Fuse/ thermistor/ current control device?

N

N_Cook

Guest
Mustard yellow about 20 x 15mm , looks like a silver mica cap, flat leads
etc.
In line with about 2.5 amp valve heater line. Measures less than 0.1 ohm ,
apparently invariant to nearby soldering iron. .Letters China, 30, UF 600,
GL WE
Presumably 3 amp 600V rated fuse, what would be the generic name for this
sort of fuse ? and how to read the rating. Is current rating proportional to
the area ?


--
Diverse Devices, Southampton, England
electronic hints and repair briefs , schematics/manuals list on
http://home.graffiti.net/diverse:graffiti.net/
 
N_Cook <diverse@tcp.co.uk> wrote in message
news:h4a2ug$ibl$1@news.eternal-september.org...
Mustard yellow about 20 x 15mm , looks like a silver mica cap, flat leads
etc.
In line with about 2.5 amp valve heater line. Measures less than 0.1 ohm ,
apparently invariant to nearby soldering iron. .Letters China, 30, UF 600,
GL WE
Presumably 3 amp 600V rated fuse, what would be the generic name for this
sort of fuse ? and how to read the rating. Is current rating proportional
to
the area ?


--
Diverse Devices, Southampton, England
electronic hints and repair briefs , schematics/manuals list on
http://home.graffiti.net/diverse:graffiti.net/
Click to expand...
picturewise , this one is close
http://www.diytrade.com/china/4/products/5148063/Polyswitch_Fuse_TRF600-150.
html

I think this has more thickness , but the diagonal epoxied lead is the same
, and the colour probably
So resettable "Polyswitch Fuse" ?
From a Yamaha P120 piano with similar but smaller one and rated UF250 for a
2.4amp supply then probably divide figure after UF by 100 for the current
rating in amps and perhaps area is related to standing voltage rating

https://hongkong01.rs-online.com/catimages/R283877-05.jpg
looks closer but I could not find the related product info


--
Diverse Devices, Southampton, England
electronic hints and repair briefs , schematics/manuals list on
http://home.graffiti.net/diverse:graffiti.net/
 
"N_Cook" <diverse@tcp.co.uk> wrote in message
news:h4bpfi$vl2$1@news.eternal-september.org...
N_Cook <diverse@tcp.co.uk> wrote in message
news:h4a2ug$ibl$1@news.eternal-september.org...
Mustard yellow about 20 x 15mm , looks like a silver mica cap, flat leads
etc.
In line with about 2.5 amp valve heater line. Measures less than 0.1 ohm
,
apparently invariant to nearby soldering iron. .Letters China, 30, UF
600,
GL WE
Presumably 3 amp 600V rated fuse, what would be the generic name for
this
sort of fuse ? and how to read the rating. Is current rating proportional
to
the area ?


--
Diverse Devices, Southampton, England
electronic hints and repair briefs , schematics/manuals list on
http://home.graffiti.net/diverse:graffiti.net/



picturewise , this one is close
http://www.diytrade.com/china/4/products/5148063/Polyswitch_Fuse_TRF600-150.
html

I think this has more thickness , but the diagonal epoxied lead is the
same
, and the colour probably
So resettable "Polyswitch Fuse" ?
From a Yamaha P120 piano with similar but smaller one and rated UF250 for
a
2.4amp supply then probably divide figure after UF by 100 for the current
rating in amps and perhaps area is related to standing voltage rating

https://hongkong01.rs-online.com/catimages/R283877-05.jpg
looks closer but I could not find the related product info


--
Diverse Devices, Southampton, England
electronic hints and repair briefs , schematics/manuals list on
http://home.graffiti.net/diverse:graffiti.net/
Click to expand...


The datasheet for your part is here:
http://www.datasheetarchive.com/download/?url=http%3A%2F%2Fwww.datasheetarchive.com%2Fpdf%2FDatasheet-052%2FDSA0059269.pdf

It is, indeed, a polyswitch resettable fuse. The datasheet (catalog) is a
bit hard to understand, but if you open the PDF and search for UF600, you
should be able to go from there. UF600 is just the part marking; the real
part number is in a cross-reference chart in the document.

