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Old 18th August 2002, 02:17 PM   #1
tiroth is offline tiroth  United States
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Default Pyropen vs. Jr. vs. Portasol

I've heard good things about the Pyropen Jr. with regard to SMT rework. Anyone know what the real differences are between the three Weller models (Pyropen, Pyropen Jr, Portosol)?

I know the specs are very slightly different (max temp, time), but does anyone have practical feedback on how good they are for SMT soldering and rework?
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Old 18th August 2002, 06:56 PM   #2
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I use my venerable Portasol with a fine tip for SMT. Perhaps a temperature controlled iron is technically better, but I hate having to deal with power cords on soldering irons.

The Pyropen and new Portasol have a classy piezoelectric ignitor instead of a flint sparking wheel like my old Portasol. The Cooper Tools website does a terrible to nonexistant job differentiating the two products. The Portasol appears to have a higher power range.
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Old 18th August 2002, 09:43 PM   #3
tiroth is offline tiroth  United States
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Thanks morsel.

Have you tried using the hot air attachment? (maybe this was what you meant) This was what really drew me to the pyropen/portosol. Getting shrink devices with >5 terminals up without something simulating a hot air pen is rough!

I really like my tempco station but the portability would also be nice when I'm reworking something big like a PSU.
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Old 19th August 2002, 12:57 AM   #4
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Hi Tiroth,
I have used the Pyropen hot air attachment for years for servicing of smd equipment, and they work really well if you use additional liquid flux, and are careful with temperatures.
These chew gas, so running cost can be high, but the hot air attachment is much superior to a standard iron for removal and final resolder on smd boards, especially larger LSI ic's.

Eric.

There was a thread here recently detailing using a fish tank pump to push air through a conventional desolder tip assembly - cheap and effective according to the poster.
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Old 19th August 2002, 03:29 AM   #5
tiroth is offline tiroth  United States
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Eric,

Heh, I actually have one of those fishtank "pens" under my table here. I've used it to solder, but could never manage to get it hot enough to rework despite trying different kinds of fill.

Should I get the small (1.5mm?) hot air attachment in addition to the supplied 4.7mm?

Thanks a lot--your practical experience is exactly what I was hoping to hear.
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Old 19th August 2002, 05:33 AM   #6
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Hi Tiroth,
Yes the 1.5mm hot air tip is the one that I have used, and I have not tried the 4.7 mm hot air tip.
Additional liquid flux is required on the joints that you are desoldering/resoldering.

Eric.
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Old 19th August 2002, 03:02 PM   #7
tiroth is offline tiroth  United States
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Thanks Eric. I always have a container of flux handy.
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Old 19th August 2002, 05:50 PM   #8
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No wurries.

Eric.
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