T
treez
Guest
Hello,
We have the following waveform in the STD1NK80Z FET (DPAK). It recurs every 10ms as shown.
We need to know if this violates the SOA.
To me, these pulses equate to repetitive pulses of [45V and 430mA and 650us long].
How from the datasheet can we tell that this is acceptable?
The SOA graph on page 4 shows what’s acceptable for a “single pulse”……..but how are we supposed to know what’s ok for our pulse train?
Also, the SOA graph on page 4 says “Tj=150degC and Tc = 25degC”..
What does this mean?......surely it’s the junction temperature, Tj, that is the significant parameter, so why do they bother to specify that the case temperature, Tc, is at 25degc?
STD1NK80Z datasheet:
https://www.st.com/resource/en/datasheet/CD00058073.pdf
We have the following waveform in the STD1NK80Z FET (DPAK). It recurs every 10ms as shown.
We need to know if this violates the SOA.
To me, these pulses equate to repetitive pulses of [45V and 430mA and 650us long].
How from the datasheet can we tell that this is acceptable?
The SOA graph on page 4 shows what’s acceptable for a “single pulse”……..but how are we supposed to know what’s ok for our pulse train?
Also, the SOA graph on page 4 says “Tj=150degC and Tc = 25degC”..
What does this mean?......surely it’s the junction temperature, Tj, that is the significant parameter, so why do they bother to specify that the case temperature, Tc, is at 25degc?
STD1NK80Z datasheet:
https://www.st.com/resource/en/datasheet/CD00058073.pdf