--
Dave M
masondg44 at comcast dot net

I went to a bookstore and asked the saleswoman, "Where's the
self-help section?" She said if she told me, it would defeat the
purpose.
 
Dave M <masondg4499@comcast.net> wrote in message
news:Eo6dneBz4JuAX_TXnZ2dnUVZ_gGdnZ2d@giganews.com...
"N_Cook" <diverse@tcp.co.uk> wrote in message
news:h4bpfi$vl2$1@news.eternal-september.org...
N_Cook <diverse@tcp.co.uk> wrote in message
news:h4a2ug$ibl$1@news.eternal-september.org...
Mustard yellow about 20 x 15mm , looks like a silver mica cap, flat
leads
etc.
In line with about 2.5 amp valve heater line. Measures less than 0.1
ohm
,
apparently invariant to nearby soldering iron. .Letters China, 30, UF
600,
GL WE
Presumably 3 amp 600V rated fuse, what would be the generic name for
this
sort of fuse ? and how to read the rating. Is current rating
proportional
to
the area ?


--
Diverse Devices, Southampton, England
electronic hints and repair briefs , schematics/manuals list on
http://home.graffiti.net/diverse:graffiti.net/



picturewise , this one is close

http://www.diytrade.com/china/4/products/5148063/Polyswitch_Fuse_TRF600-150.
html

I think this has more thickness , but the diagonal epoxied lead is the
same
, and the colour probably
So resettable "Polyswitch Fuse" ?
From a Yamaha P120 piano with similar but smaller one and rated UF250
for
a
2.4amp supply then probably divide figure after UF by 100 for the
current
rating in amps and perhaps area is related to standing voltage rating

https://hongkong01.rs-online.com/catimages/R283877-05.jpg
looks closer but I could not find the related product info


--
Diverse Devices, Southampton, England
electronic hints and repair briefs , schematics/manuals list on
http://home.graffiti.net/diverse:graffiti.net/



The datasheet for your part is here:

http://www.datasheetarchive.com/download/?url=http%3A%2F%2Fwww.datasheetarch
Click to expand...
ive.com%2Fpdf%2FDatasheet-052%2FDSA0059269.pdf
It is, indeed, a polyswitch resettable fuse. The datasheet (catalog) is a
bit hard to understand, but if you open the PDF and search for UF600, you
should be able to go from there. UF600 is just the part marking; the real
part number is in a cross-reference chart in the document.

--
Dave M
masondg44 at comcast dot net

I went to a bookstore and asked the saleswoman, "Where's the
self-help section?" She said if she told me, it would defeat the
purpose.
Click to expand...
I never thought of searching on UF600 . I could not see what does the
resetting, removing current or dropping temperature or something else ?

previous one I saw was marked UF250 and was about 8 x 8mm so not definite
indicator of rating, presumably that one had a 20V rating , on a 16V supply

30V rating and that Raychem series then package size goes with hold current

UF250 about 11x18mm, hold 2.5amp, long term trip current 4 amp
UF600 about 15x20mm , hold 6 amp, long term trip current 8 amp
UF900 ,the highest in that table 22x28mm , 9 amp hold, long term trip about
12 amp

--
Diverse Devices, Southampton, England
electronic hints and repair briefs , schematics/manuals list on
http://home.graffiti.net/diverse:graffiti.net/
 
"N_Cook" <diverse@tcp.co.uk> wrote in message
news:h4ckdl$a1t$1@news.eternal-september.org...
Dave M <masondg4499@comcast.net> wrote in message
news:Eo6dneBz4JuAX_TXnZ2dnUVZ_gGdnZ2d@giganews.com...
"N_Cook" <diverse@tcp.co.uk> wrote in message
news:h4bpfi$vl2$1@news.eternal-september.org...
N_Cook <diverse@tcp.co.uk> wrote in message
news:h4a2ug$ibl$1@news.eternal-september.org...
Mustard yellow about 20 x 15mm , looks like a silver mica cap, flat
leads
etc.
In line with about 2.5 amp valve heater line. Measures less than 0.1
ohm
,
apparently invariant to nearby soldering iron. .Letters China, 30, UF
600,
GL WE
Presumably 3 amp 600V rated fuse, what would be the generic name for
this
sort of fuse ? and how to read the rating. Is current rating
proportional
to
the area ?


