Micro fuse?

englishpremier

englishpremier

englishpremier

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My monitor no longer powers on. I've opened it up to find a ceramic 5mm micro fuse has blown.

I've searched high and low and just can't find a replacement.

Does anyone know where i'd find one? Its a 5mm 2.5a ceramic micro fuse.

Thanks
 
A picture would be great :-)

The regular ones your are talking about are actually 25.4 mm in length:

I know you say its 5mm in total length, do you mean width by any chance :), these are 5x20mm:

C388649-01.jpg


http://uk.rs-online.com/web/search/searchBrowseAction.html?method=getProduct&R=5371054

otherwise it could be one of those nasty HRC fuses. there alien to me.

http://www.google.co.uk/search?q=hr...&source=og&sa=N&hl=en&tab=wi&biw=1066&bih=760

if all else fails, you could try something like:

http://uk.farnell.com/jsp/displayProduct.jsp?sku=1162752&CMP=e-2072-00001000

or just get a 2.5amp rated 'wire' (yes its just a naked wire rated to break/melt with surge > 2.5amp) and attach to connectors using solder or if you prefer some tiny crocodile clips
 
That looks exactly like a standard 20mm fuse.

Looking at the IC next to it (PWM Controller) the scale looks pretty much right for a 20mm x 5mm fuse. (The 8-pin DIP package is 9.0mm - 9.5mm across)
 
lol i'm not lying. It looks the same but it's not, it's miniature. Its from a HP W2207

It's seriously nowhere near 2cm (20mm) long.

I've had it in my hand and took it to a well known high-street electronic places that also sells PC components, but even the smallest they do is 10mm.
 
I have checked the catalogues at work and I cannont find anything that has soldered legs that is that small. If you have it out of the board can you put a phot of it against a ruler or something?
 
What Ian_Eb means is that the PWM unit IS about 6mm x 9mm. Unless it's some kind of custom module.

You can get the spec sheet here, dimensions shown at page 8:
www.fairchildsemi.com/ds/FA/FAN7601.pdf

Furthermore, all the other components, wires and holes are also around the same size scale, so either they are also miniaturized versions, or you have the scale wrong. Check with a ruler?

In addition, what is the connector on the left? If the fuse is 5mm, the connector is max 1-1.5 cm. The shape seems like the power connector to me, which should be about 3cm, which is more in line with the 5mm x 20mm fuse for scale...?
 
aatu said:
In addition, what is the connector on the left? If the fuse is 5mm, the connector is max 1-1.5 cm. The shape seems like the power connector to me, which should be about 3cm, which is more in line with the 5mm x 20mm fuse for scale...?
Click to expand...
I looks like an IEC connector to me, so going by that I'm also going to say that the fuse is 20-25mm long.

As the old fuse needs replaceing, you may as well de-solder it. Once it's removed you can hold it up alongside a ruler and prove us all wrong! :p
 
The fuse was soldered to the holder, one end of which fell off when i took the fuse off.

5x20mm is the size of a regular plug fuse. I'll have a look for it when i get back from work and take a pick with some reference.

Yes the connector on the left is a standard 3 pin power adaptor
 
If the fuse is the size you say it is the letters on the board and components would have to be what, 0.2-0.3 mm across? That's pretty small. Plus you've said that connector nearby is a 3 pin kettle plug. They aren't that small! :confused: Also, googling the 't3 15a h 250v' code underneath it appears to be a standard sized fuse, rated for 3.15 amps at 250 volts. No mention anywhere of it being an unusual size, and one forum thread specifically states that it's 20mmx5mm. There's a lot of evidence against what you're saying.
 
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