How do I find out the rating of an SMD fuse?

[budm]

Re: How do I find out the rating of an SMD fuse?

I thought the fuse is blown, as I indicated, there is no standard for the letter indicating the Current rating as you can see from BOURNS and BUSSFUSE spec sheet.

[Dang]

Re: How do I find out the rating of an SMD fuse?

I thought the fuse is blown, as I indicated, there is no standard for the letter indicating the Current rating as you can see from BOURNS and BUSSFUSE spec sheet.

Yes, fuse is blown and yet to test as stated, thanks by the way.

[Kiriakos GR]

Re: How do I find out the rating of an SMD fuse?

rather than running down the guys on here for showing an interest,and willing to spend what THEY can afford,on test gear,so THEY can learn?.

Hey Zorro, take your plastic sword of 5$ and walk away from this topic.

The truth is that I had the feeling that you are incapable to accept any advice from the start.
Good luck in your sword fights with other Zorro.

[Kiriakos GR]

Re: How do I find out the rating of an SMD fuse?

I just want to know how to test my fuse . Thanks for the help guys, really much appreciated, Andy.

You are welcome mate.

[tom66]

Re: How do I find out the rating of an SMD fuse?

So you can't reply sensibly to either myself or multimeter, showing that you have little intention of reasonable discussion or willingness to understand our point of view.

[Kiriakos GR]

Re: How do I find out the rating of an SMD fuse?

You are not justified to have a point of view over subjects which are clearly documented by the ones who are at the top of the pyramid, which called as technical society.

Even me, the trained, the expert, I am following orders like a common soldier when it comes down to regulations and proper techniques about performing electrical measurements or components testing.

When possibly, one day, you will be trusted enough to design a system, even then your design will have to comply with the laws and regulations made by others.

In summary, when any one starts to recognize the hierarchy among the links of this technical chain of people, he gains a better understanding of the expectations which the others have for him.
And also he starts to argue less and to learn more by cooperating, and obey, and following any advice all the way as is, so to comply with the expectations of the team.

Your Boss expects from you one performance accordingly to your technical title, he does not give a shit about your feelings.

Therefore the older repair man is the only true alliance force to you, and their advices your only life jacket.

In this chain I am under the engineers, below me there is inexperienced but fully trained electrician, below him there is the trainee electrician, below the trainee electrician, is the fresh trainee electrician, which is good only to bring coffees and move around some of our tools as donkey ( the inexpensive ones).

Now it sounds complex to you, but in time you will get in the chain and you will see those things with your eyes.

[budm]

Re: How do I find out the rating of an SMD fuse?

Post 2: "One temporally bridge wire in the position of the fuse" now, THAT is a safe thing to do. An experience person will know what can be done and what not to be done when he understand what is in the circuits and know how it works and what to expect. Yes, I am very familiar with TuV, ETL, CSA, UL, FCC and lots of safety requirement that our company spend more millions of dollars every year to get our products to pass safety compliance requirement we before we send our products to consumers all over the world.

[tom66]

Re: How do I find out the rating of an SMD fuse?

Oh my god you have such a superiority complex. We still use 10 year old flukes and tek DSOs in the company I work at. Just cal them every year. Annual turnover >£1mn. I engineer stuff that works, well, most of the time it works, but it's no fun when it works first! No more work to do if it works first time...

You do not need new, or expensive equipment to do a job right UNLESS that equipment is required for one reason or another in that particular application.

You would be rightly foolish to measure precision voltage reference with anything short of calibrated bench meter or high accuracy DMM.

But you're telling us, that you could not measure a 12V output of a TV or computer PSU, and tell me that your Fluke would give you MORE USEFUL INFORMATION than a basic meter? BTW, an extra digit or 0.05% accuracy is of no use when everything past the 1st DP is pretty much random noise to you and me. At least, your power supply isn't calibrated to 0.05%!

For example I do admit the high resolution and bargraph of the '179 is very nice in some instances. However, I could still complete my diagnosis of a system given a DT830B... it'd just take longer and I'd be more likely to miss things now and then. So having a good meter is quite beneficial for saving time and money, though I'd argue there's limited pay off beyond £100 models.

Get off your high horse and get into the real world that you so claim to be at the top of and yet still work in a maintenance position, sorry, but that is funny.

[Kiriakos GR]

Re: How do I find out the rating of an SMD fuse?

For tiny SMD fuses usualy rated at 1A up to 3A, yes it is safe.
My hobby is to repair digital cameras ( photography) and a spesific Olympus profesional model was suffering from this problem of burning those SMD fuses when the camera was forgoten conected by the USB cable in to a computer.
There was no prediction in the firmware the camera to get in sleep mode, and by been turned on the batteries was getting discharged and the current were getting higher than what those fuses could handle.
Most people was calling this as "sudden death", by learning this detail because I actualy own this great camera (1000 EUR) , I did buy from eBay and restore back to life another three.

