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IRFPA Transistor Datasheet, IRFPA Equivalent, PDF Data Sheets. MOSFET. Parameters and Characteristics. Electronic Component Catalog. SRev. A, Jun 1. Power MOSFET. IRFPA, SiHFPA. Vishay Siliconix. FEATURES. • Low Gate Charge Qg Results in. Vishay IRFPA MOSFET are available at Mouser Electronics. Mouser offers inventory, pricing, & datasheets for Vishay IRFPA MOSFET.

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IRFP450A Datasheet PDF

As Tony points out, there will usually be some other datxsheet that changes along the way. By continuing to use this site, you are consenting to our use of cookies. If the case is at 25C, the junction is at 94C. You need to know what affect other parameters may have on your circuit.

I am assuming these are too light for the duty they are trying to perform and would like to try and replace them with heavier Mosfets. Electrolytic caps are a prime suspect.

That’s way too low as this power supply is powered by VAC which is fed through a bridge rectifier, then filtered with an uF V capacitor then fed to the Mosfets through the SMPS transformer. One of the pair of Otherwise you’ll need to resort to cold water or refrigerated cooling. Misterbenn Active Member Mar 1, They are mounted on a large aluminum heatsink and the unit also has a cooling irp450a.


If the impedance gain or resistance gain is too high, you need more stages of MOSFET buffering to prevent overloading the gate resistors due to Qgs charge switch losses and switch frequency. Pins 11 and 14 are the 2 outputs of the chip. There is also a visible crack in the case of the same Mosfet. Take a look at this one.

IRFPA MOSFET Datasheet pdf – Equivalent. Cross Reference Search

It comes down to the fact that the current rating of most catasheet is a calculated number irfp50a to what current will put the junction temperature at it’s failure point when the case is at 25C.

Let’s look at a few items from the datasheet. Datasheets, Manuals or Parts. Electro Tech is an online community with overmembers who enjoy talking about and building electronic circuits, projects and gadgets. Thread starter Ken1 Start date Feb 28, Doable in a cryogenics lab, but not really a practical value for most real world applications. So, it will only carry 14 amps if you can keep the case at 25C while it is pushing out 78 watts of heat.

The battery charge may not have intelligent soft start and overstress the charger hooking up to a dead battery. Articles Top Articles Search resources. Ken1 Member Mar 1, Forums New posts Search forums. So when carrying 14 amps, it will be dissipating about 78 watts of heat.


IRFP450A MOSFET. Datasheet pdf. Equivalent

To participate you need to register. The unit is relatively new and hasn’t seen much use. The unit belongs to a neighbour and he said it just quit working; he doesn’t know if it was running hot before it quit.

Don’t forget to check the caps. Replacing a 4 pin datasheft inductor with a 2 pin Started by gkmaia Yesterday at I am using four amp mosfets. Nice power supply by the way. Often the input FETs are just the weak link and something else is the real culprit. I am assuming these are too light for the duty. This means that the the junction is. Ken1 Member Feb 28, One important fact jrfp450a everyone need to be aware of when choosing mosfets, is that the current rating has a fine print disclaimer that causes problems if not taken into account.

Not as easy as it sounds.

You must log in or register to reply here. We need to recalculate everything again based on the new info.

It seems this “entry level” charger” has very little margin before exceeding the component limits.