Can I use 9540N with IRF540?

[chipper]

Hi, I bought a pair of IRF9540's but they are N version. I bought them because I was desperate to get my one and only amp working already. But on the listing for the fets I purchased said 'IRF9540' lead me to be thinking great non N version fet! Well I received them today not what I was looking for.

Anyway is it possible I can use these while the rest of the fets are just IRF540 & IRF9540? In the channel I'm repairing I already have two new IRF540's jisheng need some P channels in to complete it.

 

[chipper]

Here's what I'm talking about.

 

[chipper]

My amp I'm working on it's a Punch 125.2

 

[S Merlington]

Some people say they have used the N version in rockford amps with no problems ..

Every time I've used the N versions I've had problems and they blew within 20 mins..

Perry also suggests not using the N versions in rockford amps

 

[chipper]

Some people say they have used the N version in rockford amps with no problems ..

Every time I've used the N versions I've had problems and they blew within 20 mins..

Perry also suggests not using the N versions in rockford amps

I'm going to try return these I paid a good amount for these I'm a kinda disapointed the seller didn't say what they were.

 

[tiomilo]

I have issues too with "n" versions in Rockford amps. Ask for IRF9540PBF by vishay. Those works like charm.

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[chipper]

I have issues too with "n" versions in Rockford amps. Ask for IRF9540PBF by vishay. Those works like charm.

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What happens if you use these in rockford amps? Like does the channel just fail out of no where?

 

[tiomilo]

It would work for some minutes. Then: amp consumption increase and blown the mosfets. In some cases blown some resistors and smd transistors. Even if you carefully adjust the bias pot.

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[tiomilo]

Internal mosfets diodes on N versions are different. Look the data sheets.

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[RockfordFIx]

I have used the 9540n and 540n in every rockford amp with no problems except for the older models like dsm, ix, and the 150hd.

 

[seankane]

I have used them in the past a lot as well.

The only time I experienced a problem was when I mixed them like you did on this amp.

As long as I used the 540N and the 9540N I never had any problems.

 

[tiomilo]

All are right forgot to mention the issues become when combined "N" versions with common ones.

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