--
Diverse Devices, Southampton, England
electronic hints and repair briefs , schematics/manuals list on
http://home.graffiti.net/diverse:graffiti.net/



picturewise , this one is close

http://www.diytrade.com/china/4/products/5148063/Polyswitch_Fuse_TRF600-150.
html

I think this has more thickness , but the diagonal epoxied lead is the
same
, and the colour probably
So resettable "Polyswitch Fuse" ?
From a Yamaha P120 piano with similar but smaller one and rated UF250
for
a
2.4amp supply then probably divide figure after UF by 100 for the
current
rating in amps and perhaps area is related to standing voltage rating

https://hongkong01.rs-online.com/catimages/R283877-05.jpg
looks closer but I could not find the related product info


--
Diverse Devices, Southampton, England
electronic hints and repair briefs , schematics/manuals list on
http://home.graffiti.net/diverse:graffiti.net/



The datasheet for your part is here:

http://www.datasheetarchive.com/download/?url=http%3A%2F%2Fwww.datasheetarch
ive.com%2Fpdf%2FDatasheet-052%2FDSA0059269.pdf

It is, indeed, a polyswitch resettable fuse. The datasheet (catalog) is
a
bit hard to understand, but if you open the PDF and search for UF600, you
should be able to go from there. UF600 is just the part marking; the
real
part number is in a cross-reference chart in the document.

--
Dave M
masondg44 at comcast dot net

I went to a bookstore and asked the saleswoman, "Where's the
self-help section?" She said if she told me, it would defeat the
purpose.



I never thought of searching on UF600 . I could not see what does the
resetting, removing current or dropping temperature or something else ?

previous one I saw was marked UF250 and was about 8 x 8mm so not definite
indicator of rating, presumably that one had a 20V rating , on a 16V
supply

30V rating and that Raychem series then package size goes with hold
current

UF250 about 11x18mm, hold 2.5amp, long term trip current 4 amp
UF600 about 15x20mm , hold 6 amp, long term trip current 8 amp
UF900 ,the highest in that table 22x28mm , 9 amp hold, long term trip
about
12 amp

--
Diverse Devices, Southampton, England
electronic hints and repair briefs , schematics/manuals list on
http://home.graffiti.net/diverse:graffiti.net/
Click to expand...
Yes, the activation/reset mechanism is the temperature of the disc. Of
course, this is the result of the current passing through the resistance of
the disc, so they are very intertwined. Hope you found what you need
Cheers!

--
Dave M
masondg44 at comcast dot net

I went to a bookstore and asked the saleswoman, "Where's the
self-help section?" She said if she told me, it would defeat the
purpose.
 
Dave M <masondg4499@comcast.net> wrote in message
news:j5SdnVberIq1q_fXnZ2dnUVZ_g2dnZ2d@giganews.com...
"N_Cook" <diverse@tcp.co.uk> wrote in message

Yes, the activation/reset mechanism is the temperature of the disc. Of
course, this is the result of the current passing through the resistance
of
the disc, so they are very intertwined. Hope you found what you need
Cheers!

--
Dave M
masondg44 at comcast dot net

I went to a bookstore and asked the saleswoman, "Where's the
self-help section?" She said if she told me, it would defeat the
purpose.
Click to expand...
yes, another mystery explained.
According to that pdf there is another series that could be used at mains
voltage, anyone come across one in use?


--
Diverse Devices, Southampton, England
electronic hints and repair briefs , schematics/manuals list on
http://home.graffiti.net/diverse:graffiti.net/
 
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