3
\$\begingroup\$

Hypothetically, let's say I have a chip in a super small WLCSP or BGA package that I want to have packaged as a plastic or ceramic DIP. No extra components; just the pads brought out to pins.

Are there companies that will do this on a small scale? Like 100 or 200 chips at a time? What might the setup and manufacturing costs be like?

\$\endgroup\$
6
  • 2
    \$\begingroup\$ So you're looking for something more than a Breakout Board? \$\endgroup\$
    – brhans
    Apr 19 at 17:07
  • 2
    \$\begingroup\$ If you're ok with a stack of header pins, FR4 substrate, and copper interconnect, you can have any PCBA supplier fabricate a board breaking out pads to headers with the chip soldered onto the pads. Or do you need it to necessarily be encapsulated in plastic epoxy or a CERDIP? \$\endgroup\$
    – nanofarad
    Apr 19 at 17:09
  • \$\begingroup\$ Could "paint" or dip the PCB in epoxy for "encapsulation" at low volume runs. \$\endgroup\$
    – rdtsc
    Apr 19 at 17:55
  • 1
    \$\begingroup\$ I don't think you'd find joy trying to attach such a package to a chip carrier -- I think your best bet would be a piece of FR4 with legs, and a molded cap that makes it look like a chip. I'd suggest that if you go there, you think twice before neglecting to put power bypass caps on the carrier. You may get away with leaving them off, but if high speeds are involved, you may well have problems without them. \$\endgroup\$
    – TimWescott
    Apr 19 at 18:12
  • 1
    \$\begingroup\$ @DavidBrown Depending on the market, you might be better off reselling a PCB with some kind of enclosure. It works for the $70 Op Amp! \$\endgroup\$
    – Theodore
    Apr 19 at 19:15
6
\$\begingroup\$

Many board fab companies have in-house assembly capabilities. We have done this with the "carrier board" or "breakout board" approach as mentioned above using a board house to do both board fabrication and assembly of the part onto the board. We paid $25.30 for each finished assembly at quantity 200 (the part in question was $8 at this quantity). There was a lot charge of $250 and a non-recurring engineering charge of $775. We employed a high-temperature solder to hold the parts on the board. The NRE is a one-time charge unless the design is changed, but the lot charge is the same every order with a 200-piece minimum. We put the legs on ourselves after getting them from the board house.

\$\endgroup\$
2
  • \$\begingroup\$ I just found a source for DIP lead carrier pins that attach to the side of a PCB, so I think having a PCB printed and assembled by a third-party and then molding the DIP casings myself might be feasible. \$\endgroup\$ Apr 19 at 19:33
  • 1
    \$\begingroup\$ Be sure and watch the solder you use in your assembly or it will reflow when the DIP part is attached. \$\endgroup\$ Apr 19 at 21:38

Your Answer

By clicking “Post Your Answer”, you agree to our terms of service, privacy policy and cookie policy

Not the answer you're looking for? Browse other questions tagged or ask your own question.