For a school project, we are using LN324-N OP-amps packed in a DIP. Specs can be found here.

We need to solder these to a PCB board. However, section 6.1 of the specsheet says:

Lead Temperature (Soldering, 10 seconds) - min N/A, max 260℃

Soldering Information - Dual-In-Line Package - Soldering(10 seconds) - max 260℃

I take it that we can't solder at >260℃ without an IC socket. However, I noticed that people rarely solder at <300℃(I wasn't able to find out why - the only pages that show up when I google "low temp solder disadvantages" or similar are related to other commercial products).

So the question is:

  1. Am I right about how we can't solder at >260℃? Or am I missing something?
  2. So do we need a socket? Or can we just solder at 250℃ without a socket? Will there be significant consequences of soldering at such a low temperature?
  • 1
    \$\begingroup\$ For good production quality and reliability temperature is important, but generally you can badly roast parts simple parts and they'll be fine. In this case your touching the PCB, not the component with the iron as well, so the part won't see as high of a temp. But on a LM324 and the like you can usually get away with a lot of component abuse. \$\endgroup\$ – Zekhariah May 30 at 3:45
  • \$\begingroup\$ It's listed as 260C for 10 seconds and the solder should melt at 183C (if it's leaded solder at least) and you should need a lot less than 10 seconds of heating to solder it. You might set your iron temperature to be higher than 183C, but that's just for overhead because workpiece sucks heat away from the tip when it is applied to the workpiece and the temperature drops. If you have a bigger tip with more thermal capacity to reduce the drop and/or a powerful TEMPERATURE-CONTROLLED iron that can pump power into the tip to maintain temperature, you can set the temperature closer to 183C. \$\endgroup\$ – DKNguyen May 30 at 4:33
  • \$\begingroup\$ It's like having an air heater that moves a lot of air at 30C versus an air heater that moves a small amount of air at 100C and relies on the cooler air in the room to dilute the hot air to a usable temperature. The second one has a greater chance of burning you or overheating the room if left on for long enough since there will be less and less cool air left to dilute the hot air. But the second heater can't ever heat the room past 30C. The first heater is ideal but often not practical. The first heater is ideal because it can never overheat things but is often not practical. \$\endgroup\$ – DKNguyen May 30 at 4:34

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