I have been trying to make a footprint for this IC, and trying to figure out the distance between pins, it is a 10 pin ic what do you think the distance will be? What is the normal distance between pins? I don't have the IC right now that's why i cannot measure it so it would be great if someone will help me.


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    \$\begingroup\$ It should have a datasheet. And the datasheet has all of the numbers. \$\endgroup\$ – Eugene Sh. Dec 11 '18 at 17:55
  • \$\begingroup\$ @EugeneSh. It is a very old ic and it's datasheet doesn't have that information I've checked already. \$\endgroup\$ – davidweb Dec 11 '18 at 17:57
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    \$\begingroup\$ Do you have the part? Then take a caliper and measure... \$\endgroup\$ – Eugene Sh. Dec 11 '18 at 17:58
  • \$\begingroup\$ I haven't bought it from china but it is gonna get here next month but i have to design pcb before it arrives here. \$\endgroup\$ – davidweb Dec 11 '18 at 18:00
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    \$\begingroup\$ Are you telling me that you are designing some new circuit and planning to use some old and obsolete part for it? \$\endgroup\$ – Eugene Sh. Dec 11 '18 at 18:01

Found a datasheet for the NTE1337.

It is a replacement for the STK086.

The datasheet for the NTE1337 includes this drawing:

enter image description here

It shows the package size, hole sizes and locations, and the pin spacing (as well as pin dimensions.) The measurements seem to match those that @KingDuken found, but are easier to read.

You will need all that it has to offer since you will have to design your hardware such that you can attach that chip to a (big) heatsink. It is rated for 70W output power - the wasted power will probably be at least that much.

If you can find a copy of the "STK and STR Integrated Circuits" book, you will find the ECG1337 and the NTE1337 listed as replacements for the STK086.

  • \$\begingroup\$ WTG JRE attaboy \$\endgroup\$ – Sunnyskyguy EE75 Dec 12 '18 at 0:19

Next time before you order something, I recommend doing some better research. You specified a part and ordered this without 1) considering your physical spacing and 2) not asking a supplier about the physical dimensions.

I managed to dig up a datasheet (for the STK-080) that had the same form factor. The link you provided demonstrated that the picture will be appropriate for what you're looking for since it provided specifications for the STK-075, 077, 078, 080, 082, and 083. I also saw another datasheet for the STK-084, 085, and 086, and it has the same form factor so I believe the picture below will still be applicable. Try this link out for more details.

enter image description here

I did my best to place a sharpened mask in the picture so that it's easier to read.


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