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IRFZ BVDSS = 60 V. RDS(on) = Ω. ID = 50 A. ± . .. Obsolete. This datasheet contains the design specifications for. IRFZ44 Transistor Datasheet, IRFZ44 Equivalent, PDF Data Sheets. MOSFET. Parameters and Characteristics. Electronic Component Catalog. Advanced HEXFET® Power MOSFETs from International. Rectifier utilize advanced processing techniques to achieve extremely low.

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Tony EE rocketscientist 62k 2 21 Home Questions Tags Users Unanswered. However, I have tested it a lot at V and 1A. In hindsight, I should have added a couple of resisters upstream of the drain to lower the voltage across the mosfet. Seems to hold up well. This one failed with only 2.

Case temp does not go over 40C. It should probably tolerate a lot if the Vds is limited to only about 10V. Figure 1 and figure 2 describe the DC operations despite this measurement being made with a 20 us pulse: It was not even warm, maybe only at 35C or so.

Did you not understand my answer with Temp rise? I have tested it only for few seconds at this power.

IRFZ44, SiHFZ44 product information

Email Required, but never shown. Expecting reliability at any more than 30W even with excellent cooling is unrealistic. The continuous current is when the mosfet is fully on. Post as a guest Name. The electronic load does work badly smoothed 40V DC 3A. I have a large heatsink with a fan irrfz44 it.


On semi document on thermal instability Infineon document on thermal instability Ditto from Fairchild Nasa document explaining it Which figure? It is huge difference between 3A 40V and 3A 5V. Indraneel 1, 4 This isn’t some theoretical annoyance that doesn’t really happen. You have to work with power dissipation figures.

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Within about a milli second, a hot spot can develop in the hexfet and a localized temperature of over centigrade results and blows a hole in it before the feedback loop can respond. VGS must be greater than 4V to lower Ron. Otherwise, I may have to change it all to a 2N and make a mess. Sign up using Email and Password. Sign up or log in Sign up using Google. This mosfet will fail at above 2A at all voltages below 20V. The dc curve is a flat line at about 2A till 20V, iirfz44 falls sharply after that to mA at 40V.

So to answer my own question So that probably explains the missing dc line in the SOA curve. On semi document on thermal instability. Post Your Answer Discard By clicking “Post Your Answer”, you acknowledge that you have read our updated terms of serviceprivacy policy and cookie policyand that your datashheet use of the website is subject to these policies.


IRFZ44 Datasheet(PDF) – International Rectifier

Infineon document on thermal instability. By clicking “Post Your Answer”, you acknowledge that you have read our updated terms of serviceprivacy policy and cookie policyand that your continued use of the website is subject to these policies. Extrapolating the points where the mosfet worked and did not work the imaginary DC operation line does not give me a line parallel to the other lines at difference pulse widths. Added on APR Any idea what the max current might be at 30V and 40V so as not to cause damage?

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Yes, a MOSFET will dahasheet into thermal runaway if the gate-source voltage is below the zero-temperature-coefficient threshold. So, they too may in reality be curving downwards much more at higher voltages i.

Well, the mosfet died. At the time I did not understand the SOA curves.