Molex KK 254 connectors currently on sale at Newark

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Chris Tersteeg

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Apr 8, 2022, 11:32:42 PMApr 8
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No, not the discontinued 25 pins ones, but $0.28 for a 5 pin and  $0.53 for a 10 pin, so $2.68 to do up your new H8 card.  Versus $15 for a pair of Samtec BCS-125-L-S-HE from Mouser (only stock I saw currently).


Here's a vote for Norby to please continue putting both footprints on his designs.  

PXL_20220409_021328736.jpg


norberto...@koyado.com

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Apr 9, 2022, 2:13:13 AMApr 9
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Thanks for the complement. In return send me your address to send you a white guide pin to match the color of the connector o your board (white).

 

Norby

 

 

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Glenn Roberts

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Apr 9, 2022, 2:31:36 AMApr 9
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In addition to lower cost, better availability and similarity to to the original Heath design, using multiple Molex connectors is stronger than the original as there are now 6 flanges that reach around and hold the connector flush with the board. The two flanges on the 25-position ones were too easy to break away. Terry S. has also recommended this approach (I think he uses a 10 and a 15 for each position.)

I agree it is best to continue to accommodate either the SamTec or Molex approaches on all our boards… they both have their merits.

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On Apr 9, 2022, at 8:13 AM, norberto...@koyado.com wrote:



norberto...@koyado.com

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Apr 9, 2022, 3:17:35 AMApr 9
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I forgot about the 6 flanges for better grip. I just ordered 20-pcs each.

 

 

On the H89-Serial-USB board, I added same connectors holes, so either connector can be used.

 

Norby

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Terry Smedley

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Apr 9, 2022, 2:20:08 PMApr 9
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My strategy was to use a total pin count of 51 and insert a polarizing plug in the center position.  This eliminated the need for a separate spacer block to guarantee proper alignment.  This photograph shows 3x15 + 1x6.  

Molex KK (0.1") polarizing pins are P/N 15-04-9209.

But Norberto's 3D-printed spacers are mighty pretty, and faithful to the original design.

Terry
Molex_KK_Polarizing.jpg

Glenn Roberts

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Apr 9, 2022, 4:44:04 PMApr 9
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Brilliant!

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On Apr 9, 2022, at 8:20 PM, Terry Smedley <terry....@gmail.com> wrote:

My strategy was to use a total pin count of 51 and insert a polarizing plug in the center position.  This eliminated the need for a separate spacer block to guarantee proper alignment.  This photograph shows 3x15 + 1x6.  
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