Solder massive pins

Other Hardware General Electronics
1

Looking for suggestions on how to solder these 0.08 inch diameter pins (2 mm) to a pcb.

The device datasheet says temperature limit is 360 deg C for 3 to 5 sec.

I have a Sparkfun 937b 60 w soldering station.

Resistor included for size reference.

I was thinking of using the largest tip I have, cranking the temperature up to the max (480 deg C), tinning the tip, and holding the iron against the end of the pin, holding the solder against the side of the pin at pcb interface, and removing the iron as soon as the solder flows.

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2

  • What is the black material ?

  • What are these terminals connected to ?

  • Do you have liquid/gel soldering flux ?

  • Starting hot and finishing quickly is a good idea.

3

Do they just set on the pc board? Or do they fit into holes in the board? Either way, heat and tin the pins with solder. Then heat and tin where you want to put them. Finally hold the pins on the tinned place and heat with your iron until the solder that is there melts and then let the pins cool.

4

You might want to consider a low temp Tin/Bismuth solder.

5

Thank you. The black material is the housing. I suppose they are connected to a pcb within.

Thx for the Flux reminder.

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6

Thanks. They'll fit thru holes in the pcb.

7

Thank you. Never heard of that before.

8
  1. Remove the pins (from the inside, and "tin" them in roach clips with a heavy-duty solder gun.
    or
  2. Spot weld.
9

  • Clean and tin your soldering iron tip.

  • Clean the terminals with IPA using a toothbrush.

  • Use liquid/gel soldering flux.

  • Starting hot and finishing quickly is a good idea.

FYI

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10

One place its used is to solder wires to the automotive rear window heater.

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11

When we encountered something like that in the assembly service, the pins were knurled and pressed into the hole in the printed circuit board. THEN both were soldered.

12

Interesting. Well, I'm stuck with smooth pins. But tinning everything first sounds like a good idea.

13

Unless the pins are already a snug fit in the holes - tinning them will then make them no longer fit.

14

I think the pins are not for soldering, but assumes use of terminals, perhaps with screws

15

That will not tin the tip, it will coat the tip in over cooked solder.
365C should be enough, higher temperature can degrade the solder.

Can you please post some pictures with the PCB mount power supply fitted BUT not soldered into your PCB.
So we can see the area that you are aiming to solder.

Thanks.. Tom.. :grinning: :+1: :coffee: :australia:

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16

There is a different version that has screw terminals - see the LD90-23B12R2 datasheet.
The datasheet gives you the recommended soldering temperature, as DaveEvans mentioned in his original post.

17

Hi,
From the datasheet

image
image990×774 132 KB

FROM THE DATASHEET,
image
image1078×140 12.6 KB

Stop overthinking and do it.

[soapbox] Place the hot tip on the join, count to 3, (3 seconds), then apply the solder, count to 2 (2 Seconds) pull the solder away, pull the iron tip away. Here endeth the lesson.
[/soapbox]
You 60W iron will be sufficient, keep the tip clean.
DONE in 5 Seconds. 5 seconds is a long time.
You will not do any damage if you take 6 or 7 seconds, believe me.
If joint looks bad, let it cool down and try again.

Thanks.. Tom.... :grinning: :+1: :coffee: :australia:

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18

Yep. I regret not getting the screw terminal version.

19

Thx. PCB is not made yet.

20

That is more then enough to solder those pins. I made that with a very old WECP-20 Weller solder station with LR20. An 1/8" tip must be enough.

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