[Kiriakos GR]

Re: How do I find out the rating of an SMD fuse?

superiority complex.

When you will decide to get payed for your work, even your own superiority complex will fade away.

My advice ... You GET OFF my back, my horse win races because a trained jockey is driving it.

[budm]

Re: How do I find out the rating of an SMD fuse?

"For tiny SMD fuses usualy rated at 1A up to 3A, yes it is safe." So why are we talking about meter with high interrupting current rating must be used? Since it is safe to jump this fuse with a piece of wire but it is not good to use low price meter to check 1~3A of current? Can any one explain this to me? Just do what I suggested and get over it, measure it with the meter and report back what you find.
Start another thread if anyone of you are going to brag about what you know and what you do not know, what test equipment you have, how big your dick is, etc.
We are here to solve problem.

[Dang]

Re: How do I find out the rating of an SMD fuse?

Guys, as we can all see differing equipment is needed for different applications, a lot of which I will have to admit I don't understand, but it is quite obvious that in this instance, and I refer you back to my original question: How do I find out the rating of an SMD fuse? that my simple cheap Ebay throw away is perfectly fine and ample for the job. I'm just a part time hobbyist starting out really(two years) so at this moment in time I can't justify anything as a replacement above £20, and why would I even now when what I have still does a perfectly fine job @£2.59. None of us are above or below each other, we all have a common interest here, it's just some of us have managed to properly qualify in our chosen profession, others still getting there but we are ALL still learning, there's always something that will trip us up and make us think. This site, I have to say, is probably the best place for information regarding anything to do with Tv electronics, I don't know anywhere else where someone will walk you through a problem to hopefully find a resolve and for no real thanks, it's all unconditional. I've been helped a few times now and I have had a good success rate because of, this all thanks to you guys so I thank you all once again and may this site live on, it's the best, Andy.

[Kiriakos GR]

Re: How do I find out the rating of an SMD fuse?

"For tiny SMD fuses usualy rated at 1A up to 3A, yes it is safe." So why are we talking about meter with high interrupting current rating must be used? Since it is safe to jump this fuse with a piece of wire but it is not good to use low price meter to check 1~3A of current? Can any one explain this to me? Just do what I suggested and get over it, measure it with the meter and report back what you find.
Start another thread if anyone of you are going to brag about what you know and what you do not know, what test equipment you have, how big your dick is, etc.
We are here to solve problem.

The solution depends to whom this equitment under repair belong to.

a) If it is yours, you may put a blob of solder over the blown fuse and move on.

b) If it belongs to a customer of yours, you are obligated to perform an 100% unquestionably perfect repair.

c) The size of your dick, is not important in mind games for grownups.

[multimeter]

Re: How do I find out the rating of an SMD fuse?

The solution depends to whom this equitment under repair belong to.

a) If it is yours, you may put a blob of solder over the blown fuse and move on.

b) If it belongs to a customer of yours, you are obligated to perform an 100% unquestionably perfect repair.

c) The size of your dick, is not important in mind games for grownups.

"c) The size of your dick, is not important in mind games for grownups."

neither is the size of your head..

[ITTSB]

Re: How do I find out the rating of an SMD fuse?

None of us are above or below each other, we all have a common interest here, it's just some of us have managed to properly qualify in our chosen profession, others still getting there but we are ALL still learning, there's always something that will trip us up and make us think.

Nice ...

[budm]

Re: How do I find out the rating of an SMD fuse?

"The solution depends to whom this equipment under repair belong to." we are trying to measure low dc current in low voltage circuit from the beginning, so from the start, low price meter will do. if jumping the fuse is safe as you suggested then using cheap meter in low current cannot be any more dangerous than jumping the fuse with piece of wire as you suggested.

"If it belongs to a customer of yours, you are obligated to perform an 100% unquestionably perfect repair." Customer or not, he needs to find out what the current draw is and replace with proper fuse that is why he asked the question about testing the fuse and how to find out the current rating is with 'S' printing on top.

BTW: I still do not put 'PRO' in my sig. since it does not proof anything, my answers and my ability to explain and draw out the SCH without having the unit in front of me proof enough of my knowledge and experience.

https://www.badcaps.net/forum/showth...dge+tom&page=2

"budm when you will update your ID from Knowledge Seeker to a Pro ( in 10 years) ,
then I will take you more seriously, for now you are just a kid playing with it keyboard.
By my opinion you do not own even half than the understanding of Tom regarding electronics.
From the other hand Tom goes by the book due his limited experiences which he will improve in time,
those additional experiences they will help him to improvise too by using the limits of hardware with out causing a disaster.

[Kiriakos GR]

Re: How do I find out the rating of an SMD fuse?

Nice ...

Thanks for advertising my Blog.