this was then broadly applied. I have been looking into this recently wrt uprating. The problem is the mail is out of date
– JonRB
Nov 24 '18 at 13:16
1
And to just put a number to it. $2^{frac{160-25}{15}}=512$. That means, if the device has a lifetime of 512 years at 25° C, then it will have a lifetime of 1 year at 160° C.
– Harry Svensson
Nov 25 '18 at 2:49
add a comment |
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1 Answer
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There are two rules of thumb when it comes to premature aging of electronics and temperature:
Every 10°C above 25°C halves its life
Every 15°C above 25°C halves its life.
The 10°C is derived from a certain application of Arrhenius' equation
$ AF = e^{ frac{E_a}{k}}(frac{1}{T_{use}}- frac{1}{T_{test}}) $
The issue with this is the 10°C result was a very broad interpretation of the empirical results (no consideration was given to other failure modes).
MIL-HDBK-217 took into account field data and concluded that 15°C is a figure more applicable to practical usage
https://www.electronics-cooling.com/2017/08/10c-increase-temperature-really-reduce-life-electronics-half/
answered Nov 23 '18 at 23:22
JonRBJonRB
13.4k22040
I think thatEvery 10°C above 25°C halves its lifeis related to chemistry.
– Harry Svensson
Nov 24 '18 at 11:27
I agree, this was then broadly applied. I have been looking into this recently wrt uprating. The problem is the mail is out of date
– JonRB
Nov 24 '18 at 13:16
1
And to just put a number to it. $2^{frac{160-25}{15}}=512$. That means, if the device has a lifetime of 512 years at 25° C, then it will have a lifetime of 1 year at 160° C.
– Harry Svensson
Nov 25 '18 at 2:49
add a comment |
There are two rules of thumb when it comes to premature aging of electronics and temperature:
Every 10°C above 25°C halves its life
Every 15°C above 25°C halves its life.
The 10°C is derived from a certain application of Arrhenius' equation
$ AF = e^{ frac{E_a}{k}}(frac{1}{T_{use}}- frac{1}{T_{test}}) $
The issue with this is the 10°C result was a very broad interpretation of the empirical results (no consideration was given to other failure modes).
MIL-HDBK-217 took into account field data and concluded that 15°C is a figure more applicable to practical usage
https://www.electronics-cooling.com/2017/08/10c-increase-temperature-really-reduce-life-electronics-half/
answered Nov 23 '18 at 23:22
JonRBJonRB
13.4k22040
I think thatEvery 10°C above 25°C halves its lifeis related to chemistry.
– Harry Svensson
Nov 24 '18 at 11:27
I agree, this was then broadly applied. I have been looking into this recently wrt uprating. The problem is the mail is out of date
– JonRB
Nov 24 '18 at 13:16
1
And to just put a number to it. $2^{frac{160-25}{15}}=512$. That means, if the device has a lifetime of 512 years at 25° C, then it will have a lifetime of 1 year at 160° C.
– Harry Svensson
Nov 25 '18 at 2:49
add a comment |
There are two rules of thumb when it comes to premature aging of electronics and temperature:
Every 10°C above 25°C halves its life
Every 15°C above 25°C halves its life.
The 10°C is derived from a certain application of Arrhenius' equation
$ AF = e^{ frac{E_a}{k}}(frac{1}{T_{use}}- frac{1}{T_{test}}) $
The issue with this is the 10°C result was a very broad interpretation of the empirical results (no consideration was given to other failure modes).
MIL-HDBK-217 took into account field data and concluded that 15°C is a figure more applicable to practical usage
https://www.electronics-cooling.com/2017/08/10c-increase-temperature-really-reduce-life-electronics-half/
answered Nov 23 '18 at 23:22
JonRBJonRB
13.4k22040
There are two rules of thumb when it comes to premature aging of electronics and temperature:
Every 10°C above 25°C halves its life
Every 15°C above 25°C halves its life.
The 10°C is derived from a certain application of Arrhenius' equation
$ AF = e^{ frac{E_a}{k}}(frac{1}{T_{use}}- frac{1}{T_{test}}) $
The issue with this is the 10°C result was a very broad interpretation of the empirical results (no consideration was given to other failure modes).
MIL-HDBK-217 took into account field data and concluded that 15°C is a figure more applicable to practical usage
https://www.electronics-cooling.com/2017/08/10c-increase-temperature-really-reduce-life-electronics-half/
answered Nov 23 '18 at 23:22
JonRBJonRB
13.4k22040
edited Nov 23 '18 at 23:47
answered Nov 23 '18 at 23:22
JonRBJonRB
13.4k22040
answered Nov 23 '18 at 23:22
JonRBJonRB
13.4k22040
answered Nov 23 '18 at 23:22
JonRBJonRB
13.4k22040
13.4k22040
I think thatEvery 10°C above 25°C halves its lifeis related to chemistry.
– Harry Svensson
Nov 24 '18 at 11:27
I agree, this was then broadly applied. I have been looking into this recently wrt uprating. The problem is the mail is out of date
– JonRB
Nov 24 '18 at 13:16
1
And to just put a number to it. $2^{frac{160-25}{15}}=512$. That means, if the device has a lifetime of 512 years at 25° C, then it will have a lifetime of 1 year at 160° C.
– Harry Svensson
Nov 25 '18 at 2:49
add a comment |
I think thatEvery 10°C above 25°C halves its lifeis related to chemistry.
– Harry Svensson
Nov 24 '18 at 11:27
I agree, this was then broadly applied. I have been looking into this recently wrt uprating. The problem is the mail is out of date
– JonRB
Nov 24 '18 at 13:16
1
And to just put a number to it. $2^{frac{160-25}{15}}=512$. That means, if the device has a lifetime of 512 years at 25° C, then it will have a lifetime of 1 year at 160° C.
– Harry Svensson
Nov 25 '18 at 2:49
I think that
Every 10°C above 25°C halves its life is related to chemistry.– Harry Svensson
Nov 24 '18 at 11:27
I think that
Every 10°C above 25°C halves its life is related to chemistry.– Harry Svensson
Nov 24 '18 at 11:27
I agree, this was then broadly applied. I have been looking into this recently wrt uprating. The problem is the mail is out of date
– JonRB
Nov 24 '18 at 13:16
I agree, this was then broadly applied. I have been looking into this recently wrt uprating. The problem is the mail is out of date
– JonRB
Nov 24 '18 at 13:16
1
1
And to just put a number to it. $2^{frac{160-25}{15}}=512$. That means, if the device has a lifetime of 512 years at 25° C, then it will have a lifetime of 1 year at 160° C.
– Harry Svensson
Nov 25 '18 at 2:49
And to just put a number to it. $2^{frac{160-25}{15}}=512$. That means, if the device has a lifetime of 512 years at 25° C, then it will have a lifetime of 1 year at 160° C.
– Harry Svensson
Nov 25 '18 at 2:49
add a comment |
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