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Varistor in single quantity

:: EPE Chat Zone ­:: ­Radio Bygones Message Board :: » EPE Forum Archives 2010 - » Archive through 23 March, 2010 » Varistor in single quantity « Previous Next »

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hackinblack
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Username: hackinblack

Post Number: 474
Registered: 09-2006

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Posted on Wednesday, 03 March, 2010 - 02:26 pm:   Edit Post Delete Post Print Post    Move Post (Moderator/Admin Only)

i have been having trouble finding a part for a boiler pcb which blew up (along with my PC)thanks to a transient on the mains during the recent storm; hopefully our own boiler is OK

the part is a 'ZNR 14K471'which after much searching has been identified as a 470V D.C 2500A varistor,
which has obviously had WAAAAAY more than its maximum 80J! (its blown a hole in the PCB)

anyone know where i can get varistors in single quantity,without the dreaded 'minimum order'?

the nearest i found was RS part no 468.229 which has a min order of 5...so other than set myself up as 'Varistor Man' and buzz about fixing old biddies boilers...
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gordon
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Username: gordon

Post Number: 569
Registered: 05-2005

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Posted on Wednesday, 03 March, 2010 - 03:40 pm:   Edit Post Delete Post Print Post    Move Post (Moderator/Admin Only)

ESR sell varistors in single quantities, they may have something suitable. There is also CPC, but their p+p is high for small orders.

http://www.esr.co.uk

(Message edited by gordon on 03 March, 2010)
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phonoplug
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Username: phonoplug

Post Number: 45
Registered: 08-2009

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Posted on Wednesday, 03 March, 2010 - 10:43 pm:   Edit Post Delete Post Print Post    Move Post (Moderator/Admin Only)

Hi,

If you can find a suitable one at Rapid, Farnell, Mouser or Digikey, I don't mind adding one to my next order - they are only a few tens of pence normally.

Rapid has a 14N471 (part number 26-3270), though its out of stock at the moment.
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externet
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Username: externet

Post Number: 146
Registered: 05-2005


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Posted on Thursday, 04 March, 2010 - 05:21 am:   Edit Post Delete Post Print Post    Move Post (Moderator/Admin Only)

Try to find a canibalizable one in a defunct PC power supply.
Abolish the deciBel !
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stylers
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Username: stylers

Post Number: 177
Registered: 04-2005

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Posted on Thursday, 04 March, 2010 - 07:26 pm:   Edit Post Delete Post Print Post    Move Post (Moderator/Admin Only)

if it managed to also blow a hole in the board, then the rest of the components can't be too healthy either.. there is usually an MOQ for components like these when you can get them, they're probably quite cheap even if you have to buy 5..
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ianfield
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Username: ianfield

Post Number: 28
Registered: 08-2007

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Posted on Friday, 05 March, 2010 - 09:24 pm:   Edit Post Delete Post Print Post    Move Post (Moderator/Admin Only)

Running the PCB up temporarily as a test without the ZNR won't do any harm, if the PCB is already "toast" then minimum order quantity for ZNRs is irrelevant anyway - leastaways until the board is repaired.
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hackinblack
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Username: hackinblack

Post Number: 478
Registered: 09-2006

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Posted on Saturday, 06 March, 2010 - 09:11 pm:   Edit Post Delete Post Print Post    Move Post (Moderator/Admin Only)

i am not actually involved in the salvage missioni've decided to take the 'managerial option'
i.e. let some other sap step forward

i just had my brains pickedabout what the smoked component actually was...
i guessed right,cause,symptom,component
and outcome...

'£30'i said

nah only pence,surely?

not by the time you've paid minumum order
plus tax, plus post, ABROAD!

the phone has fallen silent...
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ianfield
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Username: ianfield

Post Number: 30
Registered: 08-2007

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Posted on Saturday, 06 March, 2010 - 10:33 pm:   Edit Post Delete Post Print Post    Move Post (Moderator/Admin Only)

Last time I ordered from Farnell the minimum order was £35 with free delivery, they sell a diverse range of products so there's shurely something you can use that they sell cheaper - I never have any trouble finding things to make the minimum order.

Just buy anything up to £35 and flog it on ebay.

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