SMD Fuses

[Ahmed Lotfy]

Hello

In some Network gear boards i found this SMD Fuses like in the attached photo

My quisition is

is there is any PM content this SMD fuses ?

 

[Topher_osAUrus]

Hello

In some Network gear boards i found this SMD Fuses like in the attached photo

My quisition is

is there is any PM content this SMD fuses ?

Yes?
No?
Maybe so?

Probably..but very very very little...all you can really do is test and see.

Or, google the datasheet and see what the manufacturer says what they made it with

 

[patnor1011]

Some of them do have gold plating on terminal ends and these are easy to spot.
If contacts are silvery looking then some may be plated with silver, most of them however are just tin plated.
Easy to separate, take paper and try to write a line on it with one of them. If you see gray streak it is tin. No color and there is a chance it may be silver plating - but it is just plating so they are not worth much anyway.

 

[Ahmed Lotfy]

Topher , Patnor

Thank you very much for your information

 

[rucito]

If you see gray streak it is tin. No color and there is a chance it may be silver plating - but it is just plating so they are not worth much anyway.[/quote]
this is wrong

 

[patnor1011]

If you see gray streak it is tin. No color and there is a chance it may be silver plating - but it is just plating so they are not worth much anyway.
this is wrong

Tell me why do you think it is wrong?

 

[rucito]

I tried with pure silver, silverplated and silver coin -all remain gray mark on paper

 

[patnor1011]

Yes but try that again and try that with tin plated item. Use minimum force. Difference will be unmistakable.

 

[Grelko]

Yes but try that again and try that with tin plated item. Use minimum force. Difference will be unmistakable.

Someone uploaded a picture of the different color streaks, that certain metals (Tin, silver etc.) would make on paper, in another thread. If I come across it later, I'll edit this post to add the link for you.

Edit - It's near the bottom of page one.

http://goldrefiningforum.com/phpBB3/viewtopic.php?f=34&t=19999&hilit=silver+tin+nickel+paper