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Phil23
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Joined: 27/03/2016
Location: Australia
Posts: 1664

Posted: 12:04pm 23 Jul 2017

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Hi All,

The Tip on my Weller TCP is not much over 12 months old, but it's never been that great in staying tinned properly; almost as if the coating is bad.

Looking on RS, (where it came from), they list 4 different 0.8mm tips, but I can't distinguish the difference.

Can anyone offer advice?

They list:-

[code]
RS Part# Weller Code
661-510 4PT07-1
661-649 4PT08-1
661-526 4PTP7-1
661-655 T0054134899
[/code]

I'd be tempted to just get one of each, but rather not have unsuitable ones as opposed to a few spares.

Thanks

Phil.

Warpspeed
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Joined: 09/08/2007
Location: Australia
Posts: 4406

Posted: 12:21pm 23 Jul 2017

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Radio Parts stock Weller spares too, may be worth a look.

These tips also have a rated temperature, not absolutely certain but a fair guess might be the last figure "7" or "8" might be the temperature. There is often that number stamped on the back of the tip.

http://www.radioparts.com.au/search-products?productsearch=WellerEdited by Warpspeed 2017-07-24

Cheers, �Tony.

Phil23
Guru

Joined: 27/03/2016
Location: Australia
Posts: 1664

Posted: 12:40pm 23 Jul 2017

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Thanks,

Was aware of the temp codes, 7,8 x100�F.

Just not sure about the PT O7 Vs PT P7 variants for example.

The existing bit just has the temp code.

The current one is an 8 which is probably too hot.
Most others I have are 7's (bigger though).

The one in in now is a 661-649 & the packet (still in the drawer!) says lead free...

Wondering if that means it's coating is for lead free solder & that is the reason I've always found it not as good as my older tips (As in 20+ years older).

Phil.

Warpspeed
Guru

Joined: 09/08/2007
Location: Australia
Posts: 4406

Posted: 03:30pm 23 Jul 2017

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There are two different families of Weller tips. One has the conventional magnet and operates a reed relay in the usual fixed temperature self contained irons.

The other type are used in the hugely expensive "soldering stations" that have a variable temperature control and a digital temperature readout.
These are physically quite different.

I have never had to buy tips. I was once very lucky and worked for a company that went broke. I was given a huge handful of brand new assorted Weller tips that I have been using for over thirty years, and still have plenty left. So the mysteries of Weller part numbers are something I know nothing about.

Cheers, �Tony.

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