DIP Socket leakage.

George Herold · 2015-11-30T20:59:28+00:00

This is a follow-up on my leakage question from a week or so ago. I bought every DIP 8 pin socket on digikey and tested them with the Keithley 610B. Here's a pic, A connector string that ends in a Weidmuller terminal block. The terminal block shows leakage at about the 20 T ohm level when I breath on it. (1 T = 10^12) First a few notes: If let the 610 sit it shows a maximum resistance of about 50 T Ohm. (Perhaps things are a bit dirty inside?) Also at this very highest scale the time constant seems to be somewhere close to forever. I also worry a bit about my ability to drive this instrument correctly, changing scales (big knob and multiplier) gives kinda weird results as the resistance is changing. (The time constant seems tied to the multiplier knob and not the main one... I could read the manual I guess.) Finally the tests are a bit subjective, the leakage depends on how much I breath on it, and where I breathe. Anyway here are the results of minimum resistance I found when I breathed on the sockets.. Sockets listed by DK part number. Only one part from each batch was tested, with no attempt at cleaning.... whatever came out of the DK bag is what I used. DK # manufactur CoO Resistance AE1001 Assman China 3 T ohm A400 Aries US 20 G ohm 1175-1467 CNC tech China 10 T ohm ED3013 On Shore tech China 3 T ohm 1212-1071 Preci-dip Swiss 3 G ohm A121607 TE conectiv. Swiss 10 G ohm 952-2209 Harwin UK 100 M ohm The old Mill-Max sockets I had leak at the ~3T ohm level, so any of the Chinese made sockets will work for me. (The new Mill max leak at ~1 G ohm.) George H.

Nov 30, 2015 43 Replies

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Robert Baer 10 years ago

Yes!

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John Devereux 10 years ago

They can just fly the Jumbos by remote control too :)

John Devereux

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Spehro Pefhany 10 years ago

As a passenger, I think I'd like the pilots to have a bit more skin in the game. Maybe if they had an iron-clad guarantee to euthanize the pilot if the plane crashes (and copilot, just to keep the playing field even).

--sp

Best regards, Spehro Pefhany Amazon link for AoE 3rd Edition: http://tinyurl.com/ntrpwu8 Microchip link for 2015 Masters in Phoenix: http://tinyurl.com/l7g2k48

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George Herold 10 years ago

Wow! OK You're going to have to pay a bit more for that. George H.

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