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Old 21st October 2007, 02:58 PM   #1
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Default Fairchild Semi Mosfets

Hi,

I am in need of some mosfets for simple switching purposes (no more than 1A) and I found some FQP50N06 from fairchild semiconductors. They are a lot cheaper than IR counterparts in Farnell so I am seriously considering them.

Has anyone have any nightmares in using Fairchild semicons? Any comments would be very helpful.

Thanks!
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Old 21st October 2007, 04:00 PM   #2
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Companies as RCA, and also Fairchild, were at the forefront of MOSFET development.
A cheaper part not automatically is a worse device, sometimes the more affordable product is on top.
Bigger isn't always best, there's nothing wrong with semis of manufacturers as Fairchild and Intersil.
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Old 21st October 2007, 04:26 PM   #3
walkura is offline walkura  Poland
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I used this mosfet a lot at my work as well for low frequency & upto 60 Khz purposes .
My opinion about them is good .
With the 50n06 i builded (modified sinus) inverters ,small switchers (400 watt) etc. etc.
(my chef once bought a 1000 orso ,we just had a big supply and used it for more or less anything)
My advice would be to go for it .
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Old 22nd October 2007, 07:38 AM   #4
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Good to hear a lot of good things about FS, I was cross referencing some fets from IR and the price is about 4-5 times more. As it is the 50N06 is more than enough for my needs.

Thanks
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Old 22nd October 2007, 07:46 AM   #5
Eva is offline Eva  Spain
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If you are going to switch only 1A, you may find that a 50A devide exhibits too high capacitances resulting in poor efficiency, unless your switching frequency is very low or your or you are planning to use it as an on/off power switch.

Anyway, for non-critical applications go to the lower cost, and for critical applications the datasheet usually tells much more than the price about which devices are suitable.
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Old 22nd October 2007, 08:12 AM   #6
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I'll just be switching DC, so no problem in the frequency. I did checked both FS and IR fet datasheets and they both are more than adequate for my application although the FS has a bit higher Rds but that won't hurt.

I was just a bit worried about the price difference since I haven't used FS parts before.
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Old 22nd October 2007, 08:54 AM   #7
Nordic is offline Nordic  South Africa
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My one supplier also swears by Fairchild... he said they get the least comebacks/complaints on those... I was pretty sceptical at first, but I can't say I have ever had a Fairchild misbehave.
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Old 22nd October 2007, 10:18 AM   #8
x-pro is offline x-pro  United Kingdom
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I've used different MOSFETs from Fairchild extensively, starting from output devices in Creek Audio amplifiers (from about 1999 they use only Fairchild) and for switching purposes in my current job. It is a good supplier, I would use their transistors without hesitation, and prices are usually good too.

Cheers

Alex
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Old 22nd October 2007, 12:55 PM   #9
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Quote:
Originally posted by Nordic
My one supplier also swears by Fairchild... he said they get the least comebacks/complaints on those... I was pretty sceptical at first, but I can't say I have ever had a Fairchild misbehave.


Quote:
Originally posted by x-pro
I've used different MOSFETs from Fairchild extensively, starting from output devices in Creek Audio amplifiers (from about 1999 they use only Fairchild) and for switching purposes in my current job. It is a good supplier, I would use their transistors without hesitation, and prices are usually good too.

Cheers

Alex
These statements, along with the other ones are very encouraging. And to come from those who actually designed and build using these devices is already enough reason for me to trust FS.

That's it then, Fairchild it is.

Many thanks to all!

PS: I've ordered Fairchild's PN100 and PN200 small signal transistors and for their category, they are much cheaper than those coming from other manufacturers